Abstract
In this paper, an experimental investigation was carried out on mortar cubes to study the influence of Bacillus subtilis bacteria, nanosilica used as a carrier material and GGBFS (0 and 10%) as cement replacement on compressive strength by direct application and bacteria immobilization at 3, 7, and 28 days of moisture curing. The compressive strength results showed significant improvement in bacteria specimens than the control mortar specimens. Visual observations were made to witness the white powdery precipitate on the cracked areas; optical microscopic images were taken to analyze the rate of crack healing efficiency of cracked specimens and also studied the microstructural characterization of cracked compounds using scanning electron microscope (SEM).
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Authors would like to thank SASTRA Deemed University for the support to perform the experimental works in the laboratory.
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Padichetty, M., Sreekrishna, R.V., Chinthakunta, H., Deepalakshmi, R., Sumathi, A. (2021). A Study on the Strength of Bacteria-based Cementitious Mortar. In: Biswas, S., Metya, S., Kumar, S., Samui, P. (eds) Advances in Sustainable Construction Materials. Lecture Notes in Civil Engineering, vol 124. Springer, Singapore. https://doi.org/10.1007/978-981-33-4590-4_51
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