PVA纤维水泥基复合材料单轴受压试验研究  

PVA fiber cement matrix composites research uniaxial compression tests

作　　者：姜海军[1,2] 刘曙光[1] 闫长旺[1] 张菊[1] 

机构地区：[1]内蒙古工业大学矿业学院,内蒙古呼和浩特010051 [2]中国矿业大学矿业工程学院,江苏徐州221116

出　　处：《混凝土》2014年第6期81-83,111,共4页Concrete

基　　金：国家自然科学基金项目(50968011;51168033;51368041);内蒙古自然科学基金项目(2012MS0706;2013MS0709);内蒙古自治区高等学校科学研究项目(NJZY12058;NJZY13104);内蒙古工业大学科学研究项目(ZS201137)

摘　　要：聚乙烯醇纤维增强水泥基复合材料(Polyvinylalcoholfiber reinforced cementitious composites简称PVA-FRCCs)是一种高性能纤维增强水泥基复合材料。采用棱柱体试件(150 mm×150 mm×550 mm)研究其单轴受压力学性能。单轴受压试验直接获得了棱柱体试件的应力-应变全曲线,从而获得峰值应力、峰值应变、弹性模量,并系统分析了纤维体积掺量对上述参数的影响。通过对试验数据和已存模型比较获得一个能够描述其应力-应变曲线的非线性本构模型。Polyvinyl alcohol fiber reinforced cementitious composites（PVA-FRCCs） is a kind of high performance fiber-reinforced ce-mentitious composites.We have investigated the uniaxial compression properties of PVA-FRCCs with prismatic specimen size（150 mm× 150 mm×550 mm）.The stress-strain curves were directly obtained,and the compressive parameters,i.e.,peak stress,average strain at peak stress,elastic modulus,were calculated,on which the effects of fiber volume fraction were investigated.We have obtained the nonlinear constitutive models to describe its stress-strain curves with comparison between experimental results and existing models.The proposed constitutive models do compare well for PVA-FRCCs.

关 键 词：聚乙烯醇纤维 水泥基复合材料 单轴受压 应力-应变曲线 

分 类 号：TU528.041[建筑科学—建筑技术科学]