再生混凝土抗折强度试验研究  

Experimental study on the flexural strength of recycled aggregate concrete

作　　者：陈宗平[1,2] 余兴国[2] 柯晓军[2] 薛建阳[3] 

机构地区：[1]福州大学土木工程博士后流动站,福建福州350108 [2]广西大学土木建筑工程学院,广西南宁530004 [3]西安建筑科技大学土木工程学院,陕西西安710055

出　　处：《混凝土》2010年第6期58-60,120,共4页Concrete

基　　金：国家自然科学基金(50908057);广西科学基金项目(桂科青0832004)

摘　　要：为了研究不同骨料替代率再生混凝土的抗折强度,设计了33个不同再生粗骨料替代率(0、10%、20%、30%、40%、50%、60%、70%、80%、90%、100%)标准试块进行抗折试验,获取了不同骨料替代率再生混凝土的抗折强度,分析了骨料替代率对抗折强度的影响,并对折断后的试块进行抗压试验,获取了同一试块的抗压强度。试验结果表明:再生粗骨料混凝土的抗折强度和抗压强度与天然骨料混凝土接近,再生混凝土的抗折强度与立方体抗压强度之比值为0.12。In order to study the flexural strength of different relacemnet percentages recycled coarse aggregate concrete.33 specimens were designed for the test,which relacemnet percentages recycled coarse aggregate are 0,10%,20%,30%,40%,50%,60%,70%,80%,90%,100%.According to the experiment,the flexural strength of recycled aggregate concrete（RAC）are obtained,and the influence of relacemnet percentages recycled coarse aggregate are analyzed.Using the same specimens to compress test,which is finished by the flexural strength test,the cubic compressive strength are obtained.The results show that the flexural strength and cubic compressive strength are near between the recycled aggregate concrete and normal concrete,the recycled aggregate concrete ratio of flexural strength to cubic compressive strength is 0.12.

关 键 词：再生混凝土 再生粗骨料 替代率 抗折强度 

分 类 号：TU528.01[建筑科学—建筑技术科学]