27/08/2015 Concrete Aggregates From Discarded Tyre Rubber http://www.engineeringcivil.com/concreteaggregatesfromdiscardedtyrerubber.html 1/7 Concrete Aggregates From Discarded Tyre Rubber Posted in Concrete Engineering , Project Reports , Research Papers | Email This Post | 10 Like By Kaushal kishore Materials Engineer, Roorkee The scarcity and availability at reasonable rates of sand and aggregate are now giving anxiety to the construction industry. Over years, deforestation and extraction of natural aggregates from river beds, lakes and other water bodies have resulted in huge environmental problems. Erosion of the existing topography usually results in flooding and landslides. Moreover, the filtration of rain water achieved by deposits of natural sand is being lost, thereby causing contamination of water reserves used for human consumption. Hence, to prevent pollution authorities are imposing more and more stringent restrictions on the extraction of natural aggregates and its crushing. The best way to overcome this problem is to find alternate aggregates for construction in place of conventional natural aggregates. Rubber aggregates from discarded tyre rubber in sizes 2010 mm, 104.75 mm and 4.75 mm down can be partially replaced natural aggregates in cement concrete construction. About one crore 10 lakhs all types of new vehicles are added each year to the Indian roads. The increase of about three crores discarded tyres each year pose a potential threat to the environment. New tyre is made of natural rubber (also called virgin rubber), styreneButadien Rubber (SBR), Polybutadienc Rubber (PBR), Carbon black, Nylon tyre cord, rubber chemicals, steel tyre card and Butyl rubber. USES OF OLD TYRES Rubber from discarded tyres use in, floor mats, belts, gaskets, shoe soles, dock bumpers, seal, muffler hangers, shims and washers. 3 to 5% Rubber crumbs and upto 10% reclaimed rubber is particularly used in automobile tyres. Tyre pieces is used as fuel in cement and brick kilin. However, various local authorities are now banning the tyre burning due to atmosphere pollution. Whole tyres also used as highway crash barriers, furniture, boat bumpers on marine docks, etc. Land filling or burning tyres for energy have limited prospects as environmental authorities are acknowledging the need for its greener alternatives. Rubber Seals & Gaskets sealseastern.com Precision molded rubber seals, gaskets, and o rings Release Agent Supplier Two roll mixing mill Concrete Waterproofing