Ghosh, A., Sachdeva, A., Sk, S. I., Ransinchung, G. D. R. N., & Kumar, P. (2025). Recycling RAP in geopolymer concrete for sustainable pavement solutions. 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. 390–393). TU Wien, E230-03 Road Engineering. https://doi.org/10.34726/10576
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
This study investigates the potential of using coarse and fine Recycled Asphalt Pavement (RAP) fractions as substitutes for natural aggregates in paving-grade geopolymer concrete (GPC). Findings highlight that higher RAP content significantly impacts strength and durability, necessitating limitations on the proportion of RAP used. An optimal mix with 50% coarse RAP achieved a flexural strength of 4.72 MPa after 7 days of ambient curing while reducing carbon emissions by 56.16% compared to traditional concrete. Furthermore, fine RAP mixes exhibited a higher surface abrasion loss, with a maximum of 0.288 mm, indicating that coarser RAP fractions are more suitable for designing Pavement Quality Concrete (PQC). Furthermore, fine RAP mixes exhibited higher loss in surface abrasion depicting a maximum of 0.288mm suggesting the potential recycling of coarser RAP fractions for rigid pavement applications.
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Forschungsschwerpunkte:
Modeling and Simulation: 35% Structure-Property Relationsship: 30% Computational System Design: 35%
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