Concrete Crack Restoration Using Bacterially Induced Calcium Metabolism
| Autor: | Smitha Mony Sreedharan, Ashim Mitra, Rajni Singh |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Calcium metabolism 0303 health sciences Materials science 030306 microbiology Scanning electron microscope Precipitation (chemistry) Pellets Short Communications Ultrasonic pulse velocity test chemistry.chemical_element Calcium 01 natural sciences Microbiology 03 medical and health sciences chemistry.chemical_compound Calcium carbonate chemistry 010608 biotechnology Fourier transform infrared spectroscopy Composite material |
| Zdroj: | Indian J Microbiol |
| Popis: | Concrete structures are prone to develop cracks and cause devastation. Repair and renovation are not enough to ensure complete eradication of crack development. The entire process is costly and laborious. The microbiologically induced calcium carbonated precipitation can be effective in restoring the cracks. The calcium-based nutrients along with specific bacterial strain have been used in the present investigation. The pellets of calcium as per Fourier transform infrared spectroscopy and energy-dispersive X-ray spectroscopy are deposited in the cracks of the concrete over a period of 7 days of incubation. The presence of bacteria in the calcium precipitates as demonstrated by scanning electron microscope provides adequate strength and adhering quality to the pellets. The effective filling of cracks is confirmed with the help ultrasonic pulse velocity test also. Since, elephantine heritage and high sky buildings have high maintenance costs, the use of present technique will cut down the cost and duration of restoration. SUPPLEMENTARY INFORMATION: The online version of this article (10.1007/s12088-020-00916-0) contains supplementary material, which is available to authorized users. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|