混杂纤维水泥基复合材料的声发射特性研究

摘要

采用普通硅酸盐水泥、硅灰、粉煤灰、外加剂、微镀铜钢纤维以及PVA纤维进行水泥基复合材料配比试验，设计和制造了尺寸为150mm×l50mm×300mm的棱柱体轴心抗压试件，通过实验和分析得到了三种不同应力条件下的声发射特征参数。%TA series of proportioning tests of cement-based composites with ordinary portland cement, silica fume, fly ash, admixture, micro copper coated steel fiber and also PVA fiber are carried out, and hexagonal prism specimens with dimensions of 150mm×l50mm×300mm for axial compression are designed and manufactured. Characteristic parame-ters responding to acoustic emission under three different stress conditions are obtained through experimental and analyti-cal results.