橡胶改性混凝土的抗压强度试验及破坏机理研究

Study on Compressive Strength Test and Failure Mechanism of Rubber Modified Concrete

采用YES-3000数显式压力试验机对1组基准混凝土试件、12组橡胶掺量分别为5%、10%、15%、20%橡胶粒径分别为80目、15目、2mm的混凝土试件以及4组体积率为0.5%的橡胶混凝土试件进行了静载抗压强度试验,得到了每一组试件的破坏形态并计算出各组试件的静载抗压强度。试验结果表明:随着橡胶掺量的增加,试件的立方体抗压强度呈减小趋势,其强度降低系数逐渐增大,并且通过对数据的处理得到了橡胶混凝土强度降低系数同橡胶掺量之间的关系。

1set of concrete specimen,12 sets of concrete specimens that the rubber content is 5%,10%,15% and 20%respectively and rubber particle size is 80 mesh,15orders,2mm respectively,and 4sets of rubber concrete specimens that steel fiber content is at a rate of 0.5% volume were in static load compressive strength test by the YES-3000 digital display type pressure testing machine,the failure pattern were obtained and the static compressive strength test pieces were calculated.The test results show that：with the increase of rubber content,compressive strength test piece was decreased,the strength reduce factor increases in contrast,the relationship between strength reduce factor and rubber content is obtained by data processing.