高速公路是公路交通系統(tǒng)的核心構(gòu)成部分， 高速公路多采用瀝青路面，傳統(tǒng)的修整方法是銑刨舊面層和新面層疊加，造價高、資源消耗大。冷再生施工技術(shù)施工快捷，且對原來交通幾乎沒有影響[1]，在施工中既能減少對自然資源（能源、集料等）的需求，節(jié)約項目費(fèi)用[2]，又能降低環(huán)境污染。

Highways are the core component of the highway transportation system, and most highways use asphalt pavement. The traditional repair method is to mill and overlay the old and new surface layers, which is costly and resource intensive. Cold recycling construction technology is fast and has almost no impact on the original transportation [1]. During construction, it can reduce the demand for natural resources (energy, aggregates, etc.), save project costs [2], and reduce environmental pollution.

在工程建設(shè)前做好施工準(zhǔn)備工作， 現(xiàn)場冷再生施工需要用到的全部設(shè)備應(yīng)準(zhǔn)備妥當(dāng)， 并選擇一段待修復(fù)路段進(jìn)行試車，檢測所使用的再生設(shè)備及流程是否符合再建規(guī)范。同時，調(diào)節(jié)相關(guān)設(shè)備的參數(shù)，使其滿足施工需要，以此保證壓實度。

Before the construction of the project, make good preparations for the construction. All equipment required for on-site cold regeneration construction should be prepared properly, and a section of the road to be repaired should be selected for trial operation to test whether the regeneration equipment and process used comply with the reconstruction standards. At the same time, adjust the parameters of the relevant equipment to meet the construction needs, in order to ensure compaction.

對水泥穩(wěn)定再生結(jié)構(gòu)層作業(yè)時，日低溫度宜＞5 ℃。結(jié)合經(jīng)驗與使用設(shè)備的特性， 擬定 3~5 種再生機(jī)前進(jìn)速度與轉(zhuǎn)子速度的搭配方案，舊路銑刨深度要根據(jù)設(shè)計修復(fù)深確定。銑刨出舊料后， 將刨出的較典型的物料送到實驗室做室內(nèi)配比設(shè)計。取銑刨后具有代表性的材料樣品進(jìn)行篩分，如果篩分后的級配與室內(nèi)設(shè)計級配超過工地允許波動范圍， 應(yīng)調(diào)整再生機(jī)行進(jìn)速度和轉(zhuǎn)子速度， 使銑刨后的材料粒徑與室內(nèi)設(shè)計級配相比波動在允許范圍內(nèi)。

When working on the stable regeneration structure layer of cement, the daily low temperature should be greater than 5 ℃. Based on experience and the characteristics of the equipment used, formulate 3-5 combinations of forward speed and rotor speed for the regeneration machine. The depth of old road milling and planing should be determined according to the design repair depth. After milling and planing out the old materials, the more typical materials will be sent to the laboratory for indoor mix design. Take representative material samples after milling and planing for sieving. If the sieved gradation exceeds the allowable fluctuation range of the indoor design gradation, the traveling speed and rotor speed of the regeneration machine should be adjusted to ensure that the particle size of the milled material fluctuates within the allowable range compared to the indoor design gradation.

1）冷再生機(jī)驅(qū)動稀漿車或水車沿著舊路前進(jìn)。按照路面破 損 程 度 與 再 生 深 度 調(diào) 節(jié) 冷 再 生 機(jī) 的 前 進(jìn) 速 度 ， 通 常 在6~12 m/min，這樣銑刨后材料的粒徑波動范圍不大。網(wǎng)裂比較厲害的路段要緩慢前行。2）依據(jù)道路兩邊的水平控制樁及時檢查銑刨深度是否準(zhǔn)確，若銑刨深度在設(shè)計深度±1 cm 以上，需要盡快把原因查清才能繼續(xù)作業(yè)，并安排專人跟在再生機(jī)后面及時對深度、水泥含量、含水率進(jìn)行檢測，同時與操控人員協(xié)作施工。

1) The cold regeneration machine drives the slurry truck or water truck along the old road. Adjust the forward speed of cold regeneration according to the degree of road damage and regeneration depth, usually between 6-12 m/min, so that the fluctuation range of material particle size after milling is not large. Road sections with severe network cracks should move forward slowly. 2) According to the horizontal control piles on both sides of the road, timely check whether the milling depth is accurate. If the milling depth is above the design depth of ± 1 cm, the cause needs to be identified as soon as possible before continuing the operation. Assign a dedicated person to follow the revitalization process to timely inspect the depth, cement content, and moisture content, and cooperate with the control personnel for construction.

3）施工期間，按鄰近已修復(fù)或舊路面為基準(zhǔn)對再生深度進(jìn)行檢測， 用鋼釬刺入混合料中， 測量再生深度是否符合要求 ， 應(yīng) 在 再 生 機(jī) 銑 刨 刀 具 的 兩 側(cè) 進(jìn) 行 檢 查 ， 其 余 路 段 按30~50 m 測 1 次的頻率進(jìn)行檢測。為了方便操作人員進(jìn)行作業(yè)，應(yīng)在作業(yè)面邊緣固定導(dǎo)向線。

3) During the construction period, the depth of regeneration shall be tested based on the adjacent repaired or old road surface. Steel drills shall be inserted into the mixture to measure whether the regeneration depth meets the requirements. Inspection shall be carried out on both sides of the regeneration machine milling tool, and the remaining road sections shall be tested at a frequency of 30-50 meters. For the convenience of operators, guide lines should be fixed at the edges of the work surface.

4）若進(jìn)行多列銑刨刀具施工時，應(yīng)時刻注意搭接寬度，保證搭接寬度。為了避免對橫、 縱向接縫以及再生物料的緊密性、平整度造成影響，指派 4~5 人跟在再生機(jī)后面對邊線進(jìn)行整理，清理混合料中的雜質(zhì)以及每刀起始位置的余料。

4) When carrying out multi row milling and planing tool construction, attention should be paid to the overlap width at all times to ensure the overlap width. In order to avoid affecting the tightness and flatness of the horizontal and vertical joints as well as the recycled materials, 4-5 people are assigned to follow behind the recycling machine to tidy up the edges, clean up impurities in the mixture, and remove any remaining material at the starting position of each blade.

5）在施工期間，時刻查驗冷再生材料的粒徑和銑刨深度，若察覺出隱患，要及時中斷作業(yè)，掉隱患再繼續(xù)施工，并確保之后的操作順利。再生路面作業(yè)面的長度應(yīng)滿足要求，通常單個作業(yè)面的長度制在 150~250 m。

5) During the construction period, the particle size and milling depth of the cold recycled material should be checked at all times. If any hidden dangers are detected, the operation should be interrupted in a timely manner, and the hidden dangers should be removed before continuing the construction, ensuring smooth subsequent operations. The length of the recycled pavement working surface should meet the requirements, and the length of a single working surface is usually limited to 150-250 meters.

采用乳化瀝青、泡沫瀝青為再生材料的結(jié)合料時，鋪裝厚在 100~200 mm；采用水泥和石灰時，鋪裝厚在 200~300 mm。混合料攤鋪后，不得有離析、波浪、裂痕及拉痕現(xiàn)象。如使用攤鋪機(jī)施工，要保持緩慢、均勻、連續(xù)施工，不可任意改變速度或中途停頓[3]，鋪裝速度為 2~4 m2/min。若混合料鋪裝后有離析、波浪、裂痕及拉痕現(xiàn)象，要分析原因并采取措施解決。

When emulsified asphalt and foam asphalt are used as the binder of recycled materials, the pavement thickness is 100~200 mm; When using cement and lime, the paving thickness should be between 200-300 mm. After the mixture is spread, there should be no segregation, waves, cracks, or pulling marks. If using a paver for construction, it is necessary to maintain slow, uniform, and continuous construction, and the speed cannot be changed arbitrarily or stopped midway [3]. The paving speed is 2-4 m2/min. If there are segregation, waves, cracks, and pulling marks in the mixture after paving, the reasons should be analyzed and measures should be taken to solve them.

選擇平地機(jī)施工時，要滿足以下規(guī)則：輕型鋼輪壓路機(jī)跟在再生機(jī)組的后面進(jìn)行 2~3 次初碾壓。每個工作段初碾壓結(jié)束后，使用平地機(jī)進(jìn)行平整。初平區(qū)域要使用輕型鋼輪壓路機(jī)重壓 1 遍，人為對部分車轍及低洼處進(jìn)行修復(fù)。再生層選用平地機(jī)整形，確保坡度與路拱符合規(guī)范要求，整形后，外表不能出現(xiàn)車轍與集料分離情況。

When choosing a grader for construction, the following rules should be met: the lightweight steel wheeled roller should follow the regeneration unit for 2-3 initial rolling. After the initial compaction of each work section is completed, use a grader to level it. The initial flat area needs to be heavily compacted once with a lightweight steel wheeled roller, and some ruts and low-lying areas need to be repaired manually. The regeneration layer is shaped using a grader to ensure that the slope and road arch meet the regulatory requirements. After shaping, there should be no separation of ruts and aggregates on the surface.

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