高温作用后再生混凝土强度的试验研究  

Experimental research on strength of recycled aggregate concrete after high temperature

作　　者：马彦飞[1] 徐晓勇[1] 

机构地区：[1]安阳师范学院土木建筑工程系,河南安阳455002

出　　处：《河南城建学院学报》2010年第4期20-22,28,共4页Journal of Henan University of Urban Construction

基　　金：安阳市科技攻关计划项目(2010-54)

摘　　要：设计了5个混凝土配合比试验，完成了100块不同再生粗骨料取代率（0，25％，50％，75％，100％）的再生混凝土试块在20～800℃下的高温试验，系统地研究了再生混凝土的抗压强度和抗折强度与再生粗骨料取代率以及作用高温之间的关系。通过试验现象和结果分析，探讨了不同再生粗骨料取代率的再生混凝土在经历不同高温作用下的抗压和抗折强度的成因。5 kinds of mixture ratio for conc rete were designed. Based on the test of 100 cube specimens heated at the high temperature ranging 20 - 800℃, the fire behavior of recycled aggregate concrete with different replacement percentages of recycled coarse aggregate （0 ,25%, 50%, 75% , 100%） was investigated. We studied the rela-tionships between the compressive strength and flexural strength with replacement ratio of recycled aggregate, high temperature. The relationship between the compressive strength and flexural strength of recycled aggregate concrete with different replacement percentages of recycled coarse aggregate after the high temperature was analyzed.

关 键 词：再生混凝土 高温 再生粗骨料取代率 强度 

分 类 号：TU528[建筑科学—建筑技术科学]