Studies on Strength Characteristics of Concrete with Partial Replacement of Fine Aggregate with Robo Sand and Cement with Metakaolin

Concrete is a composite material made from cement, water, fine aggregate and coarse aggregate. But present researchers are in interest of finding advanced concrete by using different alternative materials or products produced from industries which are not ecofriendly. An attempt has been made in the present investigation to evaluate the compressive strength and split tensile strength and flexural strength properties by replacing cement partially with metakaolin and Fine Aggregate with ROBO Sand by Certain percentage. In this project, experimental study was carried out on M-35 grade of concrete. In this concrete mixes Fine Aggregate was replaced by ROBO sand by a constant percentage and cement was replaced by metakaolin in various percentages such as 5%, 10%, 15% and 20%.The results thus obtained were compared and examined with respect to the control specimen. From the test results, it was found that 15% of the Ordinary Portland cement could be beneficially replaced with the metakaolin to improve compressive, split tensile and flexural strengths of concrete. For strength parameters for each grade of concrete Cubes and Cylinders are tested at the age of 7 and 28 days.