同济大学学报（自然科学版）2012，Vol.40Issue(6)：900-905,6.DOI:10.3969/j.issn.0253-374x.2012.06.017
细观层面的混凝土碳化过程数值模拟
Numerical Simulation of Concrete Carbonation Process on Meso-scale
摘要
Abstract
In order to study the problem of concrete carbonation on meso-scale. a 3D spherical aggregate generation method based on the cumulative distribution function (CDF) is established. The influence of randomness in this method on the simulation results is analyzed. The principle of how to determine the parameters such as maximum diameters, minimum diameters and volume fraction of aggregate is discussed as well. Based on the previous method, a simplified numerical model of concrete carbonation is further proposed. The influence of aggregates on the concrete carbonation process on macro-scale is analyzed. The results show that the dilute effect and tortuosity effect caused by aggregate can decrease the concrete carbonation depth. Besides, the nonuniform distribution of aggregates in cement paste will result in the inhomogeneity of concrete carbonation depth on macro-scale.关键词
混凝土/细观模型/数值模拟/碳化Key words
concrete/meso-scale model/numerical simulations carbonation分类
交通工程引用本文复制引用
潘子超,阮欣,陈艾荣..细观层面的混凝土碳化过程数值模拟[J].同济大学学报（自然科学版）,2012,40(6):900-905,6.基金项目
国家自然科学基金(50878145) （50878145）
贵州省交通运输厅科技项目(2010-122-018) （2010-122-018）
中央高校基本科研业务费专项资金 （）
