Developing Net-Zero Infrastructure Concrete via Recycled Aggregates
Deploying an industrial-scale closed-loop recycling matrix that incorporates crushed demolition waste and captured CO2 into high-strength structural concrete.
The Challenge: The Heavy Footprint of Urban Demolition
Traditional concrete production is responsible for roughly 8% of global CO2 emissions. Concurrently, construction and demolition waste dominates landfills. This project aimed to prove that structural-grade, heavy-infrastructure concrete could be manufactured using 100% recycled aggregates and carbon mineralization technologies.
Our Approach: Carbon Mineralization and Closed-Loop Sourcing
We partnered with regional demolition firms to harvest waste concrete, which was then processed through our proprietary mechanical crushing and sorting sequence.
Phase 1: CO2 Sequestration Protocol
The crushed aggregate concrete fines were exposed to concentrated flue gas streams. This process mineralizes gaseous carbon dioxide into solid calcium carbonate within the pores of the recycled concrete material, significantly boosting its baseline compressive strength.
Phase 2: Structural Mix Design
Our materials engineers calculated a custom mix design balancing the carbonated fine aggregate with low-clinker portland cement alternatives, ensuring the concrete cures perfectly in high-moisture civil engineering environments.
“By utilizing mineralized recycled aggregates, we didn't just divert thousands of tons from landfills—we hit our municipal green infrastructure milestones three years ahead of schedule." — Chief Resilience Officer, Metro Infrastructure Trust”
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