Abstract
This review paper aims to present fundamental aspects of geopolymer developments and science to emphasize their suitability for high-temperature exposure. Beginning with a comparison of the thermal properties of OPC and geopolymer, the analysis then investigates the character and occurrence of aggregates and supplementary phases. Characteristics essential for evaluating geopolymer thermal properties are thermal expansion, thermal conductivity, strength retention, explosive spalling along with microstructural characteristics such as phase stability, weight changes (dehydration/rehydration), morphology changes, and thermochemical properties were analyzed much in detail.
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