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Asphalt cold recycling agent and preparation method thereof

A cold regenerant and asphalt technology, applied in building components, sustainable waste treatment, solid waste management, etc., can solve the problem that the quality of asphalt mixture cannot meet the asphalt quality standard, the old asphalt material is not fully utilized, and it can only be used in the base layer. and other problems, to avoid landslides and vegetation reduction, improve regeneration utilization rate, and reduce mining effects.

Active Publication Date: 2011-09-07
重庆市智翔铺道技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are three major problems in the waste of old asphalt pavement materials: stacking requires space, causing environmental pollution, and wasting a lot of valuable resources
[0004] Although the cold recycling technology can fully utilize the old asphalt layer, fundamentally speaking, this kind of utilization is just a simple utilization, and the old asphalt material is not fully utilized, and the quality of the recycled asphalt mixture cannot reach the quality of the asphalt used as the pavement surface layer. Standard, can only be used for the grassroots, and it is mostly used for the renovation of rural roads in foreign countries

Method used

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  • Asphalt cold recycling agent and preparation method thereof
  • Asphalt cold recycling agent and preparation method thereof
  • Asphalt cold recycling agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 280g of aromatic oil, 7.5g of 4010NA and 7.5g of antioxidant 1010, 15g of 2,4-dimethylol benzophenone, and 350g of epoxy resin E51 are stirred evenly without particles, which is asphalt pavement cold regeneration agent A. Mix 300g cashew nut oil modified amine and 40g ZY-10 glycidyl ester evenly to obtain asphalt pavement cold regenerant B, and mix asphalt pavement cold regenerant A and cold regenerant B according to the ratio of the above-mentioned weight ratio of 66:34 to obtain asphalt pavement cold regenerant Regenerant. Heat the waste asphalt concrete dug or milled on site (the old milling material of Chongqing Yufu Expressway, which has been used for 6 years) to 60°C, gently grind it with a wooden stick, sieve it, and cool it to room temperature. Engineering asphalt and asphalt mixture test procedures JTJ 052-2000 "Abson method to recycle aged asphalt, in the recovered aged asphalt, add the asphalt cold regeneration agent prepared above according to the weight rat...

Embodiment 2～6

[0036] Embodiments 2-6: The asphalt cold rejuvenator was prepared according to the following materials and dosage, and the rest were the same as in Embodiment 1.

[0037]

[0038] Add the asphalt cold rejuvenator prepared according to the raw materials in the above table to the waste asphalt concrete at a weight ratio of 1% to 2% to the waste asphalt concrete to obtain a recycled asphalt mixture. The penetration at 25°C is 65-70, The ductility is greater than 100 at 15°C, and the softening point is 45-55.

[0039] Heat the excavated or milled waste asphalt concrete to 60°C, gently crush it with a wooden stick, sieve, and then synthesize the gradation according to the AC-13C type gradation requirements, and finally according to the weight ratio of the waste asphalt concrete to 1.0~ Add 2.0% of the asphalt cold rejuvenator prepared in the above table, and after uniform mixing, form and test according to the standard "Asphalt and Asphalt Mixture Test Procedures", the Marshall st...

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Abstract

The invention relates to an asphalt cold recycling agent, which is characterized by being prepared from a waste asphalt activator, an anti-aging agent, an ultraviolet absorbent, a reinforcing agent, a reinforcing curing agent and a reinforcing auxiliary agent serving as raw materials, wherein the waste asphalt activator consists of any one or more of engine oil, castor oil, naphthenic oil, aromatic hydrocarbon oil and furfural oil; the anti-aging agent is a mixture of an antioxidant and a p-phenylenediamine anti-aging agent; the ultraviolet absorbent is 2,4-dihydroxymethyl benzophenone; the reinforcing agent is bisphenol A epoxy resin E44 or E51; the reinforcing curing agent is a cashew nut oil modified amine curing agent; and the reinforcing auxiliary agent is a glycidyl ester epoxy active diluent. An asphalt recycled mixture prepared by adding the asphalt cold recycling agent into waste asphalt has high comprehensive performance, namely high bonding strength, high-temperature performance, low-temperature crack resistance and rheological performance, the actual service life of 8 years, and high aging resistance and weather resistance.

Description

technical field [0001] The invention relates to an asphalt regeneration agent and a preparation method thereof, in particular to an asphalt cold regeneration agent capable of making waste asphalt mixture fully meet the asphalt quality standard of the pavement surface layer and a preparation method thereof. Background technique [0002] With the development of highway construction, the workload of maintenance and repair of asphalt pavement will also increase significantly. The traditional maintenance method is generally to dig out the damaged old asphalt pavement and discard it, and then re-pave a new asphalt surface layer. This technique just has obvious deficiencies technically, and the cost is high, the construction period is long, and the traffic is interrupted for a long time. There are three major problems in the disposal of old asphalt pavement materials: stacking requires space, causing environmental pollution, and wasting a lot of valuable resources. Asphalt paveme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L63/02C08K5/00C08K5/01C08K5/103C08K5/18C08K5/132C04B18/16
CPCY02W30/91
Inventor 盛兴跃郝增恒张华牟建波王民黄磊吴文军徐光红张毅
Owner 重庆市智翔铺道技术工程有限公司
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