Asphalt concrete composite pavement transformed from cement pavement

Abstract

The utility model provides an asphalt concrete composite pavement transformed by utilizing a cement pavement, which relates to the technical field of pavement transformation and comprises a cement layer, a galling layer is arranged on the top surface of the cement layer, a plurality of blind holes are formed in the top surface of the cement layer, rivets are inserted into the blind holes, and the rivets are connected with the cement layer. The top ends of the rivets are fixedly connected through thin steel bars. According to the utility model, the surface layer of the cement layer is roughened by a milling machine to form the roughened layer, then a plurality of blind holes are sequentially drilled in the surface of the cement layer in the longitudinal and transverse directions by using a drilling machine, the rivets are inserted into the blind holes, and the rivets are connected by matching the fine steel bars with the iron wire ties, so that the tensile property of the cement layer is improved; and the risk of cracking of the cement layer is reduced, so that the overall stability and durability of the pavement are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of road surface reconstruction, in particular to an asphalt concrete composite road surface reconstructed by using cement road surface. Background Art

[0002] With the vigorous development and improvement of road construction in my country, there are more and more projects to transform the original cement concrete pavement into asphalt mixture pavement. Compared with cement pavement, asphalt pavement has better flatness and comfort, can reduce vehicle bumps during driving, and provide a more comfortable driving experience. Moreover, the surface of asphalt pavement is relatively soft and can better absorb the impact and vibration of the vehicle.

[0003] At present, when converting cement pavement into asphalt pavement, bonding layer and asphalt layer are usually laid directly on the cement pavement. However, due to factors such as long-term traffic load and temperature changes, the cement layer under the asphalt cracks, which causes the asphalt layer to crack as well, reducing the service life of the asphalt pavement. Therefore, in response to the above problems, we have proposed a new type of asphalt concrete composite pavement that uses cement pavement for transformation. Utility Model Content

[0004] The utility model mainly provides an asphalt concrete composite pavement transformed by cement pavement, which reduces the risk of cement layer cracking and increases the service life of the asphalt pavement.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an asphalt concrete composite pavement transformed by cement pavement, comprising a cement layer, the top surface of the cement layer is provided with a roughened layer, the top surface of the cement layer is provided with a plurality of blind holes, rivets are inserted inside the blind holes, and the top ends of the plurality of rivets are fixedly connected by thin steel bars.

[0006] Furthermore, the cracks in the cement layer are filled with sealing fillers, and the sealing fillers are asphalt caulking glue, which can effectively prevent moisture and debris from penetrating into the cracks, thereby extending the service life of the road.

[0007] Furthermore, a first bonding layer is laid on the top of the roughened layer. The first bonding layer is made of asphalt emulsion with a dosage of 0.8-1.0 kg / m 2 .

[0008] Furthermore, a steel mesh is laid on the top of the first bonding layer. The steel mesh is made of galvanized steel wire, which can effectively prevent corrosion of the steel mesh. The diameter of the steel mesh is 2-6 mm and the mesh size is 5-20 cm.

[0009] Furthermore, a crushed stone layer is laid on the top of the steel wire mesh, and a second bonding layer is laid on the top of the crushed stone layer. The crushed stone layer adopts ATB-30 type asphalt stabilized crushed stone with a thickness of 6-8 cm, and the second bonding layer adopts asphalt emulsion with a dosage of 0.8-1.0 kg / m 2 .

[0010] Furthermore, a lower layer is laid on the top of the second bonding layer, and the lower layer adopts AC-20 medium-grained asphalt mixture, and its thickness is set to 6-8 cm.

[0011] Furthermore, an upper layer is laid on the top of the lower layer, and the upper layer adopts AC-13 dense-graded fine-grained asphalt mixture, and its thickness is set to 4-5 cm.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, the surface of the cement layer is roughened by a milling machine to form a roughened layer, and then a drilling machine is used to drill a plurality of blind holes in the surface of the cement layer in the vertical and horizontal directions in sequence, and rivets are inserted into the blind holes, and the plurality of rivets are connected by thin steel bars and iron wire ties, so as to improve the tensile resistance of the cement layer, reduce the risk of cracking of the cement layer, and thus improve the overall stability and durability of the road surface.

[0014] 2. In the utility model, the crushed stone layer and the second bonding layer are mixed in the steel wire mesh, so that the firmness of the steel wire mesh is improved. The steel wire mesh can effectively suppress road cracking and has a good anti-cracking effect, thereby improving the durability of the road surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A stereoscopic diagram of an asphalt concrete composite pavement transformed by cement pavement is proposed for the utility model;

[0016] Figure 2 A cement structure schematic diagram of an asphalt concrete composite pavement transformed by cement pavement is proposed for the utility model;

[0017] Figure 3 The utility model proposes a partial structural schematic diagram of an asphalt concrete composite pavement transformed by cement pavement;

[0018] Figure 4 An exploded diagram of an asphalt concrete composite pavement transformed by cement pavement is proposed for the utility model.

[0019] Legend: 1. Cement layer; 11. Crack; 12. Sealing filler; 13. Roughened layer; 14. Blind hole; 2. Rivet; 21. Thin steel bar; 3. First bonding layer; 4. Wire mesh; 5. Gravel layer; 6. Second bonding layer; 7. Lower layer; 8. Upper layer. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] Embodiment 1, as Figure 1-Figure 4 As shown, the utility model provides a Figure 1 As shown, the asphalt concrete composite pavement transformed from a cement pavement in this embodiment includes a cement layer 1, a roughened layer 13 is provided on the top surface of the cement layer 1, a plurality of blind holes 14 are opened on the top surface of the cement layer 1, rivets 2 are inserted inside the blind holes 14, and the top ends of the plurality of rivets 2 are fixedly connected by thin steel bars 21.

[0023] like Figure 2 As shown, the cracks 11 of the cement layer 1 are filled with sealing fillers 12. The sealing fillers 12 are made of asphalt caulking glue, which can effectively prevent moisture and debris from penetrating into the cracks, thereby extending the service life of the road.

[0024] like Figure 2 As shown, a first bonding layer 3 is laid on the top of the roughened layer 13. The first bonding layer 3 is made of asphalt emulsion with a dosage of 0.8-1.0 kg / m 2 .

[0025] like Figure 4 As shown, a steel mesh 4 is laid on the top of the first bonding layer 3. The steel mesh 4 is made of galvanized steel wire, which can effectively prevent the steel mesh 4 from corrosion. The diameter of the steel mesh 4 is 2-6 mm, and the mesh size is 5-20 cm.

[0026] like Figure 4 As shown, a crushed stone layer 5 is laid on the top of the steel wire mesh 4, and a second bonding layer 6 is laid on the top of the crushed stone layer 5. The crushed stone layer 5 is made of ATB-30 type asphalt stabilized crushed stone with a thickness of 6-8 cm. The second bonding layer 6 is made of asphalt emulsion with a dosage of 0.8-1.0 kg / m 2 .

[0027] like Figure 4 As shown, a lower layer 7 is laid on the top of the second bonding layer 6. The lower layer 7 is made of AC-20 medium-grained asphalt mixture, and its thickness is set to 6-8 cm.

[0028] like Figure 4 As shown, an upper layer 8 is laid on the top of the lower layer 7. The upper layer 8 is made of AC-13 dense-graded fine-grained asphalt mixture, and its thickness is set to 4-5 cm.

[0029] Working principle: First, when there are cracks 11 on the road surface, use sealing filler 12 to fill and repair the cracks 11 to avoid hollowing during the road surface reconstruction process. Use a milling machine to roughen the surface of the cement layer 1 to form a roughened layer 13. Then use a drill to drill a number of blind holes 14 in the vertical and horizontal directions on the surface of the cement layer 1, and insert rivets 2 into the blind holes 14. Use thin steel bars 21 and wire ties to connect the rivets 2 to improve the tensile strength of the cement layer 1 and reduce the risk of cracking, thereby improving the stability and durability of the road surface. By laying the first bonding layer 3 on the surface of the roughened layer 13, and then The wire mesh 4 is laid on the first bonding layer 3, and the roughened layer 13 can improve the adhesion between the first bonding layer 3 and the wire mesh 4, thereby reducing the possibility of interlayer slippage and peeling. Then, a crushed stone layer 5 and a second bonding layer 6 are laid on the surface of the wire mesh 4 in turn. By mixing the crushed stone layer 5 and the second bonding layer 6 in the wire mesh 4, the firmness of the wire mesh 4 can be further improved. Finally, the lower layer 7 and the upper layer 8 are laid in turn, and the road surface is flattened by the upper layer 8 with a roller to complete the road surface reconstruction. The wire mesh 4 can effectively suppress road surface cracking, and has a good anti-cracking effect, thereby improving the durability of the road surface.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An asphalt concrete composite pavement transformed from a cement pavement, comprising a cement layer (1), characterized in that: The top surface of the cement layer (1) is provided with a roughened layer (13), the top surface of the cement layer (1) is provided with a plurality of blind holes (14), rivets (2) are inserted into the blind holes (14), and the top ends of the plurality of rivets (2) are fixedly connected by thin steel bars (21).

2. The asphalt concrete composite pavement transformed by cement pavement according to claim 1, characterized in that: The cracks (11) of the cement layer (1) are filled with sealing fillers (12).

3. The asphalt concrete composite pavement transformed by cement pavement according to claim 1, characterized in that: A first adhesive layer (3) is laid on the top of the roughened layer (13).

4. The asphalt concrete composite pavement transformed by cement pavement according to claim 3 is characterized in that: A steel wire mesh (4) is laid on the top of the first adhesive layer (3).

5. The asphalt concrete composite pavement transformed by cement pavement according to claim 4, characterized in that: A crushed stone layer (5) is laid on the top of the steel wire mesh (4), and a second bonding layer (6) is laid on the top of the crushed stone layer (5).

6. The asphalt concrete composite pavement transformed by cement pavement according to claim 5, characterized in that: A lower layer (7) is laid on top of the second adhesive layer (6).

7. The asphalt concrete composite pavement transformed by cement pavement according to claim 6, characterized in that: An upper layer (8) is laid on top of the lower layer (7).

Images