Finite element modelling of chloride removal from concrete by an electrochemical method

被引：98
作者：
Li, LY [1 ]
Page, CL
机构：
[1] Aston Univ, Sch Engn & Appl Sci, Dept Civil Engn, Birmingham B4 7ET, W Midlands, England
[2] Univ Leeds, Dept Civil Engn, Leeds LS2 9JT, W Yorkshire, England
来源：
CORROSION SCIENCE | 2000年 / 42卷 / 12期
关键词：
concrete; chloride; electrochemical process; finite element; migration; diffusion;
D O I：
10.1016/S0010-938X(00)00044-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper presents a finite element model for simulating the transport behaviour of ions in a porous medium when a constant DC current density is applied through electrode pairs emplaced in the medium. The model is then applied to predict the mass transport associated with electrochemical chloride extraction from hydrated cement paste. Numerical results are compared with those obtained in experiments of various duration. Effects of externally applied current density, treatment period, diffusion coefficients, ionic binding, boundary conditions and medium porosity on the efficiency of chloride extraction are discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：2145 / 2165
页数：21
相关论文
共 32 条
[1]   MATHEMATICAL-MODELING OF ELECTROCHEMICAL CHLORIDE EXTRACTION FROM CONCRETE [J].
ANDRADE, C ;
DIEZ, JM ;
ALAMAN, A ;
ALONSO, C .
CEMENT AND CONCRETE RESEARCH, 1995, 25 (04) :727-740
[2]  
Bertolini L., 1995, THESIS POLITECNICO M
[3]  
BERTOLINI L, 1993, EFFECTS ELECTROCHEMI
[4]  
Bertolini L., 1996, ADV CEM RES, V8, P93
[5]   PB(II) REMOVAL FROM KAOLINITE BY ELECTROKINETICS [J].
HAMED, J ;
ACAR, YB ;
GALE, RJ .
JOURNAL OF GEOTECHNICAL ENGINEERING-ASCE, 1991, 117 (02) :241-271
[6]   Chloride removal by intermittent cathodic protection applied to reinforced concrete in the tidal zone [J].
Hassanein, AM ;
Glass, GK ;
Buenfeld, NR .
CORROSION, 1999, 55 (09) :840-850
[7]   A mathematical model for electrochemical removal of chloride from concrete structures [J].
Hassanein, AM ;
Glass, GK ;
Buenfeld, NR .
CORROSION, 1998, 54 (04) :323-332
[8]   ELECTRORESTORATION OF METAL-CONTAMINATED SOILS [J].
HICKS, RE ;
TONDORF, S .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1994, 28 (12) :2203-2210
[9]   ELECTRORECLAMATION [J].
LAGEMAN, R .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1993, 27 (13) :2648-2650
[10]  
LANKARD DR, 1975, FHWARD7660
1234