轻质微膨胀混凝土配合比试验研究

Test research of lightweight aggregate and slight expand concrete

采用页岩陶粒作为轻骨料 ,加入减水剂、膨胀剂等 ,配制出了八种不同配合比的轻骨料混凝土与普通混凝土 ,并对其和易性、强度、干表观密度、变形等主要性能指标进行了实验研究 ,得到强度等级 CL40、密度等级 1 80 0的轻骨料中高强度微膨胀混凝土最佳配合比。研究成果可广泛地应用于桥梁的加固改造。

In this paper, eight concrete samples of different compound ratio of shale pottery grain, water reducing agent, expanding agent, etc, are compounded, based on the research of their main properties such as agitating property, strength, dry surface density and deformation, an optimum compound ratio of the concrete with high intensity(CL40), light density(1800) and slight expand is defined. The achievement can be generally applied to the work of bridge rehabilitation.