Heat insulation pavement structure and construction method

Abstract

The invention discloses a heat insulation pavement structure and a construction method. The heat insulation asphalt pavement structure is a combined structure consisting of an ultrathin wearing layer,a heat insulation layer and asphalt concrete, and the thickness of the ultrathin wearing layer in the structure is not thicker than 2 cm, and the heat insulation layer is a sealing layer consisting of hot asphalt and ceramsite. The invention also discloses the construction method of the heat insulation pavement structure, which comprises following steps of firstly constructing asphalt concrete ona pavement base layer, then spreading road petroleum asphalt on the asphalt concrete, then spreading heat insulation particles on road petroleum asphalt to form the heat insulation layer, and finallyconstructing an ultrathin wearing layer on the heat insulation layer. Compared with the prior art, the invention has advantages of good heat insulation effect, excellent antiskid and durability performances and convenient construction.

Description

technical field [0001] The invention relates to the technical field of asphalt pavement structure with special performance, in particular to a heat-insulating pavement structure and a construction method thereof. Background technique [0002] Asphalt mixture is mainly used for the paving of asphalt pavement. It is a typical temperature-sensitive material, and the temperature directly affects its road performance. Especially in summer, under the sun radiation and high temperature, the asphalt pavement absorbs a large amount of heat, and continuously transmits it to the depth of the pavement structure, so that the asphalt pavement is in a high temperature state for a long time, and it is easy to form rutting and other diseases under the repeated action of vehicle load , affecting road traffic. Therefore, it is necessary to take certain heat insulation measures to solve this problem. [0003] There are two main types of thermal insulation measures for asphalt pavement. One i...

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Problems solved by technology

This method can directly and quickly block the downward transmission of heat, but the surface roughness of these coating materials is generally small, and it will reduce its anti-skid performance when applied to the surface of the road surface, which is easy to cause traffic accidents, and its durability is low. Expensive and not practical in the long run

Second, heat insulating materials are directly added to asphalt concrete during surface construction to make heat insulating concrete, but existing studies have shown that this method will reduce the performance of asphalt concrete and affect the performance of asphalt pavement

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