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Tunnel asphalt pavement bright-color functional layer based on bright-color gravel

A technology of asphalt pavement and functional layer, which is applied in the direction of roads, roads, on-site paved coagulation pavements, etc. It can solve the problems of deep variability of stone materials and unsatisfactory appearance color of stone materials, etc., achieve bright color and improve light reflection ability , Enhance the effect of lighting level

Active Publication Date: 2013-08-28
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 gravel materials used in the existing pavement functional layer are generally basalt, limestone, diabase, granite, etc. The variability of the stone material and the darker stone appearance color make it difficult to meet the use requirements of bright colored pavement in the tunnel

Method used

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  • Tunnel asphalt pavement bright-color functional layer based on bright-color gravel
  • Tunnel asphalt pavement bright-color functional layer based on bright-color gravel
  • Tunnel asphalt pavement bright-color functional layer based on bright-color gravel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A bright-colored functional layer of tunnel asphalt pavement based on bright-colored gravel, which includes cementing materials and bright-colored gravel materials; wherein, the bright-colored gravel material adopts the performance indicators shown in the following table Commercially available artificial white stone:

[0027] Bright colored crushed stone material index detection value Moh's hardness 8.0 Los Angeles wear value (%) 13 Polishing value PSV 50 Crushing value (%) 15 color White

[0028] The bright-colored crushed stone material adopts a particle size of 1~3mm, a crushed stone spreading coverage rate of 80%, and a stone preheating temperature of 160°C;

[0029] Among them, the cementing material adopts hot-melt modified asphalt, and its specific index requirements are shown in the table below:

[0030] Cementitious material index detection value Penetration (100g, 25°C, 5s) 0.1mm 40.0 Ductil...

Embodiment 2

[0036] A bright-colored functional layer of tunnel asphalt pavement based on bright-colored gravel, which includes cementing materials and bright-colored gravel materials; wherein, the bright-colored gravel material adopts the performance indicators shown in the following table Commercially available artificial white stone:

[0037] Bright colored crushed stone material index detection value Moh's hardness 7.0 Los Angeles wear value (%) 18 Polishing value PSV 47 Crushing value (%) 20 color White

[0038] The bright-colored crushed stone material adopts a particle size of 1~3mm, a crushed stone spreading coverage rate of 80%, and a stone preheating temperature of 120°C;

[0039] Among them, the cementing material is modified emulsified asphalt, and its specific index requirements are shown in the table below:

[0040]

[0041] During construction, the cementing material is sprayed evenly on the surface of the tunnel pavement by ...

Embodiment 3

[0046] A bright-colored functional layer of tunnel asphalt pavement based on bright-colored gravel, which includes cementing materials and bright-colored gravel materials; wherein, the cementing material is decolorized asphalt, and its specific index requirements are shown in the following table:

[0047]

[0048] The bright colored crushed stone material is a commercially available artificial white stone that meets the performance indicators shown in the following table:

[0049] Bright colored crushed stone aggregate detection value Moh's hardness 7.5 Los Angeles wear value (%) 15 Polishing value PSV 48 Crushing value (%) 18 color White

[0050] During construction, the cementing material is sprayed evenly on the surface of the tunnel pavement by the sprinkler at a slow speed, and the spraying amount is 0.7~1.5kg / m 2, Sprinkle the preheated bright-colored gravel material particles within 30 minutes, and after the effective co...

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Abstract

The invention aims to provide a tunnel asphalt pavement bright-color functional layer based on bright-color gravel. The tunnel asphalt pavement bright-color functional layer is characterized by comprising a bright-color gravel material and a cementitious material, wherein the bright-color gravel material adopts a commercial artificial white stone material meeting a specific performance requirement index. The tunnel asphalt pavement bright-color functional layer has excellent rutting resistance and water damage resistance. The specially-made bright-color gravel has bright color and luster and excellent angularity, so that the excellent adhesivity of specially-made bright-color gravel to an asphalt-based cementitious material is achieved, and excellent structural integrity and pavement functionality are achieved.

Description

technical field [0001] The invention relates to a pavement structure for tunnel pavement engineering, in particular to a bright colored functional layer of tunnel asphalt pavement based on bright colored gravel. 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 advantag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/18
Inventor 黄磊郝增恒张华詹成根王民吴文军
Owner 重庆市智翔铺道技术工程有限公司
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