Biogenic treatment improves the durability and remediates the cracks of concrete structures
Microbially induced calcium carbonate precipitation is a naturally occurring biological process that has various applications in remediation and restoration of range of building materials. In the present study the role of bacteria Bacillus sp. on the durability properties and remediation of cracks i...
| Main Authors: | , , |
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| Format: | Journal Article |
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Elsevier BV
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/17698 |
| _version_ | 1848749533091069952 |
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| author | Achal, V. Mukherjee, Abhijit Reddy, M. |
| author_facet | Achal, V. Mukherjee, Abhijit Reddy, M. |
| author_sort | Achal, V. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Microbially induced calcium carbonate precipitation is a naturally occurring biological process that has various applications in remediation and restoration of range of building materials. In the present study the role of bacteria Bacillus sp. on the durability properties and remediation of cracks in cementitious structures were studied. ‘‘Biocement’’ induced by a Bacillus sp. lead to more than 50% reduction in the porosity of mortar specimens, while chloride permeability of concrete changed from ‘‘moderate’’ to ‘‘very low’’ as indicated by rapid chloride permeability test. The bacteria successfully healed the simulated cracks of depths including 27.2 mm in cement mortars with increase in the compressive strength as high as 40% of that of control. The results clearly showed microbially induced calcium carbonate precipitation can be applied for various building materials for remediation of cracks and enhancement of durability. |
| first_indexed | 2025-11-14T07:22:27Z |
| format | Journal Article |
| id | curtin-20.500.11937-17698 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:22:27Z |
| publishDate | 2013 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-176982017-09-13T15:44:54Z Biogenic treatment improves the durability and remediates the cracks of concrete structures Achal, V. Mukherjee, Abhijit Reddy, M. Porosity - Rapid chloride penetration test Biocement Bacillus sp Microbially induced calcite precipitation Urease Self-healing Microbially induced calcium carbonate precipitation is a naturally occurring biological process that has various applications in remediation and restoration of range of building materials. In the present study the role of bacteria Bacillus sp. on the durability properties and remediation of cracks in cementitious structures were studied. ‘‘Biocement’’ induced by a Bacillus sp. lead to more than 50% reduction in the porosity of mortar specimens, while chloride permeability of concrete changed from ‘‘moderate’’ to ‘‘very low’’ as indicated by rapid chloride permeability test. The bacteria successfully healed the simulated cracks of depths including 27.2 mm in cement mortars with increase in the compressive strength as high as 40% of that of control. The results clearly showed microbially induced calcium carbonate precipitation can be applied for various building materials for remediation of cracks and enhancement of durability. 2013 Journal Article http://hdl.handle.net/20.500.11937/17698 10.1016/j.conbuildmat.2013.06.061 Elsevier BV restricted |
| spellingShingle | Porosity - Rapid chloride penetration test Biocement Bacillus sp Microbially induced calcite precipitation Urease Self-healing Achal, V. Mukherjee, Abhijit Reddy, M. Biogenic treatment improves the durability and remediates the cracks of concrete structures |
| title | Biogenic treatment improves the durability and remediates the cracks of concrete structures |
| title_full | Biogenic treatment improves the durability and remediates the cracks of concrete structures |
| title_fullStr | Biogenic treatment improves the durability and remediates the cracks of concrete structures |
| title_full_unstemmed | Biogenic treatment improves the durability and remediates the cracks of concrete structures |
| title_short | Biogenic treatment improves the durability and remediates the cracks of concrete structures |
| title_sort | biogenic treatment improves the durability and remediates the cracks of concrete structures |
| topic | Porosity - Rapid chloride penetration test Biocement Bacillus sp Microbially induced calcite precipitation Urease Self-healing |
| url | http://hdl.handle.net/20.500.11937/17698 |