配筋PVA-FRCC抗压试验研究与理论模型  

Experimental research and theoretical model on compression test of steel reinforced PVA-FRCC

作　　者：孙伟[1] 刘曙光[1,2] 闫长旺 尹立强[3] 闫越 SUN Wei;LIU Shuguang;YAN Changwang;YIN Liqiang;YAN Yue(School of Civil Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;School of Mining and Technology,Inner Mongolia University of Technology,Hohhot 010051,China;School of Materials Science and Engineering,Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学土木工程学院,内蒙古呼和浩特010051 [2]内蒙古工业大学矿业学院,内蒙古呼和浩特010051 [3]内蒙古工业大学材料科学与工程学院,内蒙古呼和浩特010051

出　　处：《混凝土》2018年第8期27-30,34,共5页Concrete

基　　金：国家自然科学基金(51368041);内蒙古自然科学基金(2017MS0505);内蒙古自治区高等学校科学研究项目(NJZY093);内蒙古自治区博士研究生科研创新项目(B20161012809)

摘　　要：为研究配筋PVA纤维水泥基复合材料(简称PVA-FRCC)的单轴抗压性能,以配筋PVA-FRCC、无配筋PVA-FRCC和掺纤维的钢筋混凝土棱柱体试件为试验对象,对比研究了3类材料的应力-应变全曲线,分析了纤维掺量与配筋对峰值应力的影响,依据试验数据做出的配筋PVA-FRCC应力-应变全曲线,给出了一种新的单轴抗压理论模型。得出结论:相比无配筋PVA-FRCC与掺纤维的钢筋混凝土,配筋PVA-FRCC试件具有更好的延性、韧性、弹性变形性能以及更加明显的应变硬化阶段。PVA纤维掺量越大,配筋PVA-FRCC试件的峰值应力越小。提出的模型可为今后的相关研究提供一定理论参考。In order to research the compression performance of steel reinforced PVA fiber reinforced cementitious composites(PVA-FRCC),prism specimens of steel reinforced PVA-FRCC,PVA-FRCC with no steel and reinforced concrete with fiber are tested.The stress-strain curves of three kinds of materials are studied and the effect of fiber content and reinforcement on the peak stress are analyzed.A new theoretical model of uniaxial compression is proposed based on the stress-strain curves of steel reinforced PVA-FRCC making by the experimental data.Results show that compared with PVA-FRCC with no steel and reinforced concrete with fiber,steel reinforced PVA-FRCC has better ductility,toughness,elastic deformation and more obvious strain hardening stage.The larger the amount of PVA fiber,the smaller the peak stress of reinforced PVA-FRCC specimens.The proposed model can provide certain theoretical reference in the future research.

关 键 词：水泥基复合材料 聚乙烯醇纤维 配筋 应力-应变全曲线 理论模型 

分 类 号：TU528.572[建筑科学—建筑技术科学]