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The post-heat durability properties of geopolymer mortars are investigated in this work in relation to binder composition and alkali activator parameters. Ground granulated blast furnace slag (GGBS) is the principal precursor employed in this work. To improve the rheological properties of the material, silica fume, and dolomite are added to augment the total amount which not exceeds thirty percent. Examining several sodium hydroxide molarities—including 8, 10, 12, and 14 M—helps one to ascertain the ideal thermal performance of the material. The results show when activated with a sodium hydroxide concentration of 14 M, a mixture of 10% waste dolomite powder and 20% silica fume shows increased thermal stability and the capacity to maintain residual power. The results underline the possibilities of customized binder formulas and activator solutions in the manufacturing of heat-resistant high-performance geopolymer mortars.

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Influence of Binders and Alkali Activator Solutions on the Residual Properties of Geopolymer Mortars Exposed to Elevated Temperatures

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  • 发表日期：

    2026年

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  • M. Sathyanarayanan,
  • D. Brindha

摘要

The post-heat durability properties of geopolymer mortars are investigated in this work in relation to binder composition and alkali activator parameters. Ground granulated blast furnace slag (GGBS) is the principal precursor employed in this work. To improve the rheological properties of the material, silica fume, and dolomite are added to augment the total amount which not exceeds thirty percent. Examining several sodium hydroxide molarities—including 8, 10, 12, and 14 M—helps one to ascertain the ideal thermal performance of the material. The results show when activated with a sodium hydroxide concentration of 14 M, a mixture of 10% waste dolomite powder and 20% silica fume shows increased thermal stability and the capacity to maintain residual power. The results underline the possibilities of customized binder formulas and activator solutions in the manufacturing of heat-resistant high-performance geopolymer mortars.