The effect of adding perlite to unfired and fired geopolymer concrete made from fly ash and perlite on pore distribution and compressive strength
F M Farida V T Fauziastuti T Bambang A K Yusmaniar and M F Fikri

Universitas Negeri Jakarta

Abstract

Creep occurs in burned material
It made a decrease in yield strength and elasticity modulus
In this study five compositions of fly ash and perlite-based concrete geopolymer have been burned for 900 degree Celcius 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

Keywords: geopolymer compressive strength pore distribution passive fire protection

Topic: Material Physics