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Rubber powder asphalt and preparation method thereof

A technology of rubber powder and asphalt

Active Publication Date: 2014-02-26
HEBEI LUNTE PETROLEUM CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is: 2,4,7,9-tetramethyl-5-decyne-4,7-diol price is high, has increased production cost, and stirring reaction time is long, and temperature is high, has increased production capacity consumption

Method used

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  • Rubber powder asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A rubber powder asphalt, comprising the following components in mass percentage: 35% of rubber powder, 0.3% of B-450 high-efficiency activator, 2% of lignosulfonate, and the balance being base asphalt.

[0026] The above base asphalt is No. 70 heavy traffic road petroleum asphalt; the particle size of the rubber powder is 30 mesh, the ash content is less than 10%, and the sieve residue is less than 8%.

[0027] The preparation method is as follows: according to the above mass percentage, heat the base asphalt to 180 ° C ~ 190 ° C, add 20% rubber powder and 0.3% B-450 high-efficiency activator under stirring; then use a colloid mill for the first grinding, Then enter another colloid mill for the second grinding, and grind for the second time until the average particle size of the rubber powder is 0.1-0.3 mm; then add 2% lignosulfonate under stirring, and then add 15% rubber powder; Grind for the third time with a colloid mill until the average particle size of the rubber...

Embodiment 2

[0029] A rubber powder asphalt, comprising the following components in mass percentage: 38% of rubber powder, 0.3% of B-450 high-efficiency activator, 3% of lignosulfonate, and the balance being base asphalt.

[0030] The above base asphalt is No. 70 heavy traffic road petroleum asphalt; the particle size of the rubber powder is 50 mesh, the ash content is less than 10%, and the sieve residue is less than 8%.

[0031] The preparation method is as follows: according to the above mass percentage, heat the base asphalt to 180 ° C ~ 190 ° C, add 20% rubber powder and 0.3% B-450 high-efficiency activator under stirring; then use a colloid mill for the first grinding, Then enter another colloid mill for the second grinding, and grind for the second time until the average particle size of the rubber powder is 0.1-0.3 mm; then add 3% lignosulfonate under stirring, and then add 18% rubber powder; Grind for the third time with a colloid mill until the average particle size of rubber pow...

Embodiment 3

[0033] A rubber powder asphalt, comprising the following components in mass percentage: 40% of rubber powder, 0.3% of B-450 high-efficiency activator, 5% of lignosulfonate, and the balance being base asphalt.

[0034] The above base asphalt is No. 70 heavy traffic road petroleum asphalt; the particle size of the rubber powder is 40 mesh, the ash content is less than 10%, and the sieve residue is less than 8%.

[0035] The preparation method is as follows: according to the above mass percentage, heat the base asphalt to 180 ° C ~ 190 ° C, add 20% rubber powder and 0.3% B-450 high-efficiency activator under stirring; then use a colloid mill for the first grinding, Then enter another colloid mill for the second grinding, and grind for the second time until the average particle size of the rubber powder is 0.1-0.3 mm; then add 5% lignosulfonate under stirring, and then add 20% rubber powder; Grind for the third time with a colloid mill until the average particle size of the rubber...

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Abstract

The invention discloses rubber powder asphalt and a preparation method thereof and relates to the technical field of compositions of asphalt materials. The rubber powder asphalt disclosed by the invention comprises the following components in percent by mass: 35-40 percent of rubber powder, 0.3 percent of B-450 high-efficiency activating agent, 2-5 percent of lignosulfonate and the balance of matrix asphalt. The invention also provides a method for preparing the rubber powder asphalt. Each component in the rubber powder asphalt is low in price, the addition amount of the rubber powder is 35-40 percent, and the cost is low. Moreover, the stirring time is short in the preparation process, the temperature is low, the production energy consumption is reduced, the productivity is increased, and the performance requirements of road engineering on the asphalt can be met.

Description

technical field [0001] The invention relates to the technical field of asphalt material composition. Background technique [0002] Rubber powder asphalt (Asphalt Rubber) is to add rubber powder to asphalt through a certain production process to form a modified asphalt with rubber powder as a modifier, which is used to improve the relevant performance indicators of asphalt. According to the definition of American ASTM6144-97 standard, the content of rubber powder is not less than 15%, and it must fully react with asphalt at a high temperature above 180°C. [0003] Rubber powder is made from waste tires, and the price is much cheaper than asphalt. Therefore, the amount of rubber powder added has a great impact on the production cost of rubber powder asphalt, but the biggest feature of rubber powder asphalt is high viscosity. Affected by viscosity, the amount of rubber powder added It cannot be very large, which directly affects the production cost of rubber powder asphalt. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L21/00C08L97/00
Inventor 王国强于文国
Owner HEBEI LUNTE PETROLEUM CHEM
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