The invention relates to the technical field of odorless
asphalt and further discloses a modified odorless
asphalt mixture. The modified odorless
asphalt mixture comprises the following raw materialsin parts by weight: 100-200 parts of asphalt, 30-60 parts of
polymer, 30-60 parts of polyphosphoric acid, 20-40 parts of
maleic anhydride, 10-20 parts of
styrene, 5-10 parts of dihydroxypropionic acid, 15-30 parts of a
sulfur stabilizer, 20-40 parts of sulfonated
tall oil soap, 50-100 parts of aggregate, 20-40 parts of mineral
powder, 4-8 parts of an
odor inhibitor, 2-4 parts of a surfactant and 20-40 parts of
activated carbon powder. The preparation method comprises the following steps: mixing asphalt with polyphosphoric acid; the
colloid structure of the asphalt is changed into a gel type; the performance of the
asphalt pavement is enhanced; the
odor inhibitor and the surfactant are added in the asphalt
polymerization process, generation and volatilization of asphalt
flue gas such as
hydrogen sulfide and
sulfur dioxide in asphalt are effectively inhibited, the
toxicity of the asphalt is reduced, the aggregate, the mineral
powder and the
activated carbon powder can eliminate the odorof the asphalt, and the advantages of no
odor, no
smoke, environment friendliness,
energy conservation, low consumption and the like are achieved.