Corrosion deterioration of steel in cracked SHCC
The presence of cracks is unavoidable in reinforced concrete structures and also a gateway for chloride into concrete, leading to corrosion of steel reinforcing bars. So, crack control, crack width limitation and chloride threshold levels are well-established concepts in durability of reinforced con...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2018
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| Online Access: | https://hdl.handle.net/10356/88843 http://hdl.handle.net/10220/45921 |
| _version_ | 1811693122709618688 |
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| author | Paul, Suvash Chandra van Zijl, Gideon Pieter Adriaan Greeff |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Paul, Suvash Chandra van Zijl, Gideon Pieter Adriaan Greeff |
| author_sort | Paul, Suvash Chandra |
| collection | NTU |
| description | The presence of cracks is unavoidable in reinforced concrete structures and also a gateway for chloride into concrete, leading to corrosion of steel reinforcing bars. So, crack control, crack width limitation and chloride threshold levels are well-established concepts in durability of reinforced concrete structures. This paper reports on accelerated chloride-induced corrosion in cracked reinforced strain-hardening cement-based composites and reinforced mortar beams, both in loaded and unloaded states. Corrosion rates are monitored and loss of mass and yield force, as well as corrosion pitting depth in steel bars are reported. The chloride content at different depths in specimens is also determined through XRF, and through chemical testing of acid and water soluble chloride content by titration. Finally, different relationships are drawn between crack properties, mass loss, yield force, corroded depth and chloride levels at the steel surface for different cover depths. It is found that the crack spacing and free chloride at the steel surface level are best correlated to the corrosion damage in the specimens. |
| first_indexed | 2024-10-01T06:46:40Z |
| format | Journal Article |
| id | ntu-10356/88843 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:46:40Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/888432023-03-04T17:17:20Z Corrosion deterioration of steel in cracked SHCC Paul, Suvash Chandra van Zijl, Gideon Pieter Adriaan Greeff School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Corrosion DRNTU::Engineering::Mechanical engineering Chloride The presence of cracks is unavoidable in reinforced concrete structures and also a gateway for chloride into concrete, leading to corrosion of steel reinforcing bars. So, crack control, crack width limitation and chloride threshold levels are well-established concepts in durability of reinforced concrete structures. This paper reports on accelerated chloride-induced corrosion in cracked reinforced strain-hardening cement-based composites and reinforced mortar beams, both in loaded and unloaded states. Corrosion rates are monitored and loss of mass and yield force, as well as corrosion pitting depth in steel bars are reported. The chloride content at different depths in specimens is also determined through XRF, and through chemical testing of acid and water soluble chloride content by titration. Finally, different relationships are drawn between crack properties, mass loss, yield force, corroded depth and chloride levels at the steel surface for different cover depths. It is found that the crack spacing and free chloride at the steel surface level are best correlated to the corrosion damage in the specimens. Published version 2018-09-11T01:28:31Z 2019-12-06T17:12:06Z 2018-09-11T01:28:31Z 2019-12-06T17:12:06Z 2017 Journal Article Paul, S. C., & van Zijl, G. P. A. G. (2017). Corrosion deterioration of steel in cracked SHCC. International Journal of Concrete Structures and Materials, 11(3), 557-572. doi:10.1007/s40069-017-0205-8 1976-0485 https://hdl.handle.net/10356/88843 http://hdl.handle.net/10220/45921 10.1007/s40069-017-0205-8 en International Journal of Concrete Structures and Materials © 2017 The Author(s). This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 16 p. application/pdf |
| spellingShingle | Corrosion DRNTU::Engineering::Mechanical engineering Chloride Paul, Suvash Chandra van Zijl, Gideon Pieter Adriaan Greeff Corrosion deterioration of steel in cracked SHCC |
| title | Corrosion deterioration of steel in cracked SHCC |
| title_full | Corrosion deterioration of steel in cracked SHCC |
| title_fullStr | Corrosion deterioration of steel in cracked SHCC |
| title_full_unstemmed | Corrosion deterioration of steel in cracked SHCC |
| title_short | Corrosion deterioration of steel in cracked SHCC |
| title_sort | corrosion deterioration of steel in cracked shcc |
| topic | Corrosion DRNTU::Engineering::Mechanical engineering Chloride |
| url | https://hdl.handle.net/10356/88843 http://hdl.handle.net/10220/45921 |
| work_keys_str_mv | AT paulsuvashchandra corrosiondeteriorationofsteelincrackedshcc AT vanzijlgideonpieteradriaangreeff corrosiondeteriorationofsteelincrackedshcc |