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<p>In this study, Ground Granulated Blast furnace Slag (GGBS) was utilized as the main binder to examine mechanical characteristics and longevity of geopolymer concrete (GPC). In order to improve strength and durability, a variety of combinations were examined using various fiber reinforcements, such as steel, glass, and nylon fibers. Axial, flexural strengths and split tensile were assessed at 7, 14, and 28 day curing times. To evaluate long-term durability, test for water absorption were also carried out. Results indicate that GPC with 100% GGBS exhibits superior strength compared to conventional concrete. Elevated temperature curing (60°C) accelerates early strength gain but has a limited effect on long-term performance. Fiber reinforcement significantly improves mechanical properties, with steel and glass fibers (1.5%–2%) enhancing axial strength beyond 65 MPa. In terms of durability, fiber-reinforced mixes showed reduced water absorption, with M15 (2% steel fibers). Overall, the study concludes that a geopolymer mix with 100% GGBS and 1.5%–2% steel or glass fibers provides optimal performance in terms of strength, durability, making it viable alternative to conventional concrete for sustainable and long-lasting construction.</p>

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Next-Gen Geopolymer Concrete: Optimizing Strength and Durability with Fibers

  • 期刊论文

  • 发表日期：

    2025年10月15日

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  • R. Jeron,
  • Y. Stalin Jose

摘要

In this study, Ground Granulated Blast furnace Slag (GGBS) was utilized as the main binder to examine mechanical characteristics and longevity of geopolymer concrete (GPC). In order to improve strength and durability, a variety of combinations were examined using various fiber reinforcements, such as steel, glass, and nylon fibers. Axial, flexural strengths and split tensile were assessed at 7, 14, and 28 day curing times. To evaluate long-term durability, test for water absorption were also carried out. Results indicate that GPC with 100% GGBS exhibits superior strength compared to conventional concrete. Elevated temperature curing (60°C) accelerates early strength gain but has a limited effect on long-term performance. Fiber reinforcement significantly improves mechanical properties, with steel and glass fibers (1.5%–2%) enhancing axial strength beyond 65 MPa. In terms of durability, fiber-reinforced mixes showed reduced water absorption, with M15 (2% steel fibers). Overall, the study concludes that a geopolymer mix with 100% GGBS and 1.5%–2% steel or glass fibers provides optimal performance in terms of strength, durability, making it viable alternative to conventional concrete for sustainable and long-lasting construction.