ECC抗压强度及其尺寸效应的试验研究

TEST AND STUDY OF ECC COMPRESSIVE STRENGTH AND DIMENSIONAL EFFECT

采用不同尺寸和形状的试件进行了ECC立方抗压强度和轴心抗压强度的试验,研究ECC和水泥砂浆基体的抗压强度尺寸效应及轴心抗压强度和立方抗压强度的关系,结果表明体积分数为2%的ECC抗压强度低于水泥砂浆基体,且ECC的抗压强度存在尺寸效应,ECC及水泥基材受压破坏的环箍效应小于混凝土,ECC的棱柱与立方体的抗压强度比高于混凝土的抗压强度比。

Samples with different sizes and shapes were used to test the ECC cube compressive strength and axial compressive strength and to study the relation of compressive strength dimensional effect with axial compressive strength and cube compressive strength of ECC and cement slurry. It was found that the compressive strength of ECC with 2% volume fraction is lower than cement slurry matrix, and that compressive strength of ECC has dimensional effect, and that hoop effect of ECC and cement matrix material under compression failure, and that prism-cube compressive strength ratio of ECC is higher than concrete.