A method for improving the drainage performance of double-layer drainage asphalt pavement

Abstract

The invention relates to a method for improving the drainage performance of double-layer drainage asphalt pavement, belonging to the technical field of drainage asphalt pavement, and solves the current problems of pore blockage and reduced drainage performance due to the deposition of dust particles in the pores of the double-layer drainage asphalt pavement. In the present invention, materials such as silane compounds and nano-silica are selected to prepare a super-hydrophobic solution, and a high-pressure water mist gun is used to spray the super-hydrophobic solution evenly on the asphalt mixture on the upper, lower structural layers and the gaps of the double-layer drainage asphalt pavement respectively, and control the spraying of the super-hydrophobic solution. The actual drainage performance and self-cleaning effect were tested using the contact angle and constant head osmometer to determine the optimal spraying amount to further improve the drainage performance of double-layer drainage asphalt pavement. , reducing the probability of pore blockage. The method for improving the drainage performance of the double-layer drainage asphalt pavement provided by the invention can improve the phenomenon of pore blockage, improve the drainage capacity, and has a better self-cleaning effect.

Description

technical field [0001] The invention relates to a method for improving the drainage performance of double-layer drainage asphalt pavement, belonging to the technical field of drainage asphalt pavement. Background technique [0002] As the main pavement form to reduce noise, double-layer drainage asphalt pavement is mainly composed of a thin layer of drainage asphalt with small voids and a thicker layer of drainage asphalt with large voids. The lower drainage asphalt structure layer can eliminate the water film on the road surface mainly by improving the lateral drainage. Compared with the traditional drainage asphalt pavement, it can drain the stagnant water on the road faster. In addition, the drainage asphalt layer with small voids in the double-layer drainage asphalt pavement can block large particles of dust, leaving most of the particle size dust in the road surface layer and the pores of the surface layer, so that it does not fall into the lower layer and acts as a "fi...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for improving the drainage performance of double-layer drainage asphalt pavement, so as to solve the problem of poor hydrophobic effect on the surface of the pore structure of the current double-layer drainage asphalt pavement, weak self-cleaning ability, and problems caused by the deposition of dust particles in the pores of the double-layer drainage asphalt pavement. Pore ​​clogging occurs, resulting in a decrease in the drainage performance of double-drainage asphalt pavements

[0010] In order to solve the problems of poor surface hydrophobic effect, weak self-cleaning ability of the pore structure of the current double-drainage asphalt pavement, and pore blockage due to the deposition of dust particles in the pores of the double-drainage asphalt pavement, resulting in a decrease in the drainage performance of the double-drainage asphalt pavement