Investigation of cement mortar incorporating Bacillus sphaericus
Ureolytic-type bacteria has been used to improve the strength of cement mortar by the precipitation of calcium carbonate. In the present study Bacillus sphaericus has been used to improve the properties of cement mortar such as setting time, compressive strength and sorptivity. The setting time is f...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2016-04-01
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| Series: | International Journal of Smart and Nano Materials |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/19475411.2016.1205157 |
| _version_ | 1819072775249199104 |
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| author | Kirti Kanta Sahoo Aparna K. Sathyan Chandni Kumari Pradip Sarkar Robin Davis |
| author_facet | Kirti Kanta Sahoo Aparna K. Sathyan Chandni Kumari Pradip Sarkar Robin Davis |
| author_sort | Kirti Kanta Sahoo |
| collection | DOAJ |
| description | Ureolytic-type bacteria has been used to improve the strength of cement mortar by the precipitation of calcium carbonate. In the present study Bacillus sphaericus has been used to improve the properties of cement mortar such as setting time, compressive strength and sorptivity. The setting time is found to be unaffected by the presence of bacteria. It is found that compressive strength at both 7-days and 28-days of mortar cube increases with the increase of bacteria concentration. At the optimum bacteria dosage of 107 cells/ml, the average compressive strength increases by 58% (at 7 day) and 23% (at 28 day) over the control specimen. The sorpitivity coefficient decreases as the concentration of bacterial cells increases. The mineralogy and morphology of the calcium carbonate precipitation have been tested by XRD and FESEM. |
| first_indexed | 2024-12-21T17:43:05Z |
| format | Article |
| id | doaj.art-fb78d070f401463d8d284a60e3da417d |
| institution | Directory Open Access Journal |
| issn | 1947-5411 1947-542X |
| language | English |
| last_indexed | 2024-12-21T17:43:05Z |
| publishDate | 2016-04-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | International Journal of Smart and Nano Materials |
| spelling | doaj.art-fb78d070f401463d8d284a60e3da417d2022-12-21T18:55:34ZengTaylor & Francis GroupInternational Journal of Smart and Nano Materials1947-54111947-542X2016-04-01729110510.1080/19475411.2016.12051571205157Investigation of cement mortar incorporating Bacillus sphaericusKirti Kanta Sahoo0Aparna K. Sathyan1Chandni Kumari2Pradip Sarkar3Robin Davis4National Institute of Technology RourkelaNational Institute of Technology RourkelaNational Institute of Technology RourkelaNational Institute of Technology RourkelaNational Institute of Technology RourkelaUreolytic-type bacteria has been used to improve the strength of cement mortar by the precipitation of calcium carbonate. In the present study Bacillus sphaericus has been used to improve the properties of cement mortar such as setting time, compressive strength and sorptivity. The setting time is found to be unaffected by the presence of bacteria. It is found that compressive strength at both 7-days and 28-days of mortar cube increases with the increase of bacteria concentration. At the optimum bacteria dosage of 107 cells/ml, the average compressive strength increases by 58% (at 7 day) and 23% (at 28 day) over the control specimen. The sorpitivity coefficient decreases as the concentration of bacterial cells increases. The mineralogy and morphology of the calcium carbonate precipitation have been tested by XRD and FESEM.http://dx.doi.org/10.1080/19475411.2016.1205157bacteriasetting timecompressive strengthcalcite precipitationsorptivity |
| spellingShingle | Kirti Kanta Sahoo Aparna K. Sathyan Chandni Kumari Pradip Sarkar Robin Davis Investigation of cement mortar incorporating Bacillus sphaericus International Journal of Smart and Nano Materials bacteria setting time compressive strength calcite precipitation sorptivity |
| title | Investigation of cement mortar incorporating Bacillus sphaericus |
| title_full | Investigation of cement mortar incorporating Bacillus sphaericus |
| title_fullStr | Investigation of cement mortar incorporating Bacillus sphaericus |
| title_full_unstemmed | Investigation of cement mortar incorporating Bacillus sphaericus |
| title_short | Investigation of cement mortar incorporating Bacillus sphaericus |
| title_sort | investigation of cement mortar incorporating bacillus sphaericus |
| topic | bacteria setting time compressive strength calcite precipitation sorptivity |
| url | http://dx.doi.org/10.1080/19475411.2016.1205157 |
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