Compressive Strength of Palm Ash Geopolymer Mortar against High Temperatures

Antonius, Setiyawan P., Hidayat A., Rismalinda, Edison B., Syarif H.A.

Abstract

Palm ash geopolymer mortar is an alternative material that can be used in construction materials. This study to analyze the physical characteristics of palm ash geopolymer mortar against the effects of high temperatures. The mortar sample will be designed with a geopolymer mixture consisting of sand, palm ash, alkaline activator solution (NaOH and Na2SiO3) as an adhesive paste to replace cement. The geopolymer composition will take into account the effect of palm ash with an alkaline activator solution, so the optimal composition will be a sample size of 5x5x5 cm. Then the sample is put into the oven furnace to give high temperature effect on the mortar with temperature variations of 100°C, 200°C, and 300°C, and a mixture of 10%, 20%, 30% portland composite cement substitution by weight of palm ash. The results on the temperature variation of the maximum value of compressive strength occurred at 200°C with 20% cement variation and the minimum compressive strength results occurred at 100°C for 10% cement variation. The effect of high temperature will have an effect on visually different physical characteristics. These resulted in the composition of the palm ash geopolymer components which would affect high temperatures which resulted in changes in the physical characteristics of the palm ash geopolymer mortar.

Journal
Iop Conference Series Earth and Environmental Science
Page Range
Publication date
2024
Total citations
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