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Asphalt mixture with high anti-rut capability and preparation method therefor

A technology of asphalt mixture and anti-rutting agent, which is applied in the field of pavement materials, can solve the problems of poor compatibility between anti-rutting agent and asphalt, high cost of anti-rutting agent, segregation, etc., and achieve an increase in softening point, strong engineering application value, The effect of simple equipment

Active Publication Date: 2014-09-24
天津市市政工程研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a consensus among users is that the cost of adding anti-rutting agent is relatively high, the compatibility between anti-rutting agent and asphalt is poor, and the segregation phenomenon is serious

Method used

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  • Asphalt mixture with high anti-rut capability and preparation method therefor
  • Asphalt mixture with high anti-rut capability and preparation method therefor
  • Asphalt mixture with high anti-rut capability and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of AC-13 type asphalt mixture with high anti-rutting ability is characterized in that: it is composed of the following components by weight percentage:

[0030] Mineral material adopts limestone: 95.4Kg,

[0031] Asphalt adopts 70# matrix: 4.6Kg;

[0032] Anti-rutting agent: 0.184Kg.

[0033] Among them, the mineral materials adopt the following gradation:

[0034]

[0035] Wherein, anti-rutting agent is made of the following components by weight percentage:

[0036] Aluminum trichloride hexahydrate: 6kg;

[0037] Waste rubber powder: 2kg;

[0038] Drinking water 92kg.

[0039] The preparation method of the anti-rutting agent is as follows: take 6 kg of aluminum chloride hexahydrate and 92 kg of drinking water at room temperature, mix and stir evenly, then slowly add 2 kg of 40 mesh waste rubber powder into the aqueous aluminum chloride solution, and stir while adding, until The whole solution is mixed evenly to obtain the anti-rutting agent.

[0040] T...

Embodiment 2

[0045] An AC-20 rubber powder modified asphalt mixture with high rutting resistance, characterized in that it consists of the following components in weight percentage:

[0046] Mineral material adopts limestone: 95.2Kg,

[0047] Asphalt adopts rubber powder modified asphalt: 4.8Kg;

[0048] Anti-rutting agent: 0.24Kg.

[0049] Among them, the mineral materials adopt the following gradation:

[0050]

[0051] Wherein, the anti-rutting agent is composed of the following components by weight percentage:

[0052] Aluminum trichloride hexahydrate: 5kg;

[0053] Waste rubber powder: 3kg;

[0054] Drinking water 92kg.

[0055] The preparation method of the anti-rutting agent is as follows: take 5 kg of aluminum trichloride hexahydrate and 92 kg of drinking water at room temperature, mix and stir evenly, then slowly add 3 kg of 40 mesh waste rubber powder into the aqueous aluminum chloride solution, and stir while adding, until The whole solution is mixed evenly to obtain th...

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Abstract

The invention relates to an asphalt mixture with high anti-rut capability, which is composed of the following materials by weight parts: 93.5-96.5 parts of mineral aggregates, 3.5-6.5 parts of asphalt and 0.175-0.65 parts of anti-rut agent. A preparation method for the asphalt mixture with high anti-rut capability is characterized in that the steps are as follows: (1), the asphalt is heated to 145-165 DEG C, and the mineral aggregates are heated to 150-180 DEG C; (2), 93.5-96.5% of mineral aggregates and 3.5-6.5% of asphalt are put into a mixer to be mixed, and the anti-rut agent with amount of 2-10% of asphalt is sprayed after the asphalt is put for 5-8s; and (3), after the anti-rut agent is sprayed in the step (2), the mixture is stirred for 10-15s, then mineral powder is added, the obtained mixture is stirred more than 15s continuously, thereby ensuring uniform stirring, so as to obtain the finished product (the asphalt mixture with high anti-rut capability). The asphalt mixture with high anti-rut capability is rich in raw materials, low in preparation cost, high in cost performance and strong in anti-rut capability; and the preparation process for the asphalt mixture is simple and easy, equipment is easy, and the preparation process is easy to realize.

Description

technical field [0001] The invention belongs to the field of pavement materials, in particular to an asphalt mixture with high rutting resistance and a preparation method thereof. Background technique [0002] Asphalt pavement ruts mainly include abrasive ruts, structural ruts, instability ruts, and compaction ruts. Among many asphalt pavement diseases, rutting has become one of the main diseases. The appearance of rutting on asphalt pavement will seriously affect the service ability of the pavement structure, not only directly affect the smoothness of the pavement and driving safety, but also weaken the overall strength of the surface layer and pavement structure due to the thinning of the asphalt layer at the wheel tracks. It will further induce other diseases and affect the quality and service life of asphalt pavement. Rutting has become an urgent technical problem in highway construction. [0003] At present, in order to solve the rutting problem, there are the follow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B24/24
Inventor 周卫峰唐秀明孙妍枫张秀丽宋晓燕史增朝李源渊闫卫喜黄会明张卫忠张珺杨鸿彬王伟孙立喜于太伏张廉青董岩
Owner 天津市市政工程研究院
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