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Geopolymer Concrete Incorporating Industrial Waste: A Review of Rice Husk Ash, Slag, Metakaolin, and Fly Ash for Enhanced Compressive Strength

Kshama Lovanshi, Dr. Harsh Rathore

Abstract


This review paper explores the potential of industrial waste materials—Rice Husk Ash (RHA), slag, metakaolin, and fly ash—as key components in geopolymer concrete (GPC) formulations. The study investigates various aspects of geopolymer production, focusing on the role of these materials in enhancing compressive strength and overall performance. Research by Yun Yong Kim et al. (2014) and Sturm et al. (2016) highlights the efficiency of RHA in geopolymerization, with notable strength improvements. Slag-based studies demonstrate the effectiveness of Ground Granulated Blast Furnace Slag (GGBFS) in improving mechanical properties. Metakaolin has been shown to enhance GPC properties through its chemical stability, while fly ash, especially Class F, proves crucial in optimizing the polymerization process. Additionally, different alkali activators and their ratios, such as sodium silicate/NaOH, play a significant role in determining strength outcomes. This paper aims to synthesize these findings, emphasizing the environmental and structural benefits of utilizing industrial by-products in GPC for sustainable construction solutions.


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References


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