Anti-rutting modifying agent used for asphalt pavement and asphalt mixture containing anti-rutting modifying agent

A technology of asphalt mixture and asphalt pavement, which is applied in the direction of building insulation materials, building components, buildings, etc., can solve the problems of poor adhesion and water damage resistance, and achieve good deformation resistance and high rutting resistance , High adhesion effect

Active Publication Date: 2013-04-24
北京中交路通科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] To sum up, the modifiers provided by the above-mentioned patents only focus on solving the problem of anti-rutting, but do not improve other properties, such as low-temperature crack resistance, adhesion, and water damage resistance.

Method used

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  • Anti-rutting modifying agent used for asphalt pavement and asphalt mixture containing anti-rutting modifying agent
  • Anti-rutting modifying agent used for asphalt pavement and asphalt mixture containing anti-rutting modifying agent
  • Anti-rutting modifying agent used for asphalt pavement and asphalt mixture containing anti-rutting modifying agent

Examples

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Effect test

Embodiment 1

[0068] An anti-rutting modifier, comprising by mass percentage:

[0069] High density low pressure polyethylene 80wt%

[0070] Rubber powder 8wt%

[0071] Rock asphalt 12wt%;

[0072] The preparation method is:

[0073] Heat the high-density low-pressure polyethylene to 200°C, add rubber powder and rock asphalt, shear, stir, extrude, and pelletize through a plastic extruder to obtain a granular mixture with a particle size of 1.8-2.4mm, that is Anti-rutting modifier.

Embodiment 2

[0075] The anti-rutting modifier comprises by mass percentage:

[0076] High density low pressure polyethylene 85wt%

[0077] Rubber powder 9wt%

[0078] Rock asphalt 6wt%;

[0079] The preparation method is:

[0080] Heat high-density and low-pressure polyethylene to 190°C, add rubber powder and rock asphalt, shear, stir, extrude, and pelletize through a plastic extruder to obtain a granular mixture with a particle size of 2.4-3.0mm, that is Anti-rutting modifier.

Embodiment 3

[0082] The anti-rutting modifier comprises by mass percentage:

[0083] High density low pressure polyethylene 92wt%

[0084] Rubber powder 3wt%

[0085] Rock asphalt 5wt%;

[0086] The preparation method is:

[0087] Heat high-density and low-pressure polyethylene to 180°C, add rubber powder and rock asphalt, shear, stir, extrude, and pelletize through a plastic extruder to obtain a granular mixture with a particle size of 3.0-3.6mm, that is Anti-rutting modifier.

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Abstract

The invention relates to an anti-rutting modifying agent. The anti-rutting modifying agent comprises (a) high-density low-pressure polyethylene, (b) rubber powder and (c) rock asphalt. The anti-rutting modifying agent is good in low-temperature cracking resistance, high in bonding strength, high in water damage resistance, good in non-deformability, low in cost, simple in preparation technology, convenient to operate and convenient to add in asphalt mixture.

Description

technical field [0001] The invention relates to an anti-rutting modifier for highway asphalt pavement and an asphalt mixture containing the anti-rutting modifier, belonging to the technical field of road and bridge engineering. Background technique [0002] Asphalt pavement has the advantages of smooth surface, no joints, comfortable driving, wear resistance, small vibration, low noise, short construction period, easy maintenance and repair, and suitable for phased construction. It is widely used in road construction at all levels in our country. However, with the development of transportation, the number of heavy-duty vehicles and high-pressure tires increases, and the rutting of asphalt pavement becomes more and more serious. The thickness of the layer is thinned, which weakens the overall strength of the surface layer and the pavement structure, and is easy to induce other diseases; (3) water accumulation in the rut after rain can easily cause the vehicle to drift and aff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L23/06C08L21/00
Inventor 李昌铸穆岩
Owner 北京中交路通科技发展有限公司
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