Title:
Concrete’s Green Potential: Integrating Supplementary Cementitious Materials with Biomolecule-Regulated Carbonation for Deep Decarbonization
Author(s):
Amaral
Publication:
Web Session
Volume:
ws_F24_Amaral.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
11/3/2024
Abstract:
This study addresses the construction industry's need for sustainable practices by combining traditional supplementary cementitious materials (SCMs) with a novel biomolecule-regulated carbonation (BioCarb) process. This integration aims to reduce concrete's carbon footprint significantly. The BioCarb method transforms cement slurry into a CO2 absorbent, with biomolecules regulating calcium carbonate formation. This approach overcomes the low early strength issue of SCMs by providing seeding during carbonation, enhancing mechanical performance by up to 20% in compressive strength. Experimental data shows that the carbonation process sequesters at least 15 lb of CO2 per cubic yard of concrete. Replacing 20-30% of Ordinary Portland Cement (OPC) with SCMs further reduces the concrete mix's carbon footprint. This synergistic approach addresses sustainability challenges and promotes a more resilient, eco-friendly built environment.