ABSTRACT
This paper discusses the performance of bituminous mixtures made with a high percentage of ultrafine size rubber particles using the dry process. Laboratory tests were performed on asphalt concrete samples with and without rubber addition to compare results. The fatigue behavior, rutting resistance and evolution of crack propagation were evaluated by four-point bending tests and wheel tracking tests. The results showed that compared to conventional bituminous mixtures without rubber, better resistance to fatigue and rutting are achieved and slower crack propagation is registered. These facts lead to the conclusion that the fine crumb rubber bituminous mixtures fabricated by the dry process are a good and sustainable option for road pavements rehabilitation.
