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为了减少混凝土道面的早期收缩裂缝,对道面施工过程中抹面工艺和冷水养护环节进行室内试验。首先确定试验的原材料和配合比,进而比较了不同抹面次数对混凝土抗裂性的影响;针对青藏高原地区养护用水温度过低问题,采用复合无纺布土工膜覆盖养护技术解决了此难题。试验结果表明,这两种方法都可以有效减少早期裂缝地产生,值得推广。
In order to reduce the early shrinkage cracks of concrete pavement, the pavement surface process and cold-water conservation during the construction of an indoor test. First determine the test of raw materials and mix, and then compare the different number of plaster on the concrete crack resistance; for the Qinghai-Tibet Plateau curing water temperature is too low, the use of composite non-woven geomembrane covered curing technology to solve this problem. The experimental results show that both of these methods can effectively reduce the generation of early cracks and are worthy of promotion.