A COMSOL-PHREEQC interface for modeling the multi-species transport of saturated cement-based materials

被引：37
作者：
Guo, Bingbing [1 ,2 ,3 ]
Hong, Yi [4 ]
Qiao, Guofu [1 ,2 ,3 ]
Ou, Jinping [1 ,2 ,3 ]
机构：
[1] Harbin Inst Technol, Key Lab Smart Prevent & Mitigat Civil Engn Disast, Minist Ind & Informat Technol, Harbin 150090, Heilongjiang, Peoples R China
[2] Harbin Inst Technol, Sch Civil Engn, Harbin 150090, Heilongjiang, Peoples R China
[3] Harbin Inst Technol, Key Lab Struct Dynam Behav & Control, Minist Educ, Harbin 150090, Heilongjiang, Peoples R China
[4] Harbin Inst Technol, Ctr Composite Mat & Struct, Harbin 150090, Heilongjiang, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 187卷
关键词：
Cement-based materials; Durability; Multi-species transport; Numerical simulation; Chloride; Physical and chemical interactions; IONIC TRANSPORT; CHLORIDE PENETRATION; PORTLAND-CEMENT; REACTIVE-TRANSPORT; HYDRATED CEMENT; CONCRETE; DIFFUSION; BINDING; STEEL; DEGRADATION;
D O I：
10.1016/j.conbuildmat.2018.07.242
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A COMSOL-PHREEQC interface based on MATLAB language is developed to simulate a multi-dimensional and multi-species ionic transport for cement-based materials. This interface couples the physical and chemical interactions between pore solution and cement hydrates (PHREEQC) into the Nernst-Planck equations (COMSOL) using a sequential non-iterative approach (SNIA). Based on the thermodynamic insight, the phase-equilibrium model and the surface complexation model are used to express the physical and chemical interactions. In addition, the influence of the variation of the porosity on the ionic transport is considered. Moreover, two reported experiments are taken as an example to illustrate the application of the interface and to verify its accuracy. The results indicate that the developed interface can accurately predict the transport of chloride in cement-based materials. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：839 / 853
页数：15
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