Compressive Strength Properties of Fly Ash-Based Geopolymer Concrete

Abstract

This study intends to investigate experimentally the mechanical characteristics of the compressive strength and elastic modulus of concrete using 3 types of binder that are ordinary Portland cement, fly ash and physically milled fly ash. The test results show that the compressive strength and elastic modulus of the cement-zero concrete reached respectively 30.0 MPa and 19.1 GPa, and indicated that more than 90% of the strength was developed at early age. In addition, a comparison of the geopolymer concrete with ordinary concrete enabled to derive and suggest formulaeexpressing the elastic modulus in function of the compressive strength.