A drainage pavement structure with functions of deicing and snow melting

Abstract

The invention discloses a drainage road pavement structure with deicing and snow-melting functions. The drainage road pavement structure with the deicing and snow-melting functions comprises a waterproof bonding layer paved on a ground-surface base layer. Asphalt mixture drainage layers are paved on the waterproof bonding layer, the asphalt mixture drainage layers comprise the lower drainage layer, the middle drainage layer and the upper drainage layer which are sequentially paved from bottom to top, the lower drainage layer is an asphalt mixture with the porosity being 3-5%, the middle drainage layer is an open-graded snow-melting asphalt mixture with the porosity being 20-25%, the upper drainage layer is an open-graded snow-melting asphalt mixture with the porosity being 18-20%, and pores of the middle drainage layer communicate with pores of the upper drainage layer; and a rubber particle layer is arranged on the upper drainage layer, the thickness of the waterproof bonding layer is 1-2 cm, the thickness of the lower drainage layer is 7-9 cm, the thickness of the middle drainage layer is 4-6 cm, and the thickness of the upper drainage layer is 1.5-2.5 cm. According to the drainage road pavement structure with the deicing and snow-melting functions, the snow-melting and deicing efficiency can be improved, the pavement surface frictional force is improved, the compaction of the vehicle to the drainage pores is reduced, the repairing and maintenance cost is saved, and the drainage road pavement structure has good generalization performance.

Description

technical field [0001] The invention relates to the field of pavement drainage, in particular to a drainage pavement structure with deicing and snow melting functions. Background technique [0002] Water on the road will affect driving safety. If the accumulated water cannot be discharged from the road surface in time, water drift will form between the tires and the road surface when the vehicle is driving at high speed, which will greatly reduce the braking performance of the vehicle and increase the braking distance, thereby inducing traffic accidents. In addition, our country has a vast territory, and the temperature in most parts of the country will drop below zero degrees Celsius in winter. In wet and cold weather, the water on the road will condense into ice, which will affect the safety and comfort of driving. The situation is particularly serious in the severe cold regions of the north. According to literature data, the adhesion coefficient between tires and dry a...

AI Technical Summary

Problems solved by technology

In addition, since the functional coating is located on the pavement surface, under the repeated action of vehicle loads in summer and autumn, the coating has a certain degree of wear and tear, and its deicing and snow melting ability in winter is weakened.

[0012] The road surface that uses thermal energy to melt snow: the disadvantage is that the investment cost is high, and when the equipment fails, the road surface needs to be demolished, and the internal heating system needs to be repaired, and the maintenance cost is high

In addition, the provision of heat energy needs to consume other forms of energy, and the operating cost is high

[0013] Pavements containing rubber asphalt materials: the disadvantage is that waste rubber particles are added to the asphalt mixture in the form of aggregates, which changes the material composition and mechanical characteristics of the asphalt mixture to a certain extent, so the asphalt pavement containing rubber particles Road performance and service life need further study

Images