Andalib, R. and Abd. Majid, M. Z. and Hussin, M. W. and Ponraj, M. and Keyvanfar, A. and Mirza, J. and Lee, H. S. (2016) Optimum concentration of Bacillus megaterium for strengthening structural concrete. Construction and Building Materials, 118 . pp. 180-193. ISSN 0950-0618
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Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....
Abstract
Five different cell concentrations of Bacillus megaterium (10 × 105 to 50 × 105 cfu/ml) were introduced in structural concrete to achieve the optimum concentration of bacteria. The significant increase in the strength was obtained in the case of 30 × 105 cfu/ml at different ages. The strength of highest grade of bacterial concrete had improved (24%) as compared to lowest grade (12.8%) due to calcification mechanism. Microbial calcite precipitation was quantified using X-ray diffraction analysis, visualized by scanning electron microscopy and analyzed by energy dispersive spectrometer. It was found that the optimum concentration of B. megaterium had a positive effect on high strength structural concrete.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Bacteriology, Biomineralization, Calcite, Scanning electron microscopy, Spectrometers, X ray diffraction analysis, Bacillus megaterium, Calcite precipitation, Cell concentrations, Energy dispersive spectrometers, Microbial calcites, Optimum concentration, Strength, Structural concretes, Concretes |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Civil Engineering |
| ID Code: | 72198 |
| Deposited By: | Fazli Masari |
| Deposited On: | 23 Nov 2017 06:19 |
| Last Modified: | 23 Nov 2017 06:19 |
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