长沙理工大学学报（自然科学版）2016，Vol.13Issue(2)：48-53,6.
冻融损伤混凝土的应力应变关系
The stress-strain relationship of freeze-thaw damage of concrete
摘要
Abstract
To study the mechanical properties of freeze-thaw damage of concrete in cold re-gion,108 normal concrete blocks are taken to do the freeze-thaw damage experiment which intended to explore,under different times of freeze-thaw damage experiment,the speci-men's surface damage characteristics,the mass loss rate and the variation characteristics of saturated moisture content.Through the concrete compression experiment,it is concluded the failure characteristics and stress and strain values under different degrees of freezing-thawing.Experimental results showed that when the freezing and thawing increased,the mass loss rate of specimen decreased first,then increased,and at 45 times the mass loss rate of specimen was to the minimum;the variation characteristics of saturated water ab-sorption decreased first and then increased which was to the minimum at 50th freeze-thaw test.It is also revealed the stress-strain relation of concrete in different numbers of freeze-thaw cycles and the single axial compression,and proposed the corresponding calculation model of Stress-Strain Relation.关键词
混凝土/冻胀损伤/多因素作用/退化规律/应力应变关系Key words
concrete/freeze-thaw damage/multi-factor effects/degradation law/stress-strain relation分类
建筑与水利引用本文复制引用
王磊,张湘黔..冻融损伤混凝土的应力应变关系[J].长沙理工大学学报（自然科学版）,2016,13(2):48-53,6.基金项目
湖南省交通科技项目(201328 （）
201434) （）
