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Bitumen recycling agent for improving high temperature stability of waste and old bitumen mixture

A technology of high-temperature stability and asphalt regenerant, which is applied in the direction of building insulation materials, building components, buildings, etc., can solve the problems of unsatisfactory regeneration effect, restrictions on popularization and application, and complex components, so as to reduce project cost, facilitate use, and prepare The effect of simple process

Inactive Publication Date: 2008-05-14
SHENZHEN OCEAN POWER INDUSTRIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing imported asphalt rejuvenators are restricted in their popularization and application in the domestic market due to their complex composition and high price; while domestic regenerants are mainly light oils produced by some petroleum industries such as lubricating oil, diesel oil, engine oil or their The mixture is used to modify old materials, but due to the single composition, the regeneration effect is not ideal. A certain amount of new asphalt must be mixed into the old asphalt to meet the requirements of high-grade pavement.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Heat 95g of furfural extracted oil to 100°C under stirring, weigh 20g of benzofuran-resin and 3.5g of sasobit, put them into the above furfural extracted oil, stir at 100°C for 30min, cool to 65°C, add 0.3g of 6-ethoxy Base-2,2,4-trimethyl-1,2-dihydroquinoline and 0.3g 2-hydroxy-4-methoxybenzophenone, stirred for 50min, cooled to 25°C, and made viscous brown waste Asphalt regeneration agent 124.1g. Take 50g of the prepared waste asphalt regeneration agent, add it to 500g of aged Shell-70# asphalt recovered from waste, and stir at 135°C for 30min to obtain the regenerated asphalt.

[0023] The comparison between the index of regenerated asphalt and the aged waste asphalt before regeneration is as follows:

[0024] asphalt

Embodiment 2

[0026] Use propane deasphalted asphalt 70g instead of furfural to extract oil, C 9 25g of petroleum resin, 0.1g of anti-aging agent N-phenyl-β-naphthylamine, 1g of anti-ultraviolet auxiliary agent 2-hydroxy-4-methoxybenzophenone, and 2g of high-temperature stabilizer UBM. Preparation process is the same as example 1. Regenerate Lanlian AH-90# with the prepared waste asphalt regenerator to obtain regenerated asphalt.

[0027] The comparison between the index of regenerated asphalt and the aged waste asphalt before regeneration is as follows:

[0028] asphalt

Embodiment 3

[0030] Replace furfural extract oil with 60g of minus three or minus four distillates of naphthenic crude oil and 20g of corn oil, C 9 Petroleum resin 5g, anti-aging agent N-phenyl-β-naphthylamine 0.5g and 2,6-di-tert-butyl-4-methylphenol 0.5g, anti-ultraviolet additive 2-hydroxy-4-methoxydiphenyl Methanone 0.1g, high temperature stabilizer UBM 5g. Preparation process is the same as example 1. Maoming AH-90# was regenerated with the prepared waste asphalt regenerator to obtain regenerated asphalt.

[0031] The comparison between the index of regenerated asphalt and the aged waste asphalt before regeneration is as follows:

[0032] asphalt

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PUM

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Abstract

The invention discloses an asphalt regenerator for improving the high temperature stability for mixing material of waste asphalt. According to the parts by weight, the components are as below: 70 to 95 of refinery waste rich in aromatic fraction and colloid; 5 to 25 of resin; 0.1 to 1 of antioxidant; 0.1 to 1 of anti-ultraviolet addition agent; 2 to 5 of stabilizing agent for high temperature. The invention also discloses the preparation method for the asphalt regenerator. Aiming at aged asphalt property in waste asphalt mixing material, the invention adds the resin, the antioxidant and the anti-ultraviolet addition agent in refinery waste rich in aromatic fraction and colloid and makes rational selection and matching for material of each material. The invention has the advantages of easy availability for raw material, low requirement for equipments, simple preparing art and convenient use. The invention obviously improves stability of high temperature for regenerated asphalt mixing material and other active results, lowers construction cost and is suitable for green ecological and sustainable development.

Description

【Technical field】 [0001] The invention relates to the technical field of manufacturing auxiliary materials for asphalt processing, in particular to an asphalt regeneration agent for improving the high-temperature stability of waste asphalt mixture. 【Background technique】 [0002] Research on waste asphalt mixture regeneration application technology has been a topic that people have been paying attention to. As early as 1915, the United States began to study this aspect. By the early 1980s, more than 40 states in the United States used recycled asphalt mixture, and the number of uses increased rapidly. At present, the recycling rate of waste asphalt mixture in the United States has reached more than 80%. [0003] In the mid-1970s, Japan and some European countries such as the Federal Republic of Germany, the Netherlands, and Finland successively carried out experimental research and rapidly promoted the application. The practical technology and equipment of on-site cold recy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08K11/00C08K5/3437C08K5/07C08K5/18
Inventor 高云龙何唯平
Owner SHENZHEN OCEAN POWER INDUSTRIAL CO LTD
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