To obtain a resistant to the bituminous coated rutting and method of obtaining the base of the bituminous binder.

摘要

P the invention relates to a method of manufacture of a bituminous binder for the production of layers and / or coatings of construction and / or civil engineering structure comprising the following steps: a) added to a bitumen or mixture of bitumens, at a temperature of 150 to 220°C, preferably of 160 to 200°C, of a treatment agent chosen from among the compounds of formula hn.sup. + 2pno3n + 1 with n greater than 1, the phosphoric anhydride (p2o5), and mixtures of those - c, b) to react with stirring, at a temperature of 150 to 220°C, preferably of 160 to 200°C. the treatment agent and the bitumen or mixture of bitumens, etc.) to recover the bituminous binder. / p