北京地区基坑湿喷混凝土实验室配比研究

Study on foundation wet shotcrete laboratory mixing proportion of Beijing

介绍了湿喷混凝土原材料的选择原则,确定了实验室配比的相关指标,并通过正交试验,从水泥用量、砂率、水灰比等方面,分析了影响喷射混凝土坍落度的主要因素,得到了最优的配比方案。

The paper introduces raw material selecting principles of wet shotcrete,and determines relevant laboratory mixing proportion index.Through orthogonal test,starting from aspects of cement quantity,sand coarse aggregate ratio and water-concrete ratio,it analyzes major factors influencing wet shotcrete collapse degree,and finally obtains optimal mixing proportion scheme.