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The increasing concern for the safety and sustainability of structures is calling for the development of smart self-healing materials and preventive repair methods. This research is carried out to investigate the extent of self-healing in normal-strength concrete by using Sporosarcina aquimarina – NCCP-2716 immobilized in expanded perlite (EP) as the carrier. The efficacy of crack-healing was also tested using two alternative self-healing techniques, i.e. expanded perlite (EP) concrete and direct introduction of bacteria in concrete. A bacterial solution was embedded in EP and calcium lactate pentahydrate was added as the nutrient. Experiments revealed that specimens containing EP-immobilized bacteria had the most effective crack-healing. After 28 days of healing, the values of completely healed crack widths were up to 0.78 mm, which is higher than the 0.5 mm value for specimens with the direct addition of bacteria. The specimen showed a significant self-healing phenomenon caused by substantial calcite precipitation by bacteria. The induced cracks were observed to be repaired autonomously by the calcite produced by the bacteria without any adverse effect on strength. The results of this research could provide a scientific foundation for the use of expanded perlite as a novel microbe carrier and Sporosarcina aquimarina as a potential microbe in bacteria-based self-healing concrete.
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Tom
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art. no. e146475
Opis fizyczny
Bibliogr. 36 poz., rys., tab.
Twórcy
autor
- Department of Civil Engineering, Military College of Engineering, Risalpur, sub-campus of National University of Sciences and Technology, Islamabad, Pakistan
autor
- Department of Civil Engineering, Military College of Engineering, Risalpur, sub-campus of National University of Sciences and Technology, Islamabad, Pakistan
autor
- Department of Civil Engineering, Military College of Engineering, Risalpur, sub-campus of National University of Sciences and Technology, Islamabad, Pakistan
autor
- Principal Scientific Officer / Program Leader at Pakistan Agricultural Research Council Islamabad, Pakistan
autor
- Department of Civil Engineering, College of Engineering, Qassim University, Buraydah 51452, Saudi Arabia
autor
- Department of Civil Engineering, Military College of Engineering, Risalpur, sub-campus of National University of Sciences and Technology, Islamabad, Pakistan
Bibliografia
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- [20] X. Chen, H. Guo, and X. Cheng, “Heavy metal immobilisation and particle cementation of tailings by biomineralisation,” Environ. Geotech., vol. 5, no. 2, pp. 107–113, 2017.
- [21] J.-H. Yoon, K.-C. Lee, N. Weiss, Y.H. Kho, K.H. Kang, and Y.-H. Park, “Sporosarcina aquimarina sp. nov., a bacterium isolated from seawater in Korea, and transfer of Bacillus globisporus (Larkin and Stokes 1967), Bacillus psychrophilus (Nakamura 1984) and Bacillus pasteurii (Chester 1898) to the genus Sporosarcina as Sporosa,” Int. J. Syst. Evol. Microbiol., vol. 51, no. 3, pp. 1079–1086, 2001.
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- [29] J. Ahmad, A. Majdi, A.F. Deifalla, H.F. Isleem, and C. Rahmawati, “Concrete Made with Partially Substitutions of Copper Slag (CPS): State of the Art Review,” Materials, vol. 15, no. 15, p. 5196, Jul. 2022.
- [30] F. Althoey, A.K.A. El-Aal, H. Shoukry, and I. Hakeem, “Performance of Cement Mortars Containing Clay Exposed to High Temperature,” Arab. J. Sci. Eng., vol. 47, no. 1, pp. 591–599, 2022.
- [31] B.Y. Polat and M. Uysal, “Bacterial crack healing in metakaolin based geopolymer mortars,” J. Build. Eng., vol. 39, p. 102291, 2021.
- [32] D. Alemu, W. Demiss, and G. Korsa, “Bacterial Performance in Crack Healing and its Role in Creating Sustainable Construction,” Int. J. Microbiol., vol. 2022, p. 6907314, 2022.
- [33] E. Stanaszek-Tomal, “Bacterial concrete as a sustainable building material?” Sustainability, vol. 12, no. 2, p. 696, 2020.
- [34] H.M. Jonkers and E. Schlangen, “A two component bacteria-based self-healing concrete,” in Concrete repair, rehabilitation and retrofitting II, CRC Press, 2008, pp. 137–138.
- [35] W. Khaliq and M.B. Ehsan, “Crack healing in concrete using various bio influenced self-healing techniques,” Constr. Build. Mater., vol. 102, pp. 349–357, 2016.
- [36] M. Rajasegar and C.M. Kumaar, “Hybrid effect of poly vinyl alcohol, expansive minerals, nano-silica and rice husk ash on the self-healing ability of concrete,” Mater. Today Proc., vol. 45, pp. 5944–5952, 2021.
Uwagi
Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-e28574a2-3396-4497-a8d0-9c5dcf9987af