Evaluation of the reactivity of glass powder waste by the ASTM C1897-20 methodology
DOI:
https://doi.org/10.46421/entac.v20i1.6346Keywords:
Pozzolanic Reactivity, Glass Waste, Isothermal Calorimetry, ThermogravimetryAbstract
The use of supplementary cementitious materials (SCMs) presents significant potential in the cement industry, as there are environmental benefits from utilizing waste from other industries and reducing CO2 emissions from cement production. Thus, the objective of this study was to evaluate the reactivity of finely ground glass through physical and chemical characterization, as well as to apply the methodology presented by the ASTM C1897-20 standard. The results highlighted the high specific surface area and fineness of the material, which contribute to its chemical activity, confirmed by the presence of the amorphous halo in the mineralogical analysis, characteristic of the vitreous state. The isothermal calorimetry test revealed a heat release of 185.49 J/g during the hydration of the paste with glass, indicating pozzolanic activity comparable to the behavior of fly ash, with the consumption of calcium hydroxide identified by thermogravimetric analysis.
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