硅酸盐通报2017，Vol.36Issue(4)：1130-1135,6.
非饱和混凝土氯离子传输模型及参数分析
Chloride Transport Model and Parameter Analysis of Unsaturated Concrete
摘要
Abstract
Most of the concrete structure in entity engineering is always in the unsaturated state with alternating wet and dry seasons.It is of great importance to do the research chloride salt erosion in unsaturated concrete for concrete durability.According to the chloride ion transmission mechanism,the chloride convection-diffusion control equation in unsaturated concrete was derived by considering the difference of moisture transmission the dry-wet alternate process.Crank-Nicolson method was engaged to develop the finite difference format of equation above.The results of proving experiment reveal that the results of model calculation have a good correlation with the measured results.The parameter sensitivity analysis result shows:chloride ion concentration increases decreases with the increase of dry and wet ratio surface and pore saturation.The chloride ion concentration gets its highest with the concrete initial saturation is 0.3.关键词
非饱和混凝土/氯离子/扩散/对流/对流区深度Key words
unsaturated concrete/chloride/diffusion/convection/convection zone depth分类
交通工程引用本文复制引用
於德美,关博文,申爱琴,陈华鑫..非饱和混凝土氯离子传输模型及参数分析[J].硅酸盐通报,2017,36(4):1130-1135,6.基金项目
国家自然科学基金面上项目(51278059) （51278059）
国家自然科学基金青年基金(51308062) （51308062）
