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Asphalt regenerating agent, preparation method thereof and regenerated asphalt mixture

An asphalt regenerating agent and a technology for regenerating asphalt, which are applied in building thermal insulation materials, building components, buildings, etc., can solve the problems of no disclosure of the preparation method of the asphalt rejuvenating agent, limited research on the effective utilization of citrus peels, limited utilization of citrus peels, etc. Good application prospects, recovery performance indicators, and effective utilization

Inactive Publication Date: 2018-01-12
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In my country, citrus resources are very rich, and both the citrus cultivation area and the total output of citrus rank among the top in the world. However, the utilization of citrus peels in our country is very limited, and only a small part is used to make tangerine peels for use as Chinese medicinal materials. Most of the rest of the citrus peels are discarded as waste
Although the effective utilization of citrus peels has been explored at home and abroad, the research on the effective utilization of citrus peels that has made major breakthroughs is very limited, especially in the field of asphalt rejuvenation agents. The preparation method of asphalt regenerant is disclosed

Method used

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  • Asphalt regenerating agent, preparation method thereof and regenerated asphalt mixture
  • Asphalt regenerating agent, preparation method thereof and regenerated asphalt mixture
  • Asphalt regenerating agent, preparation method thereof and regenerated asphalt mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1. A preparation method of asphalt regenerant prepared based on citrus peel extract, the specific steps are as follows:

[0038] 1) Take 600 g of citrus peel (pomelo peel is used in this embodiment), wash it, chop it up, add distilled water at room temperature and soak for 2 hours.

[0039] 2) Distill the soaking mixture obtained in step 1) under the experimental conditions of 101KPa, heat it until the water reaches boiling state, collect the obtained distillate mixture, and then extract it with dichloromethane solution to obtain the citrus peel extract . 3) At 60°C, the asphalt rejuvenator was uniformly prepared by mixing 82g of citrus peel extract, 12g of stabilizer, 5g of plasticizer, and 1g of antiaging agent for 10 minutes.

[0040] 4) After the temperature is cooled to room temperature, an asphalt rejuvenator based on the citrus peel extract is prepared.

[0041] In this embodiment, the stabilizer is a blend of oleic acid, linoleic acid and palmitic acid in any ...

Embodiment 2

[0061] Repeat step 1 in Example 1, the difference is: Citrus peel extract 76g, stabilizer 15g, plasticizer 7g, anti-aging agent 2g.

[0062] Repeat step 2 in Example 1, add asphalt regeneration agent in the aging asphalt samples by 4g, 5g, and 6g, and give the sample numbers 4#, 5#, and 6# respectively. Test the penetration, softening point, viscosity and low temperature performance indicators. Table 3 Reclaimed asphalt penetration, softening point, viscosity and low temperature performance indicators.

[0063]

[0064] Penetration, softening point and viscosity tests are carried out according to "Test Regulations for Highway Engineering Asphalt and Asphalt Mixtures" (JTGE20-2011), creep stiffness and creep rate are tested according to "Test Regulations for Highway Engineering Bitumen and Asphalt Mixtures" ( JTGE20-2011) test procedure T6027. The test results show that the asphalt rejuvenator prepared based on the citrus peel extract prepared in Example 2 of the present i...

Embodiment 3

[0066] Repeat step 1 in Example 1, the difference is: citrus peel extract 90g, stabilizer 6g, plasticizer 3g, anti-aging agent 1g.

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Abstract

The invention discloses an asphalt regenerating agent. The asphalt regenerating agent comprises the following components in percent by weight: 76-90% of a citrus peel extract, 6-15% of a stabilizing agent, 3-7% of a plasticizer and 1-2% of an antiager, wherein the citrus peel extract is obtained by distilling and extracting citrus peel. The invention further provides regenerated asphalt. The regenerated asphalt is prepared according to a method comprising the following steps: 1) milling an aged asphalt pavement to obtain a waste asphalt mixture; 2) extracting the waste asphalt mixture to obtain aged asphalt; 3) adding the asphalt regenerating agent into the aged asphalt under the condition of 130-140 DEG C, and stirring to obtain the regenerated asphalt, wherein the mass ratio of the asphalt regenerating agent to the aged asphalt is (5-7):100. The invention further provides a regenerated asphalt mixture. The asphalt regenerating agent can effectively restore performance indexes of theaged asphalt, has the characteristic of being simple in operation, can be prepared on a large scale, and has a good application prospect in the field of waste asphalt mixture regeneration.

Description

technical field [0001] The invention relates to the field of asphalt rejuvenating agent, in particular to an asphalt regenerating agent, a preparation method thereof and a regenerated asphalt mixture. Background technique [0002] In the field of asphalt rejuvenation agents, most of the existing asphalt rejuvenation agents use petroleum-based light aromatic oil as raw material, and petroleum is a non-renewable resource, and asphalt made from petroleum asphalt rejuvenation agents will recover performance once it is aged. Ineffective. However, the performance of many aging asphalt pavements cannot be effectively restored, and there are great limitations. Nowadays, with the depletion of petroleum resources and the necessity of people seeking to restore the performance of asphalt efficiently, the development of new asphalt regenerants based on renewable resources has received widespread attention. Among them, new asphalt based on plant extracts Regenerants have been extensivel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L5/00C08K13/02C08K5/01C08K5/09C08K3/26C04B26/26
Inventor 刘刚秦靖闰吴少鹏张遥雷敏陈昊陈美祝庞凌肖月刘全涛薛永杰
Owner WUHAN UNIV OF TECH
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