Chloride-induced corrosion modelling of cracked reinforced SHCC
Corrosion of steel bars in concrete is usually a slow electrochemical process which may need a long time before damage becomes visible in the reinforced concrete (RC). However, cracks provide quick access to chloride, oxygen and water into concrete and accelerate the corrosion process. Corrosion mod...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2017
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| Online Access: | https://hdl.handle.net/10356/80325 http://hdl.handle.net/10220/42148 |
| _version_ | 1826120311249043456 |
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| author | Paul, Suvash Chandra van Zijl, Gideon P.A.G. |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Paul, Suvash Chandra van Zijl, Gideon P.A.G. |
| author_sort | Paul, Suvash Chandra |
| collection | NTU |
| description | Corrosion of steel bars in concrete is usually a slow electrochemical process which may need a long time before damage becomes visible in the reinforced concrete (RC). However, cracks provide quick access to chloride, oxygen and water into concrete and accelerate the corrosion process. Corrosion modelling is essential for structural design for a particular life span, or to inform decisions on repair of RC structures to reach or extend their service life. This paper reports experimental research results of accelerated chloride exposure of cracked reinforced strain hardening cement-based composite (R/SHCC) specimens for a period of one year. Based on these novel results, a corrosion model is proposed which incorporates crack width, crack spacing, free chloride content and cover depth. The model is shown to capture the corrosion results of cracked R/SHCC reported in this paper. |
| first_indexed | 2024-10-01T05:14:23Z |
| format | Journal Article |
| id | ntu-10356/80325 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:14:23Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/803252023-03-04T17:13:29Z Chloride-induced corrosion modelling of cracked reinforced SHCC Paul, Suvash Chandra van Zijl, Gideon P.A.G. School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Cracks Chloride Corrosion of steel bars in concrete is usually a slow electrochemical process which may need a long time before damage becomes visible in the reinforced concrete (RC). However, cracks provide quick access to chloride, oxygen and water into concrete and accelerate the corrosion process. Corrosion modelling is essential for structural design for a particular life span, or to inform decisions on repair of RC structures to reach or extend their service life. This paper reports experimental research results of accelerated chloride exposure of cracked reinforced strain hardening cement-based composite (R/SHCC) specimens for a period of one year. Based on these novel results, a corrosion model is proposed which incorporates crack width, crack spacing, free chloride content and cover depth. The model is shown to capture the corrosion results of cracked R/SHCC reported in this paper. Accepted version 2017-03-01T09:21:09Z 2019-12-06T13:47:15Z 2017-03-01T09:21:09Z 2019-12-06T13:47:15Z 2016 Journal Article Paul, S. C., & van Zijl, G. P. (2016). Chloride-induced corrosion modelling of cracked reinforced SHCC. Archives of Civil and Mechanical Engineering, 16(4), 734-742. 1644-9665 https://hdl.handle.net/10356/80325 http://hdl.handle.net/10220/42148 10.1016/j.acme.2016.04.016 en Archives of Civil and Mechanical Engineering © 2016 Politechnika Wrocławska (Published by Elsevier Urban & Partner Sp. z o.o.). This is the author created version of a work that has been peer reviewed and accepted for publication in Archives of Civil and Mechanical Engineering, published by Elsevier Urban & Partner Sp. z o.o. on behalf of Politechnika Wrocławska. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.acme.2016.04.016]. 18 p. application/pdf |
| spellingShingle | Cracks Chloride Paul, Suvash Chandra van Zijl, Gideon P.A.G. Chloride-induced corrosion modelling of cracked reinforced SHCC |
| title | Chloride-induced corrosion modelling of cracked reinforced SHCC |
| title_full | Chloride-induced corrosion modelling of cracked reinforced SHCC |
| title_fullStr | Chloride-induced corrosion modelling of cracked reinforced SHCC |
| title_full_unstemmed | Chloride-induced corrosion modelling of cracked reinforced SHCC |
| title_short | Chloride-induced corrosion modelling of cracked reinforced SHCC |
| title_sort | chloride induced corrosion modelling of cracked reinforced shcc |
| topic | Cracks Chloride |
| url | https://hdl.handle.net/10356/80325 http://hdl.handle.net/10220/42148 |
| work_keys_str_mv | AT paulsuvashchandra chlorideinducedcorrosionmodellingofcrackedreinforcedshcc AT vanzijlgideonpag chlorideinducedcorrosionmodellingofcrackedreinforcedshcc |