The influence of low alkaline activator on the compressive strength and workability of geopolymer concrete

Abstract This paper presents the results of research on geopolymer concrete using a reasonably low alkaline activator. The key objective concerning this is to investigate whether activator still qualified produce compressive strength that fulfills structural requirements. experimental program carried out by making specimens, where variables reviewed represented amount (4% and 5%), ratio fly ash (AAS/FA) was 0.35, 0.4, 0.5, 0.6. treatment temperatures specimens were room temperature (33°C) 60°C. test have shown meets requirements as material (i.e. Indonesian Concrete Code). weight resulting specimen included in category normal concrete. workability with tends be better if AAS/FA also increases, but decrease.