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Cold-recycled mixture base on pavement recycled material and preparation method and use thereof

A technology of cold recycling and mixed materials, which is applied in the field of asphalt pavement materials, can solve the problems of difficulty, slow strength growth, and high cost, and achieve the effects of reducing construction costs, protecting the environment, and improving initial strength and strength development speed

Active Publication Date: 2019-01-25
湖南鑫长胜材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The key to asphalt regeneration technology is to mix the old asphalt in the original mixture with new asphalt materials to form a new blended asphalt. However, in actual construction, it is difficult to integrate emulsified asphalt and foamed asphalt with old asphalt materials. Poor coating of mix
The production of emulsified asphalt and foamed asphalt requires special equipment and technology, which is expensive and difficult. The asphalt has a long curing time and slow strength growth, and it is difficult to guarantee the road performance of the recycled mixture.
In the existing technical scheme, such as the regeneration process proposed by the publication number CN 107324639A, the water-based epoxy resin is added to the emulsified asphalt to modify it. Although the early strength performance of the cold recycled asphalt mixture can be appropriately improved, it does not Solving the problem of amalgamation of old and new asphalt materials in recycling technology

Method used

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  • Cold-recycled mixture base on pavement recycled material and preparation method and use thereof
  • Cold-recycled mixture base on pavement recycled material and preparation method and use thereof
  • Cold-recycled mixture base on pavement recycled material and preparation method and use thereof

Examples

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preparation example Construction

[0043] [Preparation method of mixture based on cold recycling of pavement recycled materials]

[0044] The second aspect of the present invention provides a method for preparing a mixture based on cold recycling of pavement reclaimed materials, sometimes simply referred to as "the preparation method of the present invention". The preparation method of the present invention at least comprises the following steps:

[0045] (1) Test the asphalt content and gradation in the old road milling material, adjust the asphalt content in the old road milling material to 4%-6% by weight, and adjust the gravel to adjust the old road milling material grading to the required grading range;

[0046] (2) Use mechanical crushing or heating to disperse the old road surface milling material to obtain the first dispersion material, and make the first dispersion material agglomerate or agglomerate with a maximum diameter of 4 cm or less, thereby obtaining the processed old road surface milling mate...

preparation example 1

[0053] This example is the preparation method of the cold regeneration composition. Include the following steps:

[0054] (1) Take by weight 50 parts of petroleum base pitch (the content of colloid is 15% based on weight), 12 parts of water-based epoxy resin, 25 parts of reactive solvent, and 15 parts of n-dodecyltriethoxysilane , 12 parts of regeneration agent, spare.

[0055] The reactive solvent is composed of oleic acid, dodecyl dimethyl betaine and tris-(dimethylaminomethyl)phenol polymer in a weight ratio of 10:2:1.

[0056] The regeneration agent is composed of light base oil, polygalacturonic acid, isocyanate, xylene, and nano-calcium carbonate in a weight ratio of 4:2:1:2:1. It was formulated by stirring at 60 degrees Celsius at low speed.

[0057] (2) Heat the petroleum-based asphalt to 140°C, stir and keep warm at a speed of 50 rpm, and wait for the next process.

[0058] (3) Add the reactive solvent weighed by the above parts by weight into the petroleum base a...

preparation example 2

[0064] The present embodiment is the preparation method of cold regeneration composition, and it comprises the following steps:

[0065] (1) Take by weight 55 parts of petroleum base pitch (the content of colloid is based on 10% by weight), 15 parts of water-based epoxy resin, 28 parts of reactive solvent, and 15 parts of n-dodecyltriethoxysilane , 14 parts of regeneration agent, spare.

[0066] The reactive solvent is composed of oleic acid, dodecyl dimethyl betaine and tris-(dimethylaminomethyl)phenol polymer in a weight ratio of 10:3:0.8.

[0067] The regeneration agent is composed of light base oil, polygalacturonic acid, isocyanate, xylene, and nano-calcium carbonate in a weight ratio of 4:2:1:2:1. It was formulated by stirring at 60 degrees Celsius at low speed.

[0068] (2) Heat the petroleum-based asphalt to 140°C, stir and keep warm at a speed of 50 rpm, and wait for the next process.

[0069] (3) Add the reactive solvent weighed by the above parts by weight into t...

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Abstract

The invention discloses a mixture based on cold recycling of pavement recycled material and a preparation method and use thereof. The mixture of the invention comprises 80- 100 parts by weight of oldpavement milling material, 6- 8 parts by weight of a cold regeneration composition, 0. 20 part by weight of gravel and 1- 2 parts by weight of a curing agent, wherein that cold recycling composition comprise a petroleum base asphalt, an aqueous epoxy resin, an alkyltriethoxysilane, a straight chain monounsaturated fatty acid, dodecyldimethylbetaine, tris-- (dimethylaminomethyl) phenol polymer andregenerant. The mixture of the invention can improve the initial strength and the strength development speed after the pavement recycled material is recycled.

Description

technical field [0001] The invention relates to the field of asphalt pavement materials, in particular to a mixture based on cold regeneration of pavement reclaimed materials and its preparation method and application. Background technique [0002] During the long-term use of asphalt pavement, due to the comprehensive effects of temperature, sunlight, oxygen, rain and other natural factors and vehicle loads, the road performance will gradually decline, and cracks, looseness, pits and ruts will appear. The maintenance and repair of asphalt pavement produces a large amount of waste asphalt mixture, resulting in a waste of resources. Cold recycling technology can effectively use waste pavement materials, save engineering costs, and avoid energy consumption and environmental pollution caused by hot recycling technology. [0003] At present, the asphalt materials used in cold recycling technology are mainly emulsified asphalt and foamed asphalt. Emulsified asphalt is an asphalt ...

Claims

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Application Information

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IPC IPC(8): E01C19/10C04B28/04C04B18/16
CPCC04B18/16C04B28/04C04B2201/50E01C19/1004C04B14/106C04B14/02C04B24/36C04B24/281C04B24/42C04B24/383C04B24/282C04B24/00C04B14/28C04B24/2688Y02W30/91
Inventor 李九苏李杰王潇潇沈增晖张毅曾鹏飞黄治湘劳星
Owner 湖南鑫长胜材料科技有限公司
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