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Low-dosage asphalt regenerant and preparation method and application method thereof

An asphalt regenerating agent and a technology for reclaiming asphalt, which are applied in building components, building thermal insulation materials, buildings, etc., can solve the problem of high cost of raw materials, reduce the amount of mixing, save production costs, and be conducive to environmental protection and sustainable development. Effect

Pending Publication Date: 2020-12-04
HUNAN YUNZHONG REGENERATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the mixing amount of the regenerant is generally 8%-12%, and the specific mixing amount depends on the aging degree of the aged asphalt, the mixture index to be achieved, etc., and the raw material cost is relatively high

Method used

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  • Low-dosage asphalt regenerant and preparation method and application method thereof
  • Low-dosage asphalt regenerant and preparation method and application method thereof
  • Low-dosage asphalt regenerant and preparation method and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The asphalt regenerant consists of the following raw materials in percentage by mass: 100 parts of rubber oil, 20 parts of anthracene oil, 5 parts of turpentine, 15 parts of butyl epoxy fatty acid, 2 parts of calcium stearate and 5 parts of organic nano-montmorillonite.

[0040] According to the above proportion, the preparation steps of the asphalt regenerant are as follows:

[0041] Heating rubber oil to 60-80℃, adding anthracene oil, turpentine and epoxy fatty acid butyl ester, stirring at a speed of 50-100r / min for 10-20min, and uniformly mixing; Heating to 100-120℃, further adding calcium stearate and organic nano-montmorillonite and shearing for 20-30 min with a high-speed shearing machine at a speed of 2000-3000r / min; After natural cooling, the asphalt regenerant is obtained.

Embodiment 2

[0043] The asphalt regenerant consists of the following raw materials in percentage by mass: 90 parts of aromatic oil, 10 parts of anthracene oil, 7 parts of rosin water, 13 parts of epoxidized soybean oil, 5 parts of barium stearate and 1 part of organic nano montmorillonite.

[0044] According to the above proportion, the preparation steps of the asphalt regenerant are as follows:

[0045] Heating aromatic oil to 60-80℃, adding anthracene oil, rosin water and epoxidized soybean oil, keeping the temperature at 50-100r / min, stirring for 10-20min, and uniformly mixing; Heating to 100-120℃, further adding barium stearate and organic nano montmorillonite, and shearing for 20-30min； at a speed of 2000-3000r / min with a high-speed shearing machine; After natural cooling, the asphalt regenerant is obtained.

Embodiment 3

[0047] The asphalt regenerant consists of the following raw materials in percentage by mass: 80 parts of waste engine oil, 15 parts of anthracene oil, 10 parts of ethyl acetate, 10 parts of octyl epoxy fatty acid, 1 part of barium stearate and 3 parts of organic nano-montmorillonite.

[0048] According to the above proportion, the preparation steps of the asphalt regenerant are as follows:

[0049] Heating waste engine oil to 60-80℃, adding anthracene oil, ethyl acetate and octyl epoxy fatty acid, stirring at a speed of 50-100r / min for 10-20min, and mixing evenly; Heating to 100-120℃, further adding barium stearate and organic nano montmorillonite, and shearing for 20-30min； at a speed of 2000-3000r / min with a high-speed shearing machine; After natural cooling, the asphalt regenerant is obtained.

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Abstract

The invention discloses a low-dosage asphalt regenerant and a preparation and application methods thereof. The regenerant comprises light oil, high-temperature coal tar fraction, a penetrating agent,a plasticizer, a lubricating agent and an anti-aging agent. The dissolving regeneration effect of the regenerant on the aged asphalt is improved by utilizing the high-temperature coal tar fraction andthe penetrant, and meanwhile, the performance of the regenerant is improved by doping multiple modifiers. The regenerant prepared by the invention can recover the component balance of the aged asphalt under the condition of low doping amount (5%-7%), so that the recycling of RAP is realized, and the waste is turned into wealth.

Description

Technical field [0001] The invention belongs to the field of road engineering materials, and particularly relates to a low-dosage asphalt regenerant and a preparation and application method thereof. technical background [0002] With the rapid development of China's transportation, the mileage of highways is increasing day by day. By the end of 2019, the national total highway mileage was 5,012,580 kilometers, and the highway maintenance mileage was 4,953,100 kilometers, accounting for 98.8% of the total highway mileage. China has shifted from the construction period to the period of laying equal stress on construction and maintenance. According to statistics, more than 80% of highway pavement types in China are asphalt pavement, and more than 160 million tons of waste asphalt mixture (RAP) are produced every year by major and medium-sized maintenance projects of trunk roads alone. The recycling technology of waste asphalt mixture can not only make the recycled pavement meet the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/00C08L21/00C08L93/04C08K13/06C08K5/098C08K9/04C08K3/34C08K5/101C08K5/1515
CPCC08K3/346C08K5/098C08K5/101C08K5/1515C08K9/04C08K13/06C08K2201/011C08L21/00C08L91/00C08L93/04C08L95/00C08L2201/08
Inventor 周艺吴超凡李泉温广香韩庆奎万暑刘小金童瑶
Owner HUNAN YUNZHONG REGENERATION TECH CO LTD
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