塑钢纤维对高性能喷射混凝土的性能优化研究  

Study on performance optimization of high performance shotcrete with plastic steel fiber

作　　者：孙明书 蔡莉莉 秦文涛 郭小坤 郭军峰 SUN Mingshu;CAI Lili;QIN Wentao;GUO Xiaokun;GUO Junfeng(Southwest Communications Construction Group Co.,Ltd.,Kunming 650000,China)

机构地区：[1]西南交通建设集团股份有限公司,云南昆明650000

出　　处：《粘接》2022年第3期139-143,共5页Adhesion

摘　　要：为提高隧道支护系统的稳定性,研究在普通喷射混凝土内掺杂塑钢纤维材料,以提高其抗压、抗渗和力学支撑性能。塑钢纤维提升喷射混凝土性能的研究依托复合材料、纤维间距理论,试验结果显示:塑钢纤维混凝土的最大承受荷载为17.2 kN;最大平均渗透高度5.4 cm,为普通喷射混凝土的40.6%;最大渗透系数0.506×10^(-9) cm/s,为普通喷射混凝土的16.5%;塑钢纤维喷射混凝土的抗压性、抗渗性和韧性均优于普通喷射混凝土。In order to improve the stability of the tunnel support system,the paper studies the doping of plastic steel fiber in the ordinary shotcrete to improve its compression,impermeability and mechanical support performance.The theoretical basis of improving the performance of shotcrete with plastic steel fiber is composite material theory and fiber spacing theory.The test results show that the maximum load of the concrete is 17.2 kN.The maximum average penetration height is 5.4 cm,which is 40.6%of ordinary shotcrete,and the maximum permeability coefficient is 0.506×10^(-9) cm/s,which is 16.5%of ordinary shotcrete.The compressive strength,impermeability and toughness of steel fiber reinforced shotcrete are better than those of ordinary shotcrete.

关 键 词：塑钢纤维 喷射混凝土 高性能 性能优化 复合材料 渗透高度 

分 类 号：TU528[建筑科学—建筑技术科学]