METHOD FOR PREPARING CURED ASPHALT/POLYMER COMPOSITIONS WITHOUT A CURING AGENT

摘要

The invention relates to a method for preparing cured asphalt/polymer compositions without a curing agent, comprising contacting, optionally while agitating, at a temperature of 180°C to 220°C for a duration of 4 to 48 hours, at least one bitumen and at least one polymer composition including at least 80 wt %, relative to the weight of the polymer composition, of a diblock copolymer, of an aromatic monovinyl hydrocarbon block, and of a conjugated diene block, having a molecular weight of more than or equal to 80000 g/mol-1 and a conjugated diene double bond unit content 1-2 of greater than or equal to 15 wt % relative to the total weight of the conjugated diene.