Abstract
The amount of construction waste has been dramatically increased in the last decade due to increase of population & high rise building in the country. So there is an immediate need of using the aggregate from the old demolished buildings for other construction works such as roads, canals, retaining walls ...etc. Due to the lack of natural resource and dumping areas in the country, Recycling Aggregate is playing an important role in present situations. In this project a study on M25 Grade of concrete of Natural Aggregate(NA), Recycled Aggregate(RA), 30 Kg /m 3 Steel Fiber Recycled Aggregate(SFRA) (aspect ratio=50), Modified Polymer Recycled Aggregate(PMRA) (Styrene butadiene rubber polymer=5%) has been carried out with water cement ratio =0.50 In this experimental investigation total number of 12 cubes ,12 beams & 12 cylinders of size 150x150mm , 150x150x700mm , 150x300mm specimens respectively were tested for 28 days & 3 cubes of Natural Aggregate, 3 cubes of Recycled Aggregate , 3 cubes of Steel Fibre Recycled Aggregate, 3 cubes of Modified Polymer Recycled Aggregate were tested in compressive testing machine for 7 days. The project is carried out at Gurunanak engineering college, Nagpur The following tests were carried out for the above specimens for 28 days 1) Compressive test 2) Split tensile test 3) Flexure test
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