Assessing the performance of metakaolin-enriched bio-mineralized concrete

Abstract

This research paper delves into an innovative approach leveraging pozzolanic material, particularly Metakaolin (MK), as a sustainable substitute for cement in concrete production. The study explores the integration of MK at various ratios, examining its impact on the creation of eco-friendly bio-mineralized concrete. By assessing MK ratios up to 15% by weight of cement, this work identifies a threshold—10% MK—that significantly enhances concrete properties, notably reducing permeability by 23.63% at 28 days. Incorporating bacteria at a concentration of 10^5 cfu/ml further amplifies these benefits, showcasing a 19% increase in compressive strength and a remarkable 43.23% reduction in permeability through calcium carbonate deposition. This synergy between MK and bio-mineralization not only fortifies concrete but also curtails cement content while maintaining or even enhancing its durability and strength. The research underscores the potential of MK and bio-mineralization as game-changing, eco-conscious solutions for concrete manufacturing, advocating for their adoption in construction to mitigate cement's environmental impact and address waste disposal, ultimately fostering sustainable growth in the industry. The study's findings spotlight a paradigm shift toward integrating biological processes into construction engineering, paving the way for a greener, more resilient built environment.