Durability properties of copper slag and fly ash based concrete for a sustainable environment

Abstract

This study was examined the effect of Copper Slag (CS) as a replacement of fine aggregates in various percentages (0–100%) and Fly Ash (FA) as partial replacement of Cement (0–30%) on durability behavior such as resistance against Corrosion, Abrasion, and Carbonation. There are twenty-four concrete mixes are prepared for M30 grade of concrete with a constant water-cement ratio as 0.4. These mixes were tested for the durability test and the results are compared with the 28-day compressive strength. The CS and FA are having different specific gravity material so it induces changes in the density of concrete. Hence the density of concrete in the fresh state as well as in the dry state. From this result, it was noticed that the combined addition of CS and FA for the substitution of natural fine aggregate and cement enhances the hardened concrete properties. Particularly the incorporation of FA in the slag mixed concrete satisfies the durability criteria without negotiating the strength of concrete and also the use of both by-products improves filling and packing ability thereby the permeability of concrete has been turned down.