Shaina Kelly (Columbia University)

Waste-derived “Goldilocks” cement microstructures for co-enhancement of CO2 mineralization and composite strength

This project aims to sequester CO2 via mineralization in the built environment which will benefit New York State’s environmental and carbontech market development goals. The proposed “Goldilocks” cements project will identify the physical-chemical properties of waste-derived cement microstructures towards enhancing post-cure CO2 mineralization capacity while maintaining or enhancing concrete strength and durability. We will focus on varied fractions of WTE bottom and fly ash (combined ash). The co-PIs have found that WTE fly ash can be stabilized in cement-based systems, but that increasing cement replacement with WTE ash beyond 20% has led to decreases in compressive strength.

Funding Cycle: 2023-2024

Focus Area(s): Carbon Mineralization, Carbon Sequestration