公司新聞
水泥就地冷再生技術特點介紹
來源：http://www.cansolv.cn/ 日期：2021-09-20
1、冷再生工藝有其適用性，先期路面診斷很必要。水泥就地冷再生工藝一般是對原路面進行銑刨、整平、碾壓再成層的施工技術，他只是對于淺層（不大于25cm）路面結構的再生利用，所以對于路面結構下層的病害沒有修復作用。對于路面基層承載力不足，彎沉值過大等情況需要進行深層處理以恢復路面的使用功能，簡單的一層冷再生工藝不能起到長效的效果。
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、冷再生層級配的檢測與調整會影響到再生層的質量。冷再生層根據原有路面的結構有灰土基層的冷再生、二灰碎石基層冷再生與水穩碎石基層冷再生。對于灰土基層的冷再生一定要慎重，建議只當路面底基層使用。相同水泥劑量情況下，路面基層級配合適與否直接影響其強度，所以經篩分不滿足級配要求的銑刨料須添加新料進行調整。
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、水泥劑量的確定也會直接影響到再生層的質量。適宜的水泥劑量不僅可以避免因水泥劑量不足而導致的強度不足現象，而且可以減少因水泥劑量過大而造成的基層應力收縮裂縫現象，延長道路的壽命。
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、水泥的選用至關重要。水泥冷再生并不是使用任何水泥都可以，它有嚴格的要求。它對水泥結合料的要求基本與水泥穩定碎石對水泥的要求相同，需要初凝時間大于3小時，終凝時間大于6小時的緩凝水泥。
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、施工用水的選擇。看似無關緊要的因素，但可能因使用雜質過多或鹽離子過多的施工用水，致使工程質量出現問題。
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、水泥攤鋪的均勻程度直接影響強度的均勻性。
6. The uniformity of cement paving directly affects the uniformity of strength.
7、合理的整平時機會影響再生層的內在質量。一般再生機自重都較重，再生后兩輪間與輪跡處密實度會存在很大的差異性，如何消除此間差異性后再刮平直接會影響到再生層內部密實度的均勻性。
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、碾壓組合的確定是保證壓實度的關鍵所在。根據再生層厚度不同選用不同的碾壓設備需要在試驗路段進行驗證完成。一般配備震動壓路機，膠輪壓路機、三輪平碾各一臺，對于個別施工隊伍為節省費用而只選用一臺震動壓路機的做法是沒法保證內在壓實度要求的。
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、養生。養生的方法有多種：噴灑透層瀝青、灑水、覆蓋塑料薄膜等，養生期間斷絕或限制交通。
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.
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公司名稱：山東途暢路橋工程有限公司 
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