1 總    則

　　1 General Provisions

　　1.1  冷再生是一種利于和節(jié)約能源的道路維修方式。為推廣此項(xiàng)技術(shù)，保證冷再生設(shè)計(jì)施工質(zhì)量，特制定本指南。

　　1.1 Cold regeneration is a road maintenance method that is beneficial for environmental protection and energy conservation. To promote this technology and ensure the quality of cold recycling design and construction, this guide is specially formulated.

　　1.2  本指南規(guī)定了水泥穩(wěn)定就地冷再生的設(shè)計(jì)方法、設(shè)計(jì)要點(diǎn)及施工工藝和質(zhì)量控制要求。

　　1.2 This guideline specifies the design methods, key points, construction techniques, and quality control requirements for on-site cold recycling of cement stabilization.

　　1.3  本指南適用于采用水泥穩(wěn)定就地冷再生技術(shù)進(jìn)行大修、改建的各等級(jí)公路的底基層和二級(jí)及二級(jí)以下公路、城市出口路基層的施工。

　　1.3 This guide is applicable to the construction of sub base layers and sub base layers of various grades of highways, as well as urban exit road bases, that undergo major repairs and renovations using cement stabilized in-situ cold recycling technology.

　　1.4  本指南中的規(guī)定、要求與《遼寧省“十一五”公路技術(shù)政策（試行）》中相應(yīng)內(nèi)容不一致時(shí)，以本指南為準(zhǔn)。

　　In case of any inconsistency between the provisions and requirements in this guide and the corresponding content in the "Eleventh Five Year Plan" Highway Technology Policy (Trial) of Liaoning Province, this guide shall prevail.

　　1.5  水泥穩(wěn)定就地冷再生路面設(shè)計(jì)應(yīng)采用設(shè)計(jì)與施工緊密結(jié)合的半剛性基層設(shè)計(jì)理論，設(shè)計(jì)內(nèi)容包括交通量預(yù)測(cè)與分析、舊路混合料分析、混合料配合比設(shè)計(jì)、設(shè)計(jì)參數(shù)確定、路面結(jié)構(gòu)組合設(shè)計(jì)與厚度計(jì)算，在進(jìn)行路面結(jié)構(gòu)技術(shù)經(jīng)濟(jì)綜合評(píng)價(jià)的基礎(chǔ)上提出設(shè)計(jì)方案。

　　The design of 1.5 cement stabilized in-situ cold recycled pavement should adopt a semi-rigid base design theory that closely combines design and construction. The design content includes traffic volume prediction and analysis, analysis of old road mixtures, mix design, determination of design parameters, pavement structure combination design and thickness calculation. Based on the comprehensive evaluation of pavement structure technology and economy, a design scheme should be proposed.

　　1.6  就地冷再生機(jī)的再生深度一般為15cm -30cm。損壞深度大于30cm或需要提高或改善路面使用功能時(shí)，采用水泥穩(wěn)定就地冷再生基層后，應(yīng)加鋪滿足設(shè)計(jì)強(qiáng)度的半剛性上基層，路面結(jié)構(gòu)按《公路瀝青路面設(shè)計(jì)規(guī)范》有關(guān)規(guī)定，通過交通量預(yù)測(cè)計(jì)算設(shè)計(jì)彎沉值后，進(jìn)行路面結(jié)構(gòu)厚度計(jì)算，并進(jìn)行彎拉應(yīng)力驗(yàn)算。

　　The regeneration depth of the on-site cold regeneration machine is generally 15cm -30cm. When the depth of damage is greater than 30cm or when it is necessary to improve or enhance the functionality of the road surface, after using cement stabilized on-site cold recycled base layer, a semi-rigid upper base layer that meets the design strength should be added. The road surface structure should be designed according to the relevant provisions of the "Design Specification for Asphalt Pavement of Highways". After calculating the design deflection value through traffic volume prediction, the thickness of the road surface structure should be calculated, and the bending tensile stress should be verified.

　　1.7  本指南涉及的試驗(yàn)方法應(yīng)符合現(xiàn)行有關(guān)試驗(yàn)規(guī)程的規(guī)定。

　　1.7 The test methods involved in this guideline shall comply with the current relevant test regulations.

　　1.8  再生前必須進(jìn)行路況調(diào)查，確定路面損壞是于路面面層，還是屬于路面結(jié)構(gòu)問題，了解路面結(jié)構(gòu)損壞的范圍和深度。

　　Before regeneration, a road condition survey must be conducted to determine whether the road damage is limited to the surface layer or a structural issue, and to understand the scope and depth of the road structure damage.

　　1.9  再生施工中除進(jìn)行路面混合料級(jí)配檢測(cè)外，應(yīng)避免預(yù)破碎，在必須采用預(yù)破碎的路段，應(yīng)嚴(yán)格控制銑刨深度。

　　In addition to conducting gradation testing on road mixtures during the 1.9 recycling construction, pre crushing should be avoided. In sections where pre crushing is necessary, the milling depth should be strictly controlled.

　　1.10  進(jìn)行室內(nèi)材料配合比設(shè)計(jì)所需混合料原則上應(yīng)用再生機(jī)進(jìn)行現(xiàn)場(chǎng)取料（即舊路混合料）。不同結(jié)構(gòu)路段應(yīng)獨(dú)立進(jìn)行結(jié)構(gòu)組合設(shè)計(jì)和混合料配合比設(shè)計(jì)。

　　The required mixture for indoor material mix design should generally be collected on-site using a recycling machine (i.e. old road mixture). Different structural sections should be independently designed for structural combinations and mix proportions.

　　1.11  就地再生設(shè)備應(yīng)能精確控制再生深度，誤差不宜超過10mm；應(yīng)能根據(jù)要求調(diào)整橫坡，適當(dāng)調(diào)整再生料的級(jí)配；應(yīng)能控制添加料的比例并根據(jù)需要自動(dòng)調(diào)節(jié)。

　　1.11 The on-site regeneration equipment should be able to accurately control the regeneration depth, with an error not exceeding 10mm; it should be able to adjust the cross slope according to requirements and adjust the grading of the regenerated material appropriately; Should be able to control the proportion of additives and automatically adjust as needed.

　　1.12  下列情況原則上不宜采用就地水泥穩(wěn)定就地冷再生技術(shù)：

　　1.12 In principle, on-site cement stabilization and on-site cold recycling technology should not be used in the following situations:

　?。?）在預(yù)估的再生深度范圍內(nèi)，存在過多超粒徑顆粒（粒徑超過10cm的砂礫或鐵渣等），會(huì)對(duì)銑刨轉(zhuǎn)子造成損害的道路；

　　(1) Within the estimated regeneration depth range, there are too many oversized particles (such as gravel or iron slag with a maximum particle size exceeding 10cm) that can cause damage to the milling rotor on the road;

　　（2）病害較多，變形嚴(yán)重，強(qiáng)度不足的道路；

　　(2) Roads with multiple diseases, severe deformation, and insufficient strength;

　?。?）舊路結(jié)構(gòu)層總厚度（面層、基層及墊層之和）小于25cm的道路。

　　(3) Roads with a total thickness of less than 25cm for the structural layer of the old road (the sum of the surface layer, base layer, and cushion layer).

　　1.13  瀝青路面面層厚度不大于7cm可采用水泥穩(wěn)定就地冷再生，面層厚度大于7cm 宜在水泥穩(wěn)定就地冷再生和泡沫瀝青穩(wěn)定就地冷再生兩個(gè)方案之間進(jìn)行技術(shù)經(jīng)濟(jì)比較后確定。

　　1.13 Cement stabilized in-situ cold recycling can be used for asphalt pavement with a thickness of no more than 7cm. For pavement with a thickness of more than 7cm, it should be determined after technical and economic comparison between cement stabilized in-situ cold recycling and foam asphalt stabilized in-situ cold recycling.

　　1.14  施工中應(yīng)認(rèn)真整理相關(guān)資料，不斷總結(jié)施工方法和實(shí)踐經(jīng)驗(yàn)，以提高冷再生施工技術(shù)水平，并為本指南的修訂提供真實(shí)可靠的實(shí)踐依據(jù)。

　　During construction, relevant materials should be carefully organized, and construction methods and practical experience should be continuously summarized to improve the level of cold recycling construction technology and provide real and reliable practical basis for the revision of this guide.

　　2 術(shù)    語

　　2 Terminology

　　2.1  冷再生技術(shù)（Cold recycling）

　　2.1 Cold Recycling Technology

　　將需要改建或大修的舊路面，經(jīng)過翻挖回收、破碎、篩分，并加入適量的穩(wěn)定劑（水泥、乳化瀝青、泡沫瀝青等），在常溫情況下重新拌和，形成具有一定路用性能的再生混合料，用于鋪筑路面基層或底基層的整套工藝技術(shù)。

　　The old pavement to be reconstructed or overhauled shall be excavated, recycled, crushed, screened, and added with a proper amount of stabilizer (cement, emulsified asphalt, foam asphalt, etc.), and remixed at normal temperature to form a recycled mixture with certain road performance, which is used for the whole process technology of paving the pavement base or subbase.

　　2.2  舊混合料（Recycled mixtures）

　　2.2 Recycled mixtures

　　對(duì)需要再生的道路按規(guī)定要求進(jìn)行整形處理，經(jīng)再生機(jī)（或銑刨機(jī)）按規(guī)定的深度、行進(jìn)速度和轉(zhuǎn)子速度進(jìn)行銑刨后得到的具有一定級(jí)配的混合料。

　　The mixture with a certain gradation is obtained by shaping the road that needs to be regenerated according to the prescribed requirements, and milling it with a recycling machine (or milling machine) according to the prescribed depth, travel speed, and rotor speed.

　　2.3  水泥穩(wěn)定就地冷再生（Cold recycling with cement as stabilizing agent）

　　2.3 Cold recycling with cement as stabilizing agent

　　在舊混合料（必要時(shí)加入一定比例的新料）中，加入一定劑量的水泥，在含水量狀態(tài)下拌和形成再生混合料，通過整形、碾壓、養(yǎng)生形成符合設(shè)計(jì)要求的道路基層或底基層。

　　In the old mixture (with a certain proportion of new material added if necessary), a certain amount of cement is added and mixed at the optimal moisture content to form a recycled mixture. Through shaping, rolling, and curing, a road base or subbase that meets the design requirements is formed.

　　2.4  再生深度（Recycling depth）

　　2.4 Recycling depth

　　再生機(jī)設(shè)定的銑刨深度，一般指原道路標(biāo)高與再生層底部標(biāo)高之差。

　　The milling depth set by the regeneration machine generally refers to the difference between the original road elevation and the bottom elevation of the regeneration layer.

　　2.5  再生厚度（Recycling thickness）

　　2.5 Recycling thickness

　　再生層設(shè)計(jì)頂面標(biāo)高與底面標(biāo)高之差，指再生層碾壓成型后的頂面標(biāo)高與底面標(biāo)高之差。

　　The difference between the top and bottom elevations of the recycled layer design refers to the difference between the top and bottom elevations of the recycled layer after rolling and forming.

　　2.6  均勻路段（Homogeneous road section）

　　2.6 Homogeneous Road Section

　　舊路中結(jié)構(gòu)組成及各結(jié)構(gòu)層材料相同或相似并且具有相似結(jié)構(gòu)承載力的路段。

　　The old road section has the same or similar structural composition and materials of each structural layer, and has similar structural bearing capacity.

　　3  一般規(guī)定

　　3 General Provisions

　　3.1  水泥穩(wěn)定就地冷再生混合料用做基層或底基層時(shí)，水泥劑量可采用4%-5%，一般不宜超過5.5%。

　　When using cement stabilized in-situ cold recycled mixture as base or subbase, the cement dosage can be 4% -5%, and generally should not exceed 5.5%.

　　3.2  水泥穩(wěn)定就地冷再生結(jié)構(gòu)層宜在春末和氣溫較高季節(jié)組織施工。施工期的日氣溫應(yīng)在5℃以上，在有冰凍的地區(qū)，并應(yīng)在次重冰凍（-3~-5℃）到來之前半個(gè)月到一個(gè)月完成。

　　3.2 Cement stabilized in-situ cold recycling structural layer should be constructed in late spring and high temperature seasons. The daily minimum temperature during the construction period should be above 5 ℃, in areas with freezing, and should be completed half a month to a month before the first heavy freezing (-3~-5 ℃) arrives.

　　3.3  在雨季施工時(shí)，應(yīng)特別注意氣候變化，勿使水泥和混合料遭雨淋。降雨時(shí)應(yīng)停止施工，已經(jīng)攤鋪的水泥混合料應(yīng)盡快碾壓密實(shí)。

　　3.3 During rainy season construction, special attention should be paid to climate change to prevent cement and mixtures from being exposed to rain. Construction should be stopped during rainfall, and the already spread cement mixture should be compacted as soon as possible.

　　3.4  水泥穩(wěn)定就地冷再生結(jié)構(gòu)層施工時(shí)，應(yīng)遵守下列規(guī)定：

　　When constructing the cement stabilized in-situ cold recycling structural layer, the following regulations should be followed:

　　（1） 添加的碎石等外摻料和水泥應(yīng)撒布均勻。

　　(1) The added crushed stone and other additives, as well as cement, should be evenly spread.

　?。?） 應(yīng)嚴(yán)格控制基層厚度和高程，其路拱橫坡應(yīng)與面層基本一致。

　　(2) The thickness and elevation of the base layer should be strictly controlled, and the cross slope of the road arch should be basically consistent with the surface layer.

　?。?） 應(yīng)在混合料處于或略大于含水量（氣候炎熱干燥時(shí)，基層混合料可大1%~2%）時(shí)進(jìn)行碾壓，壓實(shí)度應(yīng)達(dá)到《公路路面基層施工技術(shù)規(guī)范》（JTJ 034-2000）的有關(guān)要求。當(dāng)使用大噸位壓路機(jī)時(shí)，壓實(shí)度宜提高1%~2%。

　　(3) Rolling should be carried out when the mixture is at or slightly above the optimal moisture content (when the climate is hot and dry, the base layer mixture can be 1% to 2% higher), and the compaction degree should meet the relevant requirements of the "Technical Specification for Construction of Highway Pavement Base Layer" (JTJ 034-2000). When using a large tonnage roller, the compaction degree should be increased by 1% to 2%.

　　（4） 水泥穩(wěn)定就地冷再生結(jié)構(gòu)層宜采用18t以上的振動(dòng)壓路機(jī)碾壓。壓實(shí)厚度15-20cm，采用18~20t振動(dòng)壓路機(jī)碾壓；超過20 cm以上壓實(shí)厚度應(yīng)采用25t以上振動(dòng)壓路機(jī)。冷再生結(jié)構(gòu)層碾壓工序應(yīng)在水泥初凝前完成。

　　(4) The cement stabilized in-situ cold recycling structural layer should be compacted with a vibratory roller weighing at least 18 tons. The compaction thickness is 15-20cm, and a 18-20t vibratory roller is used for rolling; For compaction thickness exceeding 20 cm, a vibratory roller with a capacity of 25 tons or more should be used. The rolling process of the cold recycled structural layer should be completed before the initial setting of the cement.

　　3.5  各級(jí)公路用水泥穩(wěn)定就地冷再生混合料的壓實(shí)度、7d齡期無側(cè)限抗壓強(qiáng)度應(yīng)符合表3.1的規(guī)定。

　　The compaction degree and 7-day unconfined compressive strength of cement stabilized in-situ cold recycled mixtures used for highways at all levels shall comply with the provisions of Table 3.1.

　　3.6  水泥穩(wěn)定就地冷再生混合料的組成設(shè)計(jì)應(yīng)根據(jù)表3.1的強(qiáng)度標(biāo)準(zhǔn)，通過試驗(yàn)確定必需的水泥劑量和混合料的含水量，在需要改善混合料的物理力學(xué)性質(zhì)或級(jí)配時(shí)，還應(yīng)確定摻加新料的規(guī)格和比例。

　　3.6 The composition design of cement stabilized in-situ cold recycled mixture should be based on the strength standards in Table 3.1, and the necessary cement dosage and optimal moisture content of the mixture should be determined through experiments. When it is necessary to improve the physical and mechanical properties or gradation of the mixture, the specifications and proportions of adding new materials should also be determined.

　　3.7  水泥穩(wěn)定就地冷再生的各項(xiàng)試驗(yàn)應(yīng)按《公路工程無機(jī)結(jié)合料穩(wěn)定材料試驗(yàn)規(guī)程》（JTJ057）進(jìn)行。

　　The various tests for on-site cold recycling of cement stabilization should be conducted in accordance with the "Test Code for Inorganic Bonding Materials in Highway Engineering" (JTJ057).

　　表3.1    水泥穩(wěn)定就地冷再生混合料的抗壓強(qiáng)度標(biāo)準(zhǔn)

　　Table 3.1 Compressive Strength Standards for Cement Stabilized In situ Cold Recycled Mixtures

　　4 路況調(diào)查

　　4 Road condition investigation

　　4.1  收集查閱相關(guān)資料

　　4.1 Collect and review relevant materials

　?。?） 原路面設(shè)計(jì)情況以及路面設(shè)計(jì)的任何變化；

　　(1) The original pavement design and any changes in pavement design;

　?。?） 路面各結(jié)構(gòu)層厚度及材料的詳細(xì)情況；

　　(2) Detailed information on the thickness and materials of each structural layer on the road surface;

　?。?） 施工記錄的施工工藝和質(zhì)檢測(cè)試結(jié)果；

　　(3) Construction process and quality inspection test results recorded in the construction records;

　　（4） 路面使用過程中維修養(yǎng)護(hù)的詳細(xì)情況（包括工藝、材料等）；

　　(4) Detailed information on maintenance and upkeep during the use of road surfaces (including processes, materials, etc.);

　?。?） 歷史交通量資料。

　　(5) Historical traffic volume data.

　　4.2  劃分均勻路段

　　4.2 Division of Uniform Road Sections

　　4.2.1  通過獲取的歷史資料初步判定原道路的均勻路段，道路結(jié)構(gòu)組合相差較大或結(jié)構(gòu)層材料相差較大的路段不宜作為一個(gè)均勻路段。

　　4.2.1 Based on the obtained historical data, it is preliminarily determined that the original road section is uniform. Road sections with significant differences in road structure combinations or structural layer materials should not be considered as uniform sections.

　　4.2.2  對(duì)原道路進(jìn)行彎沉測(cè)量，根據(jù)累積總和法初步確定均勻路段。

　　4.2.2 Conduct deflection measurement on the original road and preliminarily determine the uniform road section based on the cumulative sum method.

　　較大彎沉值（即兩輪讀數(shù)中的較大值）的累積總和法采用公式4.1計(jì)算：

　　The cumulative sum method of larger deflection values (i.e. the larger of the two readings) is calculated using formula 4.1:

　　（4.1）

　　（4.1）

　　——i點(diǎn)的累積彎沉總和值

　　——Accumulated total deflection of point i

　　——i點(diǎn)的較大彎沉值

　　——The larger deflection value of point i

　　——整個(gè)路段較大彎沉的平均值

　　——The average value of significant deflection for the entire road section

　　——i點(diǎn)前一點(diǎn)的累積彎沉總和值（i=1時(shí)，其值為0）

　　——The cumulative total deflection of the point before point i (when i=1, its value is 0)

　　將累積總和值繪制在相應(yīng)路段上，相對(duì)恒定的斜坡值表明這些路段具有相似的路面反應(yīng)。示例見圖4.1（圖中彎沉值單位為0.01mm）。

　　Plot the cumulative total value on the corresponding road sections, where relatively constant slope values indicate similar road surface responses. See Figure 4.1 for an example (the deflection value in the figure is in 0.01mm).

　　4.2.3  視覺評(píng)價(jià)

　　4.2.3 Visual evaluation

　　1. 視覺評(píng)價(jià)通常徒步進(jìn)行。對(duì)于較長(zhǎng)的路段，可采用慢速駕車完成評(píng)價(jià)。當(dāng)駕車時(shí)，為了近距離仔細(xì)觀察，需要經(jīng)常停車。

　　Visual evaluation is usually conducted on foot. For longer road sections, slow driving can be used to complete the evaluation. When driving, frequent parking is necessary for close observation.

　　2. 視覺評(píng)價(jià)時(shí)，要記錄整幅路面內(nèi)所有明顯的損壞以及其它觀測(cè)結(jié)果，諸如排水、地質(zhì)變化以及路段幾何特征（比如陡坡、急轉(zhuǎn)彎以及高填方路堤）。

　　When conducting visual evaluation, it is necessary to record all obvious damages and other observation results within the entire road surface, such as drainage, geological changes, and geometric features of the road section (such as steep slopes, sharp turns, and high fill embankments).

　　3. 檢查過程中，損壞模式分為三類，表面損壞、結(jié)構(gòu)損壞、功能損壞，各種損壞模式、損壞類型及具體描述見表4.1。在視覺調(diào)查中，依據(jù)損壞嚴(yán)重程度、頻率和位置，對(duì)道路損壞的不同模式和類型進(jìn)行具體描述。

　　During the inspection process, the damage modes are divided into three categories: surface damage, structural damage, and functional damage. The various damage modes, types, and specific descriptions are shown in Table 4.1. In visual surveys, different patterns and types of road damage are described in detail based on the severity, frequency, and location of the damage.

　　表4.1   損壞模式和類型

　　Table 4.1 Damage Modes and Types

　　4. 對(duì)視覺調(diào)查資料進(jìn)行總結(jié)，明確路面的破壞模式，為道路損壞的原因提供有價(jià)值的線索。

　　4. Summarize the visual survey data, clarify the damage mode of the road surface, and provide valuable clues for the causes of road damage.

　　4.4  均勻路段的再評(píng)估

　　4.4 Re evaluation of Uniform Road Sections

　　結(jié)合視覺調(diào)查中獲取的資料，以及所有其他可能的相關(guān)資料對(duì)由彎沉分析限定的“均勻路段”進(jìn)行再次評(píng)價(jià)，以更加精確地描述各類均勻路段，更精確地對(duì)相似的“相同路段”進(jìn)行識(shí)別和歸類。

　　Based on the data obtained from visual surveys and all other possible relevant information, re evaluate the "uniform road sections" defined by deflection analysis to more accurately describe various types of uniform road sections and more accurately identify and classify similar "same road sections".

　　4.5  詳細(xì)調(diào)查

　　4.5 Detailed Investigation

　　對(duì)每一相似的“均勻路段”，需要進(jìn)行詳細(xì)調(diào)查，以便對(duì)原路面結(jié)構(gòu)進(jìn)行評(píng)價(jià)（組成與損壞模式），確定舊路地基承載力。

　　For each similar 'uniform road section', a detailed investigation is required to evaluate the original pavement structure (composition and damage mode) and determine the bearing capacity of the old road foundation.

　　4.5.1 開挖測(cè)試坑

　　4.5.1 Excavation of Test Pit

　　1. 對(duì)每一均勻路段，測(cè)試坑每每車道應(yīng)不少于一個(gè)。通常在車道外側(cè)輪跡帶開挖，也可在硬路肩（或路緣帶）與行車道的交界線處開挖。

　　For each uniform road section, there should be no less than one test pit per kilometer per lane. Excavation is usually carried out on the outer side of the lane's wheelbase, but can also be done at the boundary between the hard shoulder (or curb) and the lane.

　　2. 測(cè)試坑用于確定舊路各結(jié)構(gòu)層厚度和材料、現(xiàn)場(chǎng)含水量、各結(jié)構(gòu)層的性狀（如開裂程度、水泥穩(wěn)定層的水泥粘結(jié)度或碳酸化程度）等舊路基本信息。

　　2. Test pits are used to determine basic information about the old road, such as the thickness and materials of each structural layer, on-site moisture content, and the characteristics of each structural layer (such as cracking degree, cement bonding degree or carbonation degree of cement stabilized layer).

　　3. 測(cè)試坑通常長(zhǎng)1.2m、寬1m、深0.5-1m，具體尺寸可根據(jù)道路結(jié)構(gòu)進(jìn)行調(diào)整。

　　3. The test pit is usually 1.2m long, 1m wide, and 0.5-1m deep, and the specific size can be adjusted according to the road structure.

　　4. 測(cè)試坑需仔細(xì)開挖，每層材料應(yīng)分開堆放，以便取樣。樣品應(yīng)放置在密封的容器內(nèi)，用于測(cè)定含水量。測(cè)試坑開挖完畢，應(yīng)拍照并詳細(xì)記錄測(cè)試坑的路面輪廓。

　　4. The test pit needs to be carefully excavated, and each layer of material should be stacked separately for sampling. The sample should be placed in a sealed container for measuring moisture content. After the excavation of the test pit is completed, photos should be taken and the road surface contour of the test pit should be recorded in detail.

　　4.5.2  現(xiàn)場(chǎng)承載板試驗(yàn)

　　4.5.2 On site bearing plate test

　　1. 現(xiàn)場(chǎng)承載板試驗(yàn)宜選在一年中的不利季節(jié)進(jìn)行。測(cè)點(diǎn)位置與測(cè)試坑相同，也可在試驗(yàn)的基礎(chǔ)上兩者同步進(jìn)行。

　　1. The on-site bearing plate test should be conducted during the most unfavorable season of the year. The location of the measuring point is the same as that of the testing pit, and the two can also be synchronized based on the experiment.

　　2. 對(duì)每一均勻路段，每車道應(yīng)不少于兩個(gè)測(cè)點(diǎn)，同一均勻路段中若某一測(cè)點(diǎn)的數(shù)值高于（或低于）平均值的30%，應(yīng)增加測(cè)點(diǎn)數(shù)量，同時(shí)對(duì)數(shù)值過低點(diǎn)附近的路段應(yīng)仔細(xì)調(diào)查，看是否存在路基沉陷等下部結(jié)構(gòu)層損壞問題。

　　2. For each uniform road section, each lane should have no less than two measuring points. If the value of a measuring point in the same uniform road section is higher (or lower) than 30% of the average value, the number of measuring points should be increased. At the same time, the road section near the low point of the value should be carefully investigated to see if there are any problems such as roadbed subsidence or damage to the lower structural layer.

　　3. 將道路面層認(rèn)真去除，測(cè)定其下部結(jié)構(gòu)層復(fù)合回彈模量。同理將道路基層、墊層完全去除，測(cè)定其下部結(jié)構(gòu)層復(fù)合回彈模量，直模量測(cè)定點(diǎn)處的結(jié)構(gòu)層深度大于預(yù)估的可能銑刨深度。

　　3. Carefully remove the road surface layer and measure the composite rebound modulus of its lower structural layer. Similarly, completely remove the road base and cushion layer, and measure the composite rebound modulus of the lower structural layer until the depth of the structural layer at the modulus measurement point is greater than the estimated maximum possible milling depth.

　　4.6  綜合資料，初步確定再生厚度

　　4.6 Comprehensive data, preliminary determination of regeneration thickness

　　綜合分析以上獲得的信息，推測(cè)該路面的剩余使用壽命，并識(shí)別出承載力的關(guān)鍵層，在明確已經(jīng)損壞結(jié)構(gòu)層的基礎(chǔ)上初步確定再生層的厚度。

　　Based on the comprehensive analysis of the information obtained above, the remaining service life of the road surface is speculated, and the key layer with the lowest bearing capacity is identified. On the basis of clarifying the damaged structural layer, the thickness of the regeneration layer is preliminarily determined.

　　5 結(jié)構(gòu)組合設(shè)計(jì)

　　5. Structural combination design

　　5.1  舊路大修、改建時(shí)，應(yīng)根據(jù)收集調(diào)查的交通量數(shù)據(jù)，確定交通量增長(zhǎng)率，計(jì)算設(shè)計(jì)年限內(nèi)一個(gè)車道的累計(jì)當(dāng)量軸次，結(jié)合路面等級(jí)及路面類型，采用瀝青路面半剛性設(shè)計(jì)理論，計(jì)算設(shè)計(jì)彎沉值。

　　During the major repair and reconstruction of old roads, the traffic growth rate should be determined based on the collected and surveyed traffic volume data, and the cumulative equivalent number of axles for one lane within the design period should be calculated. Combined with the pavement grade and type, the semi-rigid design theory of asphalt pavement should be adopted to calculate the design deflection value.

　　5.2   初步確定的道路結(jié)構(gòu)組合方案。根據(jù)原路面設(shè)計(jì)強(qiáng)度和路況調(diào)查中得到的路面損壞情況，預(yù)估冷再生結(jié)構(gòu)層厚度，并挖驗(yàn)檢測(cè)冷再生結(jié)構(gòu)層下承層的當(dāng)量回彈模量，試算后確定再生層的厚度，一般厚度不宜小于18cm。

　　5.2 Preliminary determined road structure combination plan. Based on the original pavement design strength and road condition investigation, the thickness of the cold recycled structural layer is estimated, and the equivalent rebound modulus of the underlying layer of the cold recycled structural layer is excavated and tested. After trial calculation, the thickness of the recycled layer is determined, and generally the thickness should not be less than 18cm.

　　5.3  由路況調(diào)查中現(xiàn)場(chǎng)承載板試驗(yàn)獲得的原路各層下部復(fù)合模量，采用內(nèi)插法確定預(yù)估的道路銑刨深度處下層復(fù)合模量，以此模量作為再生層底部模量。見圖5.1。

　　5.3 The composite modulus of the lower layer of the original road obtained from the on-site bearing plate test in the road condition survey is used to determine the estimated composite modulus of the lower layer at the milling depth of the road using interpolation method, and this modulus is used as the modulus of the bottom of the regeneration layer. Refer to Figure 5.1.

　　5.4  水泥穩(wěn)定就地冷再生層設(shè)計(jì)參數(shù)應(yīng)以實(shí)測(cè)值為準(zhǔn)，當(dāng)缺乏條件無法取得實(shí)測(cè)值時(shí)，可參照下述值進(jìn)行取值。水泥劑量為4%~5.5%時(shí),抗壓模量E值為1000~1500MPa,劈裂強(qiáng)度為0.4~0.6MPa。

　　5.4 The design parameters of the cement stabilized in-situ cold regeneration layer should be based on the measured values. When there is a lack of conditions to obtain the measured values, the following values can be used for reference. When the cement dosage is 4%~5.5%, the compressive modulus E value is 1000~1500MPa, and the splitting strength is 0.4~0.6MPa.

　　5.5  按設(shè)計(jì)彎沉值驗(yàn)算結(jié)構(gòu)層厚度。見示意圖5.1。

　　5.5 Verify the thickness of the structural layer according to the design deflection value. Refer to schematic diagram 5.1.

　　5.6  驗(yàn)算結(jié)果符合要求則進(jìn)行下述步驟，如驗(yàn)算結(jié)果不符合要求，則重新擬定結(jié)構(gòu)層組成進(jìn)行計(jì)算，直驗(yàn)算結(jié)果滿足要求為止。

　　If the verification result meets the requirements, the following steps shall be taken. If the verification result does not meet the requirements, the structural layer composition shall be re formulated for calculation until the verification result meets the requirements.

　　5.7  進(jìn)行技術(shù)經(jīng)濟(jì)比較，終確定采用的路面結(jié)構(gòu)方案。

　　5.7 Conduct technical and economic comparisons to ultimately determine the pavement structure scheme to be adopted.

　　5.1 內(nèi)插法確定再生層底部模量

　　5.1 Interpolation method to determine the modulus of the bottom of the regeneration layer

　　6  混合料組成設(shè)計(jì)

　　6. Composition design of mixed materials

　　6.1  材  料

　　6.1 Materials

　　6.1.1  水泥穩(wěn)定就地冷再生層用做底基層時(shí)，銑刨料單個(gè)顆粒的粒徑不應(yīng)超過53mm，其顆粒組成應(yīng)在表6.1所列范圍內(nèi)。銑刨料的塑性指數(shù)不應(yīng)超過10。塑性指數(shù)大于10的銑刨舊料，宜采用水泥和石灰綜合穩(wěn)定。

　　When the cement stabilized in-situ cold recycled layer is used as the base layer, the maximum particle size of a single milling material particle should not exceed 53mm, and its particle composition should be within the range listed in Table 6.1. The plasticity index of milling material should not exceed 10. Milling old materials with a plasticity index greater than 10 should be stabilized with a combination of cement and lime.

　　表6.1公路水泥穩(wěn)定再生底基層混合料的顆粒組成范圍

　　Table 6.1 Particle Composition Range of Cement Stabilized Recycled Subbase Mixture for Highways

　　6.1.2  水泥穩(wěn)定就地冷再生層用做基層時(shí)，單個(gè)顆粒的粒徑不應(yīng)超過37.5mm，其顆粒組成應(yīng)在表6.2范圍內(nèi)。對(duì)于二級(jí)公路宜按接近級(jí)配范圍的下限組配混合料。

　　When the cement stabilized in-situ cold recycled layer is used as the base layer, the maximum particle size of a single particle should not exceed 37.5mm, and its particle composition should be within the range of Table 6.2. For second-class highway, it is better to mix the mixture according to the lower limit close to the grading range.

　　6.1.3  原道路為瀝青混合料、級(jí)配碎石、未篩分碎石、砂礫、碎石土、砂礫土、煤矸石和各種粒狀礦渣均適宜用水泥穩(wěn)定就地冷再生。

　　6.1.3 The original road is made of asphalt mixture, graded crushed stone, unscreened crushed stone, gravel, crushed stone soil, gravel soil, coal gangue, and various granular slag, all of which are suitable for on-site cold recycling stabilized with cement.

　　6.1.4  在水泥穩(wěn)定就地冷再生層施工前，在原道路上取有代表性的銑刨料樣品嚴(yán)格按照相關(guān)規(guī)范和規(guī)程進(jìn)行下列試驗(yàn)：

　　6.1.4 Before the construction of the cement stabilized in-situ cold recycling layer, representative milling material samples shall be taken from the original road and subjected to the following tests in strict accordance with relevant specifications and regulations:

　?。?）顆粒分析；

　　(1) Particle analysis;

　?。?）液限和塑性指數(shù)；

　　(2) Liquid limit and plasticity index;

　　（3）擊實(shí)試驗(yàn)；

　　(3) Compaction test;

　?。?）有機(jī)質(zhì)含量（必要時(shí)做）；

　　(4) Organic matter content (if necessary);

　?。?）硫酸鹽含量（必要時(shí)做）。

　　(5) Sulfate content (if necessary).

　　6.1.5  對(duì)級(jí)配不良的銑刨舊料，應(yīng)通過摻加部分新料以改善其級(jí)配，對(duì)新加料應(yīng)取所定料場(chǎng)中有代表性的樣品嚴(yán)格按照相關(guān)規(guī)范和規(guī)程進(jìn)行下列試驗(yàn)：

　　6.1.5 For milling old materials with poor grading, the grading should be improved by adding some new materials. Representative samples from the designated material yard should be taken for the new materials, and the following tests should be strictly conducted in accordance with relevant specifications and regulations:

　?。?）顆粒分析；

　　(1) Particle analysis;

　?。?）細(xì)集料液限和塑性指數(shù)；

　　(2) Liquid limit and plasticity index of fine aggregate;

　?。?）相對(duì)密度；

　　(3) Relative density;

　?。?）碎石或礫石的壓碎值；

　　(4) Crushing value of crushed stone or gravel;

　　（5）有機(jī)質(zhì)含量（必要時(shí)做）；

　　(5) Organic matter content (if necessary);

　?。?）硫酸鹽含量（必要時(shí)做）。

　　(6) Sulfate content (if necessary).

　　6.1.6  有機(jī)質(zhì)含量超過2%或硫酸鹽含量超過0.25%的舊路混合料，不得用水泥穩(wěn)定就地冷再生。

　　Old road mixtures with organic matter content exceeding 2% or sulfate content exceeding 0.25% shall not be stabilized with cement for on-site cold recycling.

　　6.1.7  選用初凝時(shí)間3h以上和終凝時(shí)間較長(zhǎng)（宜在6h以上）的普通硅酸鹽水泥，不應(yīng)使用快硬水泥、早強(qiáng)水泥以及已受潮變質(zhì)的水泥。宜采用 32.5級(jí)或42.5級(jí)的水泥。

　　6.1.7 Ordinary Portland cement with an initial setting time of more than 3 hours and a final setting time of more than 6 hours should be selected. Fast hardening cement, early strength cement, and cement that has been affected by moisture and deterioration should not be used. Cement of grade 32.5 or 42.5 should be used.

　　6.1.8  凡是飲用水（含牲畜飲用水）均可用于水泥穩(wěn)定就地冷再生施工。水質(zhì)有疑問時(shí)應(yīng)進(jìn)行檢驗(yàn)。

　　6.1.8 All drinking water (including livestock drinking water) can be used for on-site cold recycling construction of cement stabilization. When there are doubts about water quality, testing should be conducted.

　　6.1.9  石灰應(yīng)為生石灰粉或消石灰，各項(xiàng)技術(shù)指標(biāo)應(yīng)符合《公路路面基層施工技術(shù)規(guī)范》（JTJ 034-2000）的有關(guān)要求。

　　6.1.9 Lime should be quicklime powder or hydrated lime, and all technical indicators should comply with the relevant requirements of the "Technical Specification for Construction of Highway Pavement Base" (JTJ 034-2000).

　　6.2   混合料設(shè)計(jì)方法

　　6.2 Mix design method

　　6.2.1  準(zhǔn)備試樣并進(jìn)行配合比設(shè)計(jì)

　　6.2.1 Prepare the sample and conduct mix design

　　1. 將代表試樣（舊混合料）完全風(fēng)干，測(cè)定舊混合料完全風(fēng)干后的含水量。

　　1. Fully air dry the representative sample (old mixture) and measure the moisture content of the old mixture after complete air drying.

　　2. 根據(jù)舊混合料和新加料的級(jí)配確定合成級(jí)配，繪制級(jí)配曲線，使設(shè)計(jì)合成級(jí)配在相應(yīng)的級(jí)配范圍內(nèi)。設(shè)計(jì)的合成級(jí)配宜接近表中級(jí)配范圍的中值。當(dāng)反復(fù)調(diào)整不能滿意時(shí)，應(yīng)更換新加料設(shè)計(jì)。更換新加料后其合成級(jí)配仍不能完全在相應(yīng)的級(jí)配范圍內(nèi)時(shí)，如僅為個(gè)別篩孔超出，可由終強(qiáng)度的無側(cè)限抗壓強(qiáng)度決定此道路是否適合再生，如大部分篩孔超出范圍，則此道路不適宜進(jìn)行再生。

　　2. Determine the composite gradation based on the gradation of the old mixture and new additives, draw the gradation curve, and ensure that the designed composite gradation is within the corresponding gradation range. The designed composite gradation should be close to the median of the gradation range in the table. When repeated adjustments are unsatisfactory, a new feeding design should be replaced. When the composite gradation cannot be completely within the corresponding gradation range after replacing the new material, if only a few sieve holes exceed it, the unconfined compressive strength of the final strength can determine whether the road is suitable for regeneration. If most sieve holes exceed the range, the road is not suitable for regeneration.

　　3.將風(fēng)干后的舊混合料分成以下五個(gè)部分：

　　3. Divide the air dried old mixture into the following five parts:

　?。?）粒徑大于37.5mm的材料；

　　(1) Materials with a particle size greater than 37.5mm;

　?。?）粒徑在19~37.5mm之間的材料；

　　(2) Materials with particle sizes between 19 and 37.5mm;

　?。?）粒徑在13.2~19mm之間的材料；

　　(3) Materials with particle sizes between 13.2-19mm;

　?。?）粒徑在4.75~13.2mm之間的材料；

　　(4) Materials with particle sizes ranging from 4.75mm to 13.2mm;

　?。?）小于4.75mm的材料。

　　(5) Materials smaller than 4.75mm.

　　4.將全部通過37.5mm的材料，再按照篩分結(jié)果重新組合成代表性試樣，并用19~37.5mm之間的材料替代37.5mm以上的材料。配10kg舊混合料計(jì)算過程見表6.3。

　　4. Combine all materials passing through 37.5mm according to the screening results to form a representative sample, and replace materials above 37.5mm with materials between 19-37.5mm. The calculation process for preparing 10kg old mixture is shown in Table 6.3.

　　表 6.3    代表試樣重新組合

　　Table 6.3 represents the recombination of samples

　　6.2.2  干密度和含水量的確定

　　6.2.2 Determination of maximum dry density and optimal moisture content

　　6.2.2.1  分別按下列五種水泥劑量配制同一種土樣、不同水泥劑量的混合料；

　　6.2.2.1 Prepare a mixture of the same soil sample and different cement dosages according to the following five cement dosages:;

　　(1)做基層用：4%、4.5%、5%、5.5%，6%，

　　(1) For grassroots use: 4%, 4.5%, 5%, 5.5%, 6%,

　　(2)做底基層用：4%、4.5%、5%、5.5%、6%

　　(2) For use as a base layer: 4%, 4.5%, 5%, 5.5%, 6%

　　注：在能估計(jì)合適劑量的情況下，可以將五個(gè)不同劑量縮減到三或四個(gè)，如果待穩(wěn)定材料塑性指數(shù)大于12或（和）顆粒較細(xì)應(yīng)適當(dāng)提高水泥劑量（提高1%~2%）。

　　Note: If the appropriate dosage can be estimated, five different dosages can be reduced to three or four. If the plasticity index of the material to be stabilized is greater than 12 or (and) the particles are finer, the cement dosage should be appropriately increased (by 1% to 2%).

　　6.2.2.2  根據(jù)設(shè)計(jì)配合比確定的新舊料比例進(jìn)行配料，配料時(shí)大于37.5mm的材料用19~37.5mm進(jìn)行替代。

　　6.2.2.2 According to the design mix proportion, determine the ratio of new and old materials for batching. When batching, materials larger than 37.5mm should be replaced with 19-37.5mm.

　　6.2.2.3  按公式6.1確定試樣的干質(zhì)量。

　　6.2.2.3 Determine the dry mass of the sample according to formula 6.1.

　　（6.1）

　?。?.1）

　　式中：

　　Where:

　　――試樣的干質(zhì)量，g；

　　The dry mass of the sample, g；

　　――試樣的風(fēng)干質(zhì)量，g；

　　The air dried quality of the sample, g；

　　――風(fēng)干試樣的含水量，％。

　　Moisture content of air dried samples,%.

　　6.2.2.4  按公式6.2確定穩(wěn)定劑的用量。

　　6.2.2.4 Determine the dosage of stabilizer according to formula 6.2.

　?。?.2）

　　（6.2）

　　式中：

　　Where:

　　――水泥或石灰用量，g；

　　The amount of cement or lime used, g；

　　――水泥或石灰的百分比，％；

　　- Percentage of cement or lime,%;

　　――試樣的干質(zhì)量，g。

　　The dry mass of the sample, g。

　　6.2.2.5  按照《公路工程無機(jī)結(jié)合料穩(wěn)定材料試驗(yàn)規(guī)程》（JTJ 057－94）T0804－94方法確定混合料的干密度和含水量。確定各種混合料的含水量和干（壓實(shí)）密度，少應(yīng)做三個(gè)不同水泥劑量混合料的擊實(shí)試驗(yàn)，即小劑量、中間劑量和劑量。其他兩個(gè)劑量混合料的含水量和干密度用內(nèi)插法確定。

　　6.2.2.5 Determine the maximum dry density and optimal moisture content of the mixture according to the T0804-94 method in the "Test Code for Inorganic Bonding Materials in Highway Engineering" (JTJ 057-94). To determine the optimal moisture content and maximum dry (compacted) density of various mixtures, at least three compaction tests should be conducted for mixtures with different cement dosages, namely minimum dosage, intermediate dosage, and maximum dosage. The optimal moisture content and maximum dry density of the other two dosage mixtures were determined using interpolation.

　　6.2.3  穩(wěn)定材料的準(zhǔn)備

　　6.2.3 Preparation of Stable Materials

　　6.2.3.1  根據(jù)公式6.1計(jì)算試樣干質(zhì)量。

　　6.2.3.1 Calculate the dry mass of the sample according to formula 6.1.

　　6.2.3.2根據(jù)公式6.2計(jì)算穩(wěn)定劑用量。

　　6.2.3.2 Calculate the stabilizer dosage according to formula 6.2.

　　6.2.3.3按公式6.3確定加水百分比，并按式6.4確定需要加水的質(zhì)量。

　　6.2.3.3 Determine the percentage of water added according to formula 6.3, and determine the required amount of water to be added according to formula 6.4.

　?。?.3）

　?。?.3）

　　（6.4）

　　（6.4）

　　式中：

　　Where:

　　――試樣的加水百分比，％；

　　-- Percentage of water added to the sample,%;

　　――試樣的含水量，％；

　　The optimal moisture content of the sample,%;

　　――風(fēng)干試驗(yàn)的含水量，％；

　　Moisture content of air drying test,%;

　　――加水質(zhì)量，g；

　　-- Quality of water added, g；

　　――試樣干重，g；

　　-- Dry weight of the sample, g；

　　――穩(wěn)定劑添加量，g。

　　-- stabilizer addition amount, g。

　　6.2.4  成型試件（靜壓成型）

　　6.2.4 Forming test piece (static pressure forming)

　　6.2.4.1  按規(guī)定壓實(shí)度分別計(jì)算不同水泥劑量的試件應(yīng)有的干密度。

　　6.2.4.1 Calculate the dry density of specimens with different cement dosages according to the prescribed compaction degree.

　　6.2.4.2  根據(jù)含水量和計(jì)算的干密度制備試件。進(jìn)行強(qiáng)度試驗(yàn)時(shí)，作為平行試驗(yàn)的少試件數(shù)量應(yīng)不小于表6.4的規(guī)定。如試驗(yàn)結(jié)果的偏差系數(shù)大于表中規(guī)定的值，則應(yīng)重做試驗(yàn)，并找出原因，加以解決。如不能降低偏差系數(shù)，則應(yīng)增加試件數(shù)量。

　　6.2.4.2 Prepare specimens based on the optimal moisture content and calculated dry density. When conducting strength tests, the minimum number of specimens used as parallel tests should not be less than the provisions in Table 6.4. If the deviation coefficient of the test results is greater than the value specified in the table, the test should be redone, and the cause should be identified and resolved. If the deviation coefficient cannot be reduced, the number of specimens should be increased.

　　6.2.4.3  試件在溫度20±2℃、濕度大于95％的養(yǎng)護(hù)室內(nèi)養(yǎng)生6d，浸水24h后，按《公路工程無機(jī)結(jié)合料穩(wěn)定材料試驗(yàn)規(guī)程》（JTJ057）進(jìn)行無側(cè)限抗壓強(qiáng)度試驗(yàn)。

　　6.2.4.3 The specimen shall be cured in a curing room with a temperature of 20 ± 2 ℃ and humidity greater than 95% for 6 days. After being immersed in water for 24 hours, an unconfined compressive strength test shall be conducted in accordance with the "Test Specification for Inorganic Bonding Materials in Highway Engineering" (JTJ057).

　　6.2.5  確定穩(wěn)定劑的用量

　　6.2.5 Determine the optimal dosage of stabilizer

　　6.2.5.1  計(jì)算無側(cè)限抗壓強(qiáng)度試驗(yàn)結(jié)果的平均值和偏差系數(shù)。

　　6.2.5.1 Calculate the average value and deviation coefficient of the unconfined compressive strength test results.

　　6.2.5.2  根據(jù)要求的強(qiáng)度標(biāo)準(zhǔn)，選定合適的水泥劑量，此劑量試件室內(nèi)試驗(yàn)結(jié)果的平均抗壓強(qiáng)度應(yīng)符合公式6.5的要求：

　　6.2.5.2 According to the required strength standards, select the appropriate cement dosage, and the average compressive strength of the indoor test results of this dosage specimen should meet the requirements of formula 6.5:

　　≥Rd/（1－ZaCv）           （6.5）

　　≥Rd/（1－ZaCv）           （6.5）

　　式中：

　　Where:

　　Rd——設(shè)計(jì)抗壓強(qiáng)度；

　　Rd - Design compressive strength;

　　Cv——試驗(yàn)結(jié)果的偏差系數(shù)（以小數(shù)計(jì)）；

　　Cv - Deviation coefficient of test results (in decimal units);

　　Za——標(biāo)準(zhǔn)正態(tài)分布表中隨保證率（或置信度a）而變的系數(shù)，取保證為率90％，即Za=1.282。

　　Za - the coefficient in the standard normal distribution table that varies with the guarantee rate (or confidence level a), with a guarantee rate of 90%, i.e. Za=1.282.

　　6.2.5.3  工地人工撒布水泥，實(shí)際采用的水泥劑量應(yīng)比室內(nèi)試驗(yàn)確定的劑量多0.5~1.0%；采用水泥稀漿車，實(shí)際采用的水泥劑量應(yīng)比室內(nèi)試驗(yàn)確定的劑量多0~0.5%。

　　6.2.5.3 When manually spreading cement on construction sites, the actual cement dosage used should be 0.5-1.0% higher than the dosage determined by indoor tests; When using a cement slurry truck, the actual cement dosage used should be 0-0.5% higher than the dosage determined by indoor tests.

　　6.2.5.4  水泥的小劑量應(yīng)不低于4%。

　　6.2.5.4 The minimum dosage of cement should not be less than 4%.

　　7 鋪筑試驗(yàn)段

　　7 Paving test section

　　7.1  一般規(guī)定

　　7.1 General Provisions

　　7.1.1  每一工程開工前應(yīng)鋪筑試驗(yàn)段。

　　7.1.1 Before the commencement of each project, a test section should be laid.

　　7.1.2  根據(jù)道路結(jié)構(gòu)形式和損壞狀況選取試驗(yàn)段，使試驗(yàn)段具有代表性。

　　7.1.2 Select the test section based on the road structure and damage condition to make it representative.

　　7.1.3  試驗(yàn)段的長(zhǎng)度不應(yīng)短于200m。

　　The length of the test section should not be less than 200m.

　　7.1.4  再生時(shí)應(yīng)嚴(yán)格控制再生深度，如遇問題應(yīng)及時(shí)解決。

　　7.1.4 During regeneration, the regeneration depth should be strictly controlled, and any problems should be promptly resolved.

　　7.1.5  通過試驗(yàn)段的鋪筑應(yīng)獲得以下資料：

　　7.1.5 The following information should be obtained through the paving of the test section:

　?。?）再生材料的級(jí)配。檢驗(yàn)再生后的材料，與試驗(yàn)室進(jìn)行配合比設(shè)計(jì)時(shí)的級(jí)配進(jìn)行對(duì)比，看其是否在允許的波動(dòng)范圍內(nèi)。

　　(1) Grading of recycled materials. Inspect the regenerated material and compare it with the gradation during the mix design in the laboratory to see if it is within the allowable fluctuation range.

　?。?）確定再生機(jī)的行進(jìn)速度和轉(zhuǎn)子速度。

　　(2) Determine the travel speed and rotor speed of the regeneration machine.

　?。?）確定壓實(shí)工藝。

　　(3) Determine the compaction process.

　　（4）了解舊路的膨脹性。

　　(4) Understand the expansibility of old roads.

　　7.1.6  通過鋪筑試驗(yàn)段，操作人員、監(jiān)理人員以及管理人員應(yīng)了解再生材料的有關(guān)特性。

　　7.1.6 Through the paving test section, operators, supervisors, and managers should have a comprehensive understanding of the relevant characteristics of recycled materials.

　　7.2  試驗(yàn)段施工

　　7.2 Experimental section construction

　　7.2.1  按要求選定試驗(yàn)段。

　　7.2.1 Select the test section as required.

　　7.2.2  根據(jù)經(jīng)驗(yàn)和所用再生機(jī)械的特點(diǎn)，制定3~5種不同的再生機(jī)行進(jìn)速度和轉(zhuǎn)子速度的組合方案，按再生深度對(duì)舊路進(jìn)行銑刨，取銑刨后具有代表性的材料送往試驗(yàn)室進(jìn)行篩分，選擇級(jí)配接近理想級(jí)配的方案作為施工時(shí)再生機(jī)行進(jìn)速度和轉(zhuǎn)子速度的方案。

　　7.2.2 Based on experience and the characteristics of the recycling machinery used, develop 3-5 different combinations of recycling machine travel speed and rotor speed, mill the old road according to the recycling depth, take representative materials after milling and send them to the laboratory for screening, and select the scheme with the closest gradation to the ideal gradation as the scheme for recycling machine travel speed and rotor speed during construction.

　　7.2.3  按照7.2.2確定的再生機(jī)行進(jìn)速度和轉(zhuǎn)子速度，根據(jù)再生深度對(duì)舊路銑刨，取銑刨后具有代表性的材料樣品送往試驗(yàn)室進(jìn)行室內(nèi)配合比設(shè)計(jì)。

　　7.2.3 According to the determined speed of the regeneration machine and rotor speed in 7.2.2, the old road is milled according to the regeneration depth. Representative material samples after milling are taken and sent to the laboratory for indoor mix design.

　　7.2.4  按照室內(nèi)試驗(yàn)結(jié)果，在舊路上攤鋪新加料，但不添加穩(wěn)定劑，按7.2.2確定的方案進(jìn)行銑刨，取銑刨后具有代表性的材料樣品送往試驗(yàn)室進(jìn)行篩分，如果篩分后的級(jí)配與室內(nèi)設(shè)計(jì)級(jí)配超過工地允許波動(dòng)范圍，應(yīng)調(diào)整再生機(jī)速度和轉(zhuǎn)子速度，使銑刨后的級(jí)配與室內(nèi)設(shè)計(jì)級(jí)配相比波動(dòng)在允許范圍內(nèi)。

　　7.2.4 According to the indoor test results, new materials shall be spread on the old road without adding stabilizers. Milling shall be carried out according to the scheme determined in 7.2.2. Representative material samples after milling shall be taken and sent to the laboratory for screening. If the screened gradation exceeds the allowable fluctuation range of the construction site compared to the indoor design gradation, the speed of the regeneration machine and rotor shall be adjusted to ensure that the milled gradation fluctuates within the allowable range compared to the indoor design gradation.

　　7.2.5  按照本指南進(jìn)行嚴(yán)格施工，采用1-3種壓實(shí)方案進(jìn)行施工（包括壓路機(jī)噸位、碾壓順序、遍數(shù)等），以確定為合理的碾壓方案。

　　7.2.5 Strictly carry out construction according to this guide, using 1-3 compaction schemes (including roller tonnage, rolling sequence, number of passes, etc.) to determine the most reasonable compaction scheme.

　　7.2.6  取再生機(jī)后經(jīng)銑刨、拌和的混合料，送往試驗(yàn)室，測(cè)定再生混合料的含水量、水泥劑量，并按《公路工程無機(jī)結(jié)合料穩(wěn)定材料試驗(yàn)規(guī)程》（JTJ 57－94）要求成型試件，測(cè)定其7d無側(cè)限抗壓強(qiáng)度。

　　7.2.6 Take the mixture after milling and mixing from the recycling machine, send it to the laboratory, measure the moisture content and cement dosage of the recycled mixture, and form the test piece according to the requirements of the "Test Code for Stable Materials of Inorganic Bonding Materials in Highway Engineering" (JTJ 57-94) to determine its 7-day unconfined compressive strength.

　　7.2.7  對(duì)試驗(yàn)段的彎沉、壓實(shí)度、平整度、厚度、寬度進(jìn)行檢測(cè)，其應(yīng)滿足現(xiàn)行相關(guān)規(guī)范和設(shè)計(jì)要求。

　　7.2.7 The deflection, compaction degree, flatness, thickness, and width of the test section shall be tested to meet the current relevant specifications and design requirements.

　　7.2.8  根據(jù)試驗(yàn)段的結(jié)果終確定再生混合料的級(jí)配、施工時(shí)采用的再生機(jī)行進(jìn)速度、轉(zhuǎn)子速度及再生結(jié)構(gòu)層壓實(shí)工藝。

　　7.2.8 Based on the results of the test section, determine the gradation of the recycled mixture, the speed of the recycling machine used during construction, the rotor speed, and the compaction process of the recycled structural layer.

　　8 施工工藝

　　8 Construction Techniques

　　8.1  水泥穩(wěn)定就地冷再生的工藝流程宜按圖8.1的順序進(jìn)行

　　The process flow of on-site cold regeneration for cement stabilization should be carried out in the order shown in Figure 8.1

　　8.2  整個(gè)施工及養(yǎng)護(hù)過程中，應(yīng)對(duì)再生路段（路幅）封閉交通，各路口設(shè)置警示牌，提醒司機(jī)及行人。

　　During the entire construction and maintenance process, the regenerated road section (road width) should be closed to traffic, and warning signs should be set up at each intersection to remind drivers and pedestrians.

　　圖8.1  水泥穩(wěn)定就地冷再生工藝流程

　　Figure 8.1 Cement stabilization on-site cold recycling process flow

　　8.3  施工放樣

　　8.3 Construction layout

　　8.3.1  在再生施工之前，應(yīng)在道路的兩側(cè)放置一系列的標(biāo)樁（桿）作為基線，用來恢復(fù)道路的中心線。

　　Before the regeneration construction, a series of stakes (poles) should be placed on both sides of the road as baselines to restore the centerline of the road.

　　8.3.2  標(biāo)樁（桿）的間距，曲線距離不應(yīng)超過20米，直線距離不應(yīng)超過40米。

　　8.3.2 The spacing between stakes (poles) should not exceed 20 meters for curved lines and 40 meters for straight lines.

　　8.4  準(zhǔn)備原道路

　　8.4 Prepare the original road

　　8.4.1  原道路表面（包括不需要再生的相臨行車道和路肩）的石塊、垃圾、雜草等雜物和積水，并清理邊線。

　　8.4.1 Remove stones, garbage, weeds, and other debris and standing water from the original road surface (including adjacent lanes and shoulders that do not require regeneration), and clean the edges.

　　8.4.2  再生路段上存在的井蓋等類似結(jié)構(gòu)物。

　　8.4.2 Remove manhole covers and similar structures from the regeneration section.

　　8.4.3  對(duì)原路的翻漿、車轍、沉陷、波浪、坑槽等病害進(jìn)行處理，使原路基本平整。

　　8.4.3 Treat the damages such as mud heave, ruts, subsidence, waves, potholes, etc. on the original road to make it basically flat.

　　8.5  準(zhǔn)備新加料

　　8.5 Prepare new ingredients

　　8.5.1  計(jì)算材料用量：

　　8.5.1 Calculation of Material Consumption:

　　（1）根據(jù)原道路再生深度內(nèi)的平均密度，計(jì)算每平米新料的添加量。

　　(1) Calculate the amount of new material added per square meter based on the average density within the original road regeneration depth.

　?。?）根據(jù)每車料的質(zhì)量或體積，計(jì)算每車料的堆放距離。

　　(2) Calculate the stacking distance of each vehicle based on its mass or volume.

　?。?）人工擺放和撒布水泥，應(yīng)根據(jù)水泥劑量，計(jì)算每一水泥穩(wěn)定層需要的水泥用量，并確定水泥擺放的縱橫間距。使用水泥稀漿車，應(yīng)計(jì)算水泥漿的噴入量。

　　(3) When manually placing and spreading cement, the amount of cement required for each square meter of cement stabilization layer should be calculated based on the cement dosage, and the vertical and horizontal spacing of cement placement should be determined. When using a cement slurry truck, the amount of cement slurry sprayed should be calculated.

　　8.5.2  新加料裝車時(shí)，應(yīng)控制每車料的數(shù)量基本相等。

　　When loading new materials, the quantity of each vehicle should be controlled to be basically equal.

　　8.5.3  在同一料場(chǎng)供料的路段內(nèi)，由遠(yuǎn)到近將料按上述計(jì)算距離卸置于原路面的中間。卸料距離應(yīng)嚴(yán)格掌握，避免有的路段料不夠或過多。

　　8.5.3 In the section of the same material yard where materials are supplied, the materials shall be unloaded in the middle of the original road surface according to the calculated distance from far to near. The unloading distance should be strictly controlled to avoid insufficient or excessive material on some road sections.

　　8.5.4  將新加料均勻地撒布在舊路面上，并檢查新加料撒布是否均勻。

　　8.5.4 Spread the new material evenly on the old road surface and check if the new material is evenly distributed.

　　8.6  冷再生機(jī)組就位

　　8.6 Cold regeneration unit in place

　　8.6.1  使用推桿連接再生機(jī)組，并連接所有與再生機(jī)相連的管道。

　　8.6.1 Use push rods to connect the regeneration unit and connect all pipelines connected to the regeneration machine.

　　8.6.2  檢查再生機(jī)操作人員是否已將所有與穩(wěn)定劑添加量有關(guān)的數(shù)據(jù)輸入計(jì)算機(jī)。

　　8.6.2 Check if the operator of the regeneration machine has entered all data related to the amount of stabilizer added into the computer.

　　8.6.3  人工擺放和撒布水泥。使用水泥稀漿車，應(yīng)檢查水泥稀漿車內(nèi)的水泥和水是否充足。

　　8.6.3 Manual placement and spreading of cement. When using a cement slurry truck, it is necessary to check whether the cement and water inside the truck are sufficient.

　　8.6.4  排除系統(tǒng)中的所有空氣并確保所有閥門均處于全開度位置。

　　8.6.4 Remove all air from the system and ensure that all valves are in the fully open position.

　　8.6.5  檢查再生路段內(nèi)的導(dǎo)向標(biāo)志，確保導(dǎo)向標(biāo)志明確。

　　8.6.5 Check the directional signs within the regeneration section to ensure that they are clear.

　　8.6.6  對(duì)再生施工中所需要的其它機(jī)械設(shè)備進(jìn)行的檢查。

　　8.6.6 Conduct a comprehensive inspection of other mechanical equipment required for regeneration construction.

　　8.7  擺放和撒布水泥（使用水泥稀漿車時(shí)無此步驟）

　　8.7 Placing and spreading cement (this step is not required when using a cement slurry truck)

　　8.7.1  按本章第8.5.2條計(jì)算出的每袋水泥的縱橫間距，在舊路上做好安放標(biāo)記。

　　8.7.1 Calculate the longitudinal and transverse spacing of each bag of cement according to Article 8.5.2 of this chapter, and mark the placement on the old road.

　　8.7.2  應(yīng)將水泥當(dāng)日直接送到撒布路段，卸在做標(biāo)記的地點(diǎn)，并檢查有無遺漏和多余。

　　8.7.2 The cement should be directly delivered to the spreading section on the same day, unloaded at the marked location, and checked for omissions and excess.

　　8.7.3  將水泥均勻攤開，并注意使每袋水泥的撒布面積相等。水泥撒布完后，表面應(yīng)沒有空白位置，也沒有水泥過分集中的地點(diǎn)。

　　8.7.3 Spread the cement evenly and ensure that the spreading area of each bag of cement is equal. After the cement is spread, there should be no blank spaces on the surface or areas where cement is excessively concentrated.

　　8.8  冷再生機(jī)銑刨與拌和

　　8.8 Cold recycling machine milling and mixing

　　8.8.1  冷再生機(jī)推動(dòng)稀漿車或水車在原路面上行進(jìn)。

　　8.8.1 The cold regeneration machine drives the slurry truck or water truck to travel on the original road surface.

　　8.8.2  冷再生機(jī)行進(jìn)速度應(yīng)根據(jù)路面損壞狀況和再生深度進(jìn)行調(diào)整，一般為6m/min～12m/min，使得銑刨后料的級(jí)配波動(dòng)范圍不大。網(wǎng)裂嚴(yán)重地段應(yīng)降低再生機(jī)組行進(jìn)速度，提高銑刨轉(zhuǎn)子轉(zhuǎn)速。

　　8.8.2 The traveling speed of the cold recycling machine should be adjusted according to the damage condition of the road surface and the depth of regeneration, generally ranging from 6m/min to 12m/min, so that the gradation fluctuation range of the milled material is not large. In areas with severe mesh cracking, the speed of the regeneration unit should be reduced and the milling rotor speed should be increased.

　　8.8.3  再生機(jī)后應(yīng)有專人跟隨，隨時(shí)檢查再生深度、水泥含量和含水量，并配合再生機(jī)操作員進(jìn)行調(diào)整。

　　8.8.3 After the regeneration machine, there should be a dedicated person to follow and check the regeneration depth, cement content, and moisture content at any time, and cooperate with the regeneration machine operator to make adjustments.

　　8.8.4  施工中再生深度的檢查以相鄰已經(jīng)再生或原路面為標(biāo)準(zhǔn)，用鋼纖刺入土中，測(cè)量其刺入深度，看其深度是否合格。

　　8.8.4 The inspection of the depth of regeneration during construction shall be based on the adjacent regenerated or original road surface. Steel fibers shall be used to pierce into the soil, and the penetration depth shall be measured to see if it is qualified.

　　8.8.5  應(yīng)在作業(yè)面邊緣固定導(dǎo)向線以幫助操作者。

　　8.8.5 Guide lines should be fixed at the edge of the work surface to assist the operator.

　　8.8.6  若進(jìn)行多刀施工時(shí)，應(yīng)時(shí)刻注意搭接的寬度，保證搭接寬度。

　　8.8.6 When carrying out multi blade construction, attention should be paid to the width of the overlap at all times to ensure the overlap width.

　　8.8.7  再生機(jī)后宜安排4～5人處理邊線和清理混合料中的雜質(zhì)以及每刀起始位置的余料，以防止影響縱向接縫、橫向接縫、平整度和再生材料的密實(shí)性。

　　8.8.7 After regeneration, it is advisable to arrange 4-5 people to handle the edges and clean up impurities in the mixture, as well as the remaining material at the starting position of each knife, to prevent affecting the longitudinal joints, transverse joints, flatness, and compactness of recycled materials.

　　8.8.8  帶有熨平板的再生機(jī)，應(yīng)經(jīng)常檢查熨平板后混合料的厚度。

　　8.8.8 Regeneration machines with ironing plates should regularly check the thickness of the mixture after ironing.

　　8.8.9  在施工過程中，對(duì)混合料的級(jí)配、再生深度、水（或水泥稀漿）的噴入量有任何疑問時(shí)，應(yīng)停止施工，等問題解決后再繼續(xù)施工。

　　8.8.9 During the construction process, if there are any questions about the grading, regeneration depth, or water (or cement slurry) injection amount of the mixture, the construction should be stopped and the problem should be resolved before continuing.

　　8.8.10  每次再生的長(zhǎng)度以保證后續(xù)作業(yè)能正常進(jìn)行為宜，應(yīng)認(rèn)真組織施工，使再生的長(zhǎng)度盡可能長(zhǎng)些，以減少橫向接縫。一次（不停機(jī)）再生的長(zhǎng)度一般為150m～250m。

　　8.8.10 The length of each regeneration should be ensured to ensure the normal progress of subsequent operations. Construction should be carefully organized to make the regeneration length as long as possible to reduce horizontal joints. The length of a single (non-stop) regeneration is generally between 150m and 250m.

　　8.8.11  每段再生結(jié)束后，應(yīng)檢查銑刨轂的刀架、刀頭，發(fā)現(xiàn)損壞立即更換。

　　8.8.11 After each regeneration is completed, the tool holder and cutting head of the milling hub should be inspected, and any damage should be replaced immediately.

　　8.9.  碾壓整形

　　8.9. Rolling and shaping

　　8.9.1  根據(jù)路寬、壓路機(jī)的輪寬和輪距的不同，制訂碾壓方案，應(yīng)使各部分碾壓到的次數(shù)盡量相同，路面的兩側(cè)應(yīng)多壓2~3遍。

　　8.9.1 According to the differences in road width, roller width, and wheelbase, a rolling plan should be formulated to ensure that each part is rolled as frequently as possible, and the two sides of the road surface should be rolled 2-3 times more.

　　8.9.2  使用輪胎式再生機(jī)時(shí)，在整形之前，必須壓實(shí)輪跡間松散的材料。

　　When using a tire type regeneration machine, the loose material between the wheel tracks must be compacted before shaping.

　　8.9.3  在再生機(jī)后應(yīng)緊跟一臺(tái)鋼輪振動(dòng)壓路機(jī)或凸塊式振動(dòng)壓路機(jī)進(jìn)行初壓，采用高幅低頻進(jìn)行壓實(shí)，壓實(shí)遍數(shù)應(yīng)足以保證再生層底部2/3厚度范圍內(nèi)的壓實(shí)度達(dá)到規(guī)定要求。鋼輪壓路機(jī)的工作速度不得超過3km/h。

　　8.9.3 After the regeneration machine, a steel wheel vibration roller or a convex block vibration roller should be followed for initial compaction, using high amplitude and low frequency compaction. The number of compaction passes should be sufficient to ensure that the compaction degree within 2/3 of the thickness range of the bottom of the regeneration layer meets the specified requirements. The working speed of the steel wheel roller shall not exceed 3km/h.

　　8.9.4  在初壓完成后，應(yīng)立即用平地機(jī)整形。在直線段，平地機(jī)由兩側(cè)向路中心進(jìn)行刮平；在平曲線段，平地機(jī)由內(nèi)側(cè)向外側(cè)進(jìn)行刮平。必要時(shí)，再返回刮一遍。

　　8.9.4 After the initial pressing is completed, the grader should be used immediately for shaping. In the straight section, the grader flattens from both sides towards the center of the road; On the flat curve section, the grader flattens from the inside to the outside. If necessary, go back and scrape again.

　　8.9.5  對(duì)于局部低洼處，應(yīng)用齒耙將其表層5cm以上耙松，并用新拌的混合料進(jìn)行找平。

　　8.9.5 For locally low-lying areas, use a toothed rake to loosen the surface layer by more than 5cm and level it with freshly mixed material.

　　8.9.6  整形時(shí)應(yīng)將高處料直接刮出路外，不應(yīng)形成薄層貼補(bǔ)現(xiàn)象。

　　During plastic surgery, the high material should be directly scraped out of the road without forming a thin layer of patching.

　　8.9.7  在整形過程中，嚴(yán)禁任何車輛通行，并保持無明顯的粗細(xì)集料離析現(xiàn)象。

　　8.9.7 During the plastic surgery process, it is strictly prohibited for any vehicle to pass through and there should be no obvious separation of coarse and fine aggregates.

　　8.9.8  整形后，當(dāng)混合料的含水量為含水量時(shí)，應(yīng)立即用光輪壓路機(jī)先以高幅低頻振動(dòng)模式后以低幅高頻模式進(jìn)行壓實(shí)。直線和不設(shè)超高的平曲線段，由路肩向路中心碾時(shí)，應(yīng)重疊1/2輪寬，后輪必須超過兩段的接縫處，后輪壓完路面全寬時(shí)，即為一遍。一般需碾壓6~8遍。壓路機(jī)的碾壓速度，頭兩遍以采用1.5~1.7km/h為宜，以后宜采用2.0~2.5km/h。

　　After shaping, when the moisture content of the mixture reaches the optimal moisture content, a smooth wheel roller should be used immediately to compact it in high amplitude low-frequency vibration mode and then in low amplitude high-frequency mode. When rolling straight lines and flat curved sections without superelevation from the shoulder to the center of the road, they should overlap by 1/2 of the wheel width, and the rear wheel must exceed the joint between the two sections. When the rear wheel presses the full width of the road surface, it is considered as one pass. Generally, it needs to be rolled 6-8 times. The rolling speed of the road roller should be 1.5-1.7km/h for the first two passes, and 2.0-2.5km/h for subsequent passes.

　　8.9.9  嚴(yán)禁壓路機(jī)在已完成的或正在碾壓的路段上調(diào)頭或急剎車，應(yīng)保證再生層表面不受破壞。

　　8.9.9 It is strictly prohibited for the roller to turn around or brake abruptly on the completed or rolling road section, and the surface of the regeneration layer should be ensured not to be damaged.

　　8.9.10  碾壓過程中，再生層的表面應(yīng)始終保持濕潤(rùn)，如水分蒸發(fā)過快，應(yīng)及時(shí)補(bǔ)撒少量的水，但嚴(yán)禁大量灑水碾壓。

　　During the rolling process, the surface of the recycled layer should always be kept moist. If the water evaporates too quickly, a small amount of water should be sprinkled in a timely manner, but it is strictly prohibited to sprinkle a large amount of water for rolling.

　　8.9.11  碾壓過程中，如有“彈簧”、松散、起皮等現(xiàn)象，應(yīng)及時(shí)翻開重新拌和（加適量的水泥）或用其他方法處理，使其達(dá)到質(zhì)量要求。

　　During the rolling process, if there are "springs", looseness, peeling and other phenomena, they should be promptly opened and re mixed (with an appropriate amount of cement) or treated with other methods to meet the quality requirements.

　　8.9.12  經(jīng)過拌和、整形的水泥穩(wěn)定就地冷再生層，宜在水泥初凝前并應(yīng)在試驗(yàn)確定的延遲時(shí)間內(nèi)完成碾壓，并達(dá)到要求的密實(shí)度，同時(shí)沒有明顯的輪跡。

　　8.9.12 After mixing and shaping, the cement stabilized in-situ cold recycling layer should be compacted before the initial setting of the cement and within the delay time determined by the test, and achieve the required density without obvious wheel marks.

　　8.9.13  在碾壓結(jié)束之前，用平地機(jī)再終平一次，使其縱向順適，路拱和超高符合設(shè)計(jì)要求。終平應(yīng)仔細(xì)進(jìn)行，必須將局部高出部分刮除并掃出路外；對(duì)于局部低洼之處，不再進(jìn)行找補(bǔ)，可留待鋪筑瀝青面層時(shí)處理。

　　Before the rolling is completed, use a grader to level it again to make it longitudinally smooth and the road arch and superelevation meet the design requirements. The final leveling should be carried out carefully, and the locally raised parts must be scraped off and swept out of the road; For locally low-lying areas, no further repairs will be made and can be left to be dealt with when laying the asphalt surface layer.

　　8.10  接縫和調(diào)頭處的處理

　　8.10 Treatment of seams and turning points

　　8.10.1  縱向接縫的處理

　　8.10.1 Treatment of longitudinal seams

　?。?）道路寬度小于7m，縱向重疊較多時(shí)，不宜半幅施工，應(yīng)考慮全幅施工，以減少重疊量，提高施工效率。

　　(1) When the road width is less than 7m and there is a lot of longitudinal overlap, it is not suitable to carry out half width construction. Full width construction should be considered to reduce the amount of overlap and improve construction efficiency.

　?。?）一般重疊寬度為50-150mm。

　　(2) The general overlap width is 50-150mm.

　　（3）路面材料越厚，材料粒度越粗，重疊量越大。

　　(3) The thicker the pavement material, the coarser the particle size of the material, and the greater the overlap.

　?。?）相鄰兩次作業(yè)間隔12h以上時(shí)，重疊量應(yīng)增加。

　　(4) When the interval between two adjacent assignments is more than 12 hours, the overlap should be increased.

　　（5）在縱向接縫上，根據(jù)已建再生層的完成時(shí)間，改變水泥稀漿（或水）的噴入量。

　　(5) On the longitudinal joint, adjust the amount of cement slurry (or water) sprayed according to the completion time of the existing regeneration layer.

　　（6）縱向接縫的位置應(yīng)盡量避開慢行、重型車輛的輪跡。

　　(6) The position of longitudinal joints should avoid the wheel tracks of slow-moving and heavy vehicles as much as possible.

　　8.10.2  橫向接縫的處理

　　8.10.2 Treatment of transverse joints

　?。?） 應(yīng)對(duì)所形成的橫向接縫認(rèn)真處理，施工中應(yīng)盡量減少停機(jī)現(xiàn)象。

　　(1) Handle the horizontal joints carefully and minimize downtime during construction.

　?。?） 停機(jī)超過水泥初凝時(shí)間，再生機(jī)再次施工時(shí)，必須將整個(gè)再生機(jī)后退再生過的路段1.5m的距離，并重新撒布水泥。

　　(2) When the shutdown exceeds the initial setting time of the cement and the regeneration machine is restarted, the entire regeneration machine must be moved back to a distance of 1.5 meters from the regenerated section and the cement must be re spread.

　　8.10.3  調(diào)頭處的處理

　　8.10.3 Handling of Turning Points

　　如機(jī)械必須到已壓成的水泥穩(wěn)定就地冷再生層上調(diào)頭，應(yīng)采取措施保護(hù)調(diào)頭作業(yè)段。一般可在準(zhǔn)備用于調(diào)頭的約8~10m長(zhǎng)的穩(wěn)定土上，先覆蓋一張厚塑料布或油氈紙，然后鋪上約10cm厚的土、砂或砂礫。

　　If the machinery must be turned on the stabilized on-site cold regeneration layer of the already pressed cement, measures should be taken to protect the turning operation section. Generally, on a stable soil of about 8-10 meters long that is prepared for turning, a thick plastic cloth or oil felt paper can be covered first, and then about 10 cm thick soil, sand or gravel can be laid on top.

　　9 養(yǎng)生及交通管制

　　9 Health Preservation and Traffic Control

　　9.1  水泥穩(wěn)定就地冷再生層宜養(yǎng)生7d后鋪筑上層混合料。如果上層混合料仍為無機(jī)結(jié)合料穩(wěn)定類材料時(shí)，宜在下層表面撒少量水泥或水泥漿。

　　9.1 The cement stabilized in-situ cold regeneration layer should be cured for 7 days before laying the upper layer mixture. If the upper mixture is still a stable inorganic binder material, it is advisable to sprinkle a small amount of cement or cement slurry on the surface of the lower layer.

　　9.2  每一段碾壓完成并經(jīng)壓實(shí)度檢查合格后，應(yīng)立即開始養(yǎng)生。

　　After each section of compaction is completed and passes the compaction degree inspection, the curing process should begin immediately.

　　9.3  宜采用覆蓋（吸水土工布等）進(jìn)行養(yǎng)生。養(yǎng)生結(jié)束后，必須將覆蓋物干凈。

　　9.3 It is advisable to use coverings (such as absorbent geotextiles) for health preservation. After the health preservation is completed, the covering must be cleaned thoroughly.

　　9.4  對(duì)于基層，可采用瀝青乳液進(jìn)行養(yǎng)生。

　　9.4 For the base course, asphalt lotion can be used for curing.

　　9.5  無上述條件時(shí)，也可用灑水車經(jīng)常灑水進(jìn)行養(yǎng)生。每天灑水的次數(shù)應(yīng)視氣候而定。整個(gè)養(yǎng)生期間應(yīng)始終保持穩(wěn)定土層表面潮濕，應(yīng)注意表層情況，必要時(shí)，用兩輪壓路機(jī)壓實(shí)。

　　When the above conditions are not met, a sprinkler truck can also be used to regularly sprinkle water for health preservation. The frequency of watering per day should depend on the climate. Throughout the entire health preservation period, the surface of the soil layer should be kept stable and moist. Attention should be paid to the surface condition, and if necessary, a two wheeled roller should be used to compact it.

　　9.6  基層的養(yǎng)生期不宜少于7d。

　　The health maintenance period at the grassroots level should not be less than 7 days.

　　9.7  在養(yǎng)生期間未采用覆蓋措施的水泥穩(wěn)定就地冷再生層上，除灑水車外，應(yīng)封閉交通。不能封閉交通時(shí)，應(yīng)限制重車通行，其他車輛的車速不應(yīng)超過30km/h。

　　During the health preservation period, if no covering measures are taken on the cement stabilized in-situ cold regeneration layer, traffic should be closed except for the sprinkler truck. When traffic cannot be closed, the passage of heavy vehicles should be restricted, and the speed of other vehicles should not exceed 30km/h.

　　10   質(zhì)量控制

　　10 Quality Control

　　10.1  材料應(yīng)滿足混合料組成設(shè)計(jì)中相關(guān)要求。

　　10.1 The material should meet the relevant requirements in the mix composition design.

　　10.2  嚴(yán)格按照施工工藝要求認(rèn)真施工。

　　10.2 Strictly follow the construction process requirements and construct diligently.

　　10.3  如發(fā)生未預(yù)料的特殊情況，可能會(huì)影響工程質(zhì)量的應(yīng)立即停工，待問題解決后再繼續(xù)施工。

　　10.3 In case of unforeseen special circumstances that may affect the quality of the project, the work should be immediately suspended until the problem is resolved before resuming construction.

　　10.4  質(zhì)量控制標(biāo)準(zhǔn)應(yīng)符合表10.1要求，評(píng)定標(biāo)準(zhǔn)應(yīng)符合表10.2要求，表中允許偏差均指與設(shè)計(jì)值之差。

　　10.4 The quality control standards shall comply with the requirements of Table 10.1, and the evaluation criteria shall comply with the requirements of Table 10.2. The allowable deviations in the table refer to the difference from the design values.

　　10.5  包括再生層在內(nèi)的其他檢測(cè)項(xiàng)目應(yīng)符合《公路工程質(zhì)量檢驗(yàn)評(píng)定標(biāo)準(zhǔn)》（JTG F80/1-2004）中相關(guān)規(guī)定。

　　10.5 Other testing items, including the regeneration layer, shall comply with the relevant provisions of the "Quality Inspection and Evaluation Standards for Highway Engineering" (JTG F80/1-2004).

　　10.6  碾壓合格后應(yīng)立即覆蓋或?yàn)⑺B(yǎng)生，養(yǎng)生期應(yīng)符合指南要求。

　　10.6 After passing the compaction, it should be immediately covered or watered for curing, and the curing period should meet the requirements of the guidelines.

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