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Asphalt reinforcing agent and application of asphalt reinforcing agent in modified heavy traffic asphalt

A technology for re-crossing asphalt and reinforcing agents, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of difficult to form stable modified asphalt, poor compatibility with SBS, and low softening point, etc., to improve asphalt. High temperature stability and low temperature cracking resistance, the effect of extending the service life of the road

Active Publication Date: 2019-05-28
上海同沥新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the prior art, the compatibility with SBS is poor, and it is difficult to form a stable modified asphalt, so that the high temperature stability of the modified asphalt is poor, the softening point is low, and it does not meet the requirements for road use.

Method used

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  • Asphalt reinforcing agent and application of asphalt reinforcing agent in modified heavy traffic asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Modified heavy traffic asphalt raw materials (parts by weight): 90 parts of base asphalt, 5 parts of SBS, 6 parts of asphalt reinforcing agent, and 2 parts of stabilizer.

[0050] The stabilizer is PEG400.

[0051] The asphalt reinforcing agent is prepared by mixing functionalized mineral powder and basalt fiber at a mass ratio of 1:1. The functionalized mineral powder is modified vermiculite.

[0052] The preparation method of described modified vermiculite comprises the following steps, and described part is weight part:

[0053] (1) Add 8 parts of vermiculite powder to 50 parts of water, then add 4 parts of sodium stearate, stir at 200 rpm at 70°C for 50 minutes, centrifuge at 4000 rpm for 15 minutes, and dry the lower precipitate at 70°C To constant weight, obtain pretreated vermiculite powder;

[0054] (2) Add 4 parts of n-butyl borate and 3 parts of PEG10000 to 30 parts of ethanol, stir at 200 rpm for 30 minutes to obtain a mixed solution, mix 3 parts of acetic...

Embodiment 2

[0058] Modified heavy traffic asphalt raw materials (parts by weight): 90 parts of base asphalt, 5 parts of SBS, 6 parts of asphalt reinforcing agent, and 2 parts of stabilizer.

[0059] The stabilizer is PEG400.

[0060] The asphalt reinforcing agent is prepared by mixing functionalized mineral powder and modified basalt fiber at a mass ratio of 1:1.

[0061] The functionalized mineral powder is modified vermiculite.

[0062] The preparation method of described modified vermiculite comprises the following steps, and described part is weight part:

[0063] (1) Add 8 parts of vermiculite powder to 50 parts of water, then add 4 parts of sodium stearate, stir at 200 rpm at 70°C for 50 minutes, centrifuge at 4000 rpm for 15 minutes, and dry the lower precipitate at 70°C To constant weight, obtain pretreated vermiculite powder;

[0064] (2) Add 4 parts of n-butyl borate and 3 parts of PEG10000 to 30 parts of ethanol, stir at 200 rpm for 30 minutes to obtain a mixed solution, mix...

Embodiment 3

[0072] Modified heavy traffic asphalt raw materials (parts by weight): 90 parts of base asphalt, 5 parts of SBS, 6 parts of asphalt reinforcing agent, and 2 parts of stabilizer.

[0073] The stabilizer is PEG400.

[0074] The asphalt reinforcing agent is prepared by mixing functionalized mineral powder and modified basalt fiber at a mass ratio of 1:1.

[0075] The functionalized mineral powder is modified serpentine.

[0076] The preparation method of the modified serpentine comprises the following steps, and the parts are all parts by weight: 4 parts of sorbitan fatty acid esters are added to 80 parts of ethanol, stirred at 45° C. at 200 rpm for 10 Minutes, add 8 parts of serpentine powder, stir at 45°C at 200 rpm for 50 minutes, centrifuge at 4000 rpm for 15 minutes, dry the lower sediment at 70°C to constant weight, grind, and pass through a 300-mesh sieve to obtain modified Serpentine.

[0077] The preparation method of the modified basalt fiber comprises the following ...

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Abstract

The invention discloses an asphalt reinforcing agent and application of the asphalt reinforcing agent in modified heavy traffic asphalt. The asphalt reinforcing agent is prepared from raw materials: functional mineral powder and modified basalt fiber; and the functional mineral powder is modified serpentine and / or modified vermiculite. Compared with the prior art, the asphalt reinforcing agent isapplied to asphalt modification and can significantly improve the high-temperature stability and low-temperature anti-cracking property of asphalt, the modified heavy traffic asphalt can meet requirements of the use property of the road, and the service life of the road is prolonged.

Description

technical field [0001] The invention relates to the technical field of asphalt modification, in particular to an asphalt reinforcing agent and its application in modified heavy traffic asphalt. Background technique [0002] Asphalt material is one of the commonly used materials in road engineering. Modified asphalt is to improve the road performance of asphalt material and asphalt mixture by adding modifiers. With the development of social economy, the traffic volume continues to increase, and the proportion of heavy-duty vehicles is increasing, which brings huge challenges to the quality of the road surface. Many newly-built asphalt pavements have serious problems such as bulging and breaking. The reason is mainly due to insufficient high temperature stability of pavement materials. As the most important component of pavement materials, asphalt plays a decisive role in pavement quality. An ideal asphalt material should meet the following requirements: greater stiffness at ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L71/02C08K9/02C08K7/10C08K9/06C08K3/04C08K9/04C08K3/34
Inventor 刘建军
Owner 上海同沥新材料科技有限公司
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