DURABILITY PROPERTIES OF CONCRETE CONTAINING METAKAOLIN, MARBLE DUST AND SLAG SAND FOR HIGH STRENGTH CONCRETE
Shaik Sony Sulthana1, B. Ajitha2
1M. Tech (Structural Engineering), Jawaharlal Nehru Technological University College of Engineering (Autonomous) Anantapuramu.
2Assistant Professor, Department of CIVIL ENGINEERING, Jawaharlal Nehru Technological University College of Engineering (Autonomous) Anantapuramu.
Concrete is the material used most often in building. The worldwide generation of concrete has generously increased since 1990.Production of concrete mix entails a lot of natural contamination since it incorporates the outflow of CO2 gas. As the industry is shifting towards environmental friendly practices, different supplementary cementitious materials like silicon oxide exhaust, fly ash, slag, rice husk and metakaolin are being used. These materials help in developing High Strength Concrete (HSC) with advanced workability, durability, strength and diminished penetrability. Metakaolin (MK) is obtained from the clay mineral kaolinite in an anhydrous calcined form.
Designed the mix proportions of concrete for M60 Grade cement. Figure out things like cement’s standard consistency, specific gravity, and fineness, as well as its beginning setting time and final setting time. Determine the characteristics of both fine and coarse aggregate, such as their bulk density, sand bulking, fineness modulus, specific gravity, and sieve analysis. Find out the concrete properties such as Slump test and Vee bee test and calculating the W/C ratio. Casting the cubes based on required W/C ratio and curing under water, Acid and base and tested after 28 days(water Cured Cubes), 30,90 & 120 Days (acid and base Cured Cubes). After the completion of the curing period, Use a compressive testing machine to determine the cubes’ compressive strength. Sulfuric acid and sodium hydroxide are used for curing purposes in this instance. In terms of water weight, it accounts for about 5% of the consumption. Metakaolin can replace 5%-15% of the cement and 10%-20% of the marble dust.
Keywords: Metakaolin, Marble dust, Slag sand, High Strength, Durability.