A Comparative Analysis by Experimental Investigations on Normal and Ground Ultrafine Mineral Admixtures in Arresting Permeation in High-Strength Concrete

Abstract

In this growing world, there has always been strong competition in the market amongst industries in terms of economy, profits, shares, etc. one such industry is the construction industry where concrete is the key building substance that is in limelight. In the past, we have seen much advancement in concrete because of the research which is in progress on concrete to come out with a product that should be economical and strong enough to resist all kinds of loads. In this thesis, fly ash and silica fume are used as a replacement for cement along with steel fibers by volume of concrete. Here, fly ash is replaced by 0%, 15%, and 30%, and silica fume is replaced by 0%, 6%, 12%, and 18% for cement. Initially, a set of concrete specimens were cast with 0%, 15%, and 30% fly ash and 0%, 6%, 12%, and 18% silica fume with 0% addition of steel fibers and tested for compressive, flexural and split tensile strength. Secondly, another set of concrete specimens was casted with 0%, 15%, and 30% fly ash and 0%, 6%, 12%, and 18% silica fume with 0.5% addition of steel fibers and tested for the same. Similarly, another set of samples was cast 0%, 15%, and 30% fly ash and 0%, 6%, 12%, and 18% silica fume with a 1% addition of steel fibers and tested to determine the mechanical properties of concrete. And it was observed that maximum compressive, flexural, and split tensile strength was attained at 15% fly ash and 12% silica fume with 1% steel fiber.