Bitumen which is solid at ambient temperature

A bituminous composition comprising at least:

• a) bitumen,
• b) a compound of general formula (I):
• R1—(COOH)z (I)
• in which R1 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 (II):
• R2—(NH)nCONH—X—(NHCO)p(NH)n—R3 (II)
• in which:
• the R2 and R3 groups, which may be identical or different, represent a hydrocarbon chain comprising from 1 to 22 carbon atoms and optionally comprising heteroatoms, and R3 may be H,
• the group X represents an optionally substituted hydrocarbon chain comprising from 1 to 22 carbon atoms and optionally comprising heteroatoms,
• n and p are integers having a value of 0 or 1 independently of one another,
• d) a compound of general formula (III):
• Ar1-R—Ar2 (III)
• in which:
• Ar1 and Ar2 represent, independently of one another, an aromatic group comprising from 6 to 20 carbon atoms chosen from a benzene ring or a system of fused aromatic rings, the aromatic group being substituted by at least one hydroxyl group and optionally by one or more C1-C20 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.