The best practise of the recycled tyre rubber modified asphalt binders and mixes

Abstract

Rubber derived from grinding of recycled cars and trucks tyres may be successfully used as a binder modifier or supplementary component of the asphalt mix. Number of researches reported sufficient characteristics of rubber modified asphalt binders or modified asphalt mixes in terms of improved permanent deformation and fatigue cracking. The behavior of asphalt binders or asphalt mixes modified with recycled crumb rubber depends on several factors, such as modification method, rubber content and size, modification temperature, mixing speed and time applied during the digestion process. This paper summarizes findings from literature review on the existing technologies and specifications related to the asphalt binders and asphalt mixes modification process with crumb rubber. Moreover, this article summarizes the effect of modified asphalt binder behavior in high and low temperatures. After analysis of the best practise, the algorithm of rubber modified binder and asphalt mix design model was introduced.