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Tunnel bituminous pavement clearing functional layer

An asphalt pavement and functional layer technology, applied in the field of paving materials and structures, can solve the problems of deep blackness, difficult to meet the requirements of tunnel use, low bonding strength, etc., to achieve improved adhesion, excellent road surface functionality, tensile strength The effect of improving the pull bond strength

Active Publication Date: 2012-04-18
重庆市智翔铺道技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing pavement functional layer uses asphalt cementing materials and ordinary gravel materials, and its dark appearance and low bonding strength at the interface make it difficult to meet the requirements of bright colored pavement in tunnels

Method used

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  • Tunnel bituminous pavement clearing functional layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A brightly colored functional layer for tunnel asphalt pavement, which includes brightly colored cementitious materials and brightly colored gravel materials; among them, brightly colored cementitious materials are composed of the following components A and B in a mass ratio of 1:1 It is mixed, and the percentage of each substance is calculated according to the mass percentage of the component:

[0035] A component:

[0036] 25% methyl methacrylate, 30% hydroxyethyl methacrylate

[0037] Butyl methacrylate 5%, calcium carbonate 20%,

[0038] N,N-dimethyl-p-toluidine 5%, titanium dioxide 10%, fumed silica 5%;

[0039] B component:

[0040] 40% methyl methacrylate, 10% hydroxyethyl methacrylate

[0041] Butyl methacrylate 10%, calcium carbonate 30%,

[0042] Dibenzoyl peroxide 3%, titanium dioxide 5%, fumed silica 2%.

[0043] The bright colored crushed stone material is a commercially available artificial white stone that meets the performance indicators shown in the following table:...

Embodiment 2

[0050] A brightly colored functional layer for tunnel asphalt pavement, which includes brightly colored cementitious materials and brightly colored crushed stone materials; among them, the brightly colored cemented material is composed of the following components A and B in a mass ratio of 1: 1 It is mixed, and the percentage of each substance is calculated according to the mass percentage of the component:

[0051] 40% methyl methacrylate, 20% hydroxyethyl methacrylate

[0052] Butyl methacrylate 9%, calcium carbonate 20%,

[0053] N,N-dimethyl-p-toluidine 2%, titanium dioxide 6%, fumed silica 3%;

[0054] B component:

[0055] Methyl methacrylate 30%, hydroxyethyl methacrylate 20%

[0056] 10% butyl methacrylate, 29% calcium carbonate,

[0057] Dibenzoyl peroxide 2%, titanium dioxide 6%, fumed silica 3%.

[0058] The bright colored crushed stone material is a commercially available artificial white stone that meets the performance indicators shown in the following table:

[0059] Min...

Embodiment 3

[0065] A brightly colored functional layer for tunnel asphalt pavement, which includes brightly colored cementitious materials and brightly colored crushed stone materials; among them, the brightly colored cemented material is composed of the following components A and B in a mass ratio of 1: 1 It is mixed, and the percentage of each substance is calculated according to the mass percentage of the component:

[0066] Methyl methacrylate 30%, hydroxyethyl methacrylate 12%

[0067] 20% butyl methacrylate, 30.5% calcium carbonate,

[0068] N,N-dimethyl-p-toluidine 2%, titanium dioxide 5%, fumed silica 0.5%;

[0069] B component:

[0070] Methyl methacrylate 10%, hydroxyethyl methacrylate 32%

[0071] 20% butyl methacrylate, 28% calcium carbonate,

[0072] Dibenzoyl peroxide 5%, titanium dioxide 4%, fumed silica 1%.

[0073] The bright colored crushed stone material is a commercially available artificial white stone that meets the performance indicators shown in the following table:

[0074] ...

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Abstract

The invention aims at providing a tunnel bituminous pavement clearing functional layer, characterized in that: the layer comprises a clearing binder material and a clearing macadam material, wherein, the clearing binder material comprises a component A and a component B with the weight ration of A to B being 1 to 1, and the clearing macadam material comprises market artificial white stones satisfying the specific performance indexes. The invention has the advantages of excellent rutting resistance, low temperature crack resistance and water damage resistance, wherein, the drawing and bonding intensity of the clearing binder material is greatly increased, the specially-produced clear macadam has bright color and good angularity, the adhesiveness between the bonding material and the stones is greatly improved, thus the structural integrity and functionality of the surface of the pavement are excellent.

Description

technical field [0001] The invention relates to pavement materials and structures for tunnel pavement engineering, in particular to a brightening functional layer of tunnel asphalt pavement. technical background [0002] The road tunnel is a relatively closed, narrow tubular environment. There is no sunshine and rain in the tunnel as in the general road section outside the tunnel. The temperature is relatively stable throughout the year, with small temperature changes and small temperature differences. However, the humidity inside the tunnel is relatively humid and the groundwater is abundant. The air mobility in the tunnel is small, and the air is easily polluted; there is no sunshine in the tunnel, and it is in darkness all year round, with low visibility. Therefore, the pavement, maintenance requirements and technologies of tunnel pavement are quite different from the pavement structure of general expressway sections. [0003] The technical advantages of asphalt pavemen...

Claims

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Application Information

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IPC IPC(8): C04B26/04
Inventor 张华郝增恒黄磊徐光红王民高博
Owner 重庆市智翔铺道技术工程有限公司
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