INVESTIGATION OF MECHANICAL PROPERTIES AND DURABILITY CHARACTERISTICS OF SELF-COMPACTING CONCRETE WITH PARTIAL CEMENT SUBSTITUTION BY GLASS POWDER AND FLY ASH

Abstract

Self-compacting concrete, sometimes called self-consolidating concrete (SCC), is simple to install in challenging conditions like intricate formwork or strongly reinforced concrete parts because it can flow and consolidate under its own weight. SCC is becoming a common material for building big, intricate structures with a lot of strength and intricate designs. When normal concrete is used in these circumstances, inadequate compaction often results, putting the long-term performance and longevity of the structures at risk. Using a mix of industrial waste materials, including fly ash and glass powder, may save energy and moneywhile also potentially lowering the amount of cement required to produce concrete. Every year, millions of tonnes of glass waste are produced worldwide. Glass does not naturally degrade; therefore, discarding it in landfills when it becomes waste is not sustainable. Silica makes up the majority of glass. Secondary calcium silicate hydrate (C-S-H) is produced when waste glass is ground into microsized particles and reacts with cement hydrates via pozzolanic processes. Utilising waste products on a large scale, including fly ash and glass powder, lowers project costs and prevents natural resources from being wasted in the building sector. The purpose of this study is to examine the potential benefits of using glasspowder and fly ash in place of certain cement in construction projects. M30-grade concrete specimens were used in this experiment, with glass powder and fly ash replacing cement inpercentages of 10%, 20%, 30%, and 40%. In order to evaluate the durability requirements, the specimens were tested for split tensile strength, compressive strength, sorptivity, water absorption, and quick chloride penetration. The fifteen 150 x 150 x 150 mm cubes, the forty-five 100 mm diameter x 50 mm height cylinders, and the fifteen 150 mm diameter x 300 mmheight cylinders were all cast and tested. The results of the experiment demonstrated that cement modified with fly ash and glass powder had superior split tensile and compressive strengths than standard SCC. It was shown that resistance to chloride permeability was increased when cement was partly substituted for glass powder.