Water-permeable asphalt pavement structure capable of suppressing road surface reflection cracks

A technology for asphalt pavement and reflective cracks, which is applied to roads, roads, pavement details, etc., can solve problems such as reflective cracks that are prone to occur, and achieve the effects of inhibiting the generation and extension of reflective cracks, good adhesion, and improved shear resistance

Inactive Publication Date: 2019-04-12
SHANGHAI PUDONG ROAD & BRIDGE GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its disadvantage is that it is very prone to reflective cracks

Method used

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  • Water-permeable asphalt pavement structure capable of suppressing road surface reflection cracks
  • Water-permeable asphalt pavement structure capable of suppressing road surface reflection cracks
  • Water-permeable asphalt pavement structure capable of suppressing road surface reflection cracks

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Embodiment 1

[0048] When the nominal maximum particle size of the special graded modified asphalt mixture layer is 19mm, or 13.2mm, the thickness of the high-viscosity asphalt mixture is 30mm-50mm, the void ratio is 8%-12%, and it is stabilized by aggregates, fillers, and fibers. The high-viscosity modified asphalt binder is composed of No. 70 asphalt and modifier, and the modifier accounts for 10% to 13% of the total mass of the high-viscosity modified asphalt binder; aggregate It is composed of coarse aggregate and fine aggregate. The coarse aggregate is made of diabase, basalt or limestone, the fine aggregate is made of limestone; the filler is made of limestone slag; It is 0.1%-0.6% of the mass of the mixture. The sealing layer 4 adopts SBS modified emulsified asphalt slurry sealing layer, the thickness is 0.5mm~1.0mm.

[0049] The permeable asphalt mixture layer adopts OGFC-13 type open graded asphalt mixture layer, the thickness is 40mm~50mm, and the void ratio is 18%~22%. The mass o...

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Abstract

The invention relates to a water-permeable asphalt pavement structure capable of suppressing road surface reflection cracks. The water-permeable asphalt pavement structure comprises a treated old cement concrete pavement, an anti-cracking bonding layer, a specially-graduated modified asphalt mixture layer, a sealing layer and a water-permeable asphalt mixture layer from the lower side to the upperside, wherein the anti-cracking bonding layer comprises an anti-cracking bond bonded to a junction of adjacent cement slabs and modified emulsified asphalt adhesive layer oil spread on the anti-cracking bond; the specially-graduated modified asphalt mixture layer is prepared from one of a GSOG-20 asphalt mixed filter material or a GSOG-13 asphalt mixture; the sealing layer is prepared from one ora mixture of several of a modified emulsified asphalt layer, a hot asphalt layer or a slurry sealing layer; the water-permeable asphalt mixture layer is a GSOG-13 asphalt mixture. According to the invention, the service life of the pavement structure can be prolonged and the service condition of the pavement structure can be improved, and adaption to the current fashionable water-permeable asphalt pavement structure can be achieved.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to a water-permeable asphalt pavement structure for suppressing reflective cracks on the road surface. Background technique [0002] In recent years, with the rapid development of my country's national economy, the country has invested heavily in infrastructure construction, and major and medium-sized cities across the country are also constructing urban municipal roads. At the same time, among the highways and urban roads built in the early days of our country, a considerable part of the cement concrete pavement has approached or exceeded the design period. The reason is that the road surface is damaged and the quality of use has declined, which can no longer adapt to the development of modern transportation. [0003] For the repair and transformation of cement concrete pavement, the most commonly used technical measure is to add asphalt mixture surface layer - after layi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32E01C11/22
CPCE01C7/32E01C11/225
Inventor 闫国杰周维维许严施曙东粘本鹏徐韵淳邱轶崔晨石剑邓国民袁月王腾飞夏庆宇马利志李交黄安
Owner SHANGHAI PUDONG ROAD & BRIDGE GRP CO LTD
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