摘要
在水泥基复合材料中掺入适量纤维可显著改善其物理力学性能,但有机-无机混杂纤维对水泥材料性能的影响目前研究不多。进行了单掺PVA纤维、单掺玄武岩纤维以及复掺两种纤维的水泥基复合材料力学性能实验。结果表明,单掺1.6%(体积分数)的短PVA纤维时,水泥基复合材料的抗折强度降低7%、抗压强度提升31%、折压比降低24%;单掺0.3%(体积分数)的短玄武岩纤维时,水泥基复合材料的抗折强度降低8%、抗压强度提升15.7%、折压比降低20%;掺0.3%(体积分数)短玄武岩纤维和0.5%(体积分数)短PVA纤维时,水泥基复合材料的抗折强度几乎无影响,抗压强度显著提升,折压比相对减少,其综合性能最优。
The physical and mechanical properties of cement-based materials can be improved by adding fiber.However,the influence of organic-inorganic hybrid fibers on the properties of cement materials is seldom studied.In this paper,mechanical properties of cement-based materials with single PVA fiber,single basalt fiber and two kinds of fiber were tested.The results showed that when only 1.6%short PVA fiber was added,the mechanical properties of cement-based materials were improved the best.The flexural strength of cement-based materials decreased by 7%,the compressive strength increased by 31%and the flexural ratio decreased by 24%.With only 0.3%basalt fiber staple,cement-based materials showed the best improvement in mechanical properties,with the flexural strength reduced by 8%,the compressive strength increased by 15.7%and the flexural strength decreased by 20%.When adding 0.3%short basalt fiber and 0.5%short PVA fiber,the flexural strength of cement-based composites had little effect,but the compressive strength was significantly improved,and the flexural compression ratio was relatively reduced,which showed the best comprehensive performance.
作者
王仕富
曾晓辉
周尧
王平
马建宁
周昊
李建辉
潘国园
WANG Shifu;ZENG Xiaohui;ZHOU Yao;WANG Ping;MA Jianning;ZHOU Hao;LI Jianhui;PAN Guoyuan(China Railway Nanning Group Co., Ltd., Nanning 530029,China;School of Civil Engineering, Southwest Jiaotong University, Chengdu 6100314, China;School of Civil Engineering, Central South University, Changsha 410074, China;Sichuan Haolong New Material Technology of High Tech Rail Co., Ltd., Chengdu 610000, China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2020年第4期4072-4076,共5页
Journal of Functional Materials
基金
中国铁路总公司科技研究开发计划重点课题资助项目(2017G002-G)。
