A kind of asphalt pavement anti-icing compound precision surface treatment method

Abstract

The present application discloses an anti-condensation ice composite finishing method for asphalt pavement, comprising: (a) bottom layer construction: spraying a certain amount of oily epoxy asphalt-based cement on the asphalt pavement, spreading a layer of bottom layer basalt aggregate, oily After the epoxy asphalt binder is initially set, the bottom layer is compacted, and the oily epoxy asphalt binder is cured and formed until the oily epoxy asphalt binder is consolidated; (b) Anti-freezing ice construction: sprinkle a certain amount of anti-icing agent and distribute it in the gap of the bottom basalt aggregate (c) Surface layer construction: spray a certain amount of water-based polymer-modified asphalt binder, spread a layer of basalt aggregate on the sprayed water-based polymer-modified asphalt binder, and spray the water-based polymer-modified asphalt binder. After initial setting, the surface layer is compacted; (d) Cover material construction: spray a certain amount of cover material on the surface layer, and cure and shape. The anti-condensation ice composite finishing method can improve the anti-condensation and snow melting performance of asphalt pavement.

Description

technical field [0001] The application belongs to the technical field of road construction, and in particular relates to an anti-icing compound surface treatment method for asphalt pavement. Background technique [0002] Solving driving safety on icy roads in winter is a difficult problem in the world today. Research on how to improve driving safety on icy and snowy roads, avoid or reduce traffic accidents, improve road capacity and operational efficiency, form a good road safety management model, and become a winter road At the same time, road icing has become an urgent problem to be solved in our country. The research and development of scientific and effective road surface deicing technology has very important social and economic value. [0003] The methods to solve road icing are mainly divided into passive deicing and active ice suppression. Passive deicing refers to traditional snow removal and deicing methods such as mechanical removal method and thermal deicing meth...

AI Technical Summary

Problems solved by technology

The anti-icing micro-surface maintenance material includes the following raw materials in weight percent: 8% to 14% of polymer modified emulsified asphalt, 70% to 85% of aggregate, 4% to 12% of water, and 0.5% of anti-icing agent % to 4.2% and cement 0.3% to 2.5%, which solves the problems of the lack of implementation carrier of the anti-icing agent and its poor compatibility with emulsified asphalt, but the adhesion, driving noise and service durability have not been effectively solved

[0007] CN 104164819 B discloses a hydrophobic and ice-melting non-slip road surface and its construction method. The adhesive and curing agent are sprayed on the road surface through high-pressure airless spraying equipment, and then sprinkled with aggregate. The adhesive is made of epoxy resin It is made by adding dispersants, pigments, anti-icing fillers, etc., and finally spraying a layer of super-hydrophobic polymer emulsion layer on the aggregate layer. The thickness is 2-4mm, which can prevent the road from freezing and slipping in cold weather , but the powdered anti-icing agent is used as a filler and mixed into the adhesive. With the release of the anti-icing agent during use, more pores will appear in the adhesive layer of the cement, and the strength will be seriously reduced.

Due to the structural layer principle of the anti-slip pavement design, it is directly determined that the adhesive will be used as a load-bearing structure. When the strength of the adhesive layer decreases, its function will be seriously affected, and eventually peeling and damage will result.