Fracture and Tensile Properties of Polyvinyl Alcohol Fiber Reinforced Cementitous Composites

查看全文 作　　者：[1]徐世烺;GAO [2]Shuling

机构地区：[1]Institute of Civil and Hydraulic, Dalian University of Technology, Dalian 116023, China;[2]Institute of Civil Engineering, Hebei University of Technology, Tianjin 300401, China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》索引2008年第23卷第1期,共5页

基　　金：Committee on Science and Technology Foundation of China(No.50438010);The Research of Formation Progress and Control Technology of Concrete Structure Cracks 摘　　要：Experiments were carried out to design polyvinyl alcohol(PVA)fiber reinforced cementitous composites(PVA-FRCCs)holding high ductility and energy consumption ability.Besides,the properties of each ingredients in composites,mixing method and technology for fresh mixture were described in detail. Then,the pseudo-strain-hardening(PSH)behavior was investigated in uniaxial tension test.As a result,the maximum ultimate tensile strain can reach 0.7 percent.On the other hand,the single edge notch(SEN)thin sheet specimens were employed to gain the normal tensile load via crack mouth opening displacement(CMOD) curves,which can show obvious PSH behavior.In addition,the curves can be divided into four zones whose fracture toughness calculation methods were discussed.The wedge splitting(WS)test method can be applied to discuss the fracture toughness.Moreover,fracture energy of SEN and WS specimens were both approximately evaluated. 关键词：聚乙烯醇光纤增强粘性复合物硬化破碎特征拉伸特征

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Fracture and Tensile Properties of Polyvinyl Alcohol Fiber Reinforced Cementitous Composites

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