CN219731509U - Long-life asphalt pavement structure based on microparticle activated natural asphalt high-modulus mixture - Google Patents
Long-life asphalt pavement structure based on microparticle activated natural asphalt high-modulus mixture Download PDFInfo
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- CN219731509U CN219731509U CN202321307842.2U CN202321307842U CN219731509U CN 219731509 U CN219731509 U CN 219731509U CN 202321307842 U CN202321307842 U CN 202321307842U CN 219731509 U CN219731509 U CN 219731509U
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- 239000010426 asphalt Substances 0.000 title claims abstract description 86
- 239000000203 mixture Substances 0.000 title claims abstract description 29
- 239000011859 microparticle Substances 0.000 title abstract description 18
- 239000011384 asphalt concrete Substances 0.000 claims abstract description 80
- 239000004575 stone Substances 0.000 claims abstract description 19
- 239000011230 binding agent Substances 0.000 claims description 3
- 239000004567 concrete Substances 0.000 claims 7
- 150000001875 compounds Chemical class 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 239000006185 dispersion Substances 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 82
- 239000002344 surface layer Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Road Paving Structures (AREA)
Abstract
The utility model discloses a long-life asphalt pavement structure based on a microparticle activated natural asphalt high-modulus mixture, which comprises a graded broken stone subbase layer, an EME-20 asphalt concrete base layer, an EME-16 asphalt concrete lower layer and an SMA-13 asphalt concrete upper layer which are paved from bottom to top, wherein the EME-20 asphalt concrete base layer and the EME-16 asphalt concrete lower layer are both microparticle activated natural asphalt binding layers. According to the utility model, the particle activated natural asphalt binding material layer is adopted as the base layer and the lower layer, and the high modulus, the good load transmission and dispersion capability, the excellent high-temperature stability, the excellent water stability and the excellent fatigue resistance are utilized, so that the service performance of the asphalt pavement is improved, the service life of the asphalt pavement is prolonged, the thickness of the asphalt pavement is obviously reduced, the structural maintenance and repair times of the asphalt pavement in the whole service life period are greatly reduced, and the engineering period cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of asphalt pavement engineering, and particularly relates to a long-service-life asphalt pavement structure based on a microparticle activated natural asphalt high-modulus mixture.
Background
At present, the expressway asphalt pavement has the problems of short design life, high social and natural resource consumption, high operation and maintenance cost and the like, and is difficult to meet the requirements of full life cycle technical economic optimization, so that the development of the long-life pavement is the most effective way for solving the problems. Studies show that the stiffness modulus of the asphalt mixture of the structural layer is increased by 2 times, the service life of the asphalt pavement can be prolonged by 2-5 times (high modulus asphalt EME), and the thickness of the asphalt base layer is increased by 10 percent, so that the service life of the asphalt pavement can be doubled (full thickness pavement structure). Based on the idea, a new asphalt pavement structural form is formed by introducing a high-modulus asphalt mixture technology, so that the service performance of the asphalt pavement is improved, and the service life of the asphalt pavement is effectively prolonged.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a long-service-life asphalt pavement structure based on a microparticle activated natural asphalt high-modulus mixture aiming at the defects of the prior art. The asphalt pavement structure adopts the particle activated natural asphalt (HMB-W) binding material layer as a base layer and a lower layer, and utilizes the higher modulus, good load transmission and dispersion capacity, excellent high-temperature stability, water stability and fatigue resistance of the particle activated natural asphalt binding material layer to effectively improve the service performance of the asphalt pavement, prolong the service life of the asphalt pavement, obviously reduce the thickness of the asphalt pavement and reduce the total life cycle cost of asphalt pavement engineering.
In order to solve the technical problems, the utility model adopts the following technical scheme: the long-life asphalt pavement structure based on the microparticle activated natural asphalt high-modulus mixture is characterized by comprising a graded broken stone subbase layer, an EME-20 asphalt concrete base layer, an EME-16 asphalt concrete lower layer and an SMA-13 asphalt concrete upper layer which are paved from bottom to top, wherein the EME-20 asphalt concrete base layer and the EME-16 asphalt concrete lower layer are both microparticle activated natural asphalt binder layers.
The long-life asphalt pavement structure based on the microparticle activated natural asphalt high-modulus mixture is characterized in that the upper surface layer of the SMA-13 asphalt concrete is a P6.2-SMA-13 SBS modified asphalt concrete layer. The P6.2-SMA-13 type SBS modified asphalt concrete layer represents an SMA-13 type SBS modified asphalt concrete layer with an oil-stone ratio of 6.2%.
The long-life asphalt pavement structure based on the microparticle activated natural asphalt high-modulus mixture is characterized in that the lower layer of the EME-16 asphalt concrete is a P5.9-EME-16 HMB-W high-modulus asphalt concrete layer. The P5.9-EME-16 type HMB-W high modulus asphalt concrete layer represents an EME-16 type HMB-W high modulus asphalt concrete layer having an oil to stone ratio of 5.9%.
The long-life asphalt pavement structure based on the microparticle activated natural asphalt high-modulus mixture is characterized in that the EME-20 asphalt concrete base layer is a P5.8-EME-20 HMB-W high-modulus asphalt concrete layer. The P5.8-EME-20 type HMB-W high modulus asphalt concrete layer represents an EME-20 type HMB-W high modulus asphalt concrete layer having an oil to stone ratio of 5.8%.
The long-life asphalt pavement structure based on the microparticle activated natural asphalt high-modulus mixture is characterized in that the thickness of the SMA-13 asphalt concrete upper layer is 4cm.
The long-life asphalt pavement structure based on the microparticle activated natural asphalt high-modulus mixture is characterized in that the thickness of the EME-16 asphalt concrete lower layer is 6cm.
The long-life asphalt pavement structure based on the microparticle activated natural asphalt high-modulus mixture is characterized in that the thickness of the EME-20 asphalt concrete base layer is 24cm.
The long-life asphalt pavement structure based on the microparticle activated natural asphalt high-modulus mixture is characterized in that the thickness of the graded broken stone subbase layer is 20cm.
Compared with the prior art, the utility model has the following advantages:
1. the asphalt pavement structure adopts the particle activated natural asphalt (HMB-W) binding material layer as the EME-20 asphalt concrete base layer and the EME-16 asphalt concrete lower surface layer, and utilizes the high modulus, good load transmission and dispersion capacity, excellent high-temperature stability, water stability and fatigue resistance of the particle activated natural asphalt binding material layer to effectively improve the service performance of the asphalt pavement, prolong the service life of the asphalt pavement, greatly reduce the structural maintenance times of the asphalt pavement in the whole service life period and reduce the whole service life period cost of asphalt pavement engineering.
2. The total thickness of the asphalt pavement structure is 54cm, compared with the traditional semi-rigid base asphalt pavement, the thickness of the asphalt pavement structure can be reduced by 32 cm-42 cm, compared with the full-thickness asphalt pavement, the thickness of the asphalt pavement structure can be reduced by 14 cm-24 cm, the thickness of the asphalt pavement structure can be obviously reduced by more than 20%, the requirements on raw materials such as high-quality aggregates are greatly reduced, and the engineering construction cost is reduced.
The technical scheme of the utility model is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic structural diagram of a full-thickness long-life asphalt pavement paving structure based on a high-modulus asphalt mixture.
Reference numerals illustrate:
1-SMA-13 asphalt concrete upper layer; 2-EME-16 asphalt concrete lower layer;
3-EME-20 asphalt concrete base; 4-graded crushed stone subbase.
Detailed Description
Example 1
As shown in fig. 1, the long-life asphalt pavement structure based on the microparticle activated natural asphalt high-modulus mixture of the present embodiment is characterized by comprising a graded broken stone subbase layer 4, an EME-20 asphalt concrete base layer 3, an EME-16 asphalt concrete lower layer 2 and an SMA-13 asphalt concrete upper layer 1 which are laid from bottom to top, wherein the EME-20 asphalt concrete base layer 3 and the EME-16 asphalt concrete lower layer 2 are both microparticle activated natural asphalt binder layers.
In the asphalt pavement structure of the embodiment, the particle activated natural asphalt binding material layer is used as the EME-20 asphalt concrete base layer 3 and the EME-16 asphalt concrete lower layer 2, so that the modulus, the load transmission and dispersion capacity, the high-temperature stability, the water stability and the fatigue resistance of the EME-20 asphalt concrete base layer 3 and the EME-16 asphalt concrete lower layer 2 are improved, the service performance of the asphalt pavement is effectively improved, the service life of the asphalt pavement is prolonged, and the maintenance cost of the asphalt pavement is reduced; meanwhile, the asphalt pavement structure of the embodiment realizes remarkable thinning of the asphalt pavement structure on the premise of prolonging the service life of the pavement, and reduces the raw material and construction cost.
Further, in this embodiment, the SMA-13 asphalt concrete upper layer 1 is a P6.2-SMA-13 SBS modified asphalt concrete layer. The P6.2-SMA-13 type SBS modified asphalt concrete layer represents an SMA-13 type SBS modified asphalt concrete layer with an oil-stone ratio of 6.2%. The SMA-13 type SBS modified asphalt concrete layer with the oil-stone ratio has good anti-skid and wear-resistant performances, high-temperature deformation resistance, low-temperature cracking resistance and water stability, and ensures that the SMA-13 asphalt concrete upper layer 1 meets the performance requirements of an asphalt concrete pavement structure upper layer.
Further, the EME-16 asphalt concrete lower layer 2 in the embodiment is a P5.9-EME-16 HMB-W high modulus asphalt concrete layer. The P5.9-EME-16 type HMB-W high modulus asphalt concrete layer represents an EME-16 type HMB-W high modulus asphalt concrete layer having an oil to stone ratio of 5.9%. The EME-16 type HMB-W high-modulus asphalt concrete layer with the oil-stone ratio has good load transmission and dispersion capacity and excellent rutting resistance and fatigue resistance, and ensures that the EME-16 asphalt concrete lower surface layer 2 meets the performance requirements of an asphalt concrete pavement structure lower surface layer.
Further, the EME-20 asphalt concrete base layer 3 in this example is a P5.8-EME-20 HMB-W high modulus asphalt concrete layer. The P5.8-EME-20 type HMB-W high modulus asphalt concrete layer represents an EME-20 type HMB-W high modulus asphalt concrete layer having an oil to stone ratio of 5.8%. The EME-20 type HMB-W high-modulus asphalt concrete layer with the oil-stone ratio has high flexibility and good fatigue resistance, and ensures that the EME-20 asphalt concrete base layer 3 meets the performance requirements of an asphalt concrete pavement structure base layer.
Further, the thickness of the SMA-13 asphalt concrete upper layer 1 in this example was 4cm.
Further, the EME-16 asphalt concrete lower layer 2 in this example has a thickness of 6cm.
Further, the EME-20 asphalt concrete base layer 3 in this example has a thickness of 24cm.
Further, the thickness of the graded crushed stone subbing layer 4 in this embodiment is 20cm.
The asphalt pavement structure formed by the structural layers with the thickness realizes the win-win technical economy of the high-modulus long-service-life asphalt pavement structure on the basis of comprehensively considering the fatigue resistance, the high-temperature deformation resistance, the low-temperature cracking resistance, the water stability and the cost effectiveness.
The paving process of the long-life asphalt pavement structure based on the microparticle activated natural asphalt (HMB-W) high-modulus mixture comprises the following steps: spraying penetrating oil on the surface of the graded broken stone subbase layer 4; after penetrating layer oil fully permeates, transporting the mixed EME-20 asphalt concrete mixture to a site, paving the mixture on the graded broken stone subbase layer 4 in two layers according to the construction thickness of 12cm one layer, respectively rolling and forming the graded broken stone subbase layer, and finally forming an EME-20 asphalt concrete base layer 3 with the total thickness of 24 cm; spraying adhesive layer oil on the EME-20 asphalt concrete base layer 3, and spreading the EME-16 asphalt concrete mixture on the EME-20 asphalt concrete base layer 3 after emulsion breaking and water evaporation of emulsified asphalt are completed to form an EME-16 asphalt concrete lower layer 2; and finally spraying the adhesive layer oil on the EME-16 asphalt concrete lower layer 2, and spreading the SMA-13 asphalt concrete mixture on the EME-16 asphalt concrete lower layer 2 after emulsion breaking and water evaporation of emulsified asphalt are completed to form an SMA-13 asphalt concrete upper layer 1.
The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the present utility model. Any simple modification, variation and equivalent variation of the above embodiments according to the technical substance of the utility model still fall within the scope of the technical solution of the utility model.
Claims (8)
1. The utility model provides a long-life bituminous pavement structure based on particulate activated natural asphalt high modulus mixture, its characterized in that includes gradation rubble subbase layer (4), EME-20 asphalt concrete basic unit (3), EME-16 asphalt concrete lower floor (2) and SMA-13 asphalt concrete top layer (1) that lays from bottom to top, EME-20 asphalt concrete basic unit (3) and EME-16 asphalt concrete lower floor (2) are particulate activated natural asphalt binder layer.
2. The long life asphalt pavement structure based on the particulate activated natural asphalt high modulus compound according to claim 1, wherein the SMA-13 asphalt concrete upper layer (1) is a P6.2-SMA-13 SBS modified asphalt concrete layer.
3. A long life bituminous pavement structure based on a particulate activated natural bituminous mixture according to claim 1, characterized in that the EME-16 bituminous concrete underlying layer (2) is a P5.9-EME-16 HMB-W high modulus bituminous concrete layer.
4. A long life bituminous pavement structure based on a particulate activated natural bituminous mixture according to claim 1, characterized in that said EME-20 bituminous concrete base layer (3) is a P5.8-EME-20 HMB-W high modulus bituminous concrete layer.
5. A long life bituminous pavement structure based on a particulate activated natural bituminous mixture according to claim 1, characterized in that the SMA-13 bituminous concrete upper layer (1) has a thickness of 4cm.
6. A long life bituminous pavement structure based on a particulate activated natural bituminous mixture according to claim 1, characterized in that the thickness of the EME-16 bituminous concrete underlying layer (2) is 6cm.
7. A long life bituminous pavement structure based on a particulate activated natural bituminous mixture according to claim 1, characterized in that the EME-20 bituminous concrete base layer (3) has a thickness of 24cm.
8. Long life bituminous pavement structure based on a particulate activated natural bituminous mixture according to claim 1, characterized in that the thickness of the graded crushed stone sub-layer (4) is 20cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321307842.2U CN219731509U (en) | 2023-05-26 | 2023-05-26 | Long-life asphalt pavement structure based on microparticle activated natural asphalt high-modulus mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321307842.2U CN219731509U (en) | 2023-05-26 | 2023-05-26 | Long-life asphalt pavement structure based on microparticle activated natural asphalt high-modulus mixture |
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| Publication Number | Publication Date |
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| CN219731509U true CN219731509U (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321307842.2U Active CN219731509U (en) | 2023-05-26 | 2023-05-26 | Long-life asphalt pavement structure based on microparticle activated natural asphalt high-modulus mixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219731509U (en) |
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2023
- 2023-05-26 CN CN202321307842.2U patent/CN219731509U/en active Active
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