公司新闻
冷再生基层施工要注意什么？
来源：https://www.sddhfjx.com/ 日期：2021-08-06
材料要求：水泥选用强度等级为32.5、初凝时间≥3h、终凝时间≤10h且≥6h硅酸盐或普通硅酸盐水泥。水泥应具有良好的工作性、低水化、高后期强度、耐久性、耐腐蚀性和抗裂性能。
Material requirements: Portland or ordinary portland cement with strength grade of 32.5, initial setting time ≥ 3h, final setting time ≤ 10h and ≥ 6h shall be selected. The cement shall have good workability, low hydration, high late strength, durability, corrosion resistance and crack resistance.
机械要求：工程施工过程通过再生机组来完成，再生机组包括：冷再生主机、水泥稀浆车、平地机、压路机等。
Mechanical requirements: the construction process of the project is completed by regeneration unit, which includes cold regeneration host, cement slurry truck, grader, roller, etc.
人员要求：工程技术人员及机械操作人员应经过冷再生培训并经过考核合格后方可上岗。
Personnel requirements: engineering technicians and mechanical operators shall receive cold regeneration training and pass the examination before taking up their posts.
工程协调：作好施工总体计划，采取不中断交通半幅施工，作好施工期间交通疏导工作，准备施工作业面的遮挡。
Project coordination: make the overall construction plan, take half width construction without interrupting traffic, do a good job in traffic dredging during construction, and prepare for the shelter of the construction surface.
对原路面的路况进行测量和调查，对高于原路面标高5cm以上的地方用铣刨机进行铣刨，并将铣刨后的旧路材料填于低于原路面标高5cm以上的坑槽。
Measure and investigate the road conditions of the original pavement, use a milling machine to mill the places 5cm above the original pavement elevation, and fill the milled old road materials in the pits 5cm above the original pavement elevation.
对原路进行加密挖验，将原沥青路面用再生机取样进行标准击实试验，确定佳含水量、大干密度。
The original road shall be intensively excavated and inspected, and the original asphalt pavement shall be sampled with a recycling machine for standard compaction test to determine the good water content and large dry density.
施工过程中根据再生料含水量情况及时调整再生机设定的用水量，密切注意天气变化，避免在雨天进行再生施工。
During construction, the water consumption set by the regenerator shall be adjusted in time according to the water content of recycled materials, and pay close attention to weather changes to avoid regeneration construction in rainy days.
试验段施工
Construction of test section
工程正式开工前，选取300m的道路作为试验路段，以确定现有道路的情况是否与设计要求相吻合，并在冷再生的级配、转子的转速及再生机械行走速度、压实工艺几个方面开展工作，为其余路段正式施工积累必要的数据。
Before the formal commencement of the project, 300m road is selected as the test section to determine whether the condition of the existing road is consistent with the design requirements, and work is carried out in the aspects of cold regeneration gradation, rotor speed, walking speed of regeneration machinery and compaction process, so as to accumulate necessary data for the formal construction of other sections.
碾压
Rolling
当平地机对再生层找平后，采用22T振动压路机(前进时静压，返回时振动)碾压1遍，之后用自重26T振动压路机进行碾压2～3遍，后用胶轮压路机终压1遍。碾压过程中按规范要求严格控制平整度。
After leveling the regeneration layer with grader, use 22T vibratory roller (static pressure when moving forward and vibration when returning) for rolling once, then use self weight 26t vibratory roller for rolling for 2 ~ 3 times, and then use rubber tyred roller for final rolling once. During rolling, the flatness shall be strictly controlled according to the specification requirements.
碾压检测合格后及时采用塑料薄膜覆盖养生，养生期内中断所有交通。因五一路比较繁忙，养生期为7d.养生期间冷再生基层表面始终保持湿润，每天专人看管，确保再生层不因养生不当产生损坏。
After the rolling inspection is qualified, the plastic film shall be used to cover the curing in time, and all traffic shall be interrupted during the curing period. As Wuyi Road is busy, the curing period is 7d. During the curing period, the surface of cold recycled base course is always wet, and special personnel are assigned to take care of it every day to ensure that the recycled layer is not damaged due to improper curing.
公司地址：济南市槐荫区经一路273号群盛华城2号楼1-404
公司名称：山东途畅路桥工程有限公司 
备案号：