Sachin Gowda, M. K., Gupta, A., & Havanagi, V. G. (2025). Pavements through waste valorization: MSWI Bottom ash as viable fine aggregate alternative. In L. Eberhardsteiner, B. Hofko, & R. Blab (Eds.), Advances in Materials and Pavement Performance Prediction IV : Contributions to the 4th International Conference on Advances in Materials and Pavement Performance Prediction (AM3P 2025), 7-9 May 2025, Vienna, Austria (pp. 442–445). TU Wien, E230-03 Road Engineering. https://doi.org/10.34726/10639
Advances in Materials and Pavement Performance Prediction IV : Contributions to the 4th International Conference on Advances in Materials and Pavement Performance Prediction (AM3P 2025), 7-9 May 2025, Vienna, Austria
Despite growing interest in using Municipal Solid Waste Incineration Bottom Ash (MSWI-BA) in road construction, understanding its performance and environmental impact is crucial. With natural aggregates becoming scarce and the need for sustainable waste management increasing, this study examined replacing fine aggregates in Bituminous Concrete Grade-2 (BC-II) mixes with MSWI-BA at levels from 0-50%. Results showed that while MSWI-BA requires more binder due to its porosity, up to 20% replacement improved Marshall stability, stiffness, and moisture resistance. The 20% MSWI-BA mix achieved optimal performance, meeting Ministry of Road Transport & Highways (MoRT&H) specifications. Though higher replacement levels (up to 30%) showed slight increases in rutting susceptibility, they still performed satisfactorily. The Toxicity Characteristic Leaching Procedure (TCLP) confirmed the MSWI-BA was non-hazardous and effectively encapsulated. Thus, up to 20% MSWI-BA replacement in BC-II mixes is recommended for a balance of performance and environmental benefits.
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Research Areas:
Modeling and Simulation: 35% Structure-Property Relationsship: 30% Computational System Design: 35%
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