CN220665855U - Intersection wear-resistant pavement structure provided with semi-soft damping asphalt - Google Patents
Intersection wear-resistant pavement structure provided with semi-soft damping asphalt Download PDFInfo
- Publication number
- CN220665855U CN220665855U CN202322151823.1U CN202322151823U CN220665855U CN 220665855 U CN220665855 U CN 220665855U CN 202322151823 U CN202322151823 U CN 202322151823U CN 220665855 U CN220665855 U CN 220665855U
- Authority
- CN
- China
- Prior art keywords
- layer
- semi
- asphalt
- wear
- pavement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000010426 asphalt Substances 0.000 title claims abstract description 52
- 238000013016 damping Methods 0.000 title claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 30
- 239000004568 cement Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000007779 soft material Substances 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 45
- 239000002344 surface layer Substances 0.000 claims description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 8
- 239000011707 mineral Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 239000011800 void material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 4
- 201000010099 disease Diseases 0.000 abstract description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 8
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical group CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Road Paving Structures (AREA)
Abstract
The utility model relates to a wear-resistant pavement structure for intersections provided with semi-soft damping asphalt, which comprises a semi-soft material upper layer 1, a modified emulsified asphalt bonding layer 2, an AC-5 asphalt mixture middle layer 3, an AC-13 asphalt mixture lower layer 4, a 4% cement stabilized macadam base layer 5, a 5% cement stabilized macadam base layer 6 and a graded macadam layer 7 which are paved in sequence from top to bottom, wherein the semi-soft material upper layer is an SBS modified asphalt mixture layer. The semi-flexible material upper layer provided by the utility model has stronger binding force through actual measurement, has obvious abrasion-resistant effect, and is more suitable for road surface structure of vehicle braking at an intersection. The high-performance wear-resistant pavement has the advantages of being strong in mechanical property and wear resistance, provides a good damping effect for a pavement, and can remarkably reduce pavement diseases and pavement maintenance cost.
Description
Technical Field
The utility model relates to a wear-resistant pavement structure for intersections provided with semi-soft damping asphalt, and relates to the field of pavement.
Background
The road traffic in China is large, the impact effect and the inertia effect of heavy traffic have great damage to the road structure, the vibration reduction effect of the road surface with the rigid structure is weak, and the road surface can be classified into a flexible road surface, a rigid road surface and a semi-rigid road surface according to the mechanical property of the road surface under the load effect; the flexible pavement is a layered pavement structure composed of a viscoplastic material such as asphalt or a granular mixture. The road surface features low flexural tensile strength, certain deflection deformation under the action of wheel load and high load bearing capacity. The bearing capacity of the pavement is determined by the load diffusion characteristic of the whole layered system, and is greatly influenced by the strength and stability of the soil base. Rigid pavement mainly refers to pavement structures using cement concrete as a surface layer or a base layer. Compared with a flexible pavement, the cement concrete pavement slab has high flexural tensile strength and elastic modulus, and has strong load diffusion capacity. The wheel load can act on the lower layer with smaller pressure in a larger range through the plate body, so that the bearing capacity of the pavement is largely determined by the bending tensile strength of the plate.
However, cement concrete is a brittle material, which has a small tensile strain capacity and is easily broken when the plate body is subjected to a sudden load, a sudden temperature change, and uneven deformation of the soil base. The semi-rigid pavement is made up by using lime, flyash and cement as binder and making them into mixed material pavement structure. Such structures are not abrasion resistant and cannot be used as a facing. It has the mechanical properties of a flexible pavement in the early stage, but the strength and rigidity of the pavement increase correspondingly with the increase of age, and shows some characteristics similar to those of a rigid pavement slab.
The semi-flexible material upper layer provided by the utility model has stronger binding force through actual measurement, has obvious abrasion-resistant effect, and is more suitable for road surface structure of vehicle braking at an intersection.
Disclosure of Invention
In view of the defects of the prior art, the technical problem to be solved by the utility model is to provide a wear-resistant pavement structure for intersections provided with semi-soft damping asphalt.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a establish wear-resisting pavement structure of intersection of half gentle damping pitch, includes half gentle material top layer, modified emulsified asphalt tie coat, the AC-5 bituminous mixture middle surface layer, AC-13 bituminous mixture lower surface layer, 4% cement stabilized macadam basic unit, 5% cement stabilized macadam basic unit, the graded broken stone layer of laying from top to bottom in proper order, half gentle material top layer is SBS modified asphalt mixture layer.
Preferably, in the SBS modified asphalt mixture layer, the SBS content of the SBS modified asphalt is 6%, the aggregate particle size is pentagonal particle aggregate with the diameter of 10mm, and the area ratio of the asphalt content in the asphalt mixture is 40%.
Preferably, the modified emulsified asphalt bonding layer adopts a water-based epoxy resin-emulsified asphalt bonding material, the dosage of the water-based epoxy resin bonding material is 5.5%, and the mixing ratio of the bonding material is epoxy resin: curing agent: additive = 10:3:4, wherein the additive is dibutyl phthalate.
Preferably, the surface layer of the AC-5 asphalt mixture is an oil-rich asphalt mixture layer with the oil-stone ratio of 10%, the mineral powder consumption is not more than 15%, the particle size range of the mineral powder is 0.075-0.6mm, the powder-cement ratio is controlled to be 0.9-1.2, the particle size of the mineral powder is 4.75mm, the passing rate is 96.6%, and the void ratio VV value is 0.5% -2.5%.
Preferably, the lower layer of the AC-13 asphalt mixture is an asphalt mixture layer with an optimal oil-stone ratio of 5.2%.
Preferably, the upper layer of semi-flexible material is set to 30m according to the braking distance.
Preferably, the pavement structure is an inverted trapezoid structure, and the grooving angle of the side grooves is 45 degrees.
Preferably, a synchronous macadam sealing layer is arranged between the lower surface layer of the AC-13 asphalt mixture and the 4% cement stabilized macadam base layer.
Compared with the prior art, the utility model has the following beneficial effects: the semi-flexible material upper layer provided by the utility model has stronger binding force through actual measurement, has obvious abrasion-resistant effect, and is more suitable for road surface structure of vehicle braking at an intersection. The high-performance wear-resistant pavement has the advantages of being strong in mechanical property and wear resistance, provides a good damping effect for a pavement, and can remarkably reduce pavement diseases and pavement maintenance cost.
The utility model will be described in further detail with reference to the drawings and the detailed description.
Drawings
Fig. 1 is a schematic view of the construction of an embodiment of the present utility model.
Detailed Description
The utility model will be further described with reference to the accompanying drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As shown in fig. 1, the embodiment provides a wear-resistant pavement structure with semi-soft damping asphalt for an intersection, which comprises a semi-soft material upper layer 1, a modified emulsified asphalt bonding layer 2, an AC-5 asphalt mixture middle layer 3, an AC-13 asphalt mixture lower layer 4, a 4% cement stabilized macadam base layer 5, a 5% cement stabilized macadam base layer 6 and a graded macadam layer 7 which are sequentially paved from top to bottom, wherein the semi-soft material upper layer is an SBS modified asphalt mixture layer.
In the embodiment of the utility model, in the SBS modified asphalt mixture layer, the SBS content of SBS modified asphalt is 6%, the SBS modified asphalt has higher loss factor, the damping effect is obviously increased, the pentagonal particle aggregate with the aggregate particle size of 10mm has better wear resistance, and the area ratio of the asphalt content in the asphalt mixture is 40%.
In the embodiment of the utility model, the modified emulsified asphalt bonding layer adopts a water-based epoxy resin-emulsified asphalt bonding material, the dosage of the water-based epoxy resin bonding material is 5.5%, and the mixing ratio of the bonding material is epoxy resin: curing agent: additive = 10:3:4, wherein the additive is dibutyl phthalate.
In the embodiment of the utility model, the surface layer of the AC-5 asphalt mixture is an oil-rich asphalt mixture layer with the oil-stone ratio of 10%, so that a better stress absorption effect is achieved, the consumption of mineral powder is not more than 15%, the particle size range of the mineral powder is 0.075-0.6mm, the powder-cement ratio is controlled to be 0.9-1.2, the particle size of the mineral powder is 4.75mm, the passing rate is 96.6%, and the void ratio VV value is 0.5% -2.5%.
In the embodiment of the utility model, the lower layer of the AC-13 asphalt mixture is an asphalt mixture layer with an optimal whetstone ratio of 5.2%.
In the embodiment of the utility model, the upper layer of the semi-flexible material is set to be 30m according to the braking distance.
In the embodiment of the utility model, the pavement structure is an inverted trapezoid structure, and the grooving angle of the side groove is 45 degrees.
In the embodiment of the utility model, a synchronous macadam sealing layer 8 is arranged between the lower surface layer of the AC-13 asphalt mixture and the 4% cement stabilized macadam base layer.
In the embodiment of the utility model, the damping vibration attenuation effect is taken into consideration while sufficient rigidity is provided, the damage of impact load generated by vehicle braking to the road surface and the tire is reduced, and meanwhile, the semi-flexible material upper layer provided by the utility model has stronger binding force through actual measurement, so that the abrasion-resistant effect is obviously improved, and the utility model is more suitable for road surface structures of vehicles braking at intersections. The high-performance wear-resistant pavement has the advantages of being strong in mechanical property and wear resistance, provides a good damping effect for a pavement, and can remarkably reduce pavement diseases and pavement maintenance cost.
The above description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present utility model still fall within the protection scope of the technical solution of the present utility model.
Claims (5)
1. An intersection wear-resistant pavement structure provided with semi-soft damping asphalt is characterized in that: the semi-soft material comprises a semi-soft material upper layer, a modified emulsified asphalt bonding layer, an AC-5 asphalt mixture middle surface layer, an AC-13 asphalt mixture lower surface layer, a 4% cement stabilized macadam base layer, a 5% cement stabilized macadam base layer and a graded macadam layer which are sequentially paved from top to bottom, wherein the semi-soft material upper layer is an SBS modified asphalt mixture layer.
2. The intersection wear-resistant pavement structure provided with semi-soft damping asphalt according to claim 1, wherein: the AC-5 asphalt mixture middle surface layer is an oil-rich asphalt mixture layer, the granularity range of mineral powder is 0.075-0.6mm, the powder-cement ratio is controlled to be 0.9-1.2, the granularity of mineral powder is 4.75mm, the passing rate is 96.6%, and the void ratio VV value is 0.5% -2.5%.
3. The intersection wear-resistant pavement structure provided with semi-soft damping asphalt according to claim 1, wherein: the upper layer of the semi-flexible material is set to be 30m according to the braking distance.
4. The intersection wear-resistant pavement structure provided with semi-soft damping asphalt according to claim 1, wherein: the pavement structure is an inverted trapezoid structure, and the grooving angle of the side groove is 45 degrees.
5. The intersection wear-resistant pavement structure provided with semi-soft damping asphalt according to claim 1, wherein: a synchronous macadam sealing layer is arranged between the lower surface layer of the AC-13 asphalt mixture and the 4% cement stabilized macadam base layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322151823.1U CN220665855U (en) | 2023-08-11 | 2023-08-11 | Intersection wear-resistant pavement structure provided with semi-soft damping asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322151823.1U CN220665855U (en) | 2023-08-11 | 2023-08-11 | Intersection wear-resistant pavement structure provided with semi-soft damping asphalt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220665855U true CN220665855U (en) | 2024-03-26 |
Family
ID=90337003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322151823.1U Active CN220665855U (en) | 2023-08-11 | 2023-08-11 | Intersection wear-resistant pavement structure provided with semi-soft damping asphalt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220665855U (en) |
-
2023
- 2023-08-11 CN CN202322151823.1U patent/CN220665855U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103864374B (en) | Half-flexible pavement base material and preparation method thereof | |
| CN1920176B (en) | Deck installation structure of big-span steel bridge | |
| CN101092808A (en) | Stress absorption structured llayer of discontinuous ajar particle distribution limit mixture for asphaltum with high viscosity | |
| CN207739091U (en) | Car lane road surface structure at a kind of bus stop | |
| CN111648192A (en) | Impact-resistant wear-resistant environment-friendly pavement and construction method | |
| CN110714389A (en) | Ultrathin high-performance composite semi-flexible surface layer pavement structure and construction method thereof | |
| CN210916843U (en) | Highway road surface structure | |
| CN112359669A (en) | Road intersection height anti-deformation road surface structure and method | |
| CN220665855U (en) | Intersection wear-resistant pavement structure provided with semi-soft damping asphalt | |
| CN108360327A (en) | A kind of permanent seal cooling advanced composite material (ACM) road structure and construction method | |
| CN108301276A (en) | A kind of long-life tencel concrete road surface structure and construction method | |
| CN201826241U (en) | Low-carbon, energy-saving and environment-friendly road pavement | |
| CN115450086B (en) | Old cement concrete pavement reconstruction structure suitable for non-extra-heavy traffic grade and design method | |
| CN113957761A (en) | Ultra-thin bituminous pavement of high-grade highway | |
| CN201236314Y (en) | Water discharge protective bridge deck paving structure | |
| CN213448074U (en) | Composite construction suitable for steel bridge deck drainage is mated formation | |
| KR100690393B1 (en) | Method of paving the outer layer of road with aspalt concrete | |
| CN113774749A (en) | Pavement structure construction method of dynamic square of automobile test field | |
| CN100338310C (en) | New road surface structure layer | |
| CN1572749A (en) | Concrete for paving | |
| CN217378443U (en) | Ultra-thin bituminous pavement of high-grade highway | |
| CN205242199U (en) | Durability road surface structure | |
| CN111764220A (en) | Construction method of assembled porous rubber particle pavement structure and constructed pavement structure | |
| CN110552271A (en) | anti-skid pavement structure and construction method thereof | |
| CN217556597U (en) | Noise-reduction drainage pavement structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |