1Research scholar, Department of Civil Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai 602105. Email: rajenderpatels@gmail.com
2Assistant Professor, Department of Civil Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai 602105. Email: dineshkumarm.sse@saveetha.com
The valorization of municipal solid waste incineration bottom ash (MSWI-BA) presents a sustainable solution to reduce natural aggregate consumption and mitigate landfill dependency. This study evaluates the performance of Portland cement concrete incorporating processed MSWI-BA as a multifunctional fine aggregate (M-Agg). Mechanical testing, SEM–EDS, XRD, and pore structure analysis were conducted to correlate performance with microstructural changes. Results show that a 20% replacement level delivers optimal performance, achieving a notable improvement in compressive strength compared to the control. This enhancement is governed by synergistic microstructural evolution, where M-Agg acts as a micro-filler to refine pore structure and simultaneously participates in pozzolanic reactions that generate secondary C–S–H, strengthening the interfacial transition zone. Leaching assessments confirmed regulatory compliance, demonstrating environmental safety. Overall, the study establishes processed MSWI-BA as a viable, performance-enhancing, and sustainable multifunctional component for concrete.
Keywords: MSWI bottom ash, multifunctional aggregate, microstructural evolution, sustainable concrete, pozzolanic activity.
How to cite this article: Reddy MR, Kumar MD. Mechanical Performance and Microstructural Evolution of Portland Cement Concrete With MSWI Bottom Ash As A Multifunctional Component. Int J Drug Deliv Technol. 2026;16(3): 364-374. DOI: 10.25258/ijddt.16.3.41
Source of support: Nil.
Conflict of interest: None