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Treatment method for improving adhesion of asphalt with aggregates

A treatment method and adhesion technology, which is applied in the field of asphalt pavement materials, can solve the problems of high mutual repulsion between anti-stripping substances and asphalt or stone materials, difficulty in operation, pollution of the environment, etc., to improve water damage resistance and stability Good, easy to deal with the effect

Inactive Publication Date: 2013-02-06
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, the above methods or one or more aspects have the following disadvantages: difficulty in operation, high cost, high mutual repellency between traditional anti-stripping materials and asphalt or stone, poor stability, and environmental pollution.

Method used

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  • Treatment method for improving adhesion of asphalt with aggregates
  • Treatment method for improving adhesion of asphalt with aggregates
  • Treatment method for improving adhesion of asphalt with aggregates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The asphalt used in a certain project is 70# matrix asphalt, and the stone material is granite.

[0019] ⑴. Mix 4.5 kg of aluminum trichloride hexahydrate with 995.5 kg of drinking water at room temperature, and stir evenly to obtain an aqueous solution of aluminum trichloride hexahydrate with a concentration of 4.5‰.

[0020] (2) Infiltrate the granite aggregate with the above-mentioned aluminum chloride hexahydrate aqueous solution, and take it out immediately after the surface of the granite aggregate is fully infiltrated. The infiltration process is 10s;

[0021] ⑶. After the granite aggregate is dried or dried, the asphalt mixture can be mixed according to the conventional method.

[0022] Test 1. Adhesion level test between asphalt and granite in asphalt mixture

[0023] After drying the infiltrated basalt aggregates in this example, a water boiling test was carried out. At the same time, the water boiling test of granite that has not been treated by this method...

Embodiment 2

[0036] The asphalt used in a certain project is SBS matrix asphalt, and the stone material is basalt.

[0037] ⑴. Mix 5 kg of aluminum trichloride hydrate with 995 kg of drinking water at room temperature, and stir evenly to obtain an aqueous solution of aluminum trichloride hexahydrate with a concentration of 5‰.

[0038] (2) Infiltrate the basalt aggregate with the above-mentioned aluminum chloride hexahydrate aqueous solution, and take it out immediately after the surface of the basalt aggregate is completely infiltrated. The infiltration process is 13s;

[0039] ⑶. After the basalt aggregate is dried or dried, the asphalt mixture can be mixed according to the conventional method.

[0040] Test 1. Adhesion grade test between asphalt and basalt in asphalt mixture:

[0041] After drying the infiltrated basalt aggregates in this example, a water boiling test was carried out. At the same time, the water boiling test of basalt that has not been treated by this method is carrie...

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Abstract

The invention relates to a treatment method for improving adhesion of asphalt with stones. The treatment method is characterized by including the steps: (1) mixing, by mass, 4%o-6%o of aluminum chloride hexahydrate with 994%o-996%o of drinking water at the normal temperature, and uniformly stirring the mixture to prepare water solution; (2) soaking acidic stones into a container containing the aluminum chloride hexahydrate water solution and taking out the stones immediately when the surfaces of the stones are totally infiltrated with the whole process not more than 15s; and (3) airing or drying the stones prior to mixing asphalt mixture by a conventional method. The treatment method for improving adhesion of the asphalt with the stones is simple, available to raw materials, low in cost, good in stability, free of pollution and high in innovativeness.

Description

technical field [0001] The invention belongs to the field of asphalt pavement materials for road engineering, in particular to a treatment method for improving the adhesion between asphalt and stone materials. Background technique [0002] Most of the existing pavement materials are mixtures of asphalt and stone. Insufficient adhesion between asphalt and stone will lead to insufficient water damage resistance of the asphalt mixture, which will lead to early water damage such as pits and looseness on the asphalt concrete pavement. As an important damage factor of asphalt pavement, it seriously affects the service life of asphalt pavement. [0003] The traditional methods to improve the adhesion between asphalt and stone include: ① use dry ground slaked lime powder, quicklime powder, and cement as part of the filler; ② add anti-stripping agent to the asphalt; ③ treat the aggregate with lime slurry use. However, the above method or one or more aspects have the following disad...

Claims

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Application Information

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IPC IPC(8): C04B14/02C04B26/26
Inventor 周卫峰李彦伟李源渊李鑫李铁山殷建韩振东董涛赵翔刘淑艳程棋锋刘好董进秋郝树伟宋洁
Owner 天津市市政工程研究院
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