Modified odorless asphalt mixture and preparation method thereof

Abstract

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.

Description

technical field [0001] The invention relates to the technical field of clean-smell asphalt, in particular to a modified clean-smell asphalt mixture and a preparation method thereof. Background technique [0002] Asphalt is a dark brown complex mixture composed of hydrocarbons of different molecular weights and their non-metallic derivatives. It is a kind of high-viscosity organic liquid. It is liquid with a black surface and is soluble in carbon disulfide. Asphalt is a waterproof, moisture-proof and anti-corrosion organic gelling material. It can be mainly divided into three types: coal tar pitch, petroleum pitch and natural pitch. Among them, coal tar pitch is a by-product of coking, petroleum pitch is the residue after crude oil distillation, and natural pitch It is stored underground, and some form ore layers or accumulate on the surface of the earth's crust. [0003] Heated asphalt is often used to lay roads, repair houses or be used as anti-corrosion coatings, but the ...

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Problems solved by technology

[0009] Aiming at the deficiencies of the prior art, the present invention provides a modified clean-odor asphalt mixture and a preparation method thereof, which has the advantages of significantly enhancing the performance of asphalt while ensuring its environmental protection, and solves the problem of poor asphalt performance in the prior art and not enough environmental protection