The use of crumb rubber, which is the recycled tire rubber, as an additive in hot mix asphalt mixture is considered as a sustainable construction method. The purpose of this study was to investigate the effect of adding crumb rubber to asphalt mixture using wet process.
Crumb rubber machinery in the selection of usage of rubber. To meet this challenge, different special forms of natural rubber have been evolved to make it suitable for certain specific applications. Some of them are Oil Extended Natural Rubber (OENR), Thermoplastic Natural Rubber (TPNR), De Proteinised Natural Rubber (DPNR), Superior Processing Rubbers, Graft Co-polymer Rubbers etc.