High-identification-property bituminous pavement material and method for paving same

An asphalt pavement, recognition technology, applied to the coagulation pavement, roads, roads and other directions paved on site, can solve the problems of unsatisfactory lighting effect, poor pavement recognition, low road alignment standards, etc.

Inactive Publication Date: 2012-08-15
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, high-grade highways are generally car-only roads, with good road alignment and surface performance, and basically realize fully enclosed management. There are no roads passing through villages, level intersections, etc. The comfort is high; but for low-grade roads, there are generally no lighting facilities, the road alignment standard is low, the slope is steep and sharp, and most of them are cross-village roads, pedestrians, non-motor vehicles and motor vehicles are mixed. Poor recognition and great potential safety hazards
The same is true for

Method used

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  • High-identification-property bituminous pavement material and method for paving same
  • High-identification-property bituminous pavement material and method for paving same

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Experimental program
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Effect test

specific Embodiment approach 1

[0021] The particle size of the glass aggregate is 3-5mm, and the particle density is required to be 2.4g / cm 3 , bulk density is 1.3g / cm 3 . The coefficient of thermal expansion is 818×10 -6 cm / °C, the softening point is 718°C.

[0022] The high-visibility asphalt pavement material of this embodiment is laid according to the following steps: 1. Take 81 parts of limestone mineral material, 6 parts of asphalt, 5 parts of limestone mineral powder and 8 parts of glass aggregate according to the weight fraction ratio; 2. Mix the ore Mix aggregate and glass aggregate and heat to 180-190°C, dry mix for 30s, then add asphalt at 155°C-180°C and mix for 90s, then add mineral powder at room temperature and mix for 90s to obtain glass aggregate asphalt mixture; 3. The glass aggregate asphalt mixture is mixed, paved, and rolled to obtain a high-visibility asphalt pavement; step 3 glass aggregate asphalt mixture is mixed by batch mixing; step 3 uses the whole Paving, the paving temperat...

specific Embodiment approach 2

[0024] The particle size of the glass aggregate is 3-5mm, and the particle density is required to be 2.6g / cm 3 , bulk density is 1.4g / cm 3 . The coefficient of thermal expansion is 912×10 -6 cm / °C, the softening point is 738°C.

[0025] The difference between this embodiment and specific embodiment 1 is that the high-visibility asphalt pavement material is made of 85 parts of limestone mineral material, 5 parts of asphalt, 4 parts of limestone mineral powder and 6 parts of glass aggregate by weight fraction. The gradation of medium ore materials adopts AC-16C gradation, and other implementation steps are the same as those in Embodiment 1.

[0026] After the high-visibility asphalt pavement paved in this embodiment is opened to traffic for 3 months, the CR-140 color difference meter is used to test the brightness of the road surface, and at 1000m 2 The road surface was tested at 10 points. The road brightness was 72, 71, 75, 78, 80, 75, 72, 73, 76, and 75. The average value...

specific Embodiment approach 3

[0027] The particle size of the glass aggregate is 3-5mm, and the particle density is required to be 2.4g / cm 3 , bulk density is 1.4g / cm 3 . The coefficient of thermal expansion is 818×10 -6 cm / °C, the softening point is 718°C.

[0028] The difference between this embodiment and the specific embodiment 1 is that the high-visibility asphalt pavement material is made of 82 parts of limestone mineral material, 5.5 parts of asphalt, 5.5 parts of limestone mineral powder and 7 parts of glass aggregate. The gradation of medium ore materials adopts AC-13C gradation, and other implementation steps are the same as those in Embodiment 1.

[0029] After the high-visibility asphalt pavement paved in this embodiment is opened to traffic for 3 months, the CR-140 color difference meter is used to test the brightness of the road surface, and at 1000m 2 Tested at 10 points within the road surface, the road brightness was 74, 76, 76, 75, 79, 76, 78, 75, 77, 75, the average value was 76.1, a...

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Abstract

The invention belongs to the field of road engineering and relates to a high-identification-property bituminous pavement material and a method for paving the materia, which are suitable for highways of a second grade and below, rural roads, urban secondary roads and urban roads below the urban secondary roads, block roads, community roads, roads of tunnels, overpasses and the like, as well as road sections in which illumination is not available or illumination brightness is insufficient and a certain potential safety hazards of traffic exist. The high-identification-property bituminous pavement material is mainly characterized in that glass aggregates are doped in a bituminous mixture, the brightness of pavement can be increased by utilizing the reflecting performance of the glass aggregates, and thus, the identification property of the pavement at night can be enhanced to a certain extent. The technological method provided by the invention is simple in process and free of additional equipment requirements, waste glass raw materials can be fully utilized, the identification property of the pavement at night is greatly enhanced under the condition of not obviously increasing the construction cost, and thus, the traffic safety of the road is guaranteed in a better way.

Description

technical field [0001] The invention belongs to the field of road engineering, and relates to an asphalt pavement material and a laying method of the asphalt pavement. It is suitable for highways and rural roads of the second grade and below, urban roads, block roads, and community roads of urban secondary trunk roads and below, as well as roads under tunnels and overpasses, where there is no lighting or insufficient lighting brightness, and there is a certain amount of traffic. Road sections with potential safety hazards. Background technique [0002] At present, high-grade highways are generally car-only roads, with good road alignment and surface performance, and basically realize fully enclosed management. There are no roads passing through villages, level intersections, etc. The comfort is high; but for low-grade roads, there are generally no lighting facilities, the road alignment standard is low, the slope is steep and sharp, and most of them are cross-village roads,...

Claims

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Application Information

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IPC IPC(8): C04B26/26E01C7/18
Inventor 张金喜王超宋程
Owner BEIJING UNIV OF TECH
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