CN210975410U - Phase transition cooling bituminous paving structure - Google Patents
Phase transition cooling bituminous paving structure Download PDFInfo
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- CN210975410U CN210975410U CN201920581385.3U CN201920581385U CN210975410U CN 210975410 U CN210975410 U CN 210975410U CN 201920581385 U CN201920581385 U CN 201920581385U CN 210975410 U CN210975410 U CN 210975410U
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Abstract
The utility model discloses a phase transition cooling bituminous paving structure, road surface structure include in proper order from top to bottom heat conduction formula bituminous mixture upper strata, modified emulsified asphalt adhesive linkage, well grain formula bituminous mixture surface course, modified emulsified asphalt adhesive linkage, close gradation modified asphalt mixture lower surface course, emulsified asphalt permeable course, the rubble basic unit is stabilized to pitch, waterproof bonding coat and waterproof subbase, be equipped with vertical steel pipe between well grain formula bituminous mixture surface course and the rubble basic unit is stabilized to pitch, the encapsulation has phase change material in the steel pipe, and the steel pipe has cup jointed the reinforced rib board to form grid column structure with the steel pipe. The utility model discloses a phase transition cooling bituminous paving structure realizes bituminous paving's cooling effect when strengthening the road performance, improves road surface strength and driving safety.
Description
Technical Field
The utility model belongs to the road engineering field, concretely relates to phase transition cooling bituminous paving structure.
Background
The asphalt concrete is a black material, has strong heat absorption capacity and is easy to cause the temperature rise of the pavement. The high temperature of the pavement can bring serious influence on the durability, traffic safety and ecological environment of the pavement, such as accelerated asphalt aging, aggravated pavement high-temperature rutting, induced traffic accidents, aggravated urban heat island effect and the like. With the global warming and the wide application of asphalt pavements, the pavement high temperature problem is more prominent.
In the previous researches, people usually adopt one of phase-change temperature-control asphalt concrete or permeable asphalt concrete to reduce the temperature of a road surface, but problems also occur in the using process that ⑴ phase-change materials are added too little to have an unobvious cooling effect, the addition too much influences the service performance of the asphalt concrete, in order to ensure the road performance of the asphalt concrete, the cooling function of the phase-change temperature-control asphalt concrete is greatly limited, ⑵ permeable asphalt concrete has relatively high porosity, but the bearing capacity of the materials is limited.
Therefore, it is an urgent need to solve the problem of providing an asphalt pavement structure with high pavement strength and capable of synchronously realizing the cooling effect.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model aims at providing a phase transition cooling bituminous paving structure realizes bituminous paving's cooling effect when strengthening the road performance, improves road surface intensity and driving safety.
In order to realize the technical purpose, the utility model adopts the following technical scheme:
the utility model provides a phase transition cooling bituminous paving structure, road surface structure include heat conduction formula bituminous mixture upper surface layer, modified emulsified asphalt adhesive layer, well grain formula bituminous mixture middle surface layer, modified emulsified asphalt adhesive layer, the modified asphalt mixture lower surface layer of close gradation, emulsified asphalt permeable coating, the rubble basic unit is stabilized to pitch, waterproof tie coat and impervious subbase, be equipped with vertical steel pipe between well grain formula bituminous mixture middle surface layer and the rubble basic unit is stabilized to pitch, the encapsulation has phase change material in the steel pipe, and the steel pipe cup joints has the reinforcing rib board to form grid column structure with the steel pipe.
Preferably, the upper surface layer of the heat-conducting asphalt mixture is an asphalt mixture structure layer doped with non-metal heat-conducting filler, such as graphite, carbon fiber and the like, and the thickness of the asphalt mixture structure layer is 3-4 cm.
Preferably, the thickness of the modified emulsified asphalt adhesive layer is 0.02 cm-0.05 cm.
Preferably, the thickness of the emulsified asphalt permeable layer is 0.05 cm-0.1 cm,
preferably, the surface layer gradation of the medium-particle asphalt mixture is AC-20C, and the thickness is 6-8 cm.
Preferably, the gradation of the lower surface layer of the dense-graded modified asphalt mixture is AC-25C, and the thickness is 8-10 cm.
Preferably, the thickness of the asphalt stabilized macadam foundation is 15-20 cm.
Preferably, the waterproof bonding layer is a modified emulsified asphalt seal, a modified asphalt macadam seal or a waterproof geotextile.
Preferably, the impermeable underlayer is cement stable granules or density-graded granules, and the thickness is 20-25 cm.
Preferably, the steel pipe is a threaded pipe, the outer diameter of the steel pipe is 20-22 mm, and the wall thickness of the steel pipe is 3-4 mm.
Preferably, the reinforcing rib plates are polystyrene foam plastic plates and are distributed at equal intervals along the direction of the vertical steel pipe.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a each layer material performance characteristics of road surface structure and structural grouping form, it can very big promotion road surface structure bearing capacity and road performance when realizing the road surface cooling effect, has avoided the emergence of each layer disease in road surface. The utility model discloses a set up the vertical steel pipe that is packaged with phase change material, form grid column structure with the reinforcing floor, the phase change material of vertical steel pipe internal packaging can be used to absorb the heat that the storage heat conduction formula bituminous mixture upper surface layer transmitted and be used for reducing road surface temperature, vertical steel pipe and the grid column structure that the reinforcing floor formed can regard as "strengthening rib" again simultaneously, when realizing the road surface cooling, can effectively prevent between each pitch layer, peel off or the fracture between the layer between pitch layer and the basic unit, very big promotion road surface structure bearing capacity and road performance, the emergence of each layer disease in road surface has been avoided, fatigue resistance ability and life have been increased.
Drawings
FIG. 1 is a schematic view of the phase-change cooling asphalt pavement structure of the present invention;
the heat-conducting asphalt mixture comprises a heat-conducting asphalt mixture upper surface layer, a modified emulsified asphalt adhesive layer, a medium-grain asphalt mixture middle surface layer, a dense-graded modified asphalt mixture lower surface layer, an emulsified asphalt permeable layer, an asphalt stabilized macadam base layer, a waterproof bonding layer, a waterproof underlayer, a steel pipe, a reinforcing rib plate and a reinforcing rib plate, wherein the heat-conducting asphalt mixture upper surface layer is 2, the modified emulsified asphalt adhesive layer is 3, the medium-grain asphalt mixture middle surface layer is 5, the dense-graded modified asphalt mixture lower surface layer.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be noted that these examples are only for illustrating the present invention, and are not intended to limit the scope of the present invention. The technical staff is according to the utility model discloses the improvement and the adjustment made still belong to in the practical application the utility model discloses a protection scope.
As shown in fig. 1, a phase-change cooling asphalt pavement structure sequentially comprises a heat-conducting asphalt mixture upper surface layer 1, a modified emulsified asphalt bonding layer 2, a medium-sized asphalt mixture middle surface layer 3, a modified emulsified asphalt bonding layer 2, a dense-graded modified asphalt mixture lower surface layer 5, an emulsified asphalt permeable layer 6, an asphalt stabilized macadam base layer 7, a waterproof bonding layer 8 and a waterproof subbase layer 9 from top to bottom, wherein a vertical steel pipe 10 is arranged between the medium-sized asphalt mixture middle surface layer 3 and the asphalt stabilized macadam base layer 7, a phase-change material is sealed in the steel pipe 10, a reinforcing rib plate 11 is sleeved outside the steel pipe 10, and the steel pipe 10 and the reinforcing rib plate 11 form a grid-shaped structure.
The utility model discloses a set up the vertical steel pipe that is packaged with phase change material, form grid column structure with the reinforcing floor, the phase change material of vertical steel pipe internal packaging can be used to absorb the heat that the storage heat conduction formula bituminous mixture upper surface layer transmitted and be used for reducing road surface temperature, vertical steel pipe and the grid column structure that the reinforcing floor formed can regard as "strengthening rib" again simultaneously, when realizing the road surface cooling, can effectively prevent between each pitch layer, peel off or the fracture between the layer between pitch layer and the basic unit, very big promotion road surface structure bearing capacity and road performance, the emergence of each layer disease in road surface has been avoided, fatigue resistance ability and life have been increased.
The heat-conducting asphalt mixture upper surface layer 1 is an asphalt mixture structure layer doped with nonmetal heat-conducting fillers, such as graphite, carbon fibers and the like, the thickness is 3-4 cm, asphalt concrete is a poor heat conductor, the heat-conducting performance of the asphalt mixture layer can be improved by doping the heat-conducting fillers, the heat on the surface of a road is downwards transferred through the heat-conducting asphalt mixture upper surface layer, the heat is absorbed and stored by phase-change materials packaged in a vertical steel pipe so as to reduce the temperature of the road surface, and the phase-change materials can be materials commonly used in the field, such as organic matters with the phase-change temperature of 30-70 ℃ such as paraffin, polyethylene glycol.
The thickness of the modified emulsified asphalt adhesive layer 2 is 0.02 cm-0.05 cm.
The thickness of the emulsified asphalt permeable layer 6 is 0.05 cm-0.1 cm,
the 3-grade composition of the surface layer of the medium-particle asphalt mixture is AC-20C, and the thickness of the medium-particle asphalt mixture is 6-8 cm.
The 5-grade lower surface layer of the dense-grade modified asphalt mixture is AC-25C, and the thickness of the dense-grade modified asphalt mixture is 8-10 cm.
The thickness of the asphalt stabilized macadam foundation 7 is 15-20 cm.
The waterproof bonding layer 8 is a modified emulsified asphalt seal, a modified asphalt macadam seal or a waterproof geotextile.
The impermeable subbase layer 9 is cement stable granules or density-graded granules, and the thickness is 20-25 cm.
The steel pipe 10 is a threaded pipe, the outer diameter of the threaded pipe is 20-22 mm, the wall thickness of the threaded pipe is 3-4 mm, the threaded pipe serves as a reinforcing rib, the binding force between the steel pipe and each structural layer can be further improved, and therefore the bearing capacity and the road performance of the road surface structure are further improved.
The reinforcing rib plates 11 are polystyrene foam plastic plates and are distributed at equal intervals along the direction of the vertical steel pipe 10, the grid-shaped structures formed by the vertical steel pipe and the reinforcing rib plates are used as reinforcing ribs, the separation or cracking between the asphalt layers and the base layer can be effectively prevented, the bearing capacity and the road performance of the road surface structure are greatly improved, the occurrence of diseases of all layers of the road surface is avoided, the fatigue resistance is improved, and the service life is prolonged.
The utility model discloses a each layer material performance characteristics of road surface structure and structural grouping form, it can very big promotion road surface structure bearing capacity and road performance when realizing the road surface cooling effect, has avoided the emergence of each layer disease in road surface.
Claims (10)
1. The utility model provides a phase transition cooling bituminous paving structure which characterized in that: the pavement structure sequentially comprises a heat-conducting asphalt mixture upper surface layer (1), a modified emulsified asphalt bonding layer (2), a medium-sized asphalt mixture middle surface layer (3), a modified emulsified asphalt bonding layer (2), a dense-graded modified asphalt mixture lower surface layer (5), an emulsified asphalt permeable layer (6), an asphalt stabilized macadam base layer (7), a waterproof bonding layer (8) and a waterproof subbase layer (9) from top to bottom, wherein a vertical steel pipe (10) is arranged between the medium-sized asphalt mixture middle surface layer (3) and the asphalt stabilized macadam base layer (7), a phase-change material is packaged in the steel pipe (10), a reinforcing rib plate (11) is sleeved outside the steel pipe (10), and a grid-shaped structure is formed by the steel pipe (10).
2. The phase change cooling asphalt pavement structure according to claim 1, characterized in that: the heat-conducting asphalt mixture upper surface layer (1) is an asphalt mixture structure layer doped with a non-metal heat-conducting filler, and the thickness is 3-4 cm.
3. The phase change cooling asphalt pavement structure according to claim 1, characterized in that: the thickness of the modified emulsified asphalt adhesive layer (2) is 0.02 cm-0.05 cm; the thickness of the emulsified asphalt permeable layer (6) is 0.05 cm-0.1 cm.
4. The phase change cooling asphalt pavement structure according to claim 1, characterized in that: the surface layer (3) of the medium-particle asphalt mixture is AC-20C in gradation and 6-8 cm in thickness.
5. The phase change cooling asphalt pavement structure according to claim 1, characterized in that: the grading of the lower surface layer (5) of the dense-graded modified asphalt mixture is AC-25C, and the thickness is 8-10 cm.
6. The phase change cooling asphalt pavement structure according to claim 1, characterized in that: the thickness of the asphalt stabilized macadam foundation (7) is 15-20 cm.
7. The phase change cooling asphalt pavement structure according to claim 1, characterized in that: the waterproof bonding layer (8) is a modified emulsified asphalt seal, a modified asphalt macadam seal or a waterproof geotextile.
8. The phase change cooling asphalt pavement structure according to claim 1, characterized in that: the impervious underlayer (9) is cement stabilized aggregates or density-graded aggregates, and the thickness is 20-25 cm.
9. The phase change cooling asphalt pavement structure according to claim 1, characterized in that: the steel pipe (10) is a threaded pipe, the outer diameter is 20-22 mm, and the wall thickness is 3-4 mm.
10. The phase change cooling asphalt pavement structure according to claim 1, characterized in that: the reinforcing rib plates (11) are polystyrene foam plastic plates and are distributed at equal intervals along the direction of the vertical steel pipe (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920581385.3U CN210975410U (en) | 2019-04-26 | 2019-04-26 | Phase transition cooling bituminous paving structure |
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| CN201920581385.3U CN210975410U (en) | 2019-04-26 | 2019-04-26 | Phase transition cooling bituminous paving structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160211A (en) * | 2020-09-29 | 2021-01-01 | 四川公路桥梁建设集团有限公司 | Asphalt pavement structure suitable for high-temperature rainy area and construction method thereof |
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2019
- 2019-04-26 CN CN201920581385.3U patent/CN210975410U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160211A (en) * | 2020-09-29 | 2021-01-01 | 四川公路桥梁建设集团有限公司 | Asphalt pavement structure suitable for high-temperature rainy area and construction method thereof |
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