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Composite modified asphalt and preparation method thereof

A technology of compound modified asphalt and petroleum asphalt, applied in building components, building insulation materials, buildings, etc., to achieve the effect of improving high temperature rutting resistance, outstanding elastic recovery rate, and high asphalt softening point

Active Publication Date: 2015-03-25
山西喜跃发道路建设养护集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These changes in the use environment have posed severe challenges to the performance of petroleum asphalt

Method used

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  • Composite modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: (1) Take 0.9 kg of nonylphenol polyoxyethylene ether, 1.1 kg of octadecyldimethylbenzyl ammonium chloride, and 9 kg of deionized water, and mix them uniformly at a temperature of 85-90°C;

[0015] (2) Heat 40 kg of No. 70 heavy-duty asphalt to 130-140 °C, then add 0.8 kg of azobisisobutyronitrile, 9 kg of 2-methyl-1,3-butadiene, and 1.5 kg of sodium pyrophosphate, Stir for 100-120 minutes at a speed of 200-300 rpm;

[0016] (3) Heat 35 kg of No. 70 heavy-duty asphalt to 115-125 °C, then add 5.5 kg of guar gum, 11 kg of polyvinyl alcohol fiber, and 2.8 kg of 8Y cubic nano-zirconia with a particle size of 20-30nm , stirring at 1500-1800 rpm for 30-40 minutes;

[0017] (4) Add the mixture in step (1) and the mixture in step (3) to the mixture in step (2) in sequence, and stir at 600-800 rpm for 40 minutes at 120-130°C ~ 50 minutes, that is.

Embodiment 2

[0018] Example 2: (1) Take 0.8 kg of nonylphenol polyoxyethylene ether, 1 kg of octadecyldimethylbenzyl ammonium chloride, and 8 kg of deionized water, and mix them uniformly at a temperature of 85-90°C;

[0019] (2) Heat 38 kg of No. 70 heavy-duty asphalt to 130-140 ° C, then add 0.8 kg of azobisisobutyronitrile, 9 kg of 2-methyl-1,3-butadiene, and 1 kg of sodium pyrophosphate, Stir for 100-120 minutes at a speed of 200-300 rpm;

[0020] (3) Heat 34 kg of No. 70 heavy-duty asphalt to 115-125 ° C, then add 5 kg of guar gum, 10 kg of polyvinyl alcohol fiber, and 2 kg of 8Y cubic phase nano-zirconia with a particle size of 20-30nm , stirring at 1500-1800 rpm for 30-40 minutes;

[0021] (4) Add the mixture in step (1) and the mixture in step (3) to the mixture in step (2) in sequence, and stir at 600-800 rpm for 40 at 120-130°C ~ 50 minutes, that is.

Embodiment 3

[0022] Example 3: (1) Take 1 kg of nonylphenol polyoxyethylene ether, 1.2 kg of octadecyldimethylbenzyl ammonium chloride, and 10 kg of deionized water, and mix them uniformly at a temperature of 85-90°C;

[0023] (2) Heat 42 kg of No. 70 heavy-duty asphalt to 130-140 °C, then add 1 kg of azobisisobutyronitrile, 10 kg of 2-methyl-1,3-butadiene, and 1.8 kg of sodium pyrophosphate, Stir for 100-120 minutes at a speed of 200-300 rpm;

[0024] (3) Heat 36 kg of No. 70 heavy-duty asphalt to 115-125 ° C, then add 6 kg of guar gum, 12 kg of polyvinyl alcohol fiber, and 3 kg of 8Y cubic nano-zirconia with a particle size of 20-30nm , stirring at 1500-1800 rpm for 30-40 minutes;

[0025] (4) Add the mixture in step (1) and the mixture in step (3) to the mixture in step (2) in sequence, and stir at 600-800 rpm for 40 at 120-130°C ~ 50 minutes, that is.

[0026] The composite modified asphalt of the present invention, the relevant experimental results of each embodiment are shown in T...

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Abstract

The invention relates to composite modified asphalt. The composite modified asphalt is prepared from the following raw materials in parts by weight: 72-78 parts of petroleum asphalt, 0.8-1 part of nonylphenol polyoxyethylene ether, 1-1.2 parts of octadecyl dimethyl benzyl aluminum chloride, 8-10 parts of deionized water, 0.8-1 part of azobisisobutyronitrile, 9-10 parts of 2-methyl-1,3-butadiene, 1-1.8 parts of sodium pyrophosphate, 5-6 parts of guar gum, 10-12 parts of polyvinyl alcohol fiber, 2-3 parts of zirconia. The composite modified asphalt provided by the invention has outstanding overall performance, has good fatigue resistance and aging resistance, excellent tensile properties, outstanding elastic recovery rate and a high softening point and can be used for significantly improving the key index such as high-temperature anti-rutting performance of an asphalt mixture.

Description

technical field [0001] The invention belongs to the field of engineering materials, and relates to a composite modified asphalt and a preparation method thereof. Background technique [0002] Many changes have taken place in modern highways and roads: the traffic flow and driving frequency have increased sharply, the axle load of freight vehicles has continued to increase, and one-way driving in separate lanes is generally implemented, which requires further improvement of the anti-flow performance of the road surface, that is, the ability to resist rutting at high temperatures; Flexibility and elasticity, that is, the ability to resist cracking at low temperatures; improve wear resistance and extend service life. Modern buildings generally use long-span prestressed roof panels, requiring roof waterproof materials to adapt to large displacements, more resistant to harsh high and low temperature climate conditions, better durability, self-adhesive, convenient construction, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/00C08L95/00C08L5/00C08L29/04C08K3/22C08K3/32C08F289/00C08F236/06C08J3/03
Inventor 乔俊擎
Owner 山西喜跃发道路建设养护集团有限公司
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