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<p>Around the globe, cement production and its usage in developmental projects has increased carbon dioxide emissions, necessitating the development and adoption of eco-friendly substitute materials and technologies. Geopolymer concrete is a sustainable and effective alternative to traditional cement-based concrete that can be produced using different industrial waste products. A ternary blended Self-Compacting Geopolymer Concrete (SCGPC) made using 60% Fly Ash, 30% Ground Granulated Blast Furnace Slag (GGBFS), and 10% Waste Ceramic Powder (WCP) is used as precursors developed to ensure compliance to EFNARC standards. This study uses the optimized mix based on strength and constituents to evaluate its performance under high temperatures. The developed mix is cured at ambient temperatures and oven conditions at 80<sup>o</sup>C for 48&#xa0;h. The oven curing produces concrete with more compressive strength than ambient curing. This mix was exposed to thermal variations of 150<sup>o</sup>C, 300<sup>o</sup>C, 450<sup>o</sup>C, 600<sup>o</sup>C and 750<sup>o</sup>C for different periods of 0.5, 1.0, 1.5 and 2.0&#xa0;h.The performance of mix with these thermal variations over different periods is presented in this study. At an exposure of 150<sup>o</sup>C for 1.0&#xa0;h, the mechanical, microstructural, and durability properties significantly improved when compared to the oven-cured specimen. However, these properties began to deteriorate as the exposure temperature exceeded 150&#xa0;°C.</p>

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Performance of self-compacting geopolymer concrete incorporating fly ash, Ground Granulated Blast Furnace Slag, and waste ceramic powder under exposure to high temperatures

  • 期刊论文

  • 发表日期：

    2025年6月7日

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  • Vinay Kumar,
  • Pardeep Kumar

摘要

Around the globe, cement production and its usage in developmental projects has increased carbon dioxide emissions, necessitating the development and adoption of eco-friendly substitute materials and technologies. Geopolymer concrete is a sustainable and effective alternative to traditional cement-based concrete that can be produced using different industrial waste products. A ternary blended Self-Compacting Geopolymer Concrete (SCGPC) made using 60% Fly Ash, 30% Ground Granulated Blast Furnace Slag (GGBFS), and 10% Waste Ceramic Powder (WCP) is used as precursors developed to ensure compliance to EFNARC standards. This study uses the optimized mix based on strength and constituents to evaluate its performance under high temperatures. The developed mix is cured at ambient temperatures and oven conditions at 80oC for 48 h. The oven curing produces concrete with more compressive strength than ambient curing. This mix was exposed to thermal variations of 150oC, 300oC, 450oC, 600oC and 750oC for different periods of 0.5, 1.0, 1.5 and 2.0 h.The performance of mix with these thermal variations over different periods is presented in this study. At an exposure of 150oC for 1.0 h, the mechanical, microstructural, and durability properties significantly improved when compared to the oven-cured specimen. However, these properties began to deteriorate as the exposure temperature exceeded 150 °C.