摘要
研究了分散剂的种类(HPMC、MC、HEC)和掺量(0、0.2%、0.4%)对碳纤维水泥砂浆(CFRM)力学性能和压敏性的影响。结果表明:当分散剂掺量为0.2%时,掺HPMC和MC的CFRM试件抗压、抗折强度均高于基准组,其中,HPMC对力学性能的提升效果最好;各组试件的电阻变化率均随着应力的增大而减小,其中,HPMC掺量为0.2%的试件灵敏度最高。综合考虑,采用0.2%的HPMC时,CFRM的力学性能和压敏性达到最佳。
The effects of the types(HPMC,MC,HEC)and content(0,0.2%,0.4%)of dispersants on the mechanical properties and pressure sensitivity of carbon fiber cement mortar(CFRM)were studied.The results show that when the content of dispersant is 0.2%,the compressive and flexural strength of CFRM mixed with HPMC and MC are higher than those of the reference group,and HPMC has the best effect on improving the mechanical properties of CFRM.The resistance change rate of the specimens decreases with the increase of stress,and the sensitivity of the specimens with HPMC content of 0.2%is the highest.Considering comprehensively,when 0.2%HPMC is used,the mechanical properties and pressure sensitivity of CFRM are the best.
作者
金春福
阎石
张世洋
JIN Chun-fu;YAN Shi;ZHANG Shi-yang(Liaoning Provincial College of Communications,Shenyang 110122,China;Shenyang Jianzhu University,Shenyang 110168,China;Fakuwancheng Real Estate Co.,Ltd.,Shenyang 110400,China)
出处
《混凝土与水泥制品》
2022年第3期66-70,共5页
China Concrete and Cement Products
基金
辽宁省交通厅计划项目(202012)
辽宁省交通高等专科学校应用型科研项目(lnccjyky202116)
辽宁省教育厅服务地方计划项目(L2019638)。
关键词
碳纤维
水泥砂浆
分散剂
力学性能
压敏性
灵敏度
Carbon fiber
Cement mortar
Dispersant
Mechanical property
Pressure sensitivity
Sensitivity
