A Study On Mechanical Properties Of Fly Ash Based Geopolymer Concrete For Different Mix Proportions

Abstract

Present days in research field the geopolymer is getting more prominent than cement. In the research area from past 30 years the geopolymer is getting major role then cement. Some researcher and their studies conformed that the geopolymer is getting good engineering properties like mechanical properties and durability properties compared to conventional concrete. Geopolymer is getting good mechanical properties like compressive strength, flexural strength, split tensile strength and modulus of elasticity. In present study the study includes total aggregate content, proportion of fine aggregate to total aggregate content, proportion of alkali to fly ash, proportion of sodium silicate to sodium hydroxide, making of sodium hydroxide solution, molarity of sodium hydroxide, curing at different curing conditions like oven temperature curing, air curing, curing period like 7 days and 28 days. Engineering properties like compressive strength, flexural strength, split tensile strength and modulus of elasticity of geopolymer and OPC concrete were found. The 7 days compressive strength at 12M of NaOH at 90⁰c temperature curing is getting maximum strength; at 28 days, the 12M of NaOH at 90⁰c temperature curing is getting maximum strength.