dc.contributor.author | Shaheen, Nafeesa![]() |
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dc.contributor.author | Khushnood, Rao Arsalan![]() |
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dc.contributor.author | Memon, Shazim Ali![]() |
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dc.contributor.author | Adnan, Fazal![]() |
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dc.date.accessioned | 2023-02-02T04:44:03Z | |
dc.date.available | 2023-02-02T04:44:03Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Shaheen, N., Khushnood, R. A., Memon, S. A., & Adnan, F. (2023). Feasibility assessment of newly isolated calcifying bacterial strains in self-healing concrete. Construction and Building Materials, 362, 129662. https://doi.org/10.1016/j.conbuildmat.2022.129662 | en_US |
dc.identifier.uri | http://nur.nu.edu.kz/handle/123456789/6909 | |
dc.description.abstract | In the present study, rarely explored spore former (Bacillus safensis & Bacillus pumilus) and non-spore former (Arthrobacter luteolus, Chryseomicrobium imtechense & Corynebacterium efficiens) alkaliphilic calcifying microbes were evaluated for their prolonged survival in cementitious environment. Extensive experimental program was designed to examine mechanical, self-healing, microstructural modifications and durability of self-healing concrete (SHC). Results of the experimental program endorsed the survival of all bacterial strains in the harsh concrete environment along-with improved mechanical response of matrix. Moreover, investigated strains were capable of precipitating copious amount of calcite having maximum of 0.8 mm average crack healing with 86 % strength recovery. Densification of microstructure was evident from the microstructural evaluation and pore refinement. SHC portrayed a significant resistance of 50 % and 20 % against Cl- penetration and sulphate attack. Conclusively, these strains have potential to impart sustainability in concrete structures by extending the structural life, subsiding repairs cost and conserving the natural resources. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Construction and Building Materials | en_US |
dc.rights | Attribution-NonCommercial-ShareAlike 3.0 United States | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/3.0/us/ | * |
dc.subject | Type of access: Open Access | en_US |
dc.subject | Self-healing concrete | en_US |
dc.subject | Bacillus safensis | en_US |
dc.subject | Bacillus pumilus | en_US |
dc.subject | Arthrobacter luteolus | en_US |
dc.subject | Chryseomicrobium imtechense | en_US |
dc.subject | Corynebacterium efficiens | en_US |
dc.subject | Sustainable concrete | en_US |
dc.title | FEASIBILITY ASSESSMENT OF NEWLY ISOLATED CALCIFYING BACTERIAL STRAINS IN SELF-HEALING CONCRETE | en_US |
dc.type | Article | en_US |
workflow.import.source | science |
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