STRENGTH AND DURABILITY EVALUATION OF FLY ASH-BASED GEOPOLYMER CONCRETE

Abstract

Concrete is the one of the most widely used construction material throughout the world. Hence it has been labelled as the backbone to the infrastructure development of nation. To fulfill the requirement of industries here we have replaced partially the constituent materials of concrete by using waste material. It was carried out to evaluate the properties of concrete by replacing the cement by eggshell powder and silica fume by varying the percentage of 2.5%, 5%, 7.5%, 10% eggshell and silica fume. A comparison of partially replaced concrete with conventional concrete was also include into the study. Comparison of weights of natural concrete with partially replaced concrete after 7, 14 and 28 days of curing was included. The mix design arrived for an M25 mix. As I know the carbon dioxide produced by cement industry causes environmental pollution and global warming. In 1000 Kg of cement manufacturing process approximately 900Kg of carbon dioxide is emitted. In order to reduce the cement production into atmosphere waste by products are used admixture in study so that environmental pollution and natural resources consumption is reduced. In India, eggshell powder which in calcium and silica fume is thrown away as waste. In the present study, use of eggshell and silica fume as a partial replacement of cement and various properties like workability, compressive strength and spilt tensile strength was determined. Keep silica fume and eggshell percentage equal and finding strength of blocks.