Microstructural Characterization of Calcite Mineral Precipitation in Bacteria Incorporated Concrete
K Satya Sai Trimurty Naidu1, M V Seshagiri Rao2, V Srinivasa Reddy3
1K Satya Sai Trimurty Naidu, Research Scholar, Department of Civil Engg., JNTUH CEH, Telangana.
2M V Seshagiri Rao, Professor of Civil Engg., CVR College of Engineering, Telangana.
3V Srinivasa Reddy, Professor of Civil Engg., GRIET, Hyderabad.
Manuscript received on 20 August 2019 | Revised Manuscript received on 27 August 2019 | Manuscript Published on 31 August 2019 | PP: 641-643 | Volume-8 Issue-9S2 August 2019 | Retrieval Number: I11300789S219/19©BEIESP DOI: 10.35940/ijitee.I1130.0789S219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Metabolic activity of alkali-philic calcite (CaCO3) mineral precipitating bacteria when introduced into concrete heals the cracks and improves the microstructure of the concrete. This process of bio-mineralization by mineral producing bacteria can be characterized and quantified by using microstructure characterization techniques. The present paper is focused on characterizing the mineral precipitation in concrete by Sporosarcina pasteurii as calcite using SEM, XRD and TGA nano-characterization procedures to validate that cracks and pores in bacteria incorporated concrete were closed with the mineral precipitates produced due to urealotic activity of bacteria by hydrolyzing the urea based nutrients.
Keywords: Bacterial Concrete, Bacillus Subtilis, SEM, XRD, TGA
Scope of the Article: Computational Techniques in Civil Engineering