沙漠砂超高韧性水泥基复合材料抗冲击荷载试验研究  

Experimental study on impact load resistance of desert sand engineered cementitious composites

作　　者：宋浩博 韩风霞[1] 郭鑫 陈宇轩 苏超 张雨龙 迪娜·包拉提 SONG Haobo;HAN Fengxia;GUO Xin;CHEN Yuxuan;SU Chao;ZHANG Yulong;DINA·Baolati(College of Architectural Engineering,Xinjiang University,Urumqi 830017,China)

机构地区：[1]新疆大学建筑工程学院,新疆乌鲁木齐830017

出　　处：《混凝土》2023年第9期97-100,共4页Concrete

基　　金：国家级大学生创新创业训练计划项目(202010755082);国家自然科学基金青年基金(51708479)。

摘　　要：为研究不同取代率沙漠砂(20%、30%、40%)和聚乙烯纤维掺量(1.0%、1.5%、2.0%)等影响因素对超高韧性水泥基复合材料抗冲击性能的影响,采用落锤冲击试验装置对沙漠砂聚乙烯纤维超高韧性水泥基复合材料试件的抗冲击性能进行了试验研究,并对其冲击耗能和延性系数等指标进行了分析。结果表明:加入一定的沙漠砂和纤维之后,超高韧性水泥基复合材料的抗冲击性能有一定的提升,延性性能得到改善,当沙漠砂取代率为30%,纤维掺量为1.5%时,超高韧性水泥基复合材料的抗冲击性能最好。Taking desert sand with different substitution rate(20%,30%,40%)and polyethylene fiber content(1.0%,1.5%,2.0%)as independent variables,the effect of independent variables on the impact resistance of engineered cementitious composites was studied.In this paper,the drop hammer impact test device was used to study the impact resistance of desert sand polyethylene fiber engineered cementitious composites,and the impact energy consumption and ductility coefficient were analyzed.The results show thatthe impact resistance and ductility of ultra-high toughness cement-based composites are improved to a certain extent after adding a certain amount of desert sand and fiber.The impact resistance of engineered cementitious composites is the best by the substitution rate of desert sand with 30%and the content of fiber with 1.5%.

关 键 词：沙漠砂 聚乙烯纤维 超高韧性水泥基复合材料 冲击性能 冲击试验 

分 类 号：TU528.041[建筑科学—建筑技术科学]