According to Bee'ah, the crumb rubber
made from recycled tyres is a better and greener alternative to the synthetic material that is generally used to build tracks.
In the noise-suppression chamber, rectangular particles of scrap-tire crumb rubber
of three different sizes underwent study: crumb rubber
(finest) I with the particle size of 0.5-1 mm, crumb rubber
II--4 mm and crumb rubber
(coarsest) III--6 mm (Fig.
One promising disposal method is incorporating scrap tyre rubber (in the form of crumb rubber
) in different applications.
In recent years, concerns have been raised about the safety of recycled tire crumb rubber
used as infill for playing fields and playgrounds.
A few of which include: NHA has taken initiatives of experimenting Hot and Cold Recycling of Asphalt Pavements, Polymer Modified Bitumen (PMB), Crumb Rubber
Modified Bitumen and Cement Treated base Technology etc.
Conference focus topics will include new rubber raw materials and additives; curing and vulcanization of rubber; mixing and compounding; rubber reinforcement; nano composites; extrusion and calendering; rubber mold design and molding of rubber; rubber bonding; rubber testing and rheology; tire technology; recycling of rubber and tires; latex dipped products technology; industry regulations; latest tire recycling technologies; crumb rubber
technologies and markets; tire recycling market outlook in Africa; and update on environmental regulations.
He said: "After decades of use, we still lack detailed knowledge about possible uptake of chemicals - some known carcinogens - from crumb rubber
in 3G pitches."
Current researches have shown that crumb rubber
(CR) derived from grinding of ELTs into asphalt modification can be an effective modifier for construction and maintenance of asphalt pavement .
concrete (CRC), also called rubberized concrete, is an environment-friendly material using crumb rubber
as a composition of cement concrete.
Re searchers have considered using recycled scrap tires as crumb rubber
or rubber particles in concrete mixes to enhance certain concrete properties, such as ductility (Topcu, Avcular 1997; Zheng et al.
Campaigners also claim plastic pitches could increase the risk of cancer for players if the crumb rubber
material ends up in their skin or they breathe in the dust.