CN218842760U

CN218842760U - Pavement structure

Info

Publication number: CN218842760U
Application number: CN202221930934.1U
Authority: CN
Inventors: 李季; 程飞; 鲍文敏; 周青
Original assignee: Chengdu Municipal Development Corp
Current assignee: Chengdu Municipal Development Corp
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2023-04-11
Anticipated expiration: 2032-07-25

Abstract

The utility model relates to a road surface structure, the layer of making an uproar falls by lower supreme stress absorbing layer, first modified asphalt layer, the modified asphalt layer of second, the drainage of having laid in proper order in the road surface department of restoreing of waiting of fracture, the stress absorbing layer is laid on former road bed, the thickness on first modified asphalt layer is greater than the thickness on the modified asphalt layer of second, it splits the net piece to have laid the self-adhesive formula between stress absorbing layer and the first modified asphalt layer, the crack department on the road surface is laid to the anti net piece that splits of self-adhesive formula. Aim at adopts the combined type road surface to set up anti crack net piece in the composite bed, in order to increase the functional and the travelling comfort on road surface, still set up the surface hardening agent layer on the surface on road surface, the utility model discloses a road surface structure, applicable laying in the new road surface, also applicable is to the repair to the crack department road surface.

Description

Pavement structure

Technical Field

The utility model belongs to the technical field of road restoration, concretely relates to road surface structure.

Background

Along with the development of road traffic, people also are higher and higher to the requirement on road surface, the travelling strength of the road surface is guaranteed at all times, the comfort of the road surface is guaranteed at the same time, therefore, the composite road surface is produced at the same time, but in the process of long-term use of the road surface, cracks can not be avoided to appear on the road surface due to overlarge pressure of the road, when the cracks appear on the road surface, the road surface with problems needs to be maintained, thereby the road surface is guaranteed to be always in an effective use state, and therefore, the maintenance on the road surface at the cracks is very important.

SUMMERY OF THE UTILITY MODEL

In order to solve the maintenance to crack department road surface, the utility model provides a road surface structure, this road surface structure adopt combined type road surface to set up anti crack net piece in the composite bed, for the functional and the travelling comfort that increase the road surface, still set up the surface hardening agent layer on the surface on road surface, the utility model discloses a road surface structure, applicable laying in the new road surface, also applicable repair to the repair in crack department road surface.

The utility model adopts the technical proposal that: the utility model provides a road surface structure, this road surface structure by lower supreme stress absorbing layer, first modified pitch layer, the modified pitch layer of second, the layer of making an uproar falls in the drainage of having laid in proper order, the stress absorbing layer is laid on former road bed, the thickness on first modified pitch layer is greater than the thickness on the modified pitch layer of second, the crack net piece that splits is prevented to self-adhesive has been laid between stress absorbing layer and the first modified pitch layer, crack department on the road surface is laid to the crack net piece that splits of self-adhesive.

Preferably, a modified asphalt synchronous macadam seal coat is arranged between the drainage noise reduction coat and the second modified asphalt coat, and the stone coverage rate in the modified asphalt synchronous macadam seal coat is 60-70%.

Preferably, the self-adhesive anti-cracking mesh comprises a long fiber polyester felt layer arranged in the middle and isolation layers arranged on two sides of the long fiber polyester felt layer.

Preferably, a surface enhancer layer is sprayed on the drainage noise reduction layer, and the surface enhancer layer is made of water-based polymer emulsified asphalt.

Preferably, the first modified asphalt layer is a modified asphalt AC-20C and/or modified asphalt concrete leveling layer, and the thickness of the modified asphalt AC-20C layer and the modified asphalt concrete leveling layer is 6cm.

Preferably, the second modified asphalt layer is a modified asphalt SMA-13 layer, and the thickness of the second modified asphalt layer is 4cm.

Preferably, the drainage noise reduction layer is a high-viscosity modified asphalt drainage noise reduction pavement OGFC-13, and the thickness of the drainage noise reduction layer is 4cm.

The utility model discloses following beneficial effect has: the utility model adopts the composite pavement, improves the comfort of the pavement, and arranges the anti-crack net sheet in the composite layer, prolongs the service life of the pavement, and can also arrange the anti-crack net sheet at the crack when repairing the pavement, thereby ensuring the service life of the pavement repairing part; the surface layer of the pavement is provided with the drainage noise reduction layer and the surface hardening agent layer, so that the functionality and the comfort of the pavement are further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the patent structure of the present invention.

In the figure: 1-original roadbed; 2-a stress absorbing layer; 3-a first modified asphalt layer; 5-a second modified asphalt layer; 6-modified asphalt synchronous chip sealing; 7-drainage noise reduction layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus, it should not be construed as limiting the present invention.

As shown in fig. 1, a road surface structure is provided, which is sequentially laid with a stress absorption layer 2, a first modified asphalt layer 3, a second modified asphalt layer 5 and a drainage noise reduction layer 7 from bottom to top, wherein the stress absorption layer 2 is laid on an original roadbed 1, the thickness of the first modified asphalt layer 3 is larger than that of the second modified asphalt layer 5, a self-adhesive anti-cracking net piece is laid between the stress absorption layer 2 and the first modified asphalt layer 3, and the self-adhesive anti-cracking net piece is laid at the crack of the road surface. The utility model discloses a road surface structure can be used for new road surfacing, also can be used to the restoration of road surface crack department.

A modified asphalt synchronous macadam seal coat 6 is arranged between the drainage noise reduction coat 7 and the second modified asphalt layer 5, and the stone coverage rate in the modified asphalt synchronous macadam seal coat 6 is 60-70%.

The self-adhesive anti-cracking mesh comprises a long-fiber polyester felt layer arranged in the middle and isolation layers arranged on two sides of the long-fiber polyester felt layer. When the anti-crack net sheet is laid, the anti-crack net sheet can be laid at the joint position of a new road surface and an old road surface and also can be laid at a crack, if the original road bed 1 is a cement concrete road surface, the anti-crack net sheet is centrally laid at the joint position, the anti-crack net sheet takes a long fiber polyester felt layer as a base, takes a styrene-butadiene-styrene (SBS) thermoplastic elastomer as a petroleum asphalt modifier, and the two surfaces are coated with isolating material layers, so that the adhesion between the anti-crack net sheet and the cement concrete road surface can be ensured by adopting a hot melting method.

And a surface hardening agent layer is sprayed on the drainage noise reduction layer 7, and the surface hardening agent layer is made of water-based polymer emulsified asphalt.

The utility model discloses in, first modified asphalt layer 3 is modified asphalt AC-20C and/or modified asphalt concrete leveling layer, the thickness on modified asphalt AC-20C layer, modified asphalt concrete leveling layer is 6cm. That is, the first modified asphalt layer 3 can be a single 6cm modified asphalt AC-20C layer, or a single 6cm modified asphalt concrete leveling layer, or a combination of a 6cm modified asphalt AC-20C layer and a 6cm modified asphalt concrete leveling layer, or two 6cm modified asphalt AC-20C layers.

The second modified asphalt layer 5 is a modified asphalt SMA-13 layer, and the thickness of the second modified asphalt layer 5 is 4cm. The drainage noise reduction layer 7 is a high-viscosity modified asphalt drainage noise reduction pavement OGFC-13, and the thickness of the drainage noise reduction layer 7 is 4cm. Flocculent lignin fiber with good quality is preferably doped in the drainage noise reduction layer 7, and the flocculent lignin fiber has the characteristics of strong asphalt adsorption capacity and good construction dispersibility, so that the stability is improved.

It should be appreciated by those skilled in the art that the above embodiments are only preferred embodiments of the present invention to illustrate the technical solution of the present invention, but not to limit the technical solution, and certainly not to limit the scope of the present invention; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention; that is, the technical problems solved by the present invention are still consistent with the present invention, and all the modifications or colors made in the spirit and the idea of the main design of the present invention are included in the protection scope of the present invention; in addition, will the technical scheme of the utility model direct or indirect application is in other relevant technical field, all including on the same reason the utility model discloses an in the patent protection scope.

Claims

1. A pavement structure, characterized in that: this road surface structure is laid stress absorbing layer (2), first modified asphalt layer (3), second modified asphalt layer (5), drainage in proper order by supreme down and is fallen layer (7) of making an uproar, stress absorbing layer (2) are laid on former road bed (1), the thickness on first modified asphalt layer (3) is greater than the thickness on second modified asphalt layer (5), laid the anti net piece that splits of self-adhesive between stress absorbing layer (2) and first modified asphalt layer (3), the crack department on the road surface can be laid to the anti net piece that splits of self-adhesive.

2. A pavement structure according to claim 1, characterized in that: and a modified asphalt synchronous crushed stone sealing layer (6) is arranged between the drainage noise reduction layer (7) and the second modified asphalt layer (5).

3. A pavement structure according to claim 2, characterized in that: the self-adhesive anti-cracking mesh comprises a long-fiber polyester felt layer arranged in the middle and isolation layers arranged on two sides of the long-fiber polyester felt layer.

4. A pavement structure according to claim 3, characterized in that: and a surface hardening agent layer is sprayed on the drainage noise reduction layer (7), and the surface hardening agent layer is made of water-based polymer emulsified asphalt.

5. A pavement structure according to claim 4, characterized in that: the first modified asphalt layer (3) is a modified asphalt AC-20C layer and/or a modified asphalt concrete leveling layer, and the thickness of the modified asphalt AC-20C layer and the thickness of the modified asphalt concrete leveling layer are 6cm.

6. A pavement structure according to claim 5, characterized in that: the second modified asphalt layer (5) is a modified asphalt SMA-13 layer, and the thickness of the second modified asphalt layer (5) is 4cm.

7. A pavement structure according to claim 6, characterized in that: the drainage noise reduction layer (7) is an OGFC-13 high-viscosity modified asphalt drainage noise reduction pavement, and the thickness of the drainage noise reduction layer (7) is 4cm.