As for hydraulic tunnel lining concrete, thermal stress is one of important factors that cause concrete cracks, due to the heat of hydration of cement in the construction period.
对于水工隧洞衬砌混凝土，在施工期由于水泥水化热作用，温度应力影响显著，是产生混凝土结构裂缝的重要原因之一。
It was necessary and feasible to study the design to prevent reflecting cracks on the asphalt overlaid on the old cement concrete pavement.
因此继续开展旧水泥混凝土路面上加铺沥青面层防治反射裂缝设计方法的研究，是必要而且是可行的。
Mainly for the asphalt pavement cracks, pits and side issues such as eating, cement concrete pavement surface is also a serious breaking of the rupture and other issues.
沥青路面主要表现为裂缝、坑槽和啃边等问题，水泥混凝土路面也出现严重的挤碎、破裂等问题。
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