Sustainable application of waste residue from coal gasification process in low-carbon cement: multiscale evaluation, hydration behavior, mechanical performance, and environmental assessment

Key Points

• Low-carbon cement shows enhanced mechanical performance with the incorporation of coal gasification waste residue, which supports sustainable practices.
• Mechanical performance metrics indicate significant improvements, achieving strengths up to 30 MPa within 28 days.
• Analysis of hydration behavior reveals complex interactions that enhance cement composition, resulting in lower carbon footprints.
• Environmental assessment suggests potential reductions in emissions and waste management costs with sustainable cement solutions.