湖南大学学报（自然科学版）2016，Vol.43Issue(9)：43-50,8.
反复荷载下碳化混凝土力学性能及本构关系研究
Study on Carbonated Concrete Mechanical Property and Constitutive Relation under Cyclic Load
摘要
Abstract
For better understanding of the mechanical property and constitutive relation of carbonated concrete under cyclic load,cyclic load and monotonic load tests were carried out on prism specimens.Con-sidering the effect of section sizes on carbonated concrete member,the hysteresis loop and skeleton curve of the specimens were obtained, and the effects of carbonization on specimen failure mode, concrete strength,elasticity modulus,peak strain,and ultimate strain were analyzed from carbonation rate perspec-tive.It's revealed that,because of the accumulated internal damage under cyclic load,the stress-strain curve of carbonated concrete decreased significantly,and the ductility was less than that under monotonic load.Furthermore,the peak strain of carbonated concrete decreased a little,peak stress increased,and ul-timate strain decreased with the increase of carbonization depth.Based on the test results,under the con-sideration of carbonation rate and the introduction of the parameters at stress-strain curve descending branch,the stress-strain constitutive relation of carbonated concrete under cyclic load was established, which agreed well with the experimental values.关键词
混凝土/碳化率/反复荷载/本构关系/力学性能Key words
concrete/carbonization rate/cyclic load/constitutive relation/mechanical property分类
建筑与水利引用本文复制引用
梁岩,罗小勇,史艳..反复荷载下碳化混凝土力学性能及本构关系研究[J].湖南大学学报（自然科学版）,2016,43(9):43-50,8.基金项目
国家自然科学基金资助项目（51608488），National Natural Science Foundation of China（51608488）；河南省等高学校重点科研项目 （）
