CN212316590U - Old cement concrete pavement additional-paving drainage pavement structure - Google Patents
Old cement concrete pavement additional-paving drainage pavement structure Download PDFInfo
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- CN212316590U CN212316590U CN201922115210.6U CN201922115210U CN212316590U CN 212316590 U CN212316590 U CN 212316590U CN 201922115210 U CN201922115210 U CN 201922115210U CN 212316590 U CN212316590 U CN 212316590U
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Abstract
The utility model discloses an old cement concrete pavement additional-paving drainage pavement structure, which comprises a drainage asphalt surface layer, a waterproof bonding layer, an anti-rutting layer, a bonding layer, a stress absorption layer, a double-layer bonding layer and an old cement concrete pavement from top to bottom in sequence; the drainage asphalt surface layer adopts a large-gap asphalt mixture PAC-13; the waterproof bonding layer adopts a synchronous asphalt macadam seal coat; the anti-rutting layer adopts AC-20 or AC-25 asphalt mixture; the stress absorbing layer adopts AC-8 or AC-10 asphalt mixture; the double-layer bonding layer adopts double-layer spread asphalt. The utility model discloses a structure not only can be discharged from road surface ponding rapidly, increases the skid resistance on rainy day driving visibility and road surface, also can effectually prevent old cement road surface and add the reflection crack on spreading the pitch layer, the life-span on the extension road surface that is showing.
Description
Technical Field
The utility model belongs to the technical field of road surface structure and construction, concretely relates to old cement concrete pavement adds spreads drainage shop front structure.
Background
In recent years, with the arrival of the "automotive age", the road traffic safety situation in China is increasingly severe. According to the investigation result of the highway rainy accidents in China, the rainy accident rate is about 8 times of that of the highway rainy weather in fine days, serious accidents such as chain rear-end collisions and water drift occur frequently, and the drainage asphalt pavement has the outstanding advantages of high skid resistance, low noise, water mist inhibition, water drift prevention, glare reduction and the like. In the southern high-temperature and rainy region, the annual average precipitation is more than 1300 mm, and the southern high-temperature and rainy region belongs to a humid region, so that the driving safety in rainy days is particularly remarkable.
With the development of economy and society, more and more cement pavements face the demand of changing white into black so as to improve the running quality of asphalt pavements, but the cement pavements additionally paved with asphalt layers face the problems of preventing and treating reflection cracks and the like. Therefore, the construction of the old cement concrete pavement additional-paving drainage pavement structure can not only quickly and effectively drain away the accumulated water on the pavement and further increase the traffic safety, but also can slow down the occurrence of reflection cracks, so the construction of the old cement pavement additional-paving drainage pavement structure is a great trend for the major repair or reconstruction of the cement concrete pavement.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides an old cement concrete pavement adds spreads drainage shop front structure, the utility model relates to a scientific and reasonable combines waterproof tie coat, anti rut layer, stress absorbing layer and double-deck tie coat as surface functional layer through adopting the bituminous mixture of the big porosity of open-graded distribution, possesses good rainwater drainage ability, crack resistance and durability.
The technical scheme of the utility model:
the pavement structure of the running road sequentially comprises a drainage asphalt surface layer, a waterproof bonding layer, an anti-rutting layer, a bonding layer, a stress absorption layer, a double-layer bonding layer and an old cement concrete pavement from top to bottom; the drainage asphalt surface layer adopts a large-gap asphalt mixture PAC-13; the waterproof bonding layer adopts a synchronous asphalt macadam seal coat; the anti-rutting layer adopts AC-20 or AC-25 asphalt mixture; the stress absorbing layer adopts AC-8 or AC-10 asphalt mixture; the double-layer bonding layer adopts double-layer spread asphalt.
Furthermore, the void ratio of the drainage asphalt surface layer is 17% -23%, and the pavement water permeability coefficient can be larger than 5000ml/min as a result of plastic package method measurement.
Furthermore, the asphalt in the waterproof bonding layer adopts SBS modified asphalt or rubber asphalt.
Furthermore, the spreading amount of the asphalt in the waterproof bonding layer is 1.5-1.8 kg/square meter.
Furthermore, the gravel in the waterproof bonding layer is pre-wrapped with asphalt gravel.
Furthermore, the particle size of the broken stone in the waterproof bonding layer is 3-5 mm; the content of the pre-wrapped asphalt-attached macadam asphalt is 0.3-0.5%.
Furthermore, the designed void ratio of the asphalt mixture in the stress absorption layer is 2.5-3.5%, the saturation of the asphalt mixture is more than 80%, and the road surface water permeability coefficient is less than 50 ml/min.
Furthermore, the upper layer of the double-layer bonding layer is SBS modified asphalt, and the lower layer is SBS modified emulsified asphalt.
Furthermore, the amount of the SBS modified asphalt in the upper layer is 1.0 kg/square meter, and the amount of the SBS modified emulsified asphalt in the lower layer is 0.5 kg/square meter.
The utility model has the advantages that: by adopting the open-graded high-porosity asphalt mixture as the upper surface layer of the additional layer of the old cement concrete pavement and combining with the waterproof bonding layer, the anti-rutting layer, the stress absorbing layer and the double-layer bonding layer, the accumulated water on the surface of the pavement can be rapidly discharged, the visibility of the running in rainy days and the skid resistance of the pavement are improved, the reflection cracks of the additional layer of the asphalt of the old cement pavement can be effectively prevented, and the service life of the pavement is remarkably prolonged.
Drawings
FIG. 1 is a schematic structural view of an old cement concrete pavement additionally paved and drained pavement structure of the utility model;
names and sequence numbers in the figure:
the asphalt pavement comprises a drainage asphalt surface layer 1, a waterproof bonding layer 2, an anti-rutting layer 3, a bonding layer 4, a stress absorption layer 5, a double-layer bonding layer 6 and an old cement concrete pavement 7.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example 1:
as shown in fig. 1, a drainage pavement structure for additionally paving an old cement concrete pavement is provided, and the pavement structure of a carriageway sequentially comprises a drainage asphalt surface layer 1, a waterproof bonding layer 2, an anti-rutting layer 3, a bonding layer 4, a stress absorption layer 5, a double-layer bonding layer 6 and an old cement concrete pavement 7 from top to bottom; the drainage asphalt surface layer 1 adopts a large-gap asphalt mixture PAC-13; the waterproof bonding layer 2 adopts a synchronous asphalt macadam seal coat; the anti-rutting layer 3 is made of AC-20 asphalt mixture; the stress absorbing layer 5 adopts an AC-8 asphalt mixture; the double-layer bonding layer 6 adopts double-layer spread asphalt.
The void ratio of the drainage asphalt surface layer 1 is 17%, and the pavement water permeability coefficient is greater than 5000ml/min, which is a measurement result of a plastic package method.
The asphalt in the waterproof bonding layer 2 is SBS modified asphalt.
The asphalt distribution amount in the waterproof bonding layer 2 is 1.5 kg/square meter.
The gravel in the waterproof bonding layer 2 is pre-wrapped asphalt gravel.
The particle size of the broken stone in the waterproof bonding layer 2 is 3 mm; the content of the pre-wrapped asphalt-attached macadam asphalt is 0.3 percent.
The designed void ratio of the asphalt mixture in the stress absorption layer 5 is 2.5%, the saturation of the asphalt mixture is more than 80%, and the road surface water permeability coefficient is less than 50 ml/min.
The upper layer of the double-layer bonding layer 6 is SBS modified asphalt, and the lower layer is SBS modified emulsified asphalt.
The amount of the SBS modified asphalt in the upper layer is 1.0 kg/square meter, and the amount of the SBS modified emulsified asphalt in the lower layer is 0.5 kg/square meter.
Example 2:
as shown in fig. 1, the present embodiment is different from embodiment 1 in that:
the void ratio of the drainage asphalt surface layer 1 is 23%, and the pavement water permeability coefficient is greater than 5000ml/min, which is a measurement result of a plastic package method.
The asphalt in the waterproof bonding layer 2 is rubber asphalt.
The asphalt distribution amount in the waterproof bonding layer 2 is 1.8 kg/square meter.
The particle size of the broken stone in the waterproof bonding layer 2 is 5 mm; the content of the pre-wrapped asphalt-attached macadam asphalt is 0.5 percent.
The stress absorbing layer 5 adopts AC-10 asphalt mixture.
The designed void ratio of the asphalt mixture in the stress absorbing layer 5 is 3.5%.
It should be noted that the above-mentioned embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (9)
1. A drainage pavement structure for additionally paving an old cement concrete pavement is characterized in that a pavement structure of a roadway comprises a drainage asphalt surface layer, a waterproof bonding layer, an anti-rutting layer, a bonding layer, a stress absorption layer, a double-layer bonding layer and the old cement concrete pavement from top to bottom in sequence;
the drainage asphalt surface layer adopts a large-gap asphalt mixture PAC-13;
the waterproof bonding layer adopts a synchronous asphalt macadam seal coat;
the anti-rutting layer is made of AC-20 or AC-25 asphalt mixture;
the stress absorption layer adopts AC-8 or AC-10 asphalt mixture;
the double-layer bonding layer adopts double-layer spread asphalt.
2. The old cement concrete pavement overlaying drainage pavement structure as claimed in claim 1, wherein the void ratio of the drainage asphalt pavement layer is 17% -23%.
3. The old cement concrete pavement overlaying drainage pavement structure as claimed in claim 1, wherein asphalt in the waterproof bonding layer is SBS modified asphalt or rubber asphalt.
4. A structure of old cement concrete pavement plus paving drainage pavement according to claim 3, characterized in that the asphalt distribution amount in the waterproof bonding layer is 1.5-1.8 kg/m.
5. The old cement concrete pavement plus-laying drainage pavement structure as claimed in claim 1, wherein the macadam in the waterproof bonding layer is pre-wrapped with asphalt macadam.
6. A structure of old cement concrete pavement plus paving drainage pavement according to claim 5, characterized in that the gravel particle size in the waterproof bonding layer is 3-5 mm.
7. The old cement concrete pavement overlaying drainage pavement structure of claim 1, wherein the designed void ratio of the asphalt mixture in the stress absorption layer is 2.5% -3.5%.
8. The old cement concrete pavement additionally-paved drainage pavement structure as claimed in claim 1, wherein the upper layer of the double-layer bonding layer is SBS modified asphalt, and the lower layer is SBS modified emulsified asphalt.
9. The old cement concrete pavement additionally-paved drainage pavement structure according to claim 8, wherein the SBS modified asphalt at the upper layer is distributed in an amount of 1.0 kg/square meter, and the SBS modified emulsified asphalt at the lower layer is distributed in an amount of 0.5 kg/square meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922115210.6U CN212316590U (en) | 2019-11-29 | 2019-11-29 | Old cement concrete pavement additional-paving drainage pavement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922115210.6U CN212316590U (en) | 2019-11-29 | 2019-11-29 | Old cement concrete pavement additional-paving drainage pavement structure |
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| Publication Number | Publication Date |
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| CN212316590U true CN212316590U (en) | 2021-01-08 |
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| CN201922115210.6U Active CN212316590U (en) | 2019-11-29 | 2019-11-29 | Old cement concrete pavement additional-paving drainage pavement structure |
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| CN (1) | CN212316590U (en) |
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