Anti-track bituminous pavement cooling structure and material composition of each layer thereof

Abstract

The invention discloses an anti-track bituminous pavement cooling structure and a material composition of each layer thereof. The anti-track bituminous pavement cooling structure comprises a low-heatconduction upper face layer, a heat storage intermediate face layer and a high-heat-conduction lower face layer from top to bottom. During construction, layered paving and rolling are combined, and tack coat is scattered between the layers. According to the anti-track bituminous pavement cooling structure, a pavement structure actively carries out temperature control on a bituminous pavement, andpavement tracks are reduced by reducing the temperature of the intermediate face layer and the lower face layer of the bituminous pavement. According to the anti-track bituminous pavement cooling structure, the bituminous pavement structure with the low-heat conduction upper face layer, the heat storage intermediate face layer and the high-heat-conduction lower face layer is adopted, the pavementtemperature is reduced to the maximum degree through heat induction and phase change heat storage, and the cooling effect is remarkable. According to the anti-track bituminous pavement cooling structure, heat insulation fibers are added to the material of the low-heat conduction upper face layer, the high-temperature performance of a mixture can be improved while the heat conduction performance ofthe pavement, and the anti-track capacity of the upper face layer is improved.

Description

technical field [0001] The invention belongs to the field of road engineering, and in particular relates to a rutting-resistant asphalt pavement cooling structure and various layers of materials. Background technique [0002] The temperature of the asphalt pavement in summer can reach 60-70°C, and the asphalt pavement is prone to serious rutting damage under the action of vehicle load. Rutting will cause water drift and unequal tire-road contact stress, which will further aggravate road surface damage and affect vehicle driving safety. In our country, too deep ruts are the most important reason for overhauling asphalt pavement, accounting for more than 80% of the total. Road research workers improve the anti-rutting performance of asphalt pavement by using high modulus asphalt, anti-rutting agent, fiber asphalt mixture, and optimizing the mixture gradation and pavement structure, and have achieved certain results. However, asphalt mixture is a kind of viscoelastic material...

AI Technical Summary

Problems solved by technology

However, there are few studies and reports on the methods of preventing the thermal deformation of the mid-surface and reducing the temperature of the mid-surface.

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