Influences of Latez on Tensile Behavior of PVA Fiber-reinforced Cementitious Composites
The tensile properties of latex-modified cementitious composites reinforced by PVA fiber are reported in this paper. Direct tensile tests were performed to investigate the effect of latex on tensile strength (σ), strain (ε) and fracture energy of the composites. The results indicate that latex incorporation diminishes the tensile strength with a maximal strain of 0.57％ but contributes to the enhancement of fracture energy. Under standard curing conditions (RH>90％, 20℃±1℃), a and e of specimens after 14days curing reach half value of 28days curing ones. Multiple-cracking was observed when the ratio of solid polymer to cement (P/C) is about 0.1. PVA fibers were pulled out more easily at the presence of polymer film formed by latex, which can be the third way to adjust the interfacial bonding between PVA fiber and matrix.
ECC latez interface fracture energy PVA fiber
Yubin Shen Shiyun Zhong
School of Material Science and Engineering, Tongji University Shanghai 200092, China Key Laboratory of Advanced Civil Engineering Materials (Tongji University), Ministry of Education Sh
国际会议
6th Asian Symposium on Polymers in Concrete(第六届亚洲聚合物混凝土国际会议)
上海
英文
118-125
2009-10-29（万方平台首次上网日期，不代表论文的发表时间）