Through the uniaxial compression experiment of cylinder poly vinyl alcohol fiber reinforced cemen- titious composite (PVA-FRCC) specimens, their mechanical performance are systematically studied. The damage pattern, peak stress, limit strain and the elastic modulus and poissoug ratio, the stress-strain curve of the specimens are analyzed. It is found that, compared with ordinary concrete, the poly vinyl alcohol fiber re- inforced cementitious composite have some advantages of larger limit strain, ductility, peak stress, deformation ability and significantly increasing the toughness. But the elastic modulus and poisson's ratio are unchanged basically. The influence of fiber contents, water-binder ratio, sand/cement ratio to the mechanical parameters are also discussed, by changing the ratios of the poly vinyl alcohol fiber reinforced cementitious composite, water cement, sand and fiber ratio.%通过圆柱体聚乙烯醇纤维增强水泥基复合材料（PVA—FRCC）试件单轴受压试验，对其力学性能进行系统研究．分析其破坏形态、峰值应力、极限应变、弹性模量、泊松比、应力一应变曲线．通过试验发现聚乙烯醇纤维增强水泥基复合材料与普通混凝土相比，具备极限应变大、延性好、峰值应力、变形能力及韧性明显增加、弹性模量、泊松比基本不变等优点．通过改变聚乙烯醇纤维增强水泥基复合材料中水、水泥、砂、纤维的配比进而讨论纤维掺量、水胶比、砂胶比对其力学参数的影响．
展开▼
