Coupling limestone powder with CFSH/PCE to enhance supersulfated cement: Hydration, microstructure and carbonation resistance.

Coupling limestone powder with CFSH/PCE significantly boosts early and long-term strength in supersulfated cement, with up to 833% increase at 12 hours.

• Why it matters: Enhancing SSC's performance and economic viability is crucial due to limited high-quality slag and slow early hydration, which hinder broader application.
• What they did: The study incorporated limestone powder at 5-15% and 1.0% CFSH/PCE into SSC, analyzing effects on hydration, microstructure, and carbonation resistance through detailed experiments.
• The result: The combined use produced a synergistic effect, improving strength, refining pore structure, and reducing carbonation, with L10-F showing only 14.3% strength loss after 28 days of accelerated carbonation.