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Environmental-protection self-snow-melting asphalt pavement admixture and preparation method thereof

A technology for asphalt pavement and self-melting snow, which is applied in the field of asphalt pavement admixture and its preparation, can solve the problems of polluting the environment and wasting resources, achieve improved compaction and friction coefficient, stable performance, and reduce the incidence of traffic accidents Effect

Inactive Publication Date: 2011-06-15
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an environment-friendly self-melting snow-melting asphalt pavement admixture, on the one hand, it can reduce snow-melting with salt, and solve the problems of polluting the environment and wasting resources of existing snow-melting agents; on the other hand, it does not affect the road performance of asphalt mixture Under the premise of the road, it can effectively prevent the road from freezing for a long time, reduce the cost of road maintenance in winter, ensure the smooth flow of the road in ice and snow weather, and reduce the incidence of traffic accidents

Method used

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  • Environmental-protection self-snow-melting asphalt pavement admixture and preparation method thereof

Examples

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Effect test

example 1

[0028] Example 1: Production of self-melting snow admixture

[0029] Grind calcium chloride through a pulverizer, sieve and take 850Kg of particles with a particle size below 5mm, and pour them into a mixer. During the mixing process, the glycerin is gradually covered with calcium chloride particles, and a thin oil film is formed on the surface of the calcium chloride particles. At this time, 125Kg of sodium carbonate is put into the mixer, and the sodium carbonate powder will adhere to the surface of the calcium chloride particles. Coated particles are formed on the oil film on the surface of the calcium particles, mixed for 10 minutes, sent to a special dryer via a belt conveyor, and dried at 140°C to 160°C. The dried coated granules are sent to a sieving machine for sieving, and the coated granules with a particle size of 0.1-5mm or less are cooled to room temperature, and finally measured and packaged to obtain an environmentally friendly self-melting snow-melting asphalt ...

example 2

[0030] Example 2: Application of self-melting snow admixture

[0031] The self-melting snow admixture needs to be added to the asphalt mixture, and the use of the admixture is different from that of the general mixture.

[0032] Admixture dosage: The dosage of self-melting snow asphalt pavement admixture is mixed according to 5% of the mass of the mixture.

[0033] Mixing ratio design: The mixing ratio of the asphalt mixture with self-melting snow admixture is the same as that of the normal asphalt mixture, the difference is that the admixture is used to replace part of the mineral materials with the same particle size.

[0034] Porosity: The mixture with self-melting snow-melting admixture has a larger porosity after compaction than the mixture without this material. If the porosity is too large, the service life of the road surface will be greatly reduced, so the porosity must be strictly controlled.

[0035] Mineral powder dosage: During the mixing process of adding self-m...

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Abstract

The invention relates to an environmental-protection self-snow-melting asphalt pavement admixture and a preparation method thereof. The environmental-protection self-snow-melting asphalt pavement admixture is prepared from a component A, a component B and a component C, wherein the component A is solid particles formed by K<+> or Na<+> or Ca<2+> or Mg<2+>, and NO<3-> or SO4<2+> or CH3COO<-> or PO4<3-> or Cl<->; the component B is glycerin or silicone oil or tung oil or vaseline or lanolin; and the component C is NaOH powder or Na2CO3 powder or ore powder. The preparation method comprises the following steps: mixing the component A and the component B, so that the surface of the component A is evenly coated with a layer of component B, and the component C is attached onto the surface of the component A through the component B to form coating particles; and screening, and cooling to obtain the environmental-protection self-snow-melting asphalt pavement admixture. When in use, the admixture is added into the asphalt mixture to be used on the asphalt pavement, thereby reducing the snow melting by salt sprinkling, solving the problems of environment pollution and waste of resources when the snow melting agent is used, effectively preventing the pavement from icing for a long time, lowering the pavement maintenance cost in winter, keeping the roads clear in snowy days, and reducing the incidence rate of traffic accidents.

Description

technical field [0001] The invention relates to an asphalt pavement admixture and a preparation method thereof, in particular to an environment-friendly self-melting snow asphalt pavement admixture and a preparation method thereof. Background technique [0002] Research status of road surface ice and snow melting technology. [0003] At present, the various processing methods for melting ice and snow on the road surface can be generally divided into two categories: passive type and active type. [0004] The method of melting ice and snow on the passive road surface is to spread deicing agent after snow falls, lower the melting point of ice and snow, melt ice and snow, and then remove snow accumulation and freezing method. The ice and snow melting agents commonly used in China are mainly salts and alcohols. Alcohols have the phenomenon of anti-freezing, and the effect is not good, resulting in a substantial increase in overall costs. Salts are corrosive, and are easy to cor...

Claims

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Application Information

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IPC IPC(8): C04B24/02C04B24/08C04B24/42
Inventor 郑木莲孟建党吴淑娟李存健
Owner CHANGAN UNIV
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