Water-discharging noise-lowering asphalt pavement structure of cement concrete bridge deck and laying process

Abstract

The invention discloses a water-discharging noise-lowering asphalt pavement structure of a cement concrete bridge deck. The pavement structure comprises a waterproof bonding layer, a buffer layer, a laying lower layer, a bonding layer and a laying surface layer, which are sequentially laid from bottom to top, wherein the waterproof bonding layer is laid on a cement concrete bridge deck panel; the laying surface layer is OGFC-13 upgraded asphalt mixed material, the bonding layer is a double-layer SBS modified emulsified asphalt layer, the laying lower layer is an AC-13 asphalt mixed material layer, and the buffer layer is a rubber asphalt stress absorption layer. The invention also provides a laying process of the asphalt pavement structure. Compared with an ordinary asphalt pavement, the water-discharging noise-lowering asphalt pavement structure has the advantages that the traffic noise can be reduced by 3dB to 8dB; meanwhile, rainy water can be discharged out of the pavement by virtue of a large-opening gap inside the asphalt mixed material, the water splashing and mist can be avoided, the water harm on the bridge deck can be avoided, the slipping resistance of the pavement and the driving safety of the pavement can be improved, the road property of the laying surface layer is excellent, and the durability of a bridge can be improved.

Description

technical field [0001] The invention relates to a drainage and noise-reducing asphalt pavement structure and a paving process thereof, which are mainly used in cement concrete bridge deck paving projects and belong to the field of transportation engineering. Background technique [0002] The traditional asphalt pavement layer of cement concrete bridge deck is generally single-layer or double-layer AC and SMA asphalt mixture. The current traffic volume is increasing day by day, and the phenomenon of heavy load and overload is serious. , Noise reduction and other performances drop rapidly, the road surface is seriously damaged, there are many safety hazards, and the service life of the bridge will be greatly shortened. In view of this, in order to improve the durability of the bridge, higher requirements are put forward for its pavement structure. Contents of the invention [0003] In order to solve the deficiencies in the prior art, the purpose of the present invention is ...

AI Technical Summary

Problems solved by technology

[0002] The traditional asphalt pavement layer of cement concrete bridge deck is generally single-layer or double-layer AC and SMA asphalt mixture. The current traffic volume is increasing, and the phenomenon of heavy load and overload is serious. After a period of use, the traditional pavement structure is resistant to skid and drainage. , noise reduction and other performances drop rapidly, the road surface is seriously damaged, there are many safety hazards, and the service life of the bridge will be greatly shortened

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