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Hydrophobic coating capable of lowering adhesion of ice layers for asphalt pavements

A technology of asphalt pavement and hydrophobic coating, which is applied in the coating and other directions to achieve the effects of excellent ice and snow removal, good pavement construction, good hydrophobic migration and hydrophobic recovery.

Inactive Publication Date: 2011-07-20
ZHEJIANG JIAOGONG HIGHWAY MANTAINANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the perspective of low-carbon energy saving, it is obvious that this technology needs to consume a large amount of precious electricity, and at the same time, due to the poor compatibility of inorganic materials and asphalt, it will also put forward high requirements for road pavement performance
If the electric heating technology of barbed wire is used, the phenomenon of water seepage in cracks will also cause the heating barbed wire to rust and break, and the later maintenance will also be very high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]In terms of weight, put 150 parts of alkaline water into the high-speed dispersion tank, increase the stirring speed, and add 5 parts of hydrophobic meteorological silica and 10 parts of hydrophobic barium sulfate to the multifunctional mixer in the order of light first and then heavy. In the process, stir at a speed of 800-1200rpm for 20min, after dispersing and mixing evenly, add 100 parts of silicone rubber emulsion with a solid content of 57%, 5 parts of ethyl acetate, 2 parts of dibutyltin dilaurate, 2 parts of dimethyl Sulfoxide, 5 parts of emulsified asphalt and 0.15 parts of 201 methyl silicone oil emulsion were stirred at a speed of 300-500 rpm for 20 minutes, and mixed uniformly to prepare component A. Mix and stir 4 parts of methyltriacetoxysilane, 0.8 part of anilinomethyltriethoxysilane and 0.15 part of 201 methyl silicone oil emulsion to prepare component B. When using, by weight, the ratio of component A / component B is 100 / 6. Slowly add component B to the ...

Embodiment 2

[0032] By weight, 100 parts of silicone rubber emulsion with a solid content of 57%, 30 parts of alkaline silica sol (solid content of 25%), 5 parts of ethyl acetate, 0.015 parts of 201 methyl silicone oil emulsion, 2 parts of dibutyltin dilaurate 1. Add 5 parts of emulsified asphalt and 2g of dimethyl sulfoxide into 250g of alkaline aqueous solution (PH: 8.5-9), stir at a speed of 300-500rpm for 20min, and mix well to prepare component A. Mix 0.8 parts of methyltriacetoxysilane, 5 parts of γ-aminopropyltriethoxysilane and 0.015 parts of 201 methyl silicone oil emulsion. When used, the ratio of component A / component B is 100 Slowly add component B to component A at a ratio of 6 / 6, then stir at a speed of 300-500rpm for 20 minutes, and mix well to obtain a double-layered product that reduces the adhesion between ice and snow and the road surface and makes ice and snow easy to shovel. One component room temperature vulcanizing silicone rubber road coating.

Embodiment 3

[0034] Asphalt Pavement Construction Depth Test and Pavement Friction Coefficient Test

[0035] Since the coating film on the road surface may have an important impact on the skid resistance (structural depth, friction coefficient) of the pavement, and the skid resistance of the pavement is an important index reflecting the safety of the pavement. Therefore, our actual pavement coating Slip resistance was tested.

[0036] Embodiment 1 and embodiment 2 structure depth detection results are listed in table 1 and table 2, and data shows that paint has less influence on the original structure depth of pavement, and the pavement structure depth that has bituminous bonding layer is than the road surface structure without asphalt bonding layer The depth is slightly smaller.

[0037] Embodiment 1 and embodiment 2 coefficient of friction testing results are listed in table 3 and table 4, and data show: the friction coefficient of coating to road surface descends slightly, belongs to t...

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Abstract

The invention relates to hydrophobic coating capable of lowering the adhesion of ice layers for asphalt pavements and relates to highway, ramps, overhead roads, bridge surfaces and other asphalt pavements. The invention provides double-component organic silicon rubber coating, which comprises components A and B, wherein the component A mainly comprises 107 organic silicon rubber emulsion, a reinforcing agent, a filler, a catalyst, a film-forming agent, a defoamer and the like; the component B comprises organic silicon crosslinking agent having multiple functional groups, silane coupling agent and the like; and a dispersion medium is alkaline distilled water or deionized water. When the coating is sprayed or brushed on the asphalt pavements and part of the coating permeates into the structural gaps of the asphalt pavements or into the surface of the aggregate, hydrophobic films are formed on the surface of the asphalt pavements. The coating can obviously reduce the adhesion of the ice layers for the asphalt pavements, so that the ice layers on the asphalt pavements can be removed easily in winter. The coating has high permeability and adhesion force for the asphalt pavements and high wear resistance and antiskid performance. In addition, the construction technique is simple, quick and widely applicable.

Description

technical field [0001] The invention relates to a hydrophobic coating that can effectively reduce the adhesion between the frozen layer and the asphalt pavement. By coating a layer of low surface energy hydrophobic coating on the asphalt pavement, the adhesion of the frozen layer to the asphalt pavement in winter can be significantly reduced, so that mechanical removal Traditional deicing methods such as rolling or tire rolling can easily remove road ice. Background technique [0002] In winter, the frozen layer formed on the asphalt pavement seriously threatens the traffic safety of vehicles. Especially in the cold and wet season, the thin ice and snow on the road surface make the skid resistance of various asphalt pavements drop sharply, which often leads to vehicle sideslip, loss of control or even rollover, which is the main reason for frequent traffic accidents in winter , bringing great hidden dangers and threats to traffic safety. Since the large-scale snowfall and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D7/12
Inventor 王声乐朱启洋朱湘张鹏飞杨朝辉
Owner ZHEJIANG JIAOGONG HIGHWAY MANTAINANCE
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