Bitumen pellets comprising at least: a) bitumen, b) a compound of general formula: R 1 -(COOH) z in which R 1 represents a linear or branched hydrocarbon chain comprising from 4 to 68 carbon atoms, and z is an integer ranging from 2 to 4, c) a compound of general formula: R 2 - n CONH-X-(NHCO) p n -R 3 in which: - the R 2 and R 3 groups, which may be identical or different, represent a hydrocarbon chain comprising from 1 to 22 carbon atoms and optionally comprising heteroatoms such as N, O, S, and R 3 may be H, - the group X represents an optionally substituted hydrocarbon chain comprising from 1 to 22 carbon atoms and optionally comprising heteroatoms such as N, O, S, - n and p are integers having a value of 0 or 1 independently of one another, d) a compound of general formula: Ar1-R-Ar2 in which: - Ar1 and Ar2 represent, independently of one another, an aromatic group comprising from 6 to 20 carbon atoms and chosen from a benzene ring or a system of fused aromatic rings, said aromatic group being substituted by at least one hydroxyl group and optionally by one or more C 1 -C 20 alkyl groups, and - R represents an optionally substituted divalent hydrocarbon radical, the main chain of which comprises from 6 to 20 carbon atoms and at least one group chosen from amide, ester, hydrazide, urea, carbamate and anhydride functions. a) bitumen, b) a compound of general formula: R 1 -(COOH) z in which R 1 represents a linear or branched hydrocarbon chain comprising from 4 to 68 carbon atoms, and z is an integer ranging from 2 to 4, c) a compound of general formula: R 2 - n CONH-X-(NHCO) p n -R 3 in which: - the R 2 and R 3 groups, which may be identical or different, represent a hydrocarbon chain comprising from 1 to 22 carbon atoms and optionally comprising heteroatoms such as N, O, S, and R 3 may be H, - the group X represents an optionally substituted hydrocarbon chain comprising from 1 to 22 carbon atoms and optionally comprising heteroatoms such as N, O, S, - n and p are integers having a value of 0 or 1 independently of one another, - the R 2 and R 3 groups, which may be identical or different, represent a hydrocarbon chain comprising from 1 to 22 carbon atoms and optionally comprising heteroatoms such as N, O, S, and R 3 may be H, - the group X represents an optionally substituted hydrocarbon chain comprising from 1 to 22 carbon atoms and optionally comprising heteroatoms such as N, O, S, - n and p are integers having a value of 0 or 1 independently of one another, d) a compound of general formula: Ar1-R-Ar2 in which: - Ar1 and Ar2 represent, independently of one another, an aromatic group comprising from 6 to 20 carbon atoms and chosen from a benzene ring or a system of fused aromatic rings, said aromatic group being substituted by at least one hydroxyl group and optionally by one or more C 1 -C 20 alkyl groups, and - R represents an optionally substituted divalent hydrocarbon radical, the main chain of which comprises from 6 to 20 carbon atoms and at least one group chosen from amide, ester, hydrazide, urea, carbamate and anhydride functions. - Ar1 and Ar2 represent, independently of one another, an aromatic group comprising from 6 to 20 carbon atoms and chosen from a benzene ring or a system of fused aromatic rings, said aromatic group being substituted by at least one hydroxyl group and optionally by one or more C 1 -C 20 alkyl groups, and - R represents an optionally substituted divalent hydrocarbon radical, the main chain of which comprises from 6 to 20 carbon atoms and at least one group chosen from amide, ester, hydrazide, urea, carbamate and anhydride functions.