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A kind of modified asphalt pavement material and preparation method thereof

A modified asphalt, road technology, applied in building insulation materials, climate sustainability, sustainable waste treatment, etc., to achieve the effects of enhanced adhesion, increased toughness, and increased strength

Active Publication Date: 2019-06-07
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the current modified asphalt materials are only limited to the use of reinforcing substances such as rubber alone, and modified asphalt is still difficult to fundamentally solve the problems of anti-cracking and anti-rutting of asphalt pavement

Method used

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  • A kind of modified asphalt pavement material and preparation method thereof
  • A kind of modified asphalt pavement material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The raw materials are proportioned according to the following parts by mass:

[0027] 80 parts of aggregate, 8 parts of petroleum asphalt, 1-3 parts of bauxite, 1.0 part of urethane resin, 5 parts of rubber powder particles, 1 part of ethylene-vinyl acetate copolymer, and 1 part of polyvinyl alcohol fiber.

[0028] Prepare modified asphalt pavement materials according to the following steps:

[0029] 1) Preheat and soften the petroleum asphalt at 70°C, add aggregates and bauxite in proportion to the base asphalt, keep the temperature at 80°C, stir in a high-speed shear for 5 minutes at a speed of 360r / min, and obtain a mixture;

[0030] 2) According to the proportion, add urethane resin, rubber powder particles, and ethylene-vinyl acetate copolymer to the above mixture, stir and mix evenly, raise the temperature to 180°C, and set aside; then add polyvinyl alcohol fiber according to the proportion, stir for 1min, The modified asphalt pavement material is obtained.

Embodiment 2

[0032] 75 parts of aggregate, 10 parts of petroleum asphalt, 3 parts of bauxite, 1.0 part of urethane resin, 7 parts of rubber powder particles, 1 part of ethylene-vinyl acetate copolymer, and 0.5 part of polyvinyl alcohol fiber.

[0033] Prepare modified asphalt pavement materials according to the following steps:

[0034] 1) Preheat and soften the petroleum asphalt at 80°C, add aggregates and bauxite in proportion to the base asphalt, keep the temperature at 80°C, stir in a high-speed shearer for 10 minutes at a speed of 240r / min, and obtain a mixture ;

[0035] 2) According to the proportion, add urethane resin, rubber powder particles, and ethylene-vinyl acetate copolymer to the above mixture, stir and mix evenly, raise the temperature to 190°C, and set aside; then add polyvinyl alcohol fiber according to the proportion, and stir for 2 minutes. The modified asphalt pavement material is obtained.

Embodiment 3

[0037] 75 parts of aggregate, 10 parts of petroleum asphalt, 3 parts of bauxite, 1.0 part of urethane resin, 5 parts of rubber powder particles, 1 part of ethylene-vinyl acetate copolymer, and 0.5 part of polyvinyl alcohol fiber.

[0038] Prepare modified asphalt pavement materials according to the following steps:

[0039] 1) Preheat and soften the petroleum asphalt at 100°C, add aggregates and bauxite in proportion to the base asphalt, keep the temperature at 80°C, and stir in a high-speed shear for 5 minutes at a speed of 360r / min to obtain a mixture;

[0040] 2) According to the proportion, add urethane resin, rubber powder particles, and ethylene-vinyl acetate copolymer to the above mixture, stir and mix evenly, raise the temperature to 195°C, and set aside; then add polyvinyl alcohol fiber according to the proportion, and stir for 5 minutes. The modified asphalt pavement material is obtained.

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Abstract

The invention provides a modified asphalt pavement material and a preparation method thereof. The modified asphalt pavement material is characterized by comprising the following raw materials in partsby weight: 70-80 parts of aggregate, 8-10 parts of petroleum asphalt, 1-3 parts of bauxite, 0.5-2.0 parts of urethane resin, 5-10 parts of rubber powder particles, 1-2 parts of ethylene vinyl acetatecopolymer and 0.2-2 parts of polyvinyl alcohol fiber. The modifier is added to the asphalt material, the crack resistance of the obtained modified asphalt pavement material is improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to the field of paving materials for pavement, in particular to a modified asphalt road material for paving pavement. Background technique [0002] Asphalt pavement materials are organic binders commonly used in road construction. The asphalt pavement paved with it has good technical performance. With the rapid development of traffic, asphalt pavement has higher and higher requirements for materials. Generally, it is necessary to improve the high temperature stability of asphalt pavement and prolong the life of the road. In the prior art, the method of modification and reinforcement can effectively improve the service performance of the pavement. [0003] The way to improve the high temperature stability of asphalt mixture is to mix various modifier materials into asphalt or asphalt mixture, including rubber powder, styrene-butadiene rubber (SBS), anti-rutting agent, etc. Among them, SBS modified asphalt is the most widely used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C04B26/26C04B14/30C04B24/28C04B18/22C04B16/06
CPCC04B14/303C04B16/0641C04B18/22C04B24/282C04B26/26C04B2111/0075C04B2201/50C04B24/2623C04B14/06C04B14/02Y02W30/91
Inventor 谢晶邵腊庚黄拓黄梅芳金娇
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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