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Double-layer drainage asphalt concrete pavement structure

A technology of concrete pavement and asphalt concrete, which is applied to cohesive pavement paved on site, roads, roads, etc., can solve the problems of poor frost heave resistance, insufficient pavement durability, and low strength, and achieve pavement frost heave resistance As well as the effects of improved durability, improved driving comfort, and improved deformation performance

Pending Publication Date: 2020-05-12
CHINA TIESIJU CIVIL ENG GRP CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a double-layer drainage asphalt concrete pavement structure, which is used to solve the problems of high comprehensive performance requirements of the current permeable concrete pavement, easy clogging of the gaps of the permeable pavement, low strength, insufficient pavement durability, and poor frost heave resistance

Method used

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  • Double-layer drainage asphalt concrete pavement structure
  • Double-layer drainage asphalt concrete pavement structure
  • Double-layer drainage asphalt concrete pavement structure

Examples

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Embodiment 1

[0061] The SBS product used in the examples of the present invention is LG501S linear structure, the S / B block ratio is 31:69; the matrix asphalt is the AH-70A asphalt produced by Sinopec Zhenhai Refining & Chemical Co., Ltd., rubber oil is used as the extension agent, and rubber oil is used as the stabilizer Industrial sulfur and rubber powder are 30 mesh old tire rubber powder particles. The dosage of each component is calculated based on the mass of base asphalt, wherein the dosage of SBS is 6%, the dosage of rubber oil is 2.5%, the dosage of sulfur is 0.15%, and the dosage of old tire rubber powder is 10% (wherein, The amount of SBS added is based on the mass of base asphalt, the amount of old tire rubber powder added is based on the mass of SBS modified asphalt, and the amount of SBS modified asphalt includes the sum of the mass of SBS, base asphalt, extender and stabilizer).

[0062] In the embodiment of the present invention, the specific preparation process of SBS rubb...

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Abstract

The invention provides a double-layer drainage asphalt concrete pavement structure. The pavement structure sequentially comprises an upper surface layer fine-grained water-permeable asphalt concrete layer, a middle surface layer coarse-grained water-permeable asphalt concrete layer, a lower surface layer dense-graded asphalt concrete layer, a base layer and a soil base layer from top to bottom, the upper surface layer fine-grained water-permeable asphalt concrete layer comprises PAC13 water-permeable asphalt concrete or PAC10 water-permeable asphalt concrete; and the middle surface layer coarse-grained water-permeable asphalt concrete layer comprises PAC20 permeable asphalt concrete or PAC16 permeable asphalt concrete. SBS rubber powder compound modified asphalt is adopted as a cementing material on the upper surface layer and the middle surface layer, and an asphalt concrete double-layer drainage structure with a thin upper part and a thick lower part is adopted, so that the pavementdeformation performance is improved, the driving comfort is improved, the frost heaving resistance and durability of the pavement are improved, the pavement noise can be reduced, and environmental friendliness is achieved; the blockage of pores of the pervious asphalt concrete is delayed, and the durability of the pavement is improved.

Description

technical field [0001] The invention belongs to the technical field of permeable asphalt concrete pavement, and in particular relates to a double-layer drainage asphalt concrete pavement structure. Background technique [0002] Permeable pavement is mainly divided into permeable brick pavement, permeable asphalt concrete pavement and permeable cement concrete pavement. Among them, permeable brick pavement and permeable cement concrete pavement are mainly suitable for squares, parking lots, sidewalks and roads with small traffic volume and load, such as building and community roads, non-motor vehicle lanes of municipal roads, etc. Permeable asphalt concrete pavement In addition to being used in the above situations, it can also be used in urban motorways and even high-grade highways. [0003] In the actual application of permeable asphalt concrete, there are still many key technical problems that need to be solved urgently, such as insufficient strength, frost heave damage a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32E01C11/22C04B26/26C04B38/00
CPCC04B26/26C04B2111/0075E01C7/325E01C11/226C04B24/2676C04B18/22C04B2103/0068C04B14/00C04B38/0041
Inventor 周江查显卫肖飞鹏辛颖王金刚宗启迪郭瑞
Owner CHINA TIESIJU CIVIL ENG GRP CO LTD
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