Experimental Studies and Behavior of Concrete On Performance of Steel Fiber and Polymer Modified Recycled Aggregate Concrete

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. Recycled Course Aggregate (RCA) particles consist of substantial amount of relatively soft cement paste component also they are more porous and less resistant to mechanical actions. 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. In this project a study on Natural Aggregate, Recycled Aggregate, 30 Kg /m3  Steel Fiber Recycled Aggregate (aspect ratio=50), Modified Polymer Recycled Aggregate (Styrene butadiene rubber polymer and Poly chloroprene Rubber =5%) has been carried out with w/c =0.40 In this experimental investigation total number of 12 cubes ,12 beams & 12 cylinders of size 150x150mm , 150x150x700mm , 150x300mm specimens respectively were tested for 7,14 and 28 days & 3 cubes of  Natural Aggregate, 3 cubes of  Recycled Aggregate , 3 cubes of  Steel Fiber Recycled Aggregate, 3 cubes of  Modified Polymer Recycled Aggregate were tested in compressive testing machine for 7 , 14 and 28days

The following tests were carried out for the above specimens for 7, 14 and 28 days

1) Compressive test

2) Split tensile test

3) Flexure test