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Metal alloy material for self repair of asphalt pavement and application of metal alloy material

A metal alloy and asphalt pavement technology, which is applied in the field of metal alloy materials, can solve the problems of non-continuous asphalt pavement repair and limited number of asphalt pavement repairs, and achieve the effect of convenient self-repair operation, favorable laying and high efficiency

Inactive Publication Date: 2017-05-24
SHANGHAI PUDONG ROAD & BRIDGE CONSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of technology is not sustainable for the repair of asphalt pavement, resulting in a limited number of repairs for asphalt pavement, especially in areas where diseases have occurred, only 1 or 2 automatic repairs can be realized

Method used

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  • Metal alloy material for self repair of asphalt pavement and application of metal alloy material
  • Metal alloy material for self repair of asphalt pavement and application of metal alloy material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 discloses a metal alloy material for asphalt pavement self-repair, the metal alloy material is martensitic steel; the metal alloy material is deformed under the action of external force, and the deformed metal alloy material is subjected to electrical, magnetic or thermal Scan until its temperature exceeds the first preset temperature, and after removing the electric, magnetic or thermal scanning, the metal alloy material returns to the shape before deformation; the metal alloy material is a titanium-based alloy, Ti-Nb-based; the metal alloy material is a strip or wire shape. Wherein, the first preset temperature is the martensitic transformation temperature of the metal alloy material.

[0033] Specifically, the deformation range of the metal alloy material is 0-10%.

[0034] Specifically, the length of the metal alloy material is 0.01-30m, for example: 0.05m, 0.5m, 1.9m, 5.8m, 12m, 19m, 25m or 29m, etc., and the maximum diameter of the cross-section of t...

Embodiment 2

[0037] Such as figure 1 and figure 2 As shown, this embodiment discloses a self-repairable asphalt pavement, including: an asphalt mixture layer 10, including a first asphalt mixture layer 11 and a second asphalt mixture laid on the first asphalt mixture layer 11 The layer 12 ; the metal alloy layer 20 is laid flat in the asphalt mixture layer 10 , including a plurality of the above-mentioned metal alloy materials 21 , and there is a gap between adjacent metal alloy materials 21 .

[0038] Specifically, the weight ratio of the metal alloy layer is 0.2-2, such as 0.3%, 0.8%, 1.2%, 1.6% or 1.9%; in the vertical direction of the length direction of the metal alloy material, the metal alloy The distance between materials is 0.01-0.1 m, such as 0.03 m, 0.05 m, 0.06 m, 0.075 m or 0.09 m.

[0039] Specifically, the metal alloy layer includes multiple rows of metal alloy materials, and the multiple rows of metal alloy materials are along the first direction (ie figure 1 The horizo...

Embodiment 3

[0042] When the asphalt pavement deforms, the metal alloy material in the deformed asphalt pavement also deforms. This embodiment discloses a method for repairing the asphalt pavement in Embodiment 2. Electric, magnetic or thermal scanning is performed at the deformed area of ​​the asphalt pavement, so that the temperature of the metal alloy material in the deformed area exceeds the first preset Temperature, the martensite phase of the metal alloy material disappears, and gradually transforms into the austenite phase. After removing the electric, magnetic or thermal scanning, the metal alloy material changes from the austenite phase to the martensite phase, and recovers before deformation. At the same time, the metal alloy material drives the deformed area of ​​the asphalt pavement to restore the shape before deformation.

[0043] During specific implementation, specific implementation devices for electrical, magnetic or thermal scanning can be specifically selected according ...

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Abstract

The invention discloses a metal alloy material for self repair of an asphalt pavement and application of the metal alloy material. The metal alloy material for self repair of the asphalt pavement is made from martensitic steel. The deformed metal alloy material is subjected to electric or magnetic or thermal scanning till the temperature of the deformed metal alloy material exceeds a first preset temperature, and the metal alloy material restores to the shape before deformation after electric or magnetic or thermal scanning is canceled. The metal alloy material is a titanium-base alloy or a nickel-base alloy or an iron-base alloy and is in a strip or thread shape. The asphalt pavement with a self repair function comprises an asphalt mixture layer and a metal alloy layer which is horizontally laid in the asphalt mixture layer and comprises the various metal alloy materials, and gaps exist between the adjacent metal alloy materials. The metal alloy material for self repair of the asphalt pavement can be used for conducting long-term and sustainable automatic repair on the asphalt pavement, and the asphalt pavement self-repair technology is low in cost and small in influence on the environment.

Description

technical field [0001] The invention relates to the technical field of asphalt pavement, in particular to a metal alloy material for asphalt pavement self-repair and its application. Background technique [0002] For a long time, the repair and maintenance of asphalt roads or pavements has been passive. Once common asphalt pavement diseases such as rutting, cracks, and crowding occur, technical measures such as grouting and filling, milling and resurfacing, and milling and resurfacing are generally used. Repair and maintenance. These traditional and conventional measures and techniques not only consume a lot of manpower, material and financial resources, but also create pollution such as noise, dust and smoke. In addition, conventional road maintenance measures result in unsightly repaired asphalt pavements. [0003] At present, those skilled in the art have developed technologies that can automatically repair asphalt pavement, for example, by implanting repair capsules in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/18
CPCE01C7/187
Inventor 闫国杰施曙东邓国民王晓杰马利志马广文邱轶石剑许严徐韵淳周旭何智龙钱婷李烨东姚凯袁月夏庆宇王腾飞周维维朱焕光
Owner SHANGHAI PUDONG ROAD & BRIDGE CONSTR
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