Durability Scrutiny and Performance Prediction of Geopolymer Concrete Containing Bespoke Activator and Superplasticizer

Abstract:

This study relates to the development of geopolymer concrete (GPC) and empirical models which can be used to predict strength and durability under different curing temperatures. The binders and alkaline activators used for the GPC production were characterized to determine their physical and chemical properties. The partial and pure geopolymer concrete samples were produced. The partial replacement of Geopolymer concrete (GPC) samples was done with cement at varying percentages of 0, 2.5, 5, 7.5, 10, 12.5, 15, 17.5 and 20% to determine the optimum cement stabilization. Fourier transform infrared spectroscopy (FTIR) results show key absorbance level at the zone between 950.1 and 3250.12 cm⁻¹. It means that enhancement of the laboratory-produced (bespoke) superplasticizer enhanced the performance of GPC by reducing the viscosity and enriching the flow behaviour of the concrete. The optimal geopolymer product showed substantial strength and durability enhancements at 70°C followed by declining values at temperatures above 70°C, indicating material deterioration. A positive correlation between hot-state temperature, strength and durability properties was also established. Furthermore, scrutiny of the model shows that overall dataset points for training and test sets are clustered close to the diagonal line, signifying that the model provides precise estimation of the strength and durability features. .

• Periodical: Materials Science Forum (Volume 1161)
• Pages: 111-122
• DOI: https://doi.org/10.4028/p-vQ4kZI
• Online since: October 2025
• Authors: Lucia Omolayo Agashua*, Chinwuba Arum, Bamitale Dorcas Oluyemi-Ayibiowu, Catherine Mayowa Ikumapayi
• Keywords: Absorbance, Durability, Forecasting, Hot-Temperature, Synthesis

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