Weather-proof modified asphalt

Abstract

The invention mainly relates to the technical field of construction and discloses a weather-proof modified asphalt. The weather-proof modified asphalt is prepared from the following raw materials: 95-100 parts of matrix asphalt, 2.2-2.4 parts of water, 2.1-2.3 parts of nanometer titanium dioxide, 1.7-1.9 parts of SBS asphalt modifier, 1.1-1.3 parts of fatty alcohol polyoxyethylene ether ammonium sulfate, 0.3-0.5 part of asphalt stabilizer and 0.5-0.7 part of graphene. The weather-proof modified asphalt provided by the invention has the advantages of extensive source of raw materials, simple preparation, low cost, high weather fastness, ageing delaying effect, high fatigue damage resistance and anti-rutting performance under high-temperature and rainy conditions, capability of avoiding embrittlement and cracking under low temperature, high stability and capability of prolonging service life of road. Nanometer titanium dioxide and SBS asphalt modifier are added after matrix asphalt is heated and molten, so that fluidity and weather fastness of asphalt can be promoted and construction difficulty can be reduced.

Description

technical field [0001] The invention mainly relates to the technical field of construction, in particular to a weather-resistant modified asphalt. Background technique [0002] Asphalt is a waterproof, moisture-proof and anti-corrosion organic gelling material. It is mainly used in coatings, plastics, rubber and other industries as well as road paving. As the axle load continues to increase, it is required to further improve the anti-flow performance of the road surface, that is, the ability to resist rutting at high temperatures; to improve flexibility and elasticity, that is, the ability to resist cracking at low temperatures, so there are a variety of modifications with different shapes. Asphalt, but the modification performance of modified asphalt is not obvious at present, and the price is expensive. The price of the modified material is usually 2~7 times higher than that of ordinary petroleum asphalt, so the usage of modified asphalt in the process of road construction...

AI Technical Summary

Problems solved by technology

[0002] Asphalt is a waterproof, moisture-proof and anti-corrosion organic gelling material. It is mainly used in coatings, plastics, rubber and other industries as well as road paving. As the axle load continues to increase, it is required to further improve the anti-flow performance of the road surface, that is, the ability to resist rutting at high temperatures; to improve flexibility and elasticity, that is, the ability to resist cracking at low temperatures, so there are a variety of modifications with different shapes. Asphalt, but the modification performance of modified asphalt is not obvious at present, and the price is expensive. The price of the modified material is usually 2~7 times higher than that of ordinary petroleum asphalt, so the usage of modified asphalt in the process of road construction is very high. less, which obviously limits the promotion and use of modified asphalt

[0003] The existing patent document CN 108530917 A provides a modified asphalt. The modified asphalt has many components and the preparation process is complicated, which obviously increases the preparation cost of the modified asphalt. However, the high temperature stability of the modified asphalt is not ideal, especially in Under the high temperature and rainy conditions in summer, the stability of modified asphalt is poor, and fatigue damage and rutting are more serious.

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