Experimental Study on Mechanical Properties of Concrete Using Chipped Rubber Aggregates and Silica Fume.

Khan, Liayaqat Ali; Lalotra, Sourabh; bhardwaj, Shivani

Concrete plays a main role and is widely used construction material for the construction of civil engineering works. It basically consists of aggregates which are bonded together by cement and water. Use of these aggregates or raw materials in concrete causes depletion of natural resources. Both fine and coarse aggregates that are used for making concrete has become expensive due to its scarcity. So it is required to use alternative materials for making concrete that can be a suitable substitute of aggregates. It has been found from research that rubber which is generated in large quantities as waste doesn't have useful disposal till now and threatens the environment. In the present experimental work M35 concrete mix was designed as per IS 10262-2009 with partial replacement of cement by silica fume and coarse aggregates by chipped rubber. Cement was replaced by Silica fume with percentage replacement of 0%,5%,10% & 15% and Coarse aggregates was replaced by chipped crumb rubber with percentage replacement of 0%,2.5%,5% & 10%. The concrete mixes with varying percentage of silica fume and chipped rubber was tested for compressive strength, split tensile strength and Flexural resistance test. It was concluded from results that by introducing silica fume in concrete increases the mechanical properties of concrete up to 10% replacement of cement but with increasing percentage replacement of chipped rubber mechanical properties decreases. The optimum strength was obtained by using 10% silica fume as cement replacement and 2.5% chipped rubber as coarse aggregates replacement.

SILICA fume; CONSTRUCTION materials; FLEXURAL strength testing; RAW materials; RUBBER; CRUMB rubber

International Journal of Recent Research Aspects, 2019, Vol 6, Issue 1, p12

2349-7688

Academic Journal