• Gurav Rohan Rajendra
• Karvekar Arvind Vishnu

Construction industry is one of industry which is growing day by day more. The use of concrete in construction industry is more and prime because of property and durability of concrete it is used in most of regions. Concrete is mainly made of three type of material which are cement, sand and aggregate. In those materials, sand is one of the most important material because of its property and strength parameter. But sand (well graded river sand) is a limited source or it is more difficult to get well graded river sand n now a days. So to overcome or replace this element, most researches are done and lots are in processor under research. So this is also a research to overcome or replace sand with another similar material and also addition of fibers in concrete with mono and hybrid way to recover strength due to addition of waste foundry sand as a partial replacement of river sand. Foundry industry is also a growing industry and because of that waste in foundry is also increased. That foundry waste is nothing but the waste foundry sand. Generally sand which is used in foundry is reused again and again until it will burn up to 70% and after that this waste foundry sand is used for landfill purpose. But there is percentage of waste is more than demand. So it is need also to dispose this waste. So this waste can be useful for partial replacement of river sand. Also fibers are most convenient mode by which strength of concrete can be increase and also reduction of shrinkage and creep in concrete. In this research paper GLASS and POLYPROPELENE fibers are used in concrete. Like a roots of tree adheres soil same the fibers are acting in concrete. Different types of fibers give different types of results in increasing of strength of concrete. In this research paper 1.5% of fibers are added with respect to volume of concrete.

Fiber Reinforced Concrete, Waste Foundry Sand (WFS).

"PARTIAL REPLACEMENT OF RIVER SAND BY WASTE FOUNDRY SAND WITH ADDITION OF FIBERS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 3, page no.b779-b783, March-2022, Available :http://www.jetir.org/papers/JETIR2203199.pdf

"PARTIAL REPLACEMENT OF RIVER SAND BY WASTE FOUNDRY SAND WITH ADDITION OF FIBERS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 3, page no. ppb779-b783, March-2022, Available at : http://www.jetir.org/papers/JETIR2203199.pdf