Utkarsh Sharma and Varun Sahni working on their projectUtkarsh Sharma alongwith his team members Vikas Hooda, Varun Sahni, Suman Thapa, Abhishek Sharma, Raman, Sutikshan, Vikrant, Tarneesh Kaur and Aaquib, students of Civil Engineering at Quest group of Institutions have found a new innovative method to make a better use of the waste rubber. It is a known fact that rubber is harmful for our environment. Scrap tires are the biggest producer of waste rubber and more than half of used tyres are simply burned for their fuel value, which is hazardous to life. He has examined the use of crumb rubber, which is recycled rubber from automotive scrap tyres, in concrete.

IMG-20151211-WA0022Laboratory tests were carried out on concrete namely compressive strength test and slump test of M20 concrete mix with different proportions of crumb rubber, 10% and 20% replacement of fine aggregate. The results were compared with Test Cubes made of normal mix of M20 concrete.

The findings of this study propound that Crumb rubber is technically feasible and can be used as replacement of sand in some specific construction activities.

Thus, the crumb rubber concrete may exhibit good characteristics in controlling crack initiation and propagation. This research which we are doing here could be very useful in providing us with the true knowledge of how to mix, haul, pump, place, finish and cure rubber concrete. It is noted that not many research in this field are done in this country, hence need of studying rubber in concrete is needed. Also, it was needed that research was done on curing of rubberised concrete in acidic and basic water. We did the curing in HCl and compared the results with curing in normal water, said Utkarsh Sharma who was leading this project.

He mentioned,”The incorporation in concrete of rubber aggregates, obtained from waste tires, is a suitable solution to decrease weight in some engineering manufactures. Despite some drawbacks, such as the large decrease in compressive strengths, and the increase of water request and air content, the tests demonstrate that rubcrete mix possesses interesting properties that can be useful in structural and non-structural applications. The performance of concrete is significantly affected by the type and content of the rubber particle as well as by cement type and mixture properties. He further added that the compressive strength decreased as the rubber content increased. The unit weight of the mix decreased approximately 3% for every 10% of crumb rubber added to replace fine aggregate. But crumb rubber can be added to flowable fill to produce a lightweight material.”