【摘 要】
：
Experiments were carried out to design polyvinyl alcohol(PVA)fiber reinforced cementitous composites(PVA-FRCCs)holding high ductility and energy consumption abi
【机 构】
：
Institutc of Civil and Hydraulic,Institute of Civil Engineering
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
【基金项目】
：
Committee on Science and Technology Foundation of China;The Research of Formation Progress and Control Technology of Concrete Structure Cracks
论文部分内容阅读
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,them 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.
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