Special-purpose waterproof bonding layer for drainage asphalt pavement and design method thereof

A technology of waterproof adhesive layer and drainage asphalt, which can be applied to cohesive pavement, roads, roads and other directions paved on site. It can solve the problems of large void ratio, water damage, and easy water seepage, so as to improve service life and enhance durability. sexual effect

Inactive Publication Date: 2008-07-09
WUHAN UNIV OF TECH
View PDF0 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, after the construction of the densely graded asphalt concrete as the substructure of drainage asphalt concrete, most of them are required to reach a maximum theoretical density of 92%, that is, the porosity of the on-site asphalt pavement is 8%. , the asphalt pavement is further compacted to reach the design porosity; however, when the compaction of the asphalt pavement is poorly controlled, the on-site porosity is higher than 8%, and water seepage is easy, resulting in a large actual porosity in some areas and poor construction qua

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Special-purpose waterproof bonding layer for drainage asphalt pavement and design method thereof
  • Special-purpose waterproof bonding layer for drainage asphalt pavement and design method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The structural layer of the special waterproof adhesive layer for drainage asphalt pavement embodiment 1 is laid as follows:

[0039] 1. Clean the AC-20 densely graded asphalt concrete pavement, and use a sprinkler to clean the pavement in a large area to remove the residual mud and dust in the depth of the pavement structure. After the pavement is dry, keep the construction section of the drainage asphalt pavement from being polluted.

[0040] 2. Spray the silicone rubber waterproofing agent in three times by manual spraying, the first time spraying along the driving direction, the dosage is 100g~200g / square meter, the silicone rubber waterproofing agent first solidifies and forms a film at the bottom; every 2~6 hours Finally, spray along the reverse direction of the vehicle for the second time, with an amount of 100g-200g / square meter, so that the silicone rubber waterproofing agent can be cured to form a film in the middle. After another 2 to 6 hours, spray along the...

Embodiment 2

[0044] According to the T0703-1993 wheel rolling method in the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering", four groups of rutting plate-shaped specimens of densely graded asphalt concrete AC-20 were produced. Its porosity is 6-8%. The first group of specimens were not treated, and the second, third and fourth groups of specimens were sprayed with 0.4kg / m 2 、0.6kg / m 2 and 0.9kg / m 2 Silicone rubber waterproofing agent, and then according to the provisions of T 0730-2000, conduct water penetration test on all test pieces. The test results are shown in Figure 3. When the amount of silicone rubber waterproofing agent exceeds 400g / m 2 When above, the water seepage coefficient of AC-20 densely graded asphalt mixture can be reduced to zero; the water seepage coefficient before and after artificial spraying of the silicone rubber waterproofing agent in Example 1 is listed in Table 1.

Embodiment 3

[0046] Asphalt Pavement Construction Depth Test

[0047] This test adopts the sand laying method to measure the change of the structure depth before and after spraying the anti-seepage agent. The operation steps are as follows: spread the known volume of standard sand on the asphalt road surface, and push the sand as flat as possible with a push plate with a rubber sheet attached to the bottom. For a circle, measure the diameter of the circle in the vertical direction and take the average value. The ratio of the volume of sand to the average area of ​​the paved circle is the structural depth of the pavement. The surface texture depth TD is calculated as follows:

[0048] TD=1000V / (πD 2 / 4)

[0049] In the formula: TD-surface structure depth of mixture, mm

[0050] V - volume of sand, 25cm 3

[0051] D-average diameter of flattened sand, mm

[0052] According to the wheel rolling method of T0703-1993 in the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Eng...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention provides a waterproof and cohesive layer exclusive for porous asphalt pavement, which comprises a structure as: a porous asphalt concrete surface layer (1), an emulsification asphalt cohesive layer (2) and a dense grad asphalt concrete surface layer (3) are orderly arranged from the upper side to the lower side, also a silicon rubber waterproof agent filtration layer (4) is arranged on or infiltrated the dense grad asphalt concrete surface layer (3). The invention can improve the waterproof property of the dense grad asphalt concrete surface layer under the porous asphalt concrete road surface, strengthens the cohesive property between the dense grad asphalt concrete surface layer and the porous asphalt concrete surface layer, prevents any moving between the porous asphalt surface layer and the dense grad asphalt concrete surface layer, effectively avoids water damages on the asphalt mixture which is resulted by rain infiltrating through the dense grad asphalt concrete surface layer, improves the waterproof property of the dense grad asphalt concrete, and improves the endurance of the dense grad asphalt surface layer of high-speed road and lengthens whole road surface service life.

Description

technical field [0001] The invention relates to a waterproof bonding layer, in particular to a special waterproof bonding layer for drainage asphalt pavement and a design method thereof. Background technique [0002] With the rapid development of highway mileage in our country, drainage asphalt pavement is more and more widely used in my country as a drainage functional pavement structure. Drainage asphalt pavement can not only effectively reduce the water mist and glare caused by surface water, but also It provides sufficient surface roughness and can reduce driving noise. In this pavement structure, it is required to set a structural layer under the drainage asphalt surface layer that takes into account waterproof and bonding functions. Generally speaking, after the construction of densely graded asphalt concrete as the substructure of drainage asphalt concrete, most of them require a maximum theoretical density of 92%, that is, the porosity of the on-site asphalt pavement ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E01C7/26
Inventor 吴少鹏曹庭维李波刘刚陈美祝黄旭刘至飞张涛
Owner WUHAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap