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水泥就地冷再生技术特点介绍
来源：//www.symbolname.com/ 日期：2021-09-20
1、冷再生工艺有其适用性，先期路面诊断很必要。水泥就地冷再生工艺一般是对原路面进行铣刨、整平、碾压再成层的施工技术，他只是对于浅层（不大于25cm）路面结构的再生利用，所以对于路面结构下层的病害没有修复作用。对于路面基层承载力不足，弯沉值过大等情况需要进行深层处理以恢复路面的使用功能，简单的一层冷再生工艺不能起到长效的效果。
1. Cold recycling technology has its applicability, and early pavement diagnosis is very necessary. The cement in-situ cold recycling process is generally the construction technology of milling, leveling, rolling and re layering the original pavement. It is only the recycling of shallow (no more than 25cm) pavement structure, so it has no repair effect on the diseases of the lower layer of pavement structure. In case of insufficient bearing capacity of pavement base and excessive deflection value, deep treatment needs to be carried out to restore the use function of pavement. The simple one-layer cold regeneration process can not play a long-term effect.
2、冷再生层级配的检测与调整会影响到再生层的质量。冷再生层根据原有路面的结构有灰土基层的冷再生、二灰碎石基层冷再生与水稳碎石基层冷再生。对于灰土基层的冷再生一定要慎重，建议只当路面底基层使用。相同水泥剂量情况下，路面基层级配合适与否直接影响其强度，所以经筛分不满足级配要求的铣刨料须添加新料进行调整。
2. The detection and adjustment of cold regeneration layer configuration will affect the quality of regeneration layer. According to the structure of the original pavement, the cold regeneration layer includes the cold regeneration of lime soil base, lime fly ash macadam base and water stabilized macadam base. The cold regeneration of lime soil base course must be cautious, and it is recommended to use it only for pavement subbase. Under the condition of the same cement dosage, whether the pavement base course gradation is appropriate or not directly affects its strength, so the milling materials that do not meet the gradation requirements after screening must be added with new materials for adjustment.
3、水泥剂量的确定也会直接影响到再生层的质量。适宜的水泥剂量不仅可以避免因水泥剂量不足而导致的强度不足现象，而且可以减少因水泥剂量过大而造成的基层应力收缩裂缝现象，延长道路的寿命。
3. The determination of cement dosage will also directly affect the quality of regeneration layer. Appropriate cement dosage can not only avoid the phenomenon of insufficient strength caused by insufficient cement dosage, but also reduce the phenomenon of stress shrinkage cracks caused by excessive cement dosage and prolong the service life of the road.
4、水泥的选用关重要。水泥冷再生并不是使用任何水泥都可以，它有严格的要求。它对水泥结合料的要求基本与水泥稳定碎石对水泥的要求相同，需要初凝时间大于3小时，终凝时间大于6小时的缓凝水泥。
4. The selection of cement is very important. Cement cold recycling is not possible with any cement, it has strict requirements. Its requirements for cement binder are basically the same as those for cement stabilized macadam. Retarded cement with initial setting time greater than 3 hours and final setting time greater than 6 hours is required.
5、施工用水的选择。看似无关紧要的因素，但可能因使用杂质过多或盐离子过多的施工用水，致使工程质量出现问题。
5. Selection of construction water. Seemingly insignificant factors, but there may be problems in project quality due to the use of construction water with too many impurities or too many salt ions.
6、水泥摊铺的均匀程度直接影响强度的均匀性。
6. The uniformity of cement paving directly affects the uniformity of strength.
7、合理的整平时机会影响再生层的内在质量。一般再生机自重都较重，再生后两轮间与轮迹处密实度会存在很大的差异性，如何此间差异性后再刮平直接会影响到再生层内部密实度的均匀性。
7. Reasonable leveling will affect the internal quality of the regeneration layer. Generally, the self weight of the regenerator is heavy, and there will be great differences in the compactness between the two wheels and the wheel track after regeneration. How to eliminate this difference and then scrape it will directly affect the uniformity of compactness in the regeneration layer.
8、碾压组合的确定是保证压实度的关键所在。根据再生层厚度不同选用不同的碾压设备需要在试验路段进行验证完成。一般配备震动压路机，胶轮压路机、三轮平碾各一台，对于个别施工队伍为节省费用而只选用一台震动压路机的做法是没法保证内在压实度要求的。
8. The determination of rolling combination is the key to ensure the degree of compaction. Different rolling equipment shall be selected according to the thickness of the regeneration layer, which shall be verified in the test section. Generally, one vibratory roller, one rubber tyred roller and one three wheeled flat roller are equipped. It is impossible to ensure the internal compactness requirements for individual construction teams to select only one vibratory roller in order to save costs.
9、养生。养生的方法有多种：喷洒透层沥青、洒水、覆盖塑料薄膜等，养生期间断绝或限制交通。
9. Health preservation. There are many methods for curing: spraying prime coat asphalt, watering, covering plastic film, etc. during curing, cut off or restrict traffic.
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 
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