Damage and deterioration model of concrete based on COMSOL in sulfate environment

doi:10.13245/j.hust.210321

IR > 土木工程学院

	Damage and deterioration model of concrete based on COMSOL in sulfate environment
	Qiao HX(乔宏霞)1,2 ; Qiao GB(乔国斌)1; Lu CG(路承功)1
	2021-03-23
发表期刊	Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition)
ISSN	1671-4512
卷号	49 期号:3 页码:119-125
摘要	Through the combination of Fick's second law and modified Davis equation, the numerical simulation process of ion diffusion of concrete in the pure immersion environment of sulfate ions under multi-ion coupling was established, and the relationship between ions and corrosion products was established through chemical equilibrium, which was finally simplified model of pure sulphate immersion. Matlab and COMSOL Multiphysics were used to establish the model of sulfate ion diffusion. Taking time as the independent variable, by setting the initial conditions such as temperature and concentration, the final evaluation parameters of the dependent variable such as corrosion product concentration, porosity and strain field were obtained. Considering the initial modeling conditions of concrete specimens and the complex factors in the process of sulfate ion corrosion, some simplifications and assumptions were made for the diffusion and corrosion process. The modeling results show that as the simulated corrosion progresses, the free sulfate ions inside the concrete tend to stabilize, while the cured sulfate ions increase with the corrosion. The simulation results can be combined with the non-destructive detection method to use the thickness of the damaged layer to predict the durability of the concrete. © 2021, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.
关键词	Concretes Deterioration Diffusion Environmental regulations Ions MATLAB Sulfur compounds Chemical equilibriums Comsol multiphysics Dependent variables Deterioration modeling Evaluation parameters Independent variables Initial conditions Nondestructive detection
DOI	10.13245/j.hust.210321
收录类别	EI
语种	中文
出版者	Huazhong University of Science and Technology
EI入藏号	20211710250650
EI主题词	Corrosion
EI分类号	412 Concrete ; 454.2 Environmental Impact and Protection ; 921 Mathematics ; 951 Materials Science
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/148454
专题	土木工程学院
作者单位	1.兰州理工大学土木工程学院; 2.兰州理工大学西部土木工程防灾减灾教育部工程研究中心
第一作者单位	土木工程学院; 甘肃省土木工程防灾减灾重点实验室
第一作者的第一单位	土木工程学院
推荐引用方式 GB/T 7714	Qiao HX,Qiao GB,Lu CG. Damage and deterioration model of concrete based on COMSOL in sulfate environment[J]. Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition),2021,49(3):119-125.
APA	乔宏霞,乔国斌,&路承功.(2021).Damage and deterioration model of concrete based on COMSOL in sulfate environment.Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition),49(3),119-125.
MLA	乔宏霞,et al."Damage and deterioration model of concrete based on COMSOL in sulfate environment".Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) 49.3(2021):119-125.