Corrosion Characteristics and Durability of Bio Concrete – A Review

Abstract

Abstract Concrete, is a crucial construction material widely used in infrastructure, has inherent limitations despite its versatility. It exhibits constrained ductility, low resistance to cracking, and relatively weak tensile strength. Global research has continuously sought modifications to address these issues in conventional cement concrete. Periodic exposure to harmful substances can lead to concrete corrosion, potentially causing structural failures that impact long-term operational efficiency. Studies in the literature focus on enhancing corrosion resistance, with microbiologically induced calcite precipitation (MICP) being a notable outcome. Recent research highlights specific bacterial species, like Bacillus subtilis, capable of enhancing the durability and lifespan of concrete structures. However, the actual impact on strength and properties depends on factors such as concrete mix design, bacterial concentration, and environmental conditions. Ongoing research in Bacillus subtilis application is evolving, and actual data may vary based on specific experiments and conditions. For the latest information, referring to the current scientific literature is recommended. Microbial concrete holds promise in significantly extending infrastructure service life, reducing maintenance expenses, and enhancing structural safety. This study delves into the fundamental mechanism of microbiological concrete, offering insights into factors strengthening and prolonging concrete life while presenting limitations.