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A kind of SBS modified asphalt regeneration agent and preparation method thereof

A modified asphalt and regeneration agent technology, which is applied in building components, building insulation materials, construction, etc., can solve the problems of failure to realize the recovery of SBS molecular structure, poor permeability of SBS modified asphalt film, and high viscosity of regeneration agent, etc., to achieve Effects of good compatibility, molecular weight increase, softening point and low temperature ductility recovery

Active Publication Date: 2016-07-06
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two rejuvenators use substances with high saturated and aromatic content to restore the chemical composition of aged asphalt and improve the high and low temperature performance of SBS modified asphalt through polymer modifiers (rubber or thermoplastic elastomer). It can realize the restoration of the damaged SBS molecular structure, which leads to high viscosity of the regenerant, poor permeability to the aged SBS modified asphalt membrane, and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 29 parts by mass of heavy oil heated to 130°C (softening point is 40°C, penetration is 220dmm) and 63 parts by mass of catalytic cracking oil slurry heated to 130°C (mass content of aromatic components is 58wt%) Add the catalytic cracking oil slurry to the heavy oil, stir and mix at 130°C±5°C and 150rpm for 25min, then add 4 parts by mass of furfural and 4 parts by mass of 1,4-butanediol diglycidyl ether , keep the temperature at 130°C, and continue to stir at 150 rpm for 10 minutes to obtain the SBS modified asphalt regenerant.

[0025] Weigh 93 parts by mass of aged SBS modified asphalt heated to 160°C, add 7 parts of the above-mentioned SBS modified asphalt rejuvenator, keep the temperature at 160°C, and stir at 200rpm for 30min to obtain regenerated SBS modified asphalt. The performance test of the recycled SBS modified asphalt shows that the ductility at 5°C is 25cm, the softening point is 70°C, and the penetration is 50dmm. It shows that the regenerant can ...

Embodiment 2

[0031]Weigh 28 parts by mass of heavy oil heated to 130°C (softening point is 40°C, penetration is 220dmm) and 62 parts by mass of catalytic cracking oil slurry heated to 130°C (mass content of aromatic components is 58wt%) Add the catalytic cracking oil slurry into the heavy oil, stir at 130°C±5°C and 150rpm for 25min, then add 4 parts by mass of furfural and 6 parts by mass of 1,4-butanediol diglycidyl ether, Keep the temperature at 130°C and continue to stir at 150rpm for 10min to obtain the SBS modified asphalt regenerant.

[0032] Weigh 93 parts by mass of aged SBS modified asphalt heated to 160°C, add 7 parts of the above-mentioned SBS modified asphalt rejuvenator, keep the temperature at 160°C, and stir at 200rpm for 30min to obtain regenerated SBS modified asphalt. The performance test of the recycled SBS modified asphalt shows that the ductility at 5°C is 30cm, the softening point is 72°C, and the penetration is 51dmm.

[0033] Compared with Example 1, the softening ...

Embodiment 3

[0035] Weigh 35 parts by mass of heavy oil heated to 135°C (softening point is 42°C, penetration is 210dmm) and 56 parts by mass of catalytic cracking oil slurry heated to 130°C (mass content of aromatic components is 65wt%) Add the catalytic cracking oil slurry to the heavy oil, stir at 130°C±5°C and 100rpm for 30min, then add 3 parts by mass of furfural and 6 parts by mass of 1,4-butanediol diglycidyl ether, Keep the temperature at 130°C and continue to stir at 150 rpm for 20 minutes to obtain the SBS modified asphalt regenerant.

[0036] Weigh 90 parts by mass of aged SBS modified asphalt heated to 160°C, add 10 parts of the above-mentioned SBS modified asphalt rejuvenator, keep the temperature at 160°C, and stir at 200rpm for 30min to obtain regenerated SBS modified asphalt. The performance test of the recycled SBS modified asphalt shows that the ductility at 5°C is 34cm, the softening point is 73°C, and the penetration is 55dmm. The performance of the regenerated SBS mod...

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Abstract

The invention belongs to the technical field of regeneration and utilization of waste asphalt in road engineering, and in particular relates to a SBS modified asphalt regeneration agent and a preparation method thereof. A SBS modified asphalt regeneration agent is characterized in that it is composed of heavy oil, catalytic cracking oil slurry, penetrating agent, and SBS molecular structure recovery agent; the mass percentage of each raw material is: heavy oil 20% to 45%, catalytic cracking oil slurry 40% to 75%, penetrant 1% to 5%, SBS molecular structure recovery agent 3% to 10%. Adding the revitalizer of the invention to the aged SBS modified asphalt can not only reduce the chemical composition of the asphalt, but also restore the molecular structure of the SBS modifier, and has good permeability. The rejuvenating agent can restore the performance of the aged SBS modified asphalt better.

Description

technical field [0001] The invention belongs to the technical field of regeneration and utilization of waste asphalt in road engineering, and in particular relates to a SBS modified asphalt regeneration agent and a preparation method thereof. Background technique [0002] During the use of asphalt pavement, due to the combined effects of environmental factors and traffic loads, cracks, pits and ruts are prone to occur, which deteriorates the road performance and seriously shortens the service life of asphalt pavement. To ensure road safety, asphalt pavement needs to be maintained frequently. During the repair and maintenance of asphalt pavement, a large amount of waste asphalt mixture will be produced. For example, the waste asphalt mixture is recycled and remixed with some new aggregates and some new asphalt to make recycled asphalt mixture for paving asphalt pavement, which can not only save a lot of raw materials such as asphalt and stones, but also reduce construction c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08K5/01C08K5/1515C08K5/1535
Inventor 余剑英杨慧吴少鹏秦德峰徐松彭超
Owner WUHAN UNIV OF TECH
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