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Special regenerant suitable for regenerating modified asphalt and prepared method thereof

A technology of modified asphalt and rejuvenating agent, which is used in building components, building insulation materials, buildings, etc., can solve problems such as the inability to meet the regeneration requirements of modified asphalt, and achieve high temperature stability and low temperature crack resistance. The effect of easy availability of raw materials

Inactive Publication Date: 2010-01-20
JIANGSU RES INST OF BUILDING SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the existing ordinary regenerants cannot meet the regeneration requirements of modified asphalt, and to provide a regenerant that is easy to construct, low in price, and can effectively improve the high-temperature stability and low-temperature stability of waste modified asphalt mixture. Anti-crack special regeneration agent and preparation method thereof

Method used

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  • Special regenerant suitable for regenerating modified asphalt and prepared method thereof
  • Special regenerant suitable for regenerating modified asphalt and prepared method thereof
  • Special regenerant suitable for regenerating modified asphalt and prepared method thereof

Examples

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Effect test

Embodiment 1

[0023] Put 359g of vacuum residual oil and 100g of furfural extracted oil into the reactor, preheat to 130°C while stirring, add 60g of styrene-butadiene-styrene block copolymer into the reactor, and keep the above Stir at temperature for 30 minutes; then raise the temperature to 150°C, increase the stirring speed, and stir rapidly for 15 minutes; reduce the stirring speed and cool to 90°C, add 60g of 180# solvent oil, 12g of sulfur, 2g of 2,6-ditert-tert Butyl-4-methylphenol and 1g 4-methyl-6-tert-butylphenol antioxidant, 4g AS-P and 2gAD-here LOF 65-00 anti-stripping agent, keep stirring at the above temperature for 15min, and finally cool to room temperature , to produce asphalt modified regenerant SBTII-1.

Embodiment 2

[0025] Put 360g of furfural oil into the reactor, preheat to 130°C while stirring, add 90g of styrene-butadiene-styrene block copolymer into the reactor, keep stirring at the above temperature for 30min; then raise the temperature to 150°C ℃, increase the stirring speed, and stir rapidly for 15 minutes; reduce the stirring speed and cool to 90°C, add 120g of 230# solvent oil, 21g of 4,4-dimorpholine disulfide, 6g of 4-methyl-6- tert-butylphenol and 3g AD-here LOF65-00 anti-stripping agent, keep stirring at the above temperature for 15 minutes, and finally cool to room temperature to make oily viscous asphalt modified rejuvenator SBTII-2.

Embodiment 3

[0027] Put 240g of furfural extracted oil into the reactor, preheat to 130°C while stirring, add 120g of styrene-isoprene-styrene block copolymer into the reactor, keep stirring at the above temperature for 30min; then raise the temperature to 150°C, increase the stirring speed, and stir rapidly for 15 minutes; reduce the stirring speed and cool to 90°C, add 100g of 180# and 80g of 230# solvent oil, 18g of sulfur, 6g of 2,6-di-tert-butyl-4 - methylphenol and 6g AS-P anti-stripping agent, keep the above temperature and stir for 15min, and finally cool to room temperature to make oily viscous asphalt modified regeneration agent SBTII-3.

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PUM

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Abstract

The invention relates to a special regenerant suitable for regenerating modified asphalt, prepared from the following components by weight percent: 50.0-80.0 percent of heavy mineral oil, 10.0-25.0 percent of rubber or thermoplastic elastomer, 10.0-30.0 percent of high-boiling-point solvent oil, 0.5-4.0 percent of stabilizer, 0.1-1.0 percent of antioxidant and 0.1-2.0 percent of antistripping agent. A preparation method of the special regenerant comprises the following steps: a. placing the heavy mineral oil into a reaction kettle, stirring and preheating to 100-130 DEG C; b. throwing the rubber or thermoplastic elastomer into the reaction kettle, stirring for 30 min, rising the temperature of the reaction kettle to 150-170 DEG C and quickly stirring for 15 min; and c. reducing the rotate speed of the reaction kettle to a normal stirring speed, cooling to 60-90 DEG C, adding the solvent oil, the stabilizer, the antioxidant and the antistripping agent, continuously stirring to be uniform and discharging. The regenerant for the modified asphalt belongs to an oiliness system, can be stably stored and used for regeneration of recovery asphalt of an asphalt road and especially for modified asphalt, and the regenerated asphalt can reach the level of new modified asphalt.

Description

technical field [0001] The invention relates to road paving materials, in particular to a special regeneration agent for road recycling modified asphalt and a preparation method thereof. Background technique [0002] Asphalt pavement is a seamless continuous pavement, which has been widely used all over the world due to its excellent properties such as strong bearing capacity, no dust, anti-skidding, and low noise. However, with the development of the economy, the traffic flow continues to increase, the speed of the vehicle increases, and the load increases, which puts forward higher requirements for the road surface, while the ordinary asphalt pavement is easy to be brittle at low temperature and easy to soften at high temperature. Rutting, shifting, bagging and other phenomena are prone to occur under the action, which seriously affects the service life of the asphalt pavement. [0003] Compared with ordinary asphalt, modified asphalt has better road performance. The road...

Claims

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Application Information

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IPC IPC(8): C08L91/00C08L7/00C08L9/06C08L11/00C08L9/00C08L53/02C08K3/06C08K5/378C08L95/00
Inventor 缪昌文刘加平洪锦祥徐静王文峰万赟
Owner JIANGSU RES INST OF BUILDING SCI
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