Road bitumen granules

The present invention relates to bitumen granules comprising at least one chemical additive chosen from: a compound of general formula (I): R1-(COOH)z in which R1 is a linear or branched, saturated or unsaturated hydrocarbon chain comprising between 4 and 68 carbon atoms, preferably between 4 and 54 carbon atoms, and more preferably between 4 and 36 carbon atoms, and z is an integer varying between 1 and 4, preferably between 2 and 4, and a compound of general formula (II): R-(NH)nCONH-(X)m-NHCO(NH)n-R' in which: R and R', identical or different, contain a linear or branched, saturated or unsaturated, cyclic or acyclic hydrocarbon chain, having between 1 and 22 carbon atoms and optionally comprising heteroatoms and/or cycles having between 3 and 12 atoms and/or heterocycles having between 3 and 12 atoms; X contains a linear or branched, saturated or unsaturated, cyclic or acyclic hydrocarbon chain, having between 1 and 22 carbon atoms and optionally comprising one or more heteroatoms and/or cycles having betw