PENGARUH VARIASI WAKTU DAN SUHU PERAWATAN TERHADAP MORTAR GEOPOLIMER DENGAN ABU TERBANG DAN NaOH 12 MOLAR SEBAGAI BAHAN DASAR
| Main Author: | Irhab, Hafizh Muktabar |
|---|---|
| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Rekayasa Teknik Sipil
, 2022
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| Online Access: |
https://ejournal.unesa.ac.id/index.php/rekayasa-teknik-sipil/article/view/49159 https://ejournal.unesa.ac.id/index.php/rekayasa-teknik-sipil/article/view/49159/40921 |
Daftar Isi:
- Portland Cement (PC) contributes about 7-10% of total Carbon Dioxide (CO2) globally. Many innovationhave been done to reduce or replace cement as a building material continues to be developed. Fly ash isone of the innovation materials used to replace cement, but fly ash don’t have the ability to bind thematerials, just like cement that requires water to be the activators. Fly Ash also requires activators in theform of Sodium Hydroxide (NaOH) and Sodium Silicate (Na2SiO3). Geopolimer curing requires hightemperatures in order to speed up the polymerization reactions during the hardening process (Wardhonoet al. 2012). This research using NaOH 12 Molar geopolimer mortar with temperature curing of 60°C,80°C, 100°C and 3 hours, 6 hours, and 24 hours in each temprature. The results showed that thetemperature curing was able to increase the compressive strength of the geopolimer mortar. The highestcompressive strength is produced at 100°C for 6 hours heat curing time. The result of compressive strenghtin each days (7, 14, 28) at 100°C in 6 hours curing time are 49.93 MPa, 40.73 MPa, 32.21 MPa. theseresult shown that heat curing method can increase the compressive strength at days 7, but it will decreasethe compressive strength of the mortar as the mortar ages.Keywords: Fly Ash, Mortar, Heat Curing, Compressive Strength.