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<p>One-part fly ash-based geopolymers emerged as a promising alternative to ordinary Portland cement due to their cement-like handling, water-only activation, and reduced environmental impact. A systematic review and analysis is carried out to study the effect of fly ash-based one-part geopolymer with and without additives in terms of physical properties, fresh state behavior (workability, initial and final setting time), hardened state behavior (compressive strength, split tensile strength, flexural strength and modulus of elasticity), durability performance (acid resistance, resistance to temperature, frost resistance, water absorption, shrinkage, carbonation, creep, chloride ingress and steel corrosion) and microstructural analysis (SEM, XRD, FTIR, and NMR). In contrast to existing reviews that largely focus on mix design approaches or isolated performance indicators, the present study provides an integrated evaluation across multiple performance domains, enabling direct comparison and interpretation of interrelated material responses. Furthermore, strength-based empirical relationships correlating compressive strength with split tensile strength, flexural strength, and elastic modulus are developed using consolidated data from multiple studies and benchmarked against international design codes.</p>

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A critical review and analysis of fly ash-based one-part geopolymer

  • 期刊论文

  • 发表日期：

    2026年4月22日

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  • Pushpender Kumar,
  • Govind Gaurav,
  • Needhi Kotoky,
  • Shivang Shekhar

摘要

One-part fly ash-based geopolymers emerged as a promising alternative to ordinary Portland cement due to their cement-like handling, water-only activation, and reduced environmental impact. A systematic review and analysis is carried out to study the effect of fly ash-based one-part geopolymer with and without additives in terms of physical properties, fresh state behavior (workability, initial and final setting time), hardened state behavior (compressive strength, split tensile strength, flexural strength and modulus of elasticity), durability performance (acid resistance, resistance to temperature, frost resistance, water absorption, shrinkage, carbonation, creep, chloride ingress and steel corrosion) and microstructural analysis (SEM, XRD, FTIR, and NMR). In contrast to existing reviews that largely focus on mix design approaches or isolated performance indicators, the present study provides an integrated evaluation across multiple performance domains, enabling direct comparison and interpretation of interrelated material responses. Furthermore, strength-based empirical relationships correlating compressive strength with split tensile strength, flexural strength, and elastic modulus are developed using consolidated data from multiple studies and benchmarked against international design codes.