FIELD: chemistry.
SUBSTANCE: invention relates to a group of additives to improve the characteristics of bitumen or bituminous compositions. Said group of additives for improving the characteristics of bitumen or bituminous compositions contains an acidic additive selected from phosphoric acids, polyphosphoric acids and their mixtures, and a hydrogen sulfide scavenger selected from copper hydroxycarbonates and their mixtures with oxides, hydroxides, hydrates, carbonates, carboxylates, nitrates and copper phosphates. Use of a scavenger of hydrogen sulfide, as described above, to reduce its discharge from bitumen or bituminous compositions treated with an acidic additive, wherein the proportion of the absorber is from 0.05 to 5 wt.%, and the specified acid additive is as described above. This method for producing bitumen or a bituminous composition where bitumen and an acidic additive are brought into contact with an absorber, as described above. Bituminous composition, which can be obtained by the above production method. Bituminous binder, characterized in that it contains the above-mentioned bituminous composition. Asphalt, characterized by the fact that it contains the above bituminous binder and inorganic and/or synthetic fillers. Bituminous mixture characterized by the fact that it contains the above bituminous binder, fillers and, optionally, inorganic and/or synthetic fillers. Invention is developed in dependent items of the formula.
EFFECT: reducing the release of hydrogen sulfide while improving mechanical and/or dynamic properties.
22 cl, 6 tbl
