Anti-rutting asphalt and preparation method thereof

An anti-rutting and asphalt technology, applied in the field of anti-rutting asphalt and its preparation, can solve the problems of difficult rutting maintenance, affecting high-speed driving, road surface damage, etc. Effect

Inactive Publication Date: 2021-07-23
四川统揽建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the repair of rutting damage is the most difficult, because rutting not only occurs on the surface, but also often endangers the middle and lower layers
[0003] Because the appearance of rutting will greatly reduce the performance of the road surface, affect the smoothness of the road surface, and reduce the driving comfort; it will reduce the thickness of the asphalt layer, reduce the overall strength of the surface layer and the pavement structure, and further cause cracks and pits Grooves and other road surface damage; it will seriously affect the quality and service life of the road surface; the road surface drainage is not smooth in rainy days, and the driving vehicles are prone to drifting, which affects the safety of high-speed driving; therefore, the anti-rutting ability of the asphalt pavement must be strengthened

Method used

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  • Anti-rutting asphalt and preparation method thereof
  • Anti-rutting asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-5

[0050] Modified asphalt preparation examples 1-5 differ only in the choice or amount of modifier. Modified asphalt preparation 1-5 modifiers and specific dosage are shown in Table 1 below.

[0051] Table 1 Modifiers used in modified asphalt 1-5 and their specific dosages.

[0052]

Embodiment 1

[0055] A kind of preparation of anti-rut asphalt comprises the steps:

[0056] Preparation of asphalt mixture: Mix 10kg of base asphalt, 95kg of coarse aggregate, 17kg of fine aggregate and 0.3kg of BX anti-rutting agent, and then heat at 220°C for 10 minutes to obtain hot asphalt mixture;

[0057] Prepare cement slurry: mix 6.8kg cement, 9kg water, 2.5kg mineral powder, 4kg sand and 0.5kg fly ash evenly to obtain cement slurry;

[0058] Grouting: Take 80kg of hot asphalt mixture and cool it down to 80°C before paving, then pour 20kg of cement slurry on the paved asphalt mixture, and cure for 7 days.

Embodiment 2-5

[0060] The difference between Examples 2-5 is only that the asphalt ratio in the asphalt mixture is different. The specific proportions in Examples 2-5 are shown in Table 2 below.

[0061] The proportioning table of table 2 embodiment 2-5

[0062] Example Base bitumen / kg Coarse aggregate / kg Fine aggregate / kg Oil stone ratio% Example 1 10 95 17 9 Example 2 3 80 20 3 Example 3 5.2 85 15 5.2 Example 4 3 100 20 2.5 Example 5 5 100 10 4.5

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Abstract

The invention relates to the technical field of road engineering materials, and particularly discloses anti-rutting asphalt and a preparation method thereof. The anti-rutting asphalt comprises an asphalt mixture and cement slurry in a weight ratio of (3-4.8): 1; based on the total amount of the asphalt mixture, the asphalt mixture is prepared from the following raw materials in parts by weight: 3-10 parts of matrix asphalt, 80-100 parts of coarse aggregate, 10-20 parts of fine aggregate and 0.05-0.3 part of an anti-rut agent, based on the total amount of the cement slurry, the cement slurry is prepared from the following raw materials in parts by weight: 0-70 parts of cement, 80-100 parts of water, 20-40 parts of mineral powder, 40-80 parts of sand and 2-6 parts of an additive, the preparation method comprises the following steps: firstly preparing the asphalt mixture, then flattening, pouring the cement slurry on the flattened asphalt mixture, and curing to obtain the asphalt pavement. The asphalt provided by the invention has excellent anti-rutting performance.

Description

technical field [0001] The application relates to the technical field of road engineering materials, more specifically, it relates to a rutting-resistant asphalt and a preparation method thereof. Background technique [0002] Asphalt pavement is the main structural form of high-grade highways and municipal roads in my country. With the continuous increase of traffic volume and axle load, especially in high temperature summer, more difficult rutting damages generally appear. Rutting is the main structure of asphalt pavement in recent years. Compared with cracking and water damage, rutting is the most harmful and directly affects traffic safety. At the same time, the repair of rutting damage is the most difficult, because rutting not only occurs on the surface, but also often endangers the middle and lower layers. [0003] Because the appearance of rutting will greatly reduce the performance of the road surface, affect the smoothness of the road surface, and reduce the driving...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/00C04B2111/0075C04B24/36C04B14/06C04B18/08C04B18/141C04B14/02C04B2103/0068
Inventor 江智威
Owner 四川统揽建设集团有限公司
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