摘要
再生混凝土经高温冷却后,其主要力学性能指标将发生变化。完成了144块不同再生骨料取代率(0,50%,100%)的再生混凝土立方体试块在20～800℃高温后的抗压强度试验。通过对试验现象与结果的分析,研究了高温后再生混凝土的残余抗压强度与所经历温度之间的相互关系,提出了高温后再生混凝土残余抗压强度与所经历温度之间关系的拟合回归公式。
After high temperature and cooling, the main mechanical properties of recycled concrete will change.Based on the compressive test of 144 cube specimens heated at the high temperature ranging 20-800 ℃, the fire behavior of recycled concrete （0,50%, 100% ） was investigated. The relationship between the residual compressive strength and the temperature was studied.The empirical formulas of residual compressive strength for recycled concrete and elevated temperature were given by regression on the test results.
出处
《混凝土》
CAS
CSCD
北大核心
2012年第11期42-44,共3页
Concrete
基金
国家十二五科技支撑计划(2011BAJ08B04)
关键词
再生骨料
再生混凝土
高温
抗压强度
recycled aggregate
recycled concrete
elevated temperature
compressive strength
