Aggregate Shape Effect on Multicomponent Ionic Electromigration in Concrete
This paper presents a numerical study on the mechanism of chloride migration in concrete. Unlike most of existing work, this study utilises multicomponent ionic transport models to reflect the influence of ionic interactions by coupling both mass conservation and Poisson’s equations. A series of 2-D, 3-phase models with different shapes and volume fractions of aggregates are developed to simulate the chloride migration test. Through a comparatively overall numerical exploration that considers external voltage, ionic interactions, heterogeneous nature, ITZ, and ionic binding, some important features about multispecies coupling and aggregate shape effect, which have not been properly reported from existing concrete models, are highlighted.
Qing-feng Liu Jian Yang Long-yuan Li Jian Yang
State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, P.R.China School of Marine Science and Engineering, University of Plymouth, PL4 8AA, UK School of Civil Engineering, University of Birmingham, B15 2TT, UK
国际会议
The 5th International Conference on the Durability of Concrete Structures(第五届混凝土结构耐久性国际学术会议)
深圳
英文
42-50
2016-07-01（万方平台首次上网日期，不代表论文的发表时间）