水利学报Issue(6)：732-738,7.DOI:10.13243/j.cnki.slxb.20141422
全级配混凝土冻融循环后单轴动态抗压性能试验研究
Experimental study on properties of fully-graded concrete under uniaxial dynamic compressive stress state after freezing-thawing cycles
摘要
Abstract
In order to study the impacts of freezing-thawing and dynamic effect on the properties of ful⁃ly-graded concrete under uniaxial compressive stress state, fully-graded concrete are subjected to different cycles(0, 25, 50, 75 and 100)of freezing-thawing tests and uniaxial dynamic compressive tests under dif⁃ferent strain rates(10-5/s, 10-4/s, 10-3/s, 10-2/s). The quality loss, damage morphology of fully-graded con⁃crete after different freezing-thawing cycles and the uniaxial dynamic ultimate compressive strength and stress-strain curve of fully-graded concrete under different strain rates were measured. The results show that fully-graded concrete mass loss has a quadratic curve relationship with freezing-thawing cycles. Under the same strain rate, the uniaxial dynamic ultimate compressive strength of fully-graded concrete decreased with the increase of freezing-thawing cycles. Under the same freezing-thawing cycles, the uniaxial dynamic ultimate compressive strength of fully-graded concrete increased with the increase of strain rate. On the ba⁃sis of analyzing the test results, the unified failure criteria of fully-graded concrete considering freez⁃ing-thawing cycles and strain rate effect has been established. The results may serve as a test and theory reference for the design and maintenance of hydraulic structures.关键词
全级配混凝土/冻融循环/动态性能/抗压强度/破坏准则Key words
fully-graded concrete/freezing-thawing cycles/dynamic performance/the compressive strength/failure criterion分类
建筑与水利引用本文复制引用
王海涛,范文晓,刘天云,安志强..全级配混凝土冻融循环后单轴动态抗压性能试验研究[J].水利学报,2015,(6):732-738,7.基金项目
水沙科学与水利水电工程国家重点实验室开放研究基金资助课题 （）
