Paper Title :Study the Effect of Bacillus Cereus on the Strength Characteristics of Rice Husk Ash Concrete

Author :Deeptesh Pawaskar, Basavraj Hungund, Manojkumar V. Chitawadagi

Article Citation :Deeptesh Pawaskar ,Basavraj Hungund ,Manojkumar V. Chitawadagi , (2019 ) " Study the Effect of Bacillus Cereus on the Strength Characteristics of Rice Husk Ash Concrete " , International Journal of Advances in Mechanical and Civil Engineering (IJAMCE) , pp. 5-9, Volume-6,Issue-4

Abstract : The effect of Bacillus cereus on the mechanical properties of the concrete formed with 20% replacement of Rice Husk Ash to the weight cement is presented in the study. For the purpose of this study, a control mix was designed to have 28-day strength of 20 MPa in which cement was replaced with RHA by 20% of its weight. Then Bacillus cereus was introduced in the mix in the concentration of 5%, 10%, and 15%. Tests were for performed for compression strength, water absorption, and impact strength. Results showed that the introduction of the Bacillus cereus in the concrete improved its compressive strength to 33% than that of the control mix for 15% concentration of Bacillus cereus at 28 days of curing. Bacillus cereus of with the concrete reduced the water absorption from 2.4% to 1.7% at 15% concentration, confirming the calcite precipitation. Scanning Electron Microscopy and X-Ray Diffraction spectroscopy on the control sample and the sample with 15% Bacillus cereus broth at 28 days of curing exhibited the formation of additional CSH, calcite precipitation in the micro-pores and improved the microstructure of the concrete at 15% Bacillus cereus broth and made concrete matrix denser. All these findings indicated that the replacement of RHA with the introduction of Bacillus cereus improved the mechanical properties of concrete. Keywords - Bacillus cereus, Rice Husk Ash, Compression Strength, Scanning Electron Microscopy.

Type : Research paper

Published : Volume-6,Issue-4

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