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<p>The rising demand for sustainable construction materials urges the search for alternatives to traditional cement to reduce carbon emissions. This study explores the development of Geopolymer Concrete (GPC) by partially replacing Ground Granulated Blast Furnace Slag (GGBS) with Cassava Peel Ash (CPA) at varying levels: 0%, 5%, 10%, 15%, and 20%. CPA, an underutilized agro-waste from India, offers potential as an eco-friendly precursor in geopolymer systems. Its incorporation in GPC introduces a novel method for producing high-performance, alkali-activated materials that cure under ambient conditions. The research evaluates workability, drying shrinkage, compressive strength, and tensile strength of GPC mixes, identifying 15% CPA as the optimal replacement level. Microstructural analysis was carried out on selected samples to understand the underlying mechanisms of strength and durability improvements. Results indicate that CPA enhances the fresh and hardened properties of GPC while promoting waste utilization. A sustainability assessment was also conducted, focusing on cost-efficiency, energy consumption, and CO₂ emissions. The analysis revealed that CPA-based GPC offers significant environmental and economic benefits. However, the dependence on sodium silicate and sodium hydroxide slightly limits eco-efficiency, pointing to the need for greener activator alternatives in future research. Overall, the study highlights the viability of CPA as a sustainable material in geopolymer concrete, offering solutions for waste management, carbon reduction, and affordable infrastructure. The findings support the transition toward greener construction practices by maximizing the value of agro-industrial by-products.</p>

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Utilization of Cassava Peel Ash as a Partial Replacement of Precursor Material for the GGBS Based Geopolymer Concrete

  • 期刊论文

  • 发表日期：

    2026年2月25日

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  • A. Chithambar Ganesh,
  • Mamilla Vijaya Kumar,
  • Hemadri Prasad Raju,
  • Kandukuri Anitha,
  • J. Ram Prashath

摘要

The rising demand for sustainable construction materials urges the search for alternatives to traditional cement to reduce carbon emissions. This study explores the development of Geopolymer Concrete (GPC) by partially replacing Ground Granulated Blast Furnace Slag (GGBS) with Cassava Peel Ash (CPA) at varying levels: 0%, 5%, 10%, 15%, and 20%. CPA, an underutilized agro-waste from India, offers potential as an eco-friendly precursor in geopolymer systems. Its incorporation in GPC introduces a novel method for producing high-performance, alkali-activated materials that cure under ambient conditions. The research evaluates workability, drying shrinkage, compressive strength, and tensile strength of GPC mixes, identifying 15% CPA as the optimal replacement level. Microstructural analysis was carried out on selected samples to understand the underlying mechanisms of strength and durability improvements. Results indicate that CPA enhances the fresh and hardened properties of GPC while promoting waste utilization. A sustainability assessment was also conducted, focusing on cost-efficiency, energy consumption, and CO₂ emissions. The analysis revealed that CPA-based GPC offers significant environmental and economic benefits. However, the dependence on sodium silicate and sodium hydroxide slightly limits eco-efficiency, pointing to the need for greener activator alternatives in future research. Overall, the study highlights the viability of CPA as a sustainable material in geopolymer concrete, offering solutions for waste management, carbon reduction, and affordable infrastructure. The findings support the transition toward greener construction practices by maximizing the value of agro-industrial by-products.