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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Rekayasa Sipil
Ikrammullah, Muhammad
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Civil Engineering, Building, Construction & Architecture Engineering

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Studi Parametrik Mortar Geopolimer Hybrid Abu Sawit (Palm Oil Fuel Ash/POFA) Yanuari, Ramadhan; Ikrammullah, Muhammad; Septari, Dinda; Wijaya, Miguel Felix; Olivia, Monita
Rekayasa Sipil Vol 14, No 2 (2020)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2020.014.02.1

Abstract

In this study, the Palm Oil Fuel Ash (POFA) was used as a raw material for making geopolymer mortars that uses a combination of sodium hydroxide (NaOH) and sodium silicate (Na2SiO3). The purpose of this study was to determine the effect of various parameters on the compressive strength of mortars. The parameters involved were namely modulus of activator ratio (Ms 1-3), the molarity of NaOH (10-16M), curing temperature (28-110ºC), type of POFA particle processing (oven-dried, passed the #200 sieve, burned in a brick kiln, burned at 800ºC), rest periods of 3 and 5 days. Based on the parametric study, it was found the optimum mixture with the highest compressive strength consisted of NaOH 14M, Ms ratio of 2.5, curing temperature of 100OC, a rest period of 5 days, particles sieved using #200 sieve and had 15% PCC content. 
Kuat Tekan Dan Porositas Beton Geopolimer Hybrid Faba Dengan Penambahan Semen PCC Di Air Gambut Ikrammullah, Muhammad; Olivia, Monita; Wibisono, Gunawan
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Geopolymer hybrid concrete is formed from materials containing alumina and activated silica using an alkali activator with the addition of portland cement to produce heat of hydration, so as geopolymer concrete treatment can be carried out at room temperature. The purpose of this research to knowing durability of geopolymer hybrid FABA concrete with the addition of PCC after exposed to peat water for 0, 7, and 28 days. Control concrete with a design quality of 20 MPa. The activator solution used NaOH with molarty 12M and Na2SiO3 with a modulus ratio (Ms) of 2.5. The percentage added of PCC cement is 15% by weight of FABA. Results of the test showed that the compressive strength of PCC concrete increased 8.82%, while geopolymer hybrid concrete increased 6.88% until the age of 28 days cured in peat water. Moreover, the porosity of PCC concrete of PCC concrete decreased 3.01%, while geopolymer hybrid an increase 6.08% until the age of 28 days cured in peat water.Keyword: peat water, geopolymer hybrid, concrete, compressive strength, porosity, fly ash and bottom ash.
Co-Authors Gunawan Wibisono Monita Olivia Septari, Dinda Wijaya, Miguel Felix Yanuari, Ramadhan