考虑冻融效应的橡胶混凝土氯离子扩散系数  

Diffusion Coefficient of Rubber Concrete Chloride Ions Considering Effect of Freeze-Thaw

作　　者：杨春峰[1] 肖辉 于冬雪 YANG Chunfeng;XIAO Hui;YU Dongxue(School of Architecture and Civil Engineering,Shenyang University,Shenyang 110044,China)

机构地区：[1]沈阳大学建筑工程学院

出　　处：《沈阳大学学报（自然科学版）》2019年第6期509-513,共5页Journal of Shenyang University：Natural Science

基　　金：国家科技支撑计划项目(2013BAJ15B03);辽宁省自然科学基金资助项目(20170540640)

摘　　要：为了研究掺入混凝土的橡胶粒径、掺量对混凝土内氯离子扩散系数的影响,以力学损伤模型为基础推导了橡胶混凝土在冻融循环作用下的氯离子扩散模型.对各组橡胶混凝土电通量试验数值进行分析得出扩散系数,利用1stOpt软件对扩散系数拟合得出数学模型,并验证了模型的可靠性.In order to study the effect of the rubber particle size and doping into concrete on the diffusion coefficient of chlorine ions in concrete,the chlorine ion diffusion model of rubber concrete under the effect of freeze-thaw cycle is derived from the mechanical damage model.The diffusion coefficient is obtained from the value of the electroflux test of each group of rubber concrete.Using 1stOpt software to fit the diffusion coefficient,the mathematical model is obtained and the reliability of the model is verified.

关 键 词：橡胶混凝土 氯离子 冻融循环 扩散模型 扩散系数 

分 类 号：TU528[建筑科学—建筑技术科学]