Article Per Year (5 Year)
p-Index From 2021 - 2026
0.562
P-Index
This Author published in this journals
All Journal Jurnal Ilmiah Teknik Sipil Open Access DRIVERset
Dewa Ayu Anggitha Pitaloka
Udayana University
Civil Engineering, Building, Construction & Architecture

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
THE EFFECT OF PRECURSOR-ACTIVATOR RATIO AND ACTIVATOR TYPE ON THE BULK DENSITY, COMPRESSIVE STRENGTH, AND MICROSTRUCTURE OF ABUAN PUMICE-BASED GEOPOLYMER BINDER Dewa Ayu Anggitha Pitaloka; I Made Alit Karyawan Salain; Ida Bagus Rai Widiarsa
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 2 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 2, September 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i02.p10

Abstract

This research developed a geopolymer binder based on pumice waste from Abuan Village, Kintamani, which is rich in silica and alumina, with a composition of SiO₂ 55.90%, Al₂O₃ 12.00%, CaO 6.25%, and other metals around 8.61%. The activators used are Na₂SiO₃ combined with either NaOH or KOH at a concentration of 12 M, with precursor-activator (P/A) ratios of 75%:25%, 70%:30%, and 65%:35% and an alkali ratio of NS/NH at 2:1. Cube samples 50 x 50 x 50 mm were analyzed to measure bulk density and compressive strength at 7, 14, and 28 days after being cured in an oven at 80°C for 72 hours. The bulk density test results for samples using NaOH showed an increase as the P/A ratio increased, but a decrease as the testing age increased. Then, the bulk density results for KOH samples showed the opposite trend both in terms of P/A ratio and age. The average compressive strength test for NaOH samples increased with the P/A ratio, and while it fluctuated by age, it continued to increase overall. The KOH samples followed a similar trend in P/A ratio but tended to decrease over time. This behavior is influenced by the chemical and physical properties of the activators used. Microstructural analysis was conducted using X-Ray Diffraction (X-RD) on the samples with the lowest and highest compressive strength. New minerals formed in NaOH samples, including Sodium Aluminosilicate, Albite, and Anorthite, while KOH samples showed formations of Dipotassium Sulfate (VI) – Alpha, Ht, Albite, and Cristobalite.
THE EFFECT OF PRECURSOR-ACTIVATOR RATIO AND ACTIVATOR TYPE ON THE BULK DENSITY, COMPRESSIVE STRENGTH, AND MICROSTRUCTURE OF ABUAN PUMICE-BASED GEOPOLYMER BINDER Dewa Ayu Anggitha Pitaloka; I Made Alit Karyawan Salain; Ida Bagus Rai Widiarsa
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 2 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 2, September 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i02.p10

Abstract

This research developed a geopolymer binder based on pumice waste from Abuan Village, Kintamani, which is rich in silica and alumina, with a composition of SiO₂ 55.90%, Al₂O₃ 12.00%, CaO 6.25%, and other metals around 8.61%. The activators used are Na₂SiO₃ combined with either NaOH or KOH at a concentration of 12 M, with precursor-activator (P/A) ratios of 75%:25%, 70%:30%, and 65%:35% and an alkali ratio of NS/NH at 2:1. Cube samples 50 x 50 x 50 mm were analyzed to measure bulk density and compressive strength at 7, 14, and 28 days after being cured in an oven at 80°C for 72 hours. The bulk density test results for samples using NaOH showed an increase as the P/A ratio increased, but a decrease as the testing age increased. Then, the bulk density results for KOH samples showed the opposite trend both in terms of P/A ratio and age. The average compressive strength test for NaOH samples increased with the P/A ratio, and while it fluctuated by age, it continued to increase overall. The KOH samples followed a similar trend in P/A ratio but tended to decrease over time. This behavior is influenced by the chemical and physical properties of the activators used. Microstructural analysis was conducted using X-Ray Diffraction (X-RD) on the samples with the lowest and highest compressive strength. New minerals formed in NaOH samples, including Sodium Aluminosilicate, Albite, and Anorthite, while KOH samples showed formations of Dipotassium Sulfate (VI) – Alpha, Ht, Albite, and Cristobalite.
Co-Authors I Made Alit Karyawan Salain Ida Bagus Rai Widiarsa