PVA-ECC单轴抗压试验及本构关系  

Uniaxial compression test and constitutive relationship of high-toughness polyvinyl alcohol cement-based composites

作　　者：黄可 周旭[1] HUANG Ke;ZHOU Xu(School of Architectural Engineering,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500

出　　处：《四川建筑科学研究》2020年第4期75-81,共7页Sichuan Building Science

基　　金：2019年昆明理工大学分析测试基金(2019M20182210048)。

摘　　要：通过对6组不同配合比立方体试件进行单轴抗压试验,研究了高韧性聚乙烯醇水泥基复合材料(PVA-ECC)的抗压性能和抗压强度尺寸效应,测得了材料的单轴抗压强度和抗压应力应变曲线。试验结果表明,PVA-ECC抗压强度存在明显的尺寸效应,抗压强度随着尺寸边长的增大而减小。根据实测的应力应变曲线,提出了单轴受压本构模型,为PVA-ECC结构非线性有限元分析及结构设计提供了理论依据。Uniaxial compression tests were performed on 6 groups of cube specimens with different mixing ratios to study the compressive properties and compressive strength dimensional effects of high-toughness polyvinyl alcohol cement-based composites(PVA-ECC),the compressive strength and the axial compressive stress-strain curves were obtained.The test results confirm that the PVA-ECC compressive strength has a significant size effect,and the compressive strength decreases with the increase of the size side length.The uniaxial compression constitutive model is provided,which provides a theoretical basis for nonlinear finite element analysis and structural design of PVA-ECC structure.

关 键 词：高韧性聚乙烯醇水泥基复合材(PVA-ECC) 抗压强度 尺寸效应 本构方程 

分 类 号：TU528[建筑科学—建筑技术科学]