Experimental Investigation on Strength and Durability Properties of M25 Grade Concrete Using Fly Ash, Rice Husk Ash and Egg Shell Powder.

Abstract: The purpose of the study is to assess the combined impact of eggshell powder (ESP) and fly ash (Class F) and rice husk ash (RHA) as additional cementitious materials in concrete applications. Fly ash is widely used in concrete works due to its ability to improve mortar and concrete properties. The usage of eggshells, a biodegradable waste product from bakeries, fast food establishments, and chick hatcheries, is also examined in this study. It assesses the fly ash-f, RHA, and ESP blended cements' chemical makeup, physical characteristics, consistency, beginning and final setting times, pH level, and compressive strength. The strength property of ESP blended cement mortars is also evaluated. The study also compares the strength properties of ESP concrete mixes and a control mix. The study also assesses the coefficient of water absorption, sorptivity, resistance to chloride ion penetration, and diffusion coefficient. The findings will help determine how much fly ash and rice husk ash should be replaced in concrete. Water permeability decreased by around 56.8%. A drop in chlorine penetration of about 75.55 percent. A decrease in chloride diffusion of about 49% For 28, 56, and 90 days in an acid solution, the rate of deterioration of RA0 cement concrete (control samples) exposed to acid resistance (HCl & H2 SO4) and sulfate resistance was significantly higher than that of RA4 cement concrete (15FA15RHA5ESP). A decrease in corrosion of almost 88.72% (Good corrosion inhabiting)