SELF-HEALING CONCRETE – A SUSTAINABLE WAY IN CONSTRUCTION

Abstract

Self-healing concrete provides a creative and sustainable solution to cracking, a big problem in construction. Conventional concrete is considered strong and adaptable. however, over time, it is prone to cracking due to temperature variations, shrinkage, Creep and mechanical stresses. Such cracks compromise the durability of the concrete and usualy require costly and time-consuming repairs. Self-healing concrete offers a biogenic alternative, especially along with external bacterial treatment. This study investigates the healing efficiency of concrete by external application of bacterial solution to concrete cracks. This specimen will be cast using nominal concrete. Later, the specimens are tested for Ultrasonic pulse velocity, flexural behaviour and visual inspection of self-healing concrete will be studied. We’ve used iron Beam moulds of size 50cm x 10cm x 10cm and cube moulds of 15cm x 15cm x 15cm for casting the specimens. These specimens will then be cured and tested for UPV, visual inspection at 7 and 14 days after bacterial treatment. In this study, the hair cracks and micro cracks up to 0.5mm by using the bacterial treatment. are healed and the velocities are increased from 1.5% to 5.05% by bacterial specimens compared to velocities of cracked specimens.