Experimental Study on Strength of Concrete by Replacement of Fine Aggregate with Robo Sand

In present days the construction industry in the India is facing one of the major problems that is natural fine aggregate. Excavation of fine aggregate from river because they effect on environment and changing the river direction Cement, sand and aggregate are basic needs for any construction industry. Sand is a prime material used for preparation of mortar and concrete and which plays a major role in mix design. Now a day's erosion of rivers and considering environmental issues, there is a scarcity of river sand. The non-availability or shortage of river sand will affect the construction industry; hence there is a need to find the new alternative material to replace the sand, such that excess river erosion and harm to environment is prevented. Many researchers are finding different materials to replace sand and one of the major materials is Robo sand using different proportion of this robo sand along with sand the required concrete mix can be obtained. Replacement of fine aggregate with robo sand by and also finding the compressive Strength of that concrete cube. In This Project presents are view of the different alternatives to sand in preparation of concrete. this present experimental study a comparative study has been carried out to check the usability of robo sand in place of fine aggregate. This can be used as an alternative to fine aggregate in concrete. In the present investigation workability and strength of concrete was evaluated by replacement of natural sand by Robo sand in proportions of 0%,25%, 50%, 75%, and 100% is studied forM30grade concrete cubes, cylinders and beams. Slump cone method is taken for finding workability. For strength parameters for each grade of concrete Cubes, Cylinders and beams were casted and tested at the age of 7,14 and 28 days