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High-deformation-resistant asphalt pavement structure

An asphalt pavement, anti-deformation technology, applied to roads, roads, on-site cohesive pavements, etc., can solve problems such as low asphalt grade, lateral shearing of wrapping, rutting deformation, etc.

Inactive Publication Date: 2018-04-17
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the rapid increase of traffic volume, heavy load, and overloaded vehicles, the above-mentioned traditional semi-rigid pavement has large rutting deformation, waves, Packing and Transverse Shear Failure

Method used

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  • High-deformation-resistant asphalt pavement structure
  • High-deformation-resistant asphalt pavement structure
  • High-deformation-resistant asphalt pavement structure

Examples

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Embodiment 1

[0034] Such as figure 1 A high-deformation-resistant asphalt pavement structure is shown. The pavement structure includes a high-deformation-resistant asphalt pavement, a deformation-resistant semi-rigid base and a subbase in sequence from top to bottom; wherein, the asphalt pavement includes a surface wear layer, and the middle The surface layer and the lower layer; the semi-rigid base layer is anti-deformation cement stabilized crushed stone; the sub-base layer is graded crushed stone.

[0035] Among them, the surface wear layer is made of SMA-13 ​​graded asphalt mixture with a thickness of 35-50 mm, and the material mass ratio is: SBS modified asphalt: first mineral material: lignin fiber = 6.0-6.2:100:0.3-0.4, The nominal maximum particle size is 13.2mm.

[0036] Among them, the middle surface layer adopts Superpave-20 graded asphalt mixture, the thickness is 50-70mm, and the material mass ratio is: SBS modified asphalt: the second mineral material: PR PLAST S anti-ruttin...

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Abstract

The invention discloses a high-deformation-resistant asphalt pavement structure. The high-deformation-resistant asphalt pavement structure is paved on a soil matrix and comprises an asphalt surface layer (1), a base layer (2) and a subbase layer (3) which are sequentially arranged from top to bottom, wherein the asphalt surface layer (1) comprises a surface abrasion layer (11), a middle surface layer (12) and a lower surface layer (13), the surface abrasion layer (11) adopts SMA-13 graded asphalt mixture, the middle surface layer (12) adopts Superpave-20 graded asphalt mixture, and the lower surface layer (13) adopts Superpave-25 graded asphalt mixture; the base layer (2) is a deformation-resistant semi-rigid base layer and adopts deformation-resistant cement stabilized macadam; and the subbase layer (3) adopts graded broken stone. The high-deformation-resistant asphalt pavement structure disclosed by the invention is not liable to have rutting deformation and transverse shear deformation, so that the service life of a road is long.

Description

technical field [0001] The invention belongs to the technical field of semi-rigid pavement structures, in particular to a high-deformation-resistant asphalt pavement structure that is not prone to rutting deformation and transverse shear deformation and has a long road service life. Background technique [0002] Since the 1980s, with the rapid development of my country's economy, the mileage of high-grade highways has continued to increase. In order to meet the heavy traffic and heavy load requirements of high-grade highways, a "semi-rigid pavement" with inorganic binder stabilized aggregates as the base layer and asphalt concrete as the surface layer has been widely used in high-grade highways. [0003] The structure of the semi-rigid pavement is as described in the Chinese invention patent "A kind of asphalt pavement structure" (application number: 201510914731.1, application date: 2015.12.13), including surface layer, connecting layer, base layer, subbase layer and soil l...

Claims

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Application Information

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IPC IPC(8): E01C7/26E01C7/35C04B26/26
CPCE01C7/262C04B26/26C04B2111/00612C04B2111/0075E01C7/353C04B16/02C04B14/04C04B14/28C04B2111/20
Inventor 吴正光夏炎曹佳伟王亚昀王欣悦
Owner YANGZHOU UNIV
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