BITUMEN/POLYMER COMPOSITIONS

摘要

The invention relates to the use of at least one phosphoric or thiophosphoric ester in order to broaden the plasticity range of an anhydrous bitumen/polymer composition of the type comprising at least one bitumen, optionally at least one filler and at least one crosslinkable or non-crosslinkable polymer, preferably a bituminous mastic. Said use enables the absolute value of the lower limit (cold flexibility temperature) and/or the upper limit (ball-ring temperature) of the plasticity range of the composition to be increased. The aim of the invention is to provide a bitumen/polymer composition having a good performance when hot (increase in ball-ring softening temperature) and when cold (reduction in flexibility temperature), along with good storage stability.