Date of Publication :7th October 2024

Abstract:Geopolymer mortar is a type of cementitious material that is made from fly ash & GGBS as an industrial waste product, with an alkaline activator. Fly ash is a pozzolanic material, which means that it can react with an alkaline solution to form a hard, cementitious material. Geopolymer mortar has several advantages over traditional cement mortar, including its high strength, durability, and low environmental impact. This study investigated the effects of fly ash, GGBFS and alkaline activator compositions on the strength of fly ash and GGBFS-based geopolymer mortar. The results showed that the use of high-calcium fly ash resulted in higher-strength mortars than the use of low-calcium fly ash. The use of a sodium hydroxide/sodium silicate activator also resulted in higher strength mortars than the use of a sodium hydroxide/potassium hydroxide activator. The highest-strength mortars were produced using high-calcium fly ash and a sodium hydroxide/sodium silicate activator. In this study, the mortars had a compressive strength of ov er 82 MPa, which is comparable to the strength of traditional Portland cement mortars. The results of this study suggest that high-strength fly ash and GGBFS-based geopolymer mortars can be produced using a variety of fly ash types, GGBFS and alkaline activator compositions. These mortars have the potential to be used in a variety of applications, including structural, high-performance, and durable applications.

Reference :