Slow-release salt-melting material for road surface thin ice, ice- inhibiting fog sealing layer material and application

Abstract

The invention discloses a slow-release salt-melting material for road surface thin ice and an ice-inhibiting fog sealing layer material. An ice-melting salt is dissolved into high-temperature water atthe maximum concentration to prepare a saturated solution of the ice-melting salt, diatomite powder is added to adsorb and store ice-melting salt ions to obtain an adsorption salt, the adsorption salt is dried and crushed to obtain the slow-release salt-melting material, and the slow-release salt-melting material is mixed with slow-breaking emulsified asphalt to obtain the ice-inhibiting fog sealing layer material. The diatomite salt storage material in the ice-inhibiting fog sealing layer absorbs water when being wetted and escapes along with salt, and the demulsification curing time is shorter than that of a pure emulsified asphalt fog sealing layer, so that rapid opening of traffic is facilitated; meanwhile, the diatomite can adsorb the asphalt droplets, a large amount of structural asphalt with a high strength is formed around the asphalt droplets, and the durability of the pure emulsified asphalt fog sealing layer is improved.

Description

technical field

[0001] The invention belongs to the field of environmental technology, and in particular relates to a preparation method and application of an ice-fog suppressing sealing layer material. Background technique

[0002] The winter climate in the mountainous areas of central and southern my country is characterized by sunny, cold and rainy weather, and roads are prone to freezing in the early morning. The research on the characteristics of this climate shows that the application range of the anti-ice fog seal is very wide, and it is suitable for the winter road conditions of small ice and snow in many areas in the central and southern regions. Because such areas are located in areas with high humidity such as mountainous areas, and the temperature at night in winter is low, it is easy to form a layer of ice film on the road surface when it rains. Common chemical deicing methods not only pollute the environment, but also waste deicing agent too much. Thin ice on...

Examples

Embodiment 1

[0028] This embodiment provides a slow-release molten salt material for road surface thin ice. The preparation method specifically includes the following steps:

[0029] (1) Place the Erlenmeyer flask in a water bath stirring pot at 80°C, and configure 30-50 parts of saturated sodium chloride solution.

[0030] (2) Add 10-20 parts of diatomaceous earth to the solution sample, and stir magnetically for a certain period of time.

[0031] (3) Suction filter the mixture of diatomaceous earth and sodium chloride solution. After the suction filtration is completed, slowly add 30-50 parts of deionized water to wash, while washing and suction filtration, place it in a low-temperature oven for a certain period of time, crush it and then dry it Dry to constant weight.

Embodiment 2

[0033] This embodiment provides a sealing layer material for suppressing ice fog, and the preparation method specifically includes the following steps:

[0034] Step 1, implement diatomite adsorption salt storage process according to Example 1.

[0035] Step 2, the proportioning process of salt storage material and emulsified asphalt is:

[0036] (1) Weigh 2-4 parts of the salt storage material, 6-8 parts of the emulsified asphalt, and 1 part of water. Pour the salt storage material into the emulsified asphalt step by step, and finally pour in water, and use a mixer at 200r / min Speed ​​to mix well.

[0037] (2) Maintain the mist seal layer material at a temperature of 10°C for storage.

[0038] In the ice suppression test procedure of the fog seal layer, the Marshall test piece with AC-13 gradation was used to simulate the surface of the asphalt road, and the ice and fog seal layer was brushed on the Marshall test piece. The phase state of the water layer is characterized by ...

technical field

[0001] The invention belongs to the field of environmental technology, and in particular relates to a preparation method and application of an ice-fog suppressing sealing layer material. Background technique

[0002] The winter climate in the mountainous areas of central and southern my country is characterized by sunny, cold and rainy weather, and roads are prone to freezing in the early morning. The research on the characteristics of this climate shows that the application range of the anti-ice fog seal is very wide, and it is suitable for the winter road conditions of small ice and snow in many areas in the central and southern regions. Because such areas are located in areas with high humidity such as mountainous areas, and the temperature at night in winter is low, it is easy to form a layer of ice film on the road surface when it rains. Common chemical deicing methods not only pollute the environment, but also waste deicing agent too much. Thin ice on...

Examples

Embodiment 1

[0028] This embodiment provides a slow-release molten salt material for road surface thin ice. The preparation method specifically includes the following steps:

[0029] (1) Place the Erlenmeyer flask in a water bath stirring pot at 80°C, and configure 30-50 parts of saturated sodium chloride solution.

[0030] (2) Add 10-20 parts of diatomaceous earth to the solution sample, and stir magnetically for a certain period of time.

[0031] (3) Suction filter the mixture of diatomaceous earth and sodium chloride solution. After the suction filtration is completed, slowly add 30-50 parts of deionized water to wash, while washing and suction filtration, place it in a low-temperature oven for a certain period of time, crush it and then dry it Dry to constant weight.

Embodiment 2

[0033] This embodiment provides a sealing layer material for suppressing ice fog, and the preparation method specifically includes the following steps:

[0034] Step 1, implement diatomite adsorption salt storage process according to Example 1.

[0035] Step 2, the proportioning process of salt storage material and emulsified asphalt is:

[0036] (1) Weigh 2-4 parts of the salt storage material, 6-8 parts of the emulsified asphalt, and 1 part of water. Pour the salt storage material into the emulsified asphalt step by step, and finally pour in water, and use a mixer at 200r / min Speed ​​to mix well.

[0037] (2) Maintain the mist seal layer material at a temperature of 10°C for storage.

[0038] In the ice suppression test procedure of the fog seal layer, the Marshall test piece with AC-13 gradation was used to simulate the surface of the asphalt road, and the ice and fog seal layer was brushed on the Marshall test piece. The phase state of the water layer is characterized by ...