Use of biomineralization in recycled aggregate concrete

Boğaziçi and Özyeğin University Researchers Collaborate on Sustainable Concrete

This collaborative research aims to improve the mechanical properties of recycled aggregate concrete by using BACTERIA. Microbial induced calcium carbonate precipitation (MICCP) is a promising biomineralization technique that has been used in several civil engineering applications such as soil consolidation, promoting microbial self-healing and strength improvement in cement-based materials. In this study, calcium carbonates are induced via ureolytic Sporosarcina pasteurii and deposited within the cracks and inclusions on recycled aggregates. With this sustainable approach, the water absorption capacity of the recycled aggregate is decreased while their performance in concrete mixes has improved. For more information, please contact Dr. Özyurt Zihnioğlu.