The Effect of Adding Perlite to Unfired and Fired Geopolymer Concrete Made from Fly Ash on Pore Distribution and Compressive Strength
DOI:
https://doi.org/10.21009/SPEKTRA.112.02Keywords:
geopolymer, compressive strengh, pore distribution, passive fire protectionAbstract
This study focuses on the importance of sustainability and environmental protection in building construction. Materials used should safe and free of toxins, while also adhering to circular construction principles. This study seek materials with appropriate structure and composition, unifying features, insulation, and environmentally friendly properties. In this study, five compositions of fly ash and perlite-based concrete geopolymer have been burned for 900°C for 2 hours. The distribution of pore decreases for both unburned and burned concrete geopolymer is observed. One of the strength of concrete geopolymer indicator is compressive strength. Both of the results of compressive strength and the pore distribution are conducted through experimental study. Bet method has been used to measure pore volume of it. UTM machine has been used to calculate compressive strength. It is found that the addition of perlite to fly ash-based geopolymer concrete will increase the pore distribution value of unburned geopolymer concrete. On the other hand, the summation of perlite to fly ash-based geopolymer concrete will decrease the pore distribution value of burned geopolymer concrete. The highest compressive strength value are in 25% perlite addition. This work advances knowledge of the relationship between fly ash and perlite geopolymer concrete's pore distribution and compressive strength under both unfired and fired situations, which can serve as a foundation for material selection in passive fire protection design.
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