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Waste and old road asphalt regenerating agent and preparation method thereof

A technology of road asphalt and regenerant, which is applied to building components, building insulation materials, buildings, etc., can solve the problems of high volatility of regenerant, insufficient service life of regenerated asphalt, increased source of petroleum products and difficulty in obtaining them, and achieves Improve the performance of waste asphalt, good anti-aging performance, and realize the effect of industrial production

Active Publication Date: 2013-12-11
RES INST OF HIGHWAY MINIST OF TRANSPORT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many regenerants on the market. Although most regenerants can temporarily improve the performance of waste asphalt, the service life of the regenerated asphalt prepared by this method is not long enough, and there are certain limitations in practical applications.
Moreover, most regenerants on the market use light oil, which makes the regenerant highly volatile, and light oil is mostly petroleum-based products. With the decreasing petroleum resources, the source and difficulty of obtaining petroleum-based products are relatively increasing.

Method used

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  • Waste and old road asphalt regenerating agent and preparation method thereof
  • Waste and old road asphalt regenerating agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Mix 100g of petroleum asphalt, 250g of aromatic oil, and 50g of biomass pyrolysis oil at 120°C for 15 minutes, then add 150g of disproportionated rosin and 25g of styrene-butadiene rubber, and shear at 160°C for 30 minutes at a shear rate of 4000r / min.

Embodiment 2

[0039] Mix 125g of petroleum asphalt, 250g of aromatic oil, and 50g of biomass pyrolysis oil at 120°C for 15 minutes, then add 50g of disproportionated rosin and 25g of styrene-butadiene rubber, and shear at 160°C for 40 minutes at a shear rate of 4000r / min.

Embodiment 3

[0041] Mix 165g of petroleum asphalt, 225g of aromatic oil, and 40g of biomass pyrolysis oil at 120°C for 15 minutes, then add 50g of disproportionated rosin and 20g of styrene-butadiene rubber, and shear at 150°C for 40 minutes at a shear rate of 4000r / min.

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Abstract

A waste and old road asphalt regenerating agent comprises the components in parts by weight: 20 to 45 parts of petroleum asphalt; 40 to 50 parts of aromatics-rich oil; 5 to 10 parts of biomass pyrolysis oil; 8 to 15 parts of rosin; and 2 to 5 parts of a thermoplastic elastomer. The invention also discloses a preparation method of the waste and old road asphalt regenerating agent.

Description

technical field [0001] The invention belongs to the field of road building materials, and in particular relates to a waste road asphalt regeneration agent. [0002] The present invention also relates to a method for preparing the above waste road asphalt regeneration agent. Background technique [0003] Due to the needs of the development of the national economy, the mileage of traffic in our country continues to increase. So far, great achievements have been made in expressway construction. As of the end of 2012, my country's highway construction mileage has surpassed that of the United States and has leapt to the first place in the world. However, in recent years, the rapid development of the transportation industry has led to an increase in the number of vehicles and carrying capacity, and the service life of the road has been seriously reduced. According to statistics, my country now produces millions of tons of waste asphalt mixture every year. If it is not utilized,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/00C08L93/04C08L9/06C08L53/02
Inventor 曹东伟季节范勇军张海燕吴小维王涵
Owner RES INST OF HIGHWAY MINIST OF TRANSPORT
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