International Journal For Multidisciplinary Research

E-ISSN: 2582-2160   •   Impact Factor: 9.24

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Assessment Of Sustainability Aspects Of Recycled Aggregate With Supplementary Cementitious Materials

Author(s) DANISH MAJEED, AJAY VIKRAM
Country India
Abstract The sustainability of engineering products has evolved from being optional to an essential requirement. This research investigates the effects of using 20% fly ash (FA) and or 12% silica fume (SF) as replacements for cement in the production of recycled aggregate concrete. The study was carried out in two phases: the evaluation phase and the analysis phase. During the evaluation
phase, laboratory tests and data collection were conducted to assess the mechanical properties, environmental impact, and production costs of ten different concrete mixtures. In the analysis phase, three multi-criteria decision-making methods (EDAS, VIKOR, and TOPSIS) were applied to determine the most effective and sustainable concrete mixture. The main findings revealed
that using up to 70% recycled concrete aggregate combined with an optimal mixture of 20% FA and 12% SF results in high quality, eco-friendly, and cost-efficient concrete. This study evaluates the environmental effects of incorporating supplementary cementitious materials (SCMs) .It also examines the structural performance of using construction and demolition waste as a partial replacement for natural aggregates in concrete, focusing on compressive strength and durability. Findings indicate that the inclusion of SCMs and ENMs lowers the global warming impact (GWI) and cumulative energy demand (CED) of concrete production without compromising strength and durability. In some instances, it even improves both durability and strength.
However, there is a tradeoff between durability and strength enhancement with the use of reengineered by-products, which leads to an increase in GWI and CED. Although they yield nearly the same GWI and CED as ordinary Portland cement concrete, optimizing the use of recycled aggregates as a partial substitute for natural aggregates can reduce the reliance on virgin materials.
Keywords Supplementary cementitious materials, Recycled aggregate; building material, Fly Ash, sustainable concrete, Silica fume, EDAS, VIKOR, TOPSIS
Field Engineering
Published In Volume 7, Issue 1, January-February 2025
Published On 2025-01-11
Cite This Assessment Of Sustainability Aspects Of Recycled Aggregate With Supplementary Cementitious Materials - DANISH MAJEED, AJAY VIKRAM - IJFMR Volume 7, Issue 1, January-February 2025. DOI 10.36948/ijfmr.2025.v07i01.34675
DOI https://doi.org/10.36948/ijfmr.2025.v07i01.34675
Short DOI https://doi.org/g82hfb
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E-ISSN 2582-2160
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