Asphalt concrete snow-melting and ice-inhibiting pavement structure

Abstract

The invention discloses an asphalt concrete snow-melting and ice-inhibiting pavement structure. The pavement structure sequentially comprises a snow-melting and ice-inhibiting asphalt concrete surfacelayer, an impermeable layer, a stress absorption layer, a gravel layer and a base layer from top to bottom, wherein the snow-melting and ice-inhibiting asphalt concrete surface layer is formed by mixing an asphalt mixture and a snow-melting and ice-inhibiting material and paving; the stress absorption layer is formed by mixing and paving rubber and asphalt; wherein the asphalt is SBS modified asphalt, and the snow-melting and ice-inhibiting raw materials comprise biochemical humic acid, pyroligneous liquor, a starch-acrylic acid grafted copolymer, chloroprene emulsion, epoxy resin, phthalimide, isopropyl benzoate, polyester acrylate, beta-hydroxybutyraldehyde, thiourea, sorbitan fatty acid ester and the like. And after the snow-melting and ice-inhibiting material is mixed with the pavement material, the pavement performance of the pavement material can be improved, the loss of part of the snow-melting and ice-inhibiting material cannot be caused by rainwater scouring and vehicle abrasion, and a long-term effect can be achieved.

Description

technical field [0001] The invention relates to a pavement structure, in particular to an asphalt concrete snow-melting and ice-suppressing pavement structure. Background technique [0002] In most parts of northern China, snowfall often causes roads to freeze in winter, which leads to traffic accidents. Due to the excessive speed of the vehicle on the expressway, thin ice will be produced on the road surface under the condition of a small amount of precipitation, which is difficult for the driver to find and more likely to cause dangerous accidents. At present, the main deicing methods are divided into passive control technology and active control technology. Passive control techniques use mechanical deicing, manual deicing and spraying of deicing salt. The method of directly spraying snow melting salt will cause residual chlorine salt to damage the road surface, road guardrail, surrounding soil and plants. Direct spraying of snow melting agent not only causes waste of re...

AI Technical Summary

Problems solved by technology

Although the effect is good, it is expensive, not safe enough, and has many other disadvantages

For example: for the addition of snow-melting and ice-suppressing materials to the road surface, in the summer rainstorm environment, the effective snow-melting and ice-suppressing materials will be hydrolyzed and ionized soon after dissolving in water, and the dissolution speed is extremely fast. Almost all the ice material is washed away, not only does not have the effect of snow melting and ice suppression in dynamic, but also a large amount of effective snow melting salt water directly corrodes the foundation and the sudden soil around the road, causing damage to the road and the environment

And if the snow-melting and ice-suppressing material is not hydrophobic, in the actual construction process, it will be washed away by rainwater and worn by vehicles, resulting in the loss of part of the snow-melting and ice-suppressing material, which cannot play a long-term role.

However, if the hydrophobicity of the snow-melting and ice-suppressing material is too strong, sufficient snow-melting and ice-suppressing active ingredients cannot be released in time in rainy and snowy days, and it is difficult to achieve sufficient snow-melting and ice-suppressing effects, which is detrimental to driving safety.

For the method of embedding high-elastic materials and thermal ice and snow melting, there are disadvantages of large amount of engineering, cumbersome operation, and huge cost

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