Exploratory Research using Bacteria (Bacillus Subtilis) as a Self-Healing Concrete: A Basis for Strengthening Infrastructure in the Philippine Setting
Lagazo, Magil A.1, Noriesta2, Carla Pamela D.3, Montecalvo4, Marlou A.5, Roselle P. Alviar-Adviser6
1Lagazo, Magil A., Department of Civil Engineering, College of Engineering UPHSD Calamba, Philippines.
2Noriesta, Department of Civil Engineering, College of Engineering UPHSD Calamba, Philippines.
3Carla Pamela D., Department of Civil Engineering, College of Engineering UPHSD Calamba, Philippines.
4Montecalvo, Department of Civil Engineering, College of Engineering UPHSD Calamba, Philippines.
5Marlou A., Department of Civil Engineering, College of Engineering UPHSD Calamba, Philippines.
6Engr. Roselle P. Alviar-Adviser, Department of Civil Engineering, College of Engineering UPHSD Calamba, Philippines.
Manuscript received on 02 June 2019 | Revised Manuscript received on 27 June 2019 | Manuscript Published on 04 July 2019 | PP: 125-129 | Volume-8 Issue-1S4 June 2019 | Retrieval Number: A10250681S419/2019©BEIESP
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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: This study demonstrates that the utilization of microorganisms-Bacillus Subtlis is productive for development a tough framework and put forth a concentrated effort mending concrete as strategy for break control to upgrade administration life in solid structure. In this paper, the system Microbiologically Induced Calcite Precipitation (MICP) is embraced. It is the utilization of Bacillus Subtilis alongside its nutrients which is the Sodium Bicarbonate (NaHCo3), Ammonium Carbonate (NH4Cl), Calcium Chloride Dehydrate (CaCl2), and nutrient broth. The mixing proporton used is 1:2 ½: 5:0.45 along with 30 ml liquid form of Bacillus Subtilis with the cell concentration of 105 cells/ml. The strength of concrete mix is evaluated by conducting test on 150mm x 150mm x 150mm cube for compressive strength test, 6in x 12in cylindrical mold for split tensile strength test, 21in x 6in x 6in rectangular beams for flexural strength text and 3in x 6in for water absorption test, 3 specimens each test. All specimen utilized for recuperating is 4in x 2in x 2in which is deliberately broken. The investigation demonstrates that there is a noteworthy increment in the quality of cement added with bacteria or bacterial concrete contrasted with conventional concrete and in this manner calcium carbonate precipitation is obvious following 3-4 weeks in small scale splits.
Keywords: Microbiologically Induced Calcite Precipitation, Bacillus Subtilis, Conventional Concrete, Bacterial Concrete.
Scope of the Article: Concrete Structures