Simulation of Chloride Diffusion in Cracked Concrete with Different Crack Patterns
Chloride-induced corrosion of steel rebar is one of the primary durability problems for reinforced concrete structures in marine environment. Furthermore, if the surfaces of concrete structures have cracks, additional chloride can penetrate into concrete through cracked zone. For chloride ingression...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2016-01-01
|
| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2016/1075452 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832567589968019456 |
|---|---|
| author | Xiao-Yong Wang Li-Na Zhang |
| author_facet | Xiao-Yong Wang Li-Na Zhang |
| author_sort | Xiao-Yong Wang |
| collection | DOAJ |
| description | Chloride-induced corrosion of steel rebar is one of the primary durability problems for reinforced concrete structures in marine environment. Furthermore, if the surfaces of concrete structures have cracks, additional chloride can penetrate into concrete through cracked zone. For chloride ingression into cracked concrete, former researches mainly focus on influence of crack width on chloride diffusion coefficients. Other crack characteristics, such as chloride depth, crack shape (equal-width crack or tapered crack), crack density, and spacing, are not studied in detail. To fill this gap, this paper presents a numerical procedure to simulate chloride ingression into cracked concrete with different crack geometry characteristics. Cracked concrete is divided into two parts, sound zone and cracked zone. For stress-free concrete, the diffusion coefficient of sound zone is approximately assumed to be the same as sound concrete, and the diffusion coefficient of cracked zone is expressed as a piecewise function of crack width. Two-dimensional finite element method is used to determine chloride concentration. It is found that, with the increasing of crack width, crack depth, and crack amount, chloride ingression will aggravate. The analysis results generally agree with experimental results. |
| format | Article |
| id | doaj-art-65dbebac7ae54a4fa2bf45f4a29d5332 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-65dbebac7ae54a4fa2bf45f4a29d53322025-02-03T01:01:05ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422016-01-01201610.1155/2016/10754521075452Simulation of Chloride Diffusion in Cracked Concrete with Different Crack PatternsXiao-Yong Wang0Li-Na Zhang1Department of Architectural Engineering, College of Engineering, Kangwon National University, Chuncheon-Si 200-701, Republic of KoreaDepartment of Architectural Engineering, College of Engineering, Kangwon National University, Chuncheon-Si 200-701, Republic of KoreaChloride-induced corrosion of steel rebar is one of the primary durability problems for reinforced concrete structures in marine environment. Furthermore, if the surfaces of concrete structures have cracks, additional chloride can penetrate into concrete through cracked zone. For chloride ingression into cracked concrete, former researches mainly focus on influence of crack width on chloride diffusion coefficients. Other crack characteristics, such as chloride depth, crack shape (equal-width crack or tapered crack), crack density, and spacing, are not studied in detail. To fill this gap, this paper presents a numerical procedure to simulate chloride ingression into cracked concrete with different crack geometry characteristics. Cracked concrete is divided into two parts, sound zone and cracked zone. For stress-free concrete, the diffusion coefficient of sound zone is approximately assumed to be the same as sound concrete, and the diffusion coefficient of cracked zone is expressed as a piecewise function of crack width. Two-dimensional finite element method is used to determine chloride concentration. It is found that, with the increasing of crack width, crack depth, and crack amount, chloride ingression will aggravate. The analysis results generally agree with experimental results.http://dx.doi.org/10.1155/2016/1075452 |
| spellingShingle | Xiao-Yong Wang Li-Na Zhang Simulation of Chloride Diffusion in Cracked Concrete with Different Crack Patterns Advances in Materials Science and Engineering |
| title | Simulation of Chloride Diffusion in Cracked Concrete with Different Crack Patterns |
| title_full | Simulation of Chloride Diffusion in Cracked Concrete with Different Crack Patterns |
| title_fullStr | Simulation of Chloride Diffusion in Cracked Concrete with Different Crack Patterns |
| title_full_unstemmed | Simulation of Chloride Diffusion in Cracked Concrete with Different Crack Patterns |
| title_short | Simulation of Chloride Diffusion in Cracked Concrete with Different Crack Patterns |
| title_sort | simulation of chloride diffusion in cracked concrete with different crack patterns |
| url | http://dx.doi.org/10.1155/2016/1075452 |
| work_keys_str_mv | AT xiaoyongwang simulationofchloridediffusionincrackedconcretewithdifferentcrackpatterns AT linazhang simulationofchloridediffusionincrackedconcretewithdifferentcrackpatterns |