Anti-rutting asphalt and preparation method thereof

Abstract

The invention relates to the technical field of road engineering materials, and particularly discloses anti-rutting asphalt and a preparation method thereof. The anti-rutting asphalt comprises an asphalt mixture and cement slurry in a weight ratio of (3-4.8): 1; based on the total amount of the asphalt mixture, the asphalt mixture is prepared from the following raw materials in parts by weight: 3-10 parts of matrix asphalt, 80-100 parts of coarse aggregate, 10-20 parts of fine aggregate and 0.05-0.3 part of an anti-rut agent, based on the total amount of the cement slurry, the cement slurry is prepared from the following raw materials in parts by weight: 0-70 parts of cement, 80-100 parts of water, 20-40 parts of mineral powder, 40-80 parts of sand and 2-6 parts of an additive, the preparation method comprises the following steps: firstly preparing the asphalt mixture, then flattening, pouring the cement slurry on the flattened asphalt mixture, and curing to obtain the asphalt pavement. The asphalt provided by the invention has excellent anti-rutting performance.

Description

technical field [0001] The application relates to the technical field of road engineering materials, more specifically, it relates to a rutting-resistant asphalt and a preparation method thereof. Background technique [0002] Asphalt pavement is the main structural form of high-grade highways and municipal roads in my country. With the continuous increase of traffic volume and axle load, especially in high temperature summer, more difficult rutting damages generally appear. Rutting is the main structure of asphalt pavement in recent years. Compared with cracking and water damage, rutting is the most harmful and directly affects traffic safety. At the same time, the repair of rutting damage is the most difficult, because rutting not only occurs on the surface, but also often endangers the middle and lower layers. [0003] Because the appearance of rutting will greatly reduce the performance of the road surface, affect the smoothness of the road surface, and reduce the driving...

AI Technical Summary

Problems solved by technology

At the same time, the repair of rutting damage is the most difficult, because rutting not only occurs on the surface, but also often endangers the middle and lower layers

[0003] Because the appearance of rutting will greatly reduce the performance of the road surface, affect the smoothness of the road surface, and reduce the driving comfort; it will reduce the thickness of the asphalt layer, reduce the overall strength of the surface layer and the pavement structure, and further cause cracks and pits Grooves and other road surface damage; it will seriously affect the quality and service life of the road surface; the road surface drainage is not smooth in rainy days, and the driving vehicles are prone to drifting, which affects the safety of high-speed driving; therefore, the anti-rutting ability of the asphalt pavement must be strengthened

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