Concentrated stable rubberized bitumen, asphalt composition and method for formation of said concentrate

摘要

"Concentrated stable rubberized bitumen, asphalt composition and method for formation of said concentrate.The concentrates are prepared by forming stable rubberized bitumen was initially a mass comprising bitumen and rubber particles fragmented in a quantity of at least about 15% by the weight of the dough with the rubber crumb and swollen in situ.And applying conditions of temperature and shear to the mass to dissociate the vulcanised network of rubber particles and to incorporate the vulcanized digested in bitumen.The concentrate of rubberized bitumen is stable against sedimentation of rubber particles in the storage of concentrated around 160 198 C for 48 hours and diluting to a concentrationLower in solubility test ASTM.