Using CO2-Embedded Coal and MSWI Fly Ashes as Sustainable Alternative SCMs: A Feasibility Study
This study explores using carbonated coal fly ash (CCFA) and municipal solid waste incineration (MSWI) fly ash (CMFA) as supplementary cementitious materials. Carbonation treatment typically increase surface area and enable remarkable CO₂ uptake, with CMFA showing improved reactivity compared to uncarbonated ashes. Compressive strength tests revealed that CMFA outperformed uncarbonated MFA, while CCFA-incorporated mortar showed lower strength than uncarbonated counterpart. All blends consisting of Portland-limestone cement and carbonated ashes appear to meet the requirements of ASTM C1157. It suggests carbonated coal and MSWI fly ashes are viable alternative SCMs for sustainable concrete production.
Authors
- Wenyu Liao (ORCID: https://orcid.org/0000-0001-7941-2902)
- Muhammad Rizwan Javed (ORCID: https://orcid.org/0000-0003-1079-8717)
- Hongyan Ma (ORCID: https://orcid.org/0000-0001-8066-9238)
Publication Details
- Published
- 2025-09-27
- DOI
- https://doi.org/10.5703/1288284317992
- Primary Topic
- Recycled Aggregate Concrete Performance
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- Division of Chemical, Bioengineering, Environmental, and Transport Systems