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Preparation method of anti-freezing asphalt material

An asphalt material and anti-icing technology, applied in building insulation materials, building components, buildings, etc., can solve problems such as corrosion of metal materials, industrial salt legacy, damage to aquatic ecosystems and terrestrial vegetation, to prevent road icing, The preparation method is simple and the effect of reducing traffic accidents

Active Publication Date: 2015-06-03
JIANGXI GANYUE EXPRESSWAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Artificial salting requires a lot of manpower and material resources. A large amount of industrial salt left on the road and nearby areas will cause huge damage to the surrounding groundwater system, aquatic ecosystem and land vegetation, and cause corrosion to metal materials in road and bridge projects.
In addition, the artificial salting method is a method of melting the ice after the road surface has frozen, which requires road control, which is not conducive to the normal operation of the road surface

Method used

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  • Preparation method of anti-freezing asphalt material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Prepare 500 mL of saturated sodium chloride aqueous solution at 60°C, and then use hydrochloric acid to adjust the pH of the solution to 1. In addition, 4.0 g of emulsifier OP-10 and 9.2 g of diatomite were added to 500 ML of absolute ethanol, stirred vigorously for 30 minutes and then ultrasonically oscillated for 30 minutes to obtain a dispersion of diatomite in absolute ethanol. The above acidic sodium chloride solution was slowly added dropwise to the absolute ethanol dispersion under continuous stirring to produce a large amount of precipitation. The precipitate was vacuum-filtered, dried at 150°C for 12 hours, and cooled to room temperature to obtain a self-made anti-freezing filler, which was stored in a desiccator for later use.

[0020] In a temperature-controlled furnace, 50 parts by weight of the asphalt raw material is heated to a molten state, then 20 parts by weight of anti-icing filler and 30 parts by weight of quartz powder are added to the molten asphal...

Embodiment 2

[0022] Prepare 500 mL of saturated sodium chloride aqueous solution at 80°C, and then use hydrochloric acid to adjust the pH of the solution to 1. In addition, 4.0 g of emulsifier OP-10 and 6.2 g of diatomite were added to 500 ML of absolute ethanol, stirred vigorously for 30 minutes and then ultrasonically oscillated for 30 minutes to obtain a dispersion of diatomite in absolute ethanol. The above acidic sodium chloride solution was slowly added dropwise to the absolute ethanol dispersion under continuous stirring to produce a large amount of precipitation. The precipitate was vacuum-filtered, dried at 150°C for 12 hours, and cooled to room temperature to obtain a self-made anti-freezing filler, which was stored in a desiccator for later use.

[0023] In a temperature-controlled furnace, 50 parts by weight of the asphalt raw material is heated to a molten state, then 30 parts by weight of anti-icing filler and 20 parts by weight of quartz powder are added to the molten asphal...

Embodiment 3

[0025] Prepare 500 mL of saturated sodium chloride aqueous solution at 80°C, and then use hydrochloric acid to adjust the pH of the solution to 1. In addition, 4.0 g of emulsifier OP-10 and 7.3 g of diatomaceous earth were added to 500 ML of absolute ethanol, stirred vigorously for 30 minutes and then ultrasonically oscillated for 30 minutes to obtain a dispersion of diatomite in absolute ethanol. The above acidic sodium chloride solution was slowly added dropwise to the absolute ethanol dispersion under continuous stirring to produce a large amount of precipitation. The precipitate was vacuum-filtered, dried at 150°C for 12 hours, and cooled to room temperature to obtain a self-made anti-freezing filler, which was stored in a desiccator for later use.

[0026] In a temperature-controlled furnace, 50 parts by weight of the asphalt raw material is heated to a molten state, then 40 parts by weight of anti-icing filler and 10 parts by weight of quartz powder are added to the molt...

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Abstract

The invention discloses a preparation method of an anti-freezing asphalt material. The preparation method comprises the following steps of: heating 20-50 parts by weight of raw material asphalt in a temperature control furnace till the raw material asphalt is molten, then, adding 5-50 parts by weight of an anti-freezing filler and 5-50 parts by weight of quartz powder into the molten asphalt, and uniformly stirring; and pouring a sticky mixture into a pre-heated aluminium-made mould to naturally level while the sticky mixture is hot, cooling to room temperature, and polishing the surface of a sample by using metallographical abrasive paper with certain meshes so as to obtain the anti-freezing asphalt material. The preparation method of the anti-freezing asphalt material disclosed by the invention is simple; the use amount of sodium chloride in the traditional salt deicing method can be greatly reduced; the anti-freezing asphalt material has the anti-freezing effect on water droplets with super-cooled surfaces in the range of 0-8 DEG C; even frozen at a lower temperature (such as -15 DEG C), the ice melting rate is rapider than that of the common surface; the asphalt material disclosed by the invention can be used for paving highway pavement and is capable of preventing the highway pavement from freezing in the range of 0-8 DEG C; and therefore, traffic accidents are reduced.

Description

technical field [0001] The invention relates to a method for preparing an anti-icing asphalt material, in particular to a method for preparing an asphalt material capable of preventing supercooled droplets on the surface from freezing within the temperature range of 0 to -8°C. Background technique [0002] Compared with traditional gravel pavement, asphalt pavement has higher strength and stability. Compared with cement concrete pavement, it has the advantages of smooth surface, low driving noise, small vibration, and simple maintenance. It is an important structural form of highway pavement in my country. The asphalt pavement is easy to freeze in winter, and the highways in most provinces of our country have suffered from severe freezing in winter, which has caused difficulties to the normal operation of the highway. The main hazards caused by icy roads to expressway transportation are traffic interruption, low-speed slow-moving, frequent traffic accidents and even car cra...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08K9/04C08K3/34C08K3/36C08K3/16
Inventor 邹友泉陶勇根吁新华刘静
Owner JIANGXI GANYUE EXPRESSWAY
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