Effects of some industrial wastes on compression strength of geopolymer concrete

Abstract

ABSTRACT
The paper presents experimental research on the effects of some industrial wastes such as red mud (RM), steel slag (StS) and residue fluid catalytic cracking (RFCC) on the compressive strength of geopolymer concrete. This study also focuses on the influence of factors such as heat curing time, concentration of NaOH solution and the sodium silicate/sodium hydroxide ratio (SS/SH) on the compressive resistance of geopolymer concrete using industrial wastes. Experimental results show that red mud and steel slag, when partially replacing fly ash, reduces the compressive strength of geopolymer concrete. Meanwhile, RFCC has the opposite effect to increase the compressive capacity of the geopolymer material.

Keywords: Geopolymer concrete, Fly ash, Red mud, Steel slag, Residue fluid catalytic cracking (RFCC).