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Pavement structure for structure transfer and performance recovery of semi-rigid base asphalt pavement

A semi-rigid base, asphalt pavement technology, applied in road repair, roads, roads, etc., can solve the problems of secondary environmental pollution, waste of resources, occupation of land resources, etc., to save resources, prevent secondary pollution, and prevent rainwater. Penetration effect

Inactive Publication Date: 2010-07-07
江苏世丰企业管理咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the large amount of original pavement materials produced in the process of asphalt pavement maintenance and reconstruction, they are generally disposed of as garbage or used as fillers. This extensive treatment method not only occupies a large amount of valuable land resources, but also causes secondary pollution to the environment. ; At the same time, the original pavement material has huge usable value (residual value), and its disposal or downgrading treatment has caused a serious waste of resources

Method used

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  • Pavement structure for structure transfer and performance recovery of semi-rigid base asphalt pavement
  • Pavement structure for structure transfer and performance recovery of semi-rigid base asphalt pavement
  • Pavement structure for structure transfer and performance recovery of semi-rigid base asphalt pavement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] see figure 1 , figure 2 , a pavement structure for semi-rigid base asphalt pavement structure conversion and performance recovery, the semi-rigid base asphalt pavement is composed of the original asphalt pavement semi-rigid base 1, the original asphalt pavement surface layer 2, the original asphalt pavement semi-rigid base 1 The undamaged part is the undamaged semi-rigid base 3 of the original asphalt pavement, and the damaged part of the semi-rigid base 1 of the original asphalt pavement is the damaged semi-rigid base 4 of the original asphalt pavement, which is characterized in that the undamaged semi-rigid base 3 The above is the cold recycled semi-flexible base layer 5 after structural conversion, the modified emulsified asphalt slurry seal layer 6 is on the cold recycled semi-flexible base layer 5, and the modified emulsified asphalt slurry seal layer 6 is the lower layer of the asphalt pavement 7, the asphalt pavement The lower layer 7 is a modified emulsified a...

Embodiment 2

[0039] see figure 1 , figure 2 , a pavement structure used for semi-rigid base asphalt pavement structure conversion and performance recovery, the construction method of which is the same as in Example 1.

[0040] The thickness of the undamaged semi-rigid base 3 of the original asphalt pavement is 11 cm.

[0041] The cold recycled semi-flexible base layer 5 is mixed with the following materials by weight, milling material: 100 parts; new aggregate: 21 parts; asphalt: 3.1 parts; inorganic binder: 2.0 parts; water: 12 parts The milling material is composed of the material obtained from the damaged semi-rigid base layer 4 of the original asphalt pavement, the material obtained from the milling original asphalt surface layer 2, and the material obtained from the damaged semi-rigid base layer 4 of the original asphalt pavement and The mass ratio between the materials obtained by milling the original asphalt surface layer 2 is 100:65; the asphalt is foamed asphalt, which is forme...

Embodiment 3

[0048] see figure 1 , figure 2 , a pavement structure used for semi-rigid base asphalt pavement structure conversion and performance recovery, the others are the same as in Embodiment 1.

[0049] The semi-rigid base layer 1 of the original asphalt pavement has been completely damaged.

[0050] The cold recycled semi-flexible base layer 5 is mixed with the following materials by weight, milling material: 100 parts; new aggregate: 15 parts; asphalt: 2.8 parts; inorganic binder: 1.7 parts; water: 10 parts The milling material is composed of the material obtained from all semi-rigid bases 1 of the original asphalt pavement and the material obtained from milling the original asphalt surface layer 2, and the material obtained from all semi-rigid bases 1 of the original asphalt pavement and milled The mass ratio between the materials obtained from the original asphalt surface layer 2 is 100:45; the asphalt is foamed asphalt, which is formed by mixing high-temperature hot-melt asph...

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Abstract

The invention discloses a pavement structure for structure transfer and performance recovery of a semi-rigid base asphalt pavement, which is characterized in that a transferred-structural cold recycled semi-flexible base is on the non-damaged semi-rigid base of the original asphalt pavement; a modified asphalt emulsion slurry seal layer is coated on a cold recycled semi-flexible base; an asphalt pavement bottom layer is on the modified asphalt emulsion slurry seal layer; a modified asphalt emulsion bonding layer is on the asphalt pavement bottom layer; and a surface abrasion layer is on the modified asphalt emulsion bonding layer. The construction method comprises the following steps of: a) cleaning the semi-rigid base asphalt pavement; and b) carrying out the structure transfer and performance recovery of the pavement. The invention has the advantages that the structure transfer of the damaged semi-rigid base of the original asphalt pavement and the damaged surface layer is realized, and the performance of the pavement is recovered and improved, the repaired pavement had good high-temperature stability and less water damage, and the cracking of the base can be effectively prevented, stopped or slowed down; not only the original pavement material is fully used, but also the energy is saved, and the second pollution on the environment is prevented; and the service function of the original pavement is recovered or improved, and the service life of the pavement is prolonged.

Description

technical field [0001] The present invention relates to a pavement structure, in particular to a new pavement structure used in reconstruction or major and medium repair projects of highways, national and provincial arterial roads, and in particular to a semi-rigid base asphalt pavement structure conversion and Pavement structure for performance recovery. Background technique [0002] Since my country's first expressway was completed and opened to traffic in 1988, by the end of 2008, the total mileage of expressways had exceeded 60,000 kilometers, most of which were asphalt pavements. The roads built in the 1990s have entered the stage of major and medium repairs one after another. However, the real service life of asphalt pavements in our country is far from reaching the design life. Generally, it needs to be repaired within 3 to 5 years after it is opened to traffic. In addition, most of the bases in the pavement structure of my country's expressways use semi-rigid bases. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C23/06E01C23/12C04B26/26
Inventor 兰超李明张荣鹍陈仕周慕海瑞徐栋良
Owner 江苏世丰企业管理咨询有限公司
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