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A kind of asphalt mixture modifier with high water damage resistance and its preparation and application in pavement laying method

A technology for asphalt mixture and water damage, which is applied to cohesive pavement paved on site, roads, roads, etc. It can solve the problems of weak water damage resistance of road surfaces, large amount of extruded PE, and reduce material costs. Improved water damage resistance, improved rutting resistance, and reduced material costs

Active Publication Date: 2014-10-22
GUANGDONG SILVER AGE SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, first of all, the amount of extruded PE in this reference document is relatively large, and no alkaline fillers for neutralizing soil acidity are added to the modifier formula, so the pavement’s ability to resist water damage is weak; secondly, POE is a thermoplastic elastomer. The cost is high, and it is not conducive to reducing material costs when used in pavement materials

Method used

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  • A kind of asphalt mixture modifier with high water damage resistance and its preparation and application in pavement laying method

Examples

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Effect test

Embodiment 1

[0076] An asphalt mixture modifier with high resistance to water damage, which is composed of the following weight percentages of raw materials: polyethylene 60.5%, magnesium hydroxide 30%, lubricant 3.2%, antioxidant 0.8%, compatibilizer 4%, Toner 1.5%.

[0077] Among them, polyethylene is recyclable waste polyethylene, lubricant is 0.2% ethylene bis-stearamide and 3% waste engine oil, antioxidant is tetra[β-(3.5-di-tert-butyl-4-hydroxyl Phenyl) propionic acid] pentaerythritol ester, the compatibilizer is maleic anhydride grafted polyethylene, and the toner is carbon black.

[0078] The preparation method of the asphalt mixture modifier with high resistance to water damage in this embodiment includes the following steps: the first step: the polyethylene, magnesium hydroxide, lubricant, antioxidant, compatibilizer, and toner are sequentially Put it into the powder tank and stir evenly, the stirring time is 2min, the stirring speed is 1000r / min; the second step: the uniformly stirr...

Embodiment 2

[0082] An asphalt mixture modifier with high resistance to water damage, which is composed of the following weight percentages of raw materials: polyethylene 63.5%, magnesium hydroxide 25%, lubricant 7.4%, antioxidant 0.3%, compatibilizer 3%, Toner 0.8%.

[0083] Among them, polyethylene is recyclable waste polyethylene, lubricant is 0.4% ethylene bis-stearamide and 7% waste engine oil, antioxidant is 0.1% tris(2,4-di-tert-butyl phosphite) Benzene) ester and 0.2% tetra[β-(3.5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester, the compatibilizer is maleic anhydride grafted polyethylene, and the toner is carbon black.

[0084] The preparation method of the asphalt mixture modifier with high water damage resistance of this embodiment includes the following steps: the first step: the polyethylene, magnesium hydroxide, lubricant, antioxidant, compatibilizer and toner are sequentially Put it into the powder tank and stir evenly, the stirring time is 4min, the stirring...

Embodiment 3

[0088] An asphalt mixture modifier with high resistance to water damage, which is composed of the following weight percentages of raw materials: 66.5% polyethylene, 25% magnesium hydroxide, 7.4% lubricant, 0.3% antioxidant, and 0.8% toner.

[0089] Among them, polyethylene is recyclable waste polyethylene, lubricant is 0.4% ethylene bis-stearamide and 7% waste engine oil, antioxidant is 0.1% tris(2,4-di-tert-butyl phosphite) Phenyl ester and 0.2% tetra[β-(3.5-di-tert-butyl-4-hydroxyphenyl)propionic acid] pentaerythritol ester, the toner is carbon black.

[0090] The preparation method of the asphalt mixture modifier with high resistance to water damage in this embodiment includes the following steps: First step: Put polyethylene, magnesium hydroxide, lubricant, antioxidant, and toner into the powder tank in sequence Stir uniformly, the stirring time is 5min, the stirring speed is 800r / min; the second step: the uniformly stirred material is extruded and granulated with a twin-screw ...

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Abstract

The invention relates to the technical field of road materials, in particular to a high water-damage resistance asphalt mixture modifying agent, a preparation method of the high water-damage resistance asphalt mixture modifying agent, and application of the high water-damage resistance asphalt mixture modifying agent in a rod paving method. The modifying agent comprises the following raw materials by weight: 60-85% of polyethylenes, 10-35% of magnesium hydrate, 3-12% of lubricant, 0.1-0.8% of antioxidant, 0-10% of maleic anhydride grafted polyethylene, and 0.3-1.5% of carbon black. The high water-damage resistance asphalt mixture modifying agent has high dispersibility, can improve the bonding performance of aggregates and asphalt, improve the compatibility to the asphalt, and has high resistance to resist water damage on the road, and is low in material cost; the preparation and application methods of the asphalt mixture modifying agent are simple, are low in production cost, and are beneficial to general popularization and application.

Description

technical field [0001] The invention relates to the technical field of pavement materials, in particular to an asphalt mixture modifier with high resistance to water damage and its preparation and application to pavement paving methods. Background technique [0002] Asphalt mixture water damage is the main type of early damage to pavement, which not only leads to the reduction of durability and function of pavement, but also causes other pavement diseases. Therefore, the road industry generally attaches great importance to the severity of early damage to this kind of pavement. The so-called water damage is that the asphalt pavement is under the action of water or freeze-thaw cycles. Due to the dynamic load of the wheels, the water entering the pavement gap continuously generates hydrodynamic pressure or repeated cycle of vacuum negative pressure suction, and the water penetrates into the asphalt. At the interface with the aggregate, the adhesion of the asphalt is reduced, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L23/04C08L51/06C08K13/02C08K3/22C08K5/524C08K5/134C08K3/04B29B9/06E01C7/26
Inventor 傅轶王海民毕齐兵郑怀宇招启强谭颂斌
Owner GUANGDONG SILVER AGE SCI & TECH CO LTD
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