Bituminous composition solid at ambient temperature

A bituminous composition comprising at least:

• a) a bitumen base,
• b) a compound of general formula (I):
• Ar1-R1—Ar2 (I)
• wherein:
• Ar1 and Ar2 represent, independently of each other, an aromatic group comprising from 6 to 20 carbon atoms chosen among a benzene nucleus or a system of condensed aromatic nuclei, said aromatic group being substituted by at least one hydroxyl group and optionally by one or more C1-C20 alkyl groups, and
• R1 represents an optionally substituted hydrocarbon divalent radical, the main chain of which comprises from 6 to 20 carbon atoms and at least one group chosen from the amide, ester, hydrazide, urea, carbamate and anhydride functional groups,
• c) a compound of general formula (II):
• R2—(NH)nCONH—X—(NHCO)p(NH)n—R′2 (II)
• wherein:
• the R2 and R′2 groups, which are identical or different, represent a hydrocarbon chain comprising from 1 to 22 carbon atoms which is optionally substituted and which optionally comprises one or more heteroatoms, and R2 can be H,
• the X group represents a hydrocarbon chain comprising from 1 to 22 carbon atoms which is optionally substituted and which optionally comprises one or more heteroatoms, and
• n and p are integers having a value of 0 or 1, independently of each other.