crushed stones of diabase and limestone were used for coarse aggregate and fine aggregate respectively. hydrated lime as mineral filler was obtained from a commercial source. SBS modified asphalt binder was obtained from a commercial petroleum company. a cycled rubber industry ltd shanghai china supplied recycled tires rubber. the rubber was granulated under room temperature and freed of wire and fabric. the range of rubber particle size was 1-3 mm, its appearance was shown in fig l. table l presents the chemical composition of the crumb rubber supplied