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Flexible asphalt, preparation method therefor, road pavement material and road

A flexible and asphalt technology, applied in flexible asphalt and its preparation, road paving materials and road fields, can solve the problems of road surface damage, reflective cracks, etc., achieve high viscosity, high and low temperature ductility, and improve the effect of weathering resistance

Inactive Publication Date: 2016-04-27
北京路新大成景观建筑工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the excessive flow of motor vehicles, in this kind of road surface, diseases such as reflection cracks caused by cement concrete expansion joints often occur, resulting in damage to the road surface

Method used

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  • Flexible asphalt, preparation method therefor, road pavement material and road
  • Flexible asphalt, preparation method therefor, road pavement material and road
  • Flexible asphalt, preparation method therefor, road pavement material and road

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preparation example Construction

[0085] Correspondingly, the present invention also provides a kind of preparation method of flexible asphalt, specifically can comprise:

[0086] Heat 4-9 parts by mass of base asphalt to 140-180°C, then add 1-6 parts by mass of aromatic oil, and mix well;

[0087] Then add 0.01-1% of sulfur accounting for the sum of base asphalt and aromatic oil, 0.01-1% of copper oxide accounting for the sum of base asphalt and aromatic oil, and 0.01-1.5% of the sum of base asphalt and aromatic oil. % of anti-stripping agent and 4-12% of butadiene-styrene block copolymer accounting for the sum of base asphalt and aromatic oil, high-speed shearing and grinding to obtain flexible asphalt.

[0088] In the method for preparing flexible asphalt provided by the embodiment of the present invention, the base asphalt has good compatibility with the aromatic oil, and the aromatic oil has the characteristics of high temperature resistance and low volatility, thereby significantly improving the weatheri...

Embodiment 1

[0119] Heat 7 parts by mass of base asphalt to 160°C and input it into the mixing tank, then add 3 parts by mass of aromatic oil and stir until uniform, and record the sum of the mass of base asphalt and aromatic oil as W; then add W×0.15% of Sulfur, W×0.15% copper oxide, W×0.4% anti-stripping agent, W×7.5% SBS, fully mixed, high-speed shearing and grinding to obtain flexible asphalt.

Embodiment 2

[0121] Heat 4 parts by mass of base asphalt to 160°C and input it into the mixing tank, then add 6 parts by mass of aromatic oil and stir until uniform, and record the sum of the mass of base asphalt and aromatic oil as W; then add W×0.01% of Sulfur, W×1% copper oxide, W×0.01% anti-stripping agent, W×4% SBS, mixed thoroughly, high-speed shearing and grinding, to obtain flexible asphalt.

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Abstract

The invention discloses flexible asphalt, a preparation method therefor, a road pavement material and a road and relates to the technical field of road pavement materials. The flexible asphalt can have relatively high flexibility and stress relaxation in low-temperature and normal-temperature states, can have relatively good plastic deformation resistance in a high-temperature state and can be used for inhibiting the generation of reflection cracks in asphalt-plus-concrete pavement constructions. The flexible asphalt disclosed by the invention contains 4-9 parts (by mass) of matrix asphalt, 1-6 parts (by mass) of aromatic hydrocarbon oil, sulfur, of which the mass is 0.01-1% the total mass of the matrix asphalt and aromatic hydrocarbon oil, copper oxide, of which the mass is 0.01-1% the total mass of the matrix asphalt and aromatic hydrocarbon oil, an anti-stripping agent, of which the mass is 0.01-1.5% the total mass of the matrix asphalt and aromatic hydrocarbon oil, and a butadiene-styrene block copolymer, of which the mass is 4-12% the total mass of the matrix asphalt and aromatic hydrocarbon oil. The flexible asphalt disclosed by the invention is applicable to a reforming process for cement concrete pavements.

Description

technical field [0001] The invention relates to the technical field of road paving materials, in particular to a flexible asphalt and a preparation method thereof, a road paving material and a road. Background technique [0002] In the construction of urban roads in my country, cement concrete pavement is widely used in road engineering because of its good load resistance and impact resistance and rich raw material resources. Compared with the current asphalt pavement, the cost is more economical and other characteristics. [0003] However, with the improvement of the national economy, the flow of motor vehicles is increasing, and the shortcomings of cement concrete pavement are becoming more and more obvious, such as: wet and slippery road surface, poor resistance to salt corrosion and freeze-thaw, low comfort caused by noise and bumps, and inconvenient maintenance. . Therefore, there are more and more projects to add asphalt surface layer (that is, the "white" and "black"...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08K5/01C08K3/06C08K3/22C04B26/26E01C7/26E01C7/32
Inventor 林忠徐开宇
Owner 北京路新大成景观建筑工程有限公司
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