高温后再生卵石混凝土抗压性能试验研究  

Experimental study on compressive performance of recycled pebble concrete after high temperature

作　　者：苏益声[1] 孟二从 陈宗平[1,2] 陈朋朋[1] 

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004 [2]广西大学广西防灾减灾与工程安全重点实验室,广西南宁530004

出　　处：《混凝土》2014年第8期78-81,87,共5页Concrete

基　　金：高等学校博士学科点专项科研基金联合资助项目(20134501110001);广西理工科学实验中心重点项目(LGZX201102);广西防灾减灾与工程安全重点实验室项目(20122DX02)

摘　　要：为研究高温后再生卵石混凝土的抗压性能,完成了24个不同再生骨料取代率试件经不同高温后的单轴加载试验。研究结果表明:随着温度的不断升高,试件颜色逐渐向银灰色转变,表面逐渐出现裂缝、掉皮等现象;试件的峰值应力、峰值应变、弹性模量随着取代率的变化分别在10%、5%、15%的范围内波动;峰值应力及弹性模量随着温度的上升而逐渐下降,峰值应变随着温度的上升而逐渐上升;基于试验数据,拟合出了相关计算式,可为相关研究提供参考。To study the mechanical performance of recycled pebble concrete subjected to high temperature ,24 cylindrical specimens under uniaxial loading condition with different recycled aggregate replacement ratio after different high temperature were completed.The results showed that with the increase of temperature,the color of specimens gradually turned to gray and the surface gradually appear cracks, peeling and other phenomena.The peak stress,peak strain and elastic modulus changed with the replacement ratio fluctuated in the range of 10%、5%and 15%.With the increase of temperature,the peak stress and elastic modulus gradually decreased and the peak strain gradually in-creased.Based on experimental data ,related calculation formulas are given,it can provide reference for related research.

关 键 词：再生卵石混凝土 抗压性能 试验研究 高温 

分 类 号：TU528.041[建筑科学—建筑技术科学]