STRENGTH AND DURABILITY CHARACTERISTICS OF FLY ASH AND SLAG BASED GEOPOLYMER CONCRETE

The paper explore the feasibility of using fly ash and slag based geopolymer concrete and to investigate their strength and durability characterstics. Geopolymer concrete was developed using fly ash and GGBS in different percentages and the strength and durability characteristics of this new concrete were investigated in order to explain its utilization potential. Studies are being systematically conducted on these new materials with regards to both strength and durability characteristics. In the present investigation, the GPCs were subjected to attack by sulphuric acid for understanding durability aspects of the new concretes. In present research work, fly ash and slag based geopolymer was used as the binder, instead of Portland or any other hydraulic cement paste, to produce concrete. The fly ash-slag based geopolymer paste binds the loose coarse aggregates, fine aggregates and other unreacted materials together to form the geopolymer concrete, with or without the presence of admixtures.