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Cooling asphalt pavement structure and construction method thereof

A technology of asphalt pavement and construction method, which is applied in the direction of roads, roads, pavement details, etc., can solve the problems of easy deformation at high temperature, low cooling efficiency, high surface temperature, etc., to prevent rutting, simple construction process, and low thermal conductivity Effect

Inactive Publication Date: 2021-04-30
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems existing in the prior art, the present invention provides a cooling asphalt pavement structure and its construction method to solve the technical problems of the existing thermal resistance pavement with high surface temperature, low cooling efficiency and easy deformation at high temperature

Method used

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  • Cooling asphalt pavement structure and construction method thereof
  • Cooling asphalt pavement structure and construction method thereof
  • Cooling asphalt pavement structure and construction method thereof

Examples

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Embodiment 1

[0046] In this embodiment 1, the cooling asphalt pavement structure is paved on a road section as an example, wherein the daily average temperature of this road section is 32.3°C, and the daily maximum temperature is 38°C.

[0047] A cooling asphalt pavement structure is provided in this embodiment 1, including asphalt surface layer 1, base layer 2, subbase layer 3, heat conducting rod 4, temperature sensor 5 and temperature recorder; subbase layer 3, base layer 2 and asphalt surface layer 1 It is laid sequentially from bottom to top; heat conduction rods 4 are evenly buried in the asphalt surface layer 1, and the asphalt surface layer 1 includes a lower layer 11, a middle surface layer 12 and an upper layer 13 laid in sequence from bottom to top; wherein, the heat conduction rods 4 are vertical Embedded in the lower layer 11, the middle layer 12 and the lower layer 13; between the base layer 2 and the lower layer 11, between the lower layer 11 and the middle layer 12, between ...

Embodiment 2

[0077] This embodiment 2 provides a cooling asphalt pavement structure. The structure principle of the pavement structure described in this embodiment 2 is basically the same as that of the pavement structure in embodiment 1. The difference is that the upper layer 13 uses a heat-resistant asphalt mixture. Paved, the type of thermal resistance asphalt mixture is modified asphalt mastic gravel mixture, thermal resistance asphalt mixture includes basalt coarse aggregate, ceramic coarse aggregate, basalt fine aggregate, mineral powder and modified asphalt The particle size of the ceramic coarse aggregate is 4.75-9.50mm, and the volume of the ceramic coarse aggregate accounts for 60% of the total volume of aggregates with a particle size of 4.75-9.5mm in the thermal resistance asphalt mixture; the diameter of the heat conducting rod 4 is 25mm , the length of the heat conduction rods 4 penetrating into the asphalt pavement 1 is 14cm; the heat conduction rods 4 are heat conduction ste...

Embodiment 3

[0091] This embodiment 3 provides a cooling asphalt pavement structure. The structure principle of the pavement structure described in this embodiment 3 is basically the same as that of the pavement structure in embodiment 1. The difference is that the upper layer 13 uses a heat-resistant asphalt mixture. Paved, the type of thermal resistance asphalt mixture is modified asphalt mastic gravel mixture, thermal resistance asphalt mixture includes basalt coarse aggregate, ceramic coarse aggregate, basalt fine aggregate, mineral powder and modified asphalt The particle size of the ceramic coarse aggregate is 4.75-9.50mm, and the volume of the ceramic coarse aggregate accounts for 80% of the total volume of aggregates with a particle size of 4.75-9.5mm in the thermal resistance asphalt mixture; the diameter of the heat conducting rod 4 is 40mm , the length of the heat conduction rod 4 penetrating into the asphalt pavement 1 is 16cm; the heat conduction rod 4 is a heat conduction stee...

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Abstract

The invention discloses a cooling asphalt pavement structure and a construction method thereof. The cooling asphalt pavement structure comprises an asphalt surface layer, and heat conducting rods are uniformly inserted into the asphalt surface layer; the asphalt surface layer comprises a lower surface layer, a middle surface layer and an upper surface layer which are sequentially laid from bottom to top; the upper surface layer is formed by paving a thermal resistance asphalt mixture, and the heat conduction rods are vertically embedded into the lower surface layer, the middle surface layer and the upper surface layer; according to the invention, the heat conduction rods are uniformly inserted into the asphalt surface layer, and the upper surface layer is formed by paving a thermal resistance asphalt mixture; through heat resistance of the upper surface layer and heat conduction of the heat conduction rods, the temperature of the asphalt pavement is effectively reduced, and the temperature gradient is reduced; and meanwhile, the heat conduction rods can play a role of a pile foundation, and the overall strength and the high-temperature deformation resistance of the pavement structure are effectively improved.

Description

technical field [0001] The invention belongs to the technical field of road engineering, in particular to a cooling asphalt pavement structure and a construction method thereof. Background technique [0002] With the development of the economy, asphalt pavement has become the main form of high-grade highways and urban roads. Because asphalt materials are sensitive to temperature, high-temperature diseases such as rutting are prone to occur when the temperature rises, which seriously affects the performance and service life of the pavement; at the same time, excessively high asphalt pavement temperature is also one of the main factors causing the urban heat island effect; Taking more effective technical measures to reduce the temperature of the pavement and at the same time enhance the anti-rutting ability of the asphalt pavement is of great significance to improve the performance and service life of the asphalt pavement and alleviate the urban heat island effect. [0003] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32E01C11/24
CPCE01C7/325E01C11/24
Inventor 王晓威杨子凡任家兴李王鑫霍润科田泽宇
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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