Bitumen compositions

Improved bitumen compositions including:

• (A) 100 parts of bitumen;
• (B) and/or (B1) 0.5 to 4 parts;
• (B) denoting a copolymer of an alpha-olefin, of an unsaturated epoxide and of an ester of unsaturated carboxylic acid, (B1) denoting a copolymer of an alpha-olefin and of an unsaturated epoxide and is different from (B);
• (D) 2 to 6 parts of a thermoplastic elastomer (C) and/or (F) 0.5 to 5 parts;
• (C) denoting a copolymer of an alpha-olefin and of an ester of unsaturated carboxylic acid;
• (F) denoting an ethylene/vinyl acetate copolymer.

Improved bitumen compositions including:

• (A) 100 parts of bitumen;
• (B) and/or (B1) 0.5 to 4 parts, (B) denoting a copolymer of an alpha-olefin, of an unsaturated epoxide and of an ester of unsaturated carboxylic acid;
• (B1) denoting a copolymer of an alpha-olefin and of an unsaturated epoxide and is different from (B);
• (E) 0.5 to 4 parts of a polymer which is reactive with (B);
• (D) 2 to 6 parts of a thermoplastic elastomer;
• (C) and/or (F) 0 to 5 parts;
• (C) denoting a copolymer of an alpha-olefin and of an ester of unsaturated carboxylic acid;
• (F) denoting an ethylene/vinyl acetate copolymer.