CN210712411U - Heat reflection type cooling asphalt pavement structure - Google Patents

Heat reflection type cooling asphalt pavement structure Download PDF

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Publication number
CN210712411U
CN210712411U CN201920567152.8U CN201920567152U CN210712411U CN 210712411 U CN210712411 U CN 210712411U CN 201920567152 U CN201920567152 U CN 201920567152U CN 210712411 U CN210712411 U CN 210712411U
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asphalt
layer
heat reflection
thickness
modified
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CN201920567152.8U
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钱国平
金娇
韦慧
刘佩
龚湘兵
于华南
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Changsha University of Science and Technology
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Changsha University of Science and Technology
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Abstract

The utility model discloses a heat reflection-type cooling bituminous paving structure, road surface structure include heat reflection coating, heat resistance formula bituminous mixture upper surface layer, heat resistance formula pitch adhesive linkage, well grain formula bituminous mixture middle surface layer, modified emulsified asphalt adhesive linkage, close gradation modified asphalt mixture lower surface layer, emulsified asphalt permeable coating, the rubble basic unit is stabilized to pitch, waterproof tie coat and waterproof subbase layer from top to bottom, be equipped with vertical strengthening rib between well grain formula bituminous mixture middle surface layer and the rubble basic unit is stabilized to pitch, and the strengthening rib overcoat has cup jointed the reinforced rib board to form grid column structure with the strengthening rib. The thermal resistance type asphalt bonding layer is a modified asphalt bonding layer doped with ceramic sand, and the thickness of the thermal resistance type asphalt bonding layer is 0.1-0.15 cm. The utility model discloses a heat reflection-type cooling bituminous paving structure realizes bituminous paving's cooling effect when strengthening the road performance, improves road surface strength and driving safety.

Description

Heat reflection type cooling asphalt pavement structure
Technical Field
The utility model belongs to the road engineering field, concretely relates to heat reflection-type cooling bituminous paving structure.
Background
In recent years, the highway construction in China has been developed rapidly, and the total mileage of the highway in China reaches 457 kilometers by the end of 2015 years according to the display of related data, wherein the high-speed mileage reaches 12.3 kilometers and is the first place in the world. The urban road construction in China also develops rapidly, and the urban road length is over 35 kilometers by the end of 2015. The road construction of China completes the development process of developed countries for more than half a century in a short time, and a national highway network with link of branches and trunks, reasonable layout and four-way and eight-reach is formed. The asphalt pavement has the advantages of flatness, firmness, stable driving, low noise, convenient maintenance and the like, and most of the main roads and urban roads in China adopt the asphalt pavement. However, in the running process of the road, due to the characteristic that the asphalt pavement is easy to absorb heat in summer, on one hand, the high-temperature instability of the pavement material is caused, so that a series of early damages occur to the pavement, such as: ruts, bumps, passes, etc., wherein ruts have become the most common form of failure in asphalt pavements, and the generation of ruts directly affects the safety and comfort of driving, resulting in poor lateral stability of the vehicle and thus causing traffic accidents.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model aims at providing a heat reflection type cooling bituminous pavement structure realizes bituminous pavement'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 heat reflection-type cooling bituminous paving structure, road surface structure includes heat reflection coating, heat resistance formula bituminous mixture upper surface layer, heat resistance formula pitch adhesive linkage, well grain formula bituminous mixture middle surface layer, modified emulsified asphalt adhesive linkage, the modified asphalt mixture lower surface layer of close gradation, emulsified asphalt permeable course, the rubble basic unit is stabilized to pitch, waterproof bonding layer and impervious subbase, be equipped with vertical strengthening rib between well grain formula bituminous mixture middle surface layer and the rubble basic unit is stabilized to pitch, the strengthening rib cup joint has the reinforcing rib board to form grid column structure with the strengthening rib.
Preferably, the heat reflection coating is a structural thin layer formed by a heat reflection coating using a reaction resin as a substrate, and the thickness of the structural thin layer is 100-120 mu m.
Preferably, the upper surface layer of the thermal resistance type asphalt mixture is a thermal resistance type asphalt concrete layer which is graded and mixed with expanded perlite and/or ceramsite and has the maximum nominal particle size of 19mm, and the thickness of the thermal resistance type asphalt mixture is 3-4 cm.
Preferably, the thermal resistance type asphalt bonding layer is a modified asphalt bonding layer doped with ceramic sand, and the thickness of the thermal resistance type asphalt bonding layer is 0.1-0.15 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 reinforcing rib plates are polystyrene foam plastic plates and are distributed at equal intervals along the direction of the vertical reinforcing ribs.
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 heat reflection coating is coated on the surface of the upper surface of the thermal resistance type asphalt mixture, so that the solar heat reflection capability of the asphalt pavement is greatly improved; secondly, thermal resistance type asphalt such as expanded perlite or ceramsite replaces common asphalt to prepare a thermal resistance type asphalt mixture, modified asphalt mixed with ceramic sand replaces a thermal resistance type asphalt adhesive layer prepared from common emulsified asphalt, the thermal resistance effect is exerted together, and the heat transfer to the inside of the pavement can be reduced, so that the pavement cooling effect is realized, the expanded perlite or ceramsite has the effect of the modified asphalt, the performance of matrix asphalt is improved, and the high-temperature stability of the asphalt mixture is improved; moreover, through the grid-shaped structure formed by the vertical reinforcing ribs and the reinforcing rib plates, the asphalt layers and the base layer can be effectively prevented from being stripped or cracked, the bearing capacity and the road performance of the pavement structure are greatly improved, the occurrence of diseases of all layers of the pavement is avoided, and the fatigue resistance and the service life are prolonged.
Drawings
FIG. 1 is a schematic view of the structure of a heat-reflection type cooling asphalt pavement of the present invention;
the heat reflection coating comprises a heat reflection coating layer 1, a heat resistance type asphalt mixture upper surface layer 2, a heat resistance type asphalt bonding layer 3, a medium particle type asphalt mixture middle surface layer 4, a modified emulsified asphalt bonding layer 5, a dense grading modified asphalt mixture lower surface layer 6, an emulsified asphalt transparent layer 7, an asphalt stabilized macadam base layer 8, an asphalt stabilized macadam base layer 9, a waterproof bonding layer 10, a waterproof subbase layer 11, reinforcing ribs 12 and reinforcing rib plates.
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 heat reflection type cooling asphalt pavement structure comprises, from top to bottom, a heat reflection coating 1, a heat resistance type asphalt mixture upper surface layer 2, a heat resistance type asphalt adhesive layer 3, a medium particle type asphalt mixture middle surface layer 4, a modified emulsified asphalt adhesive layer 5, a dense grading modified asphalt mixture lower surface layer 6, an emulsified asphalt permeable layer 7, an asphalt stabilized macadam base layer 8, a waterproof adhesive layer 9 and a waterproof subbase layer 10 in sequence, wherein a vertical reinforcing rib 11 is arranged between the medium particle type asphalt mixture middle surface layer 4 and the asphalt stabilized macadam base layer 8, and a reinforcing rib plate 12 is sleeved outside the reinforcing rib 11 and forms a grid-shaped structure with the reinforcing rib 11.
The utility model is firstly coated on the heat reflection coating on the surface of the upper surface of the thermal resistance type asphalt mixture, thus greatly improving the solar heat reflection capability of the asphalt pavement; secondly, thermal resistance type asphalt such as expanded perlite or ceramsite replaces common asphalt to prepare a thermal resistance type asphalt mixture, modified asphalt mixed with ceramic sand replaces a thermal resistance type asphalt adhesive layer prepared from common emulsified asphalt, the thermal resistance effect is exerted together, and the heat transfer to the inside of the pavement can be reduced, so that the pavement cooling effect is realized, the expanded perlite or ceramsite has the effect of the modified asphalt, the performance of matrix asphalt is improved, and the high-temperature stability of the asphalt mixture is improved; moreover, through the grid-shaped structure formed by the vertical reinforcing ribs and the reinforcing rib plates, the asphalt layers and the base layer can be effectively prevented from being stripped or cracked, the bearing capacity and the road performance of the pavement structure are greatly improved, the occurrence of diseases of all layers of the pavement is avoided, and the fatigue resistance and the service life are prolonged.
The heat reflection coating 1 is a structural thin layer formed by a heat reflection coating with reaction resin as a matrix, and the thickness of the structural thin layer is 100-120 mu m.
The upper surface layer 2 of the thermal resistance type asphalt mixture is a thermal resistance type asphalt concrete layer which is graded and mixed with expanded perlite and/or ceramsite and has the nominal maximum grain size of 19mm, and the thickness of the thermal resistance type asphalt mixture is 3-4 cm.
The thermal resistance type asphalt bonding layer 3 is a modified asphalt bonding layer doped with ceramic sand, and the thickness is 0.1-0.15 cm.
The thickness of the modified emulsified asphalt adhesive layer 5 is 0.02 cm-0.05 cm.
The thickness of the emulsified asphalt permeable layer 7 is 0.05 cm-0.1 cm,
the surface layer 4 grade of the medium-particle asphalt mixture is AC-20C, and the thickness is 6-8 cm.
The 6-grade of the lower surface layer of the dense-grade modified asphalt mixture is AC-25C, and the thickness is 8-10 cm.
The thickness of the asphalt stabilized macadam foundation 8 is 15-20 cm.
The waterproof bonding layer 9 is a modified emulsified asphalt seal, a modified asphalt macadam seal or a waterproof geotextile.
The impermeable subbase layer 10 is cement stabilized aggregates or density-graded aggregates, and the thickness is 20-25 cm.
The reinforcing rib plates 12 are polystyrene foam plastic plates and are distributed at equal intervals along the direction of the vertical reinforcing ribs 11. The grid-shaped structure formed by the vertical reinforcing ribs and the reinforcing rib plates can effectively prevent the layers between the asphalt layers and the base layer from being stripped or cracked, greatly improves the bearing capacity and road performance of the pavement structure, avoids the occurrence of diseases of all layers of the pavement, and increases the fatigue resistance and the service life.
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 (8)

1. The utility model provides a heat reflection-type cooling bituminous paving structure which characterized in that: the pavement structure sequentially comprises a heat reflection coating (1), a heat resistance type asphalt mixture upper surface layer (2), a heat resistance type asphalt bonding layer (3), a medium particle type asphalt mixture middle surface layer (4), a modified emulsified asphalt bonding layer (5), a dense grading modified asphalt mixture lower surface layer (6), an emulsified asphalt permeable layer (7), an asphalt stabilized macadam base layer (8), a waterproof bonding layer (9) and a waterproof subbase layer (10) from top to bottom, wherein a vertical reinforcing rib (11) is arranged between the medium particle type asphalt mixture middle surface layer (4) and the asphalt stabilized macadam base layer (8), a reinforcing rib plate (12) is sleeved outside the reinforcing rib (11), and a grid-shaped structure is formed by the reinforcing rib (11);
the thermal resistance type asphalt bonding layer (3) is a modified asphalt bonding layer doped with ceramic sand, and the thickness is 0.1-0.15 cm.
2. The heat reflection type cooling asphalt pavement structure according to claim 1, characterized in that: the heat reflection coating (1) is a structural thin layer formed by a heat reflection coating with reaction resin as a matrix, and the thickness of the structural thin layer is 100-120 mu m.
3. The heat reflection type cooling asphalt pavement structure according to claim 1, characterized in that: the upper surface layer (2) of the thermal resistance type asphalt mixture is a thermal resistance type asphalt concrete layer which is graded and mixed with expanded perlite and/or ceramsite and has the maximum nominal particle size of 19mm, and the thickness of the thermal resistance type asphalt mixture is 3-4 cm.
4. The heat reflection type cooling asphalt pavement structure according to claim 1, characterized in that: the thickness of the modified emulsified asphalt adhesive layer (5) is 0.02 cm-0.05 cm; the thickness of the emulsified asphalt permeable layer (7) is 0.05 cm-0.1 cm.
5. The heat reflection type cooling asphalt pavement structure according to claim 1, characterized in that: the medium particle type asphalt mixture middle surface layer (4) is AC-20C in gradation and 6-8 cm in thickness.
6. The heat reflection type cooling asphalt pavement structure according to claim 1, characterized in that: the grading of the lower surface layer (6) of the dense-graded modified asphalt mixture is AC-25C, and the thickness is 8-10 cm.
7. The heat reflection type cooling asphalt pavement structure according to claim 1, characterized in that: the thickness of the asphalt stabilized macadam foundation (8) is 15-20 cm; the waterproof bonding layer (9) is a modified emulsified asphalt seal, a modified asphalt macadam seal or a waterproof geotextile; the impervious underlayer (10) is cement stabilized aggregates or density-graded aggregates, and the thickness is 20-25 cm.
8. The heat reflection type cooling asphalt pavement structure according to claim 1, characterized in that: the reinforcing rib plates (12) are polystyrene foam plastic plates and are distributed at equal intervals along the direction of the vertical reinforcing ribs (11).
CN201920567152.8U 2019-04-24 2019-04-24 Heat reflection type cooling asphalt pavement structure Active CN210712411U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920567152.8U CN210712411U (en) 2019-04-24 2019-04-24 Heat reflection type cooling asphalt pavement structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920567152.8U CN210712411U (en) 2019-04-24 2019-04-24 Heat reflection type cooling asphalt pavement structure

Publications (1)

Publication Number Publication Date
CN210712411U true CN210712411U (en) 2020-06-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920567152.8U Active CN210712411U (en) 2019-04-24 2019-04-24 Heat reflection type cooling asphalt pavement structure

Country Status (1)

Country Link
CN (1) CN210712411U (en)

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