Smart Innovations and Constructions- Book- ISBN- 978-81-953658-0-7

Authors:- Gaurav A. Vishroliya, Hardik Solanki

Abstract The formation of a microcrack in concrete is common, which leads to costly maintenance. The concrete needs to be repaired. Bio-mimicry techniques give favourable results in sealing micro-crack & heal this crack in the concrete. To overcome these situations, self-healing techniques are adopted. By the adding of lime producing bacteria along with calcium lactate result in calcite precipitation in concrete. Sealing work explores the use of Super Absorbent Polymer in concrete with proper mix design. Various properties, including the viscosity, the curing time, the swelling capacity and cross-linking efficiency, has been evaluated. A continuous hydration process in concrete can seal up the freshly formed microcrack. Bacteria bacillus subtilis which can produce lime, is added to the healing agent to seal the freshly formed micro-cracks by CaCo3 precipitation. The increase of durability, compressive strength and reduction of permeability in concrete is attained. The ability to heal and seal the cracks in concrete was observed. Maintaining pH under favourable conditions, the permeability of concrete, crack healing capacity of concrete was observed.

Keywords: - bio-mimicry, self-healing, super absorbent polymer, bacillus subtilis, calcium lactate, sodium polyacrylate;