CN207362622U - A kind of porous asphalt pavement ultrathin overlay structure - Google Patents
A kind of porous asphalt pavement ultrathin overlay structure Download PDFInfo
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- CN207362622U CN207362622U CN201721182282.7U CN201721182282U CN207362622U CN 207362622 U CN207362622 U CN 207362622U CN 201721182282 U CN201721182282 U CN 201721182282U CN 207362622 U CN207362622 U CN 207362622U
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- asphalt
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Abstract
The utility model provides a kind of porous asphalt pavement ultrathin overlay structure, the pavement structure is followed successively by drainage asphalt thin overlay, water-proof tack coat, asphalt surface course, basic unit, underlayment, roadbed from top to bottom, and the wherein thickness of drainage asphalt thin overlay is 1.5~3cm.The utility model proposes porous asphalt pavement ultrathin overlay structure, can effectively reduce rain water depth on road surface, increase pavement skid resistance condition, reduce water mist, water caused by rainy day driving splash, water drift many other adverse effects, such as, increase rainy day travel safety and comfort；The traffic noise of driving vehicle generation can be reduced at the same time, reduce sensitiveness of the roadside to acoustic environment；With economical and practical, the characteristics of saving engineering construction cost and resource.
Description
Technical field
The utility model belongs to road engineering care field, and in particular to a kind of porous asphalt pavement ultrathin overlay structure.
Background technology
In the case where the continuous development of China's economy is improved, highway network frame has preliminarily formed.It is but positive in highway communication
While playing a role, with the more increase of road age and the volume of traffic, its service function is faced with acid test.In Yuan Lu
Ultrathin overlay is carried out on face, improves its pavement performance, improves its active time, is preventive maintenance skill relatively conventional at present
Art.
Traditional thin overlay is laid with by dense bitumen mixture and formed more, though former pavement track can be repaired, split
The diseases such as seam, pitted skin, but it is possible that durability is insufficient, security is poor, comfort is bad etc. is all during later stage use
More drawbacks.
In consideration of it, the developed country such as America and Europe, Japan is by the small particle open gradation drainage index of skeleton-gap structure
As preventive maintenance material-paving in old road surfaces, formation drainage asphalt thin overlay.This cover structure is inside road surface
Drainage channel is formed, road surface has Quick drainage, antiskid performance height in use, noise is low, suppresses water mist, prevents water
Drift, mitigate outstanding advantages of dazzle, high safety, high-comfort cover can be used as to mat formation and extensive use.
Utility model content
For the shortcoming of this area, the purpose of this utility model is to provide a kind of porous asphalt pavement ultrathin overlay
Structure, it uses the asphalt of open gradation large porosity to be mainly used for highway, Class I highway as thin overlay
Or in the bituminous pavement preventive maintenance such as town road or corrective maintenance, possess good road surface internal drainage ability, can have
Effect reduces the traffic noise that driving vehicle produces, and construction is simple, durability are good, workable.
The technical solution for realizing the utility model aim is：
A kind of porous asphalt pavement ultrathin overlay structure, the pavement structure are followed successively by the ultra-thin cover of drainage asphalt from top to bottom
Surface layer, water-proof tack coat, asphalt surface course, basic unit, underlayment, roadbed, the wherein thickness of drainage asphalt thin overlay for 1.5~
3cm。
Wherein, the drainage asphalt thin overlay is mixed using the drainage asphalt of PAC-05, PAC-10 or PAC-13 grading
Close material to be laid with, its voidage scope is 15~25%, and infiltration coefficient is not less than 3000ml/min.
Wherein, the water-proof tack coat is modified emulsifying asphalt, is modified heated bitumen, is modified heated bitumen crushed stone sealing, is water-based
A kind of be laid with macromolecule modified emulsified asphalt forms.
A kind of optimal technical scheme of the utility model is that the water-proof tack coat is laid with for modified emulsifying asphalt and forms,
The spread quantity of modified emulsifying asphalt is 0.2~1.0kg/m2。
Another optimal technical scheme of the utility model is that the water-proof tack coat is that modified heated bitumen laying forms, institute
It is SBS modified pitch or rubber asphalt to state modified heated bitumen, and the spread quantity of modified heated bitumen is 1.0~2.0kg/m2。
Or, the water-proof tack coat (2) is modified heated bitumen crushed stone sealing, the modified heated bitumen is SBS modified pitch
Or rubber asphalt, spread quantity are 1.2~2.5kg/m2；Ballast grain sizes are 3~5mm or 5~10mm, wrap up in attached asphalt content in advance and are
0.05~1.0%, gravel mulch rate is 30~80%.
Or, the water-proof tack coat is aqueous high molecular modified emulsifying asphalt, aqueous high molecular modified emulsifying asphalt is spilt
Cloth amount is 0.2~1.0kg/m2.The aqueous high molecular modified emulsifying asphalt that the utility model uses is the application unit development
Product, it is prepared according to the method disclosed in patent CN105694786A.
Wherein, the asphalt surface course is 2~3 structure sheaf positions, is laid with using dense bitumen mixture, including upper layer
And cutting optimal, or upper layer, the middle and the lower layer.
Wherein, the thickness of the basic unit is 18~50cm, is framework compact type semi-rigid type base or flexbile base；The bottom
Basic unit for semi-rigid type base, flexbile base or other.
The beneficial effects of the utility model are：
1st, porous asphalt pavement ultrathin overlay structure can effectively reduce rain water depth on road surface, increase pavement skid resistance condition, subtract
Many other adverse effects, such as water mist, water caused by day driving short of rain splash, water drift, increases rainy day travel safety and comfort；
2nd, porous asphalt pavement ultrathin overlay structure has the function that to absorb, reduces tire rolling noise, can effectively reduce
The traffic noise that driving vehicle produces, reduces sensitiveness of the roadside to acoustic environment；
3rd, porous asphalt pavement ultrathin overlay structure can meet the use of deck paving as new preventive maintenance
It is required that not only unobvious increase structural thickness, but also can realize the excellent performances such as road surface drainage, antiskid, noise reduction.
4th, this structure construction is simple, easy to operate, and high-temperature behavior is excellent, and durability is good, has economic and practical, saving engineering
The characteristics of construction cost and resource.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of porous asphalt pavement ultrathin overlay structure of the utility model.
In figure, 1：Drainage asphalt thin overlay；2：Water-proof tack coat；3：Upper layer；4：Middle surface layer；5：Cutting optimal；6：
Basic unit；7：Underlayment；8：Roadbed.
Embodiment
The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.Without departing substantially from this
In the case of utility model spirit and essence, the modifications or substitutions made to the utility model method, step or condition belong to
The scope of protection of the utility model.
, it is necessary to explanation, term " on ", " under ", "front", "rear", " top ", " bottom " in the description of the utility model
The orientation or position relationship of the instructions such as " interior ", " outer " are based on orientation shown in the drawings or position relationship, are for only for ease of and retouch
State the present invention and simplify description, rather than indicate or imply that signified device or element there must be specific orientation, with specific
Azimuth configuration and operation, it is impossible to be interpreted as limitation of the present invention.
Unless otherwise specified, the conventional means that technological means used in embodiment is known to those skilled in the art.
Below in conjunction with the accompanying drawings and specific embodiment the utility model is described in further detail.
Embodiment 1
Referring to Fig. 1, a kind of porous asphalt pavement ultrathin overlay structure, the pavement structure is followed successively by draining drip from top to bottom
Blue or green thin overlay 1, water-proof tack coat 2, upper layer 3, middle surface layer 4, cutting optimal 5, basic unit 6, underlayment 7, roadbed 8.
Wherein, the drainage asphalt thin overlay 1 is laid with using PAC-05 drainage index, thickness 1.5cm,
Voidage is 18.2%, infiltration coefficient 5013ml/min, grading limit such as table 1 below.
Table 1：Grading limit
| Type | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.075 |
| PA-05 | 100 | 15~50 | 8~30 | 5~12 | 4~10 | 4~8 | 4~7 | 3~6 |
Wherein, the water-proof tack coat 2 between drainage asphalt thin overlay 1 and upper layer 3 is synchronously broken using rubber asphalt
Stone sealing, the spread quantity of rubber asphalt is preferably 1.5kg/m2, and dispense the pre- of 50~70% coverage rates and wrap up in attached asphalt macadam.It is described
Rubble uses the basalt of 5~10mm specifications, wraps up in attached 0.5% pitch in advance.
In the present embodiment, upper layer 3 is AC-13 bituminous concretes, thickness 4cm；Middle surface layer 4 is AC-20 pitch coagulations
Soil, thickness 6cm；Cutting optimal 5 is AC-25 bituminous concretes, thickness 8cm；Basic unit 6 is framework compact type semi-rigid type base,
Thickness is 36cm, according to existing《Standard specification for construction and acceptance of highway asphalt pavement》Making；Underlayment 7 is semi-rigid stable granulate knot
Structure, thickness 20cm, according to existing《Standard specification for construction and acceptance of highway asphalt pavement》Making.
Embodiment 2
A kind of porous asphalt pavement ultrathin overlay structure, the pavement structure are followed successively by the ultra-thin cover of drainage asphalt from top to bottom
Surface layer 1, water-proof tack coat 2, upper layer 3, cutting optimal 5, basic unit 6, underlayment 7, roadbed 8.
Wherein, the drainage asphalt thin overlay 1 is laid with using PAC-10 drainage index, thickness 3.0cm,
Voidage is 19.6%, infiltration coefficient 5691ml/min, grading limit such as table 2 below.
Table 2：Grading limit
| Type | 13.2 | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 |
| PA-10 | 100 | 80~100 | 8~28 | 5~15 | 5~12 | 4~10 | 4~9 | 4~8 |
Wherein, the water-proof tack coat 2 between drainage asphalt thin overlay 1 and upper layer 3 uses SBS modified emulsifying asphalts
It is laid with, pitch sprinkling amount is 0.6kg/m2。
In the present embodiment, upper layer 3 is SMA-16 bituminous concretes, thickness 5cm；Cutting optimal 5 is AC-25 pitch coagulations
Soil, thickness 8cm；Basic unit 6 is framework compact type semi-rigid type base, thickness 36cm, according to existing《Asphalt highway is constructed
Technical specification》Making；Underlayment 7 is semi-rigid stable granulate structure, thickness 20cm, according to existing《Asphalt highway is applied
Work technical specification》Making.
Other are set with embodiment 1.
Embodiment 3
Referring to Fig. 1, a kind of porous asphalt pavement ultrathin overlay structure, the pavement structure is followed successively by draining drip from top to bottom
Blue or green thin overlay 1, water-proof tack coat 2, upper layer 3, middle surface layer 4, cutting optimal 5, basic unit 6, underlayment 7, roadbed 8.
Wherein, the drainage asphalt thin overlay 1 is laid with using PAC-05 drainage index, thickness 1.5cm,
Voidage is 17.7%, and infiltration coefficient 4832ml/min, grading limit is the same as embodiment 1.
Wherein, the water-proof tack coat 2 between drainage asphalt thin overlay 1 and upper layer 3 is using by water, aqueous high molecular
The aqueous high molecular modified pitch (preparation method is with patent CN105694786A) of modifying agent and emulsified asphalt composition is laid with, water-based
The spread quantity of polymer-modified asphalt is 0.5kg/m2。
In the present embodiment, upper layer 3 is AC-13 bituminous concretes, thickness 4cm；Middle surface layer 4 is AC-20 pitch coagulations
Soil, thickness 6cm；Cutting optimal 5 is AC-25 bituminous concretes, thickness 8cm；Basic unit 6 is framework compact type semi-rigid type base,
Thickness is 36cm, according to existing《Standard specification for construction and acceptance of highway asphalt pavement》Making；Underlayment 7 is semi-rigid stable granulate knot
Structure, thickness 20cm, according to existing《Standard specification for construction and acceptance of highway asphalt pavement》Making.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model technical principle is not departed from, some improvements and modifications can also be made, these change
The scope of protection of the utility model is also should be regarded as into retouching.
Claims (9)
1. a kind of porous asphalt pavement ultrathin overlay structure, it is characterised in that the pavement structure is followed successively by draining from top to bottom
Asphalt ultrathin finishing coat (1), water-proof tack coat (2), asphalt surface course, basic unit (6), underlayment (7), roadbed (8), wherein draining drip
The thickness of blue or green thin overlay (1) is 1.5~3cm.
2. porous asphalt pavement ultrathin overlay structure according to claim 1, it is characterised in that the drainage asphalt is ultra-thin
Finishing coat (1) is laid with using the drainage index of PAC-05, PAC-10 or PAC-13 grading, its voidage scope for 15~
25%, infiltration coefficient is not less than 3000ml/min.
3. porous asphalt pavement ultrathin overlay structure according to claim 1, it is characterised in that the water-proof tack coat
(2) it is modified emulsifying asphalt, modification heated bitumen, be modified in heated bitumen crushed stone sealing, aqueous high molecular modified emulsifying asphalt one
Kind laying forms.
4. porous asphalt pavement ultrathin overlay structure according to claim 3, it is characterised in that the water-proof tack coat
(2) it is laid with and forms for modified emulsifying asphalt, the spread quantity of modified emulsifying asphalt is 0.2~1.0kg/m2。
5. porous asphalt pavement ultrathin overlay structure according to claim 3, it is characterised in that the water-proof tack coat
(2) it is laid with and forms for modified heated bitumen, the modified heated bitumen is SBS modified pitch or rubber asphalt, and modified heated bitumen is spilt
Cloth amount is 1.0~2.0kg/m2。
6. porous asphalt pavement ultrathin overlay structure according to claim 3, it is characterised in that the water-proof tack coat
(2) it is modified heated bitumen crushed stone sealing, the modified heated bitumen be SBS modified pitch or rubber asphalt, spread quantity is 1.2~
2.5kg/m2；Ballast grain sizes are 3~5mm or 5~10mm, and it is 0.05~1.0% to wrap up in attached asphalt content in advance, and gravel mulch rate is 30
~80%.
7. porous asphalt pavement ultrathin overlay structure according to claim 3, it is characterised in that the water-proof tack coat
(2) it is aqueous high molecular modified emulsifying asphalt, the spread quantity of aqueous high molecular modified emulsifying asphalt is 0.2~1.0kg/m2。
8. according to any porous asphalt pavement ultrathin overlay structure of claim 1~7, it is characterised in that the pitch
Surface layer is 2~3 structure sheaf positions, including upper layer (3) and cutting optimal (5), or upper layer (3), middle surface layer (4) and cutting optimal
(5)。
9. according to any porous asphalt pavement ultrathin overlay structure of claim 1~7, it is characterised in that the basic unit
(6) thickness is 18~50cm, is framework compact type semi-rigid type base or flexbile base；The underlayment (7) is semi-rigid base
Layer, flexbile base or other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721182282.7U CN207362622U (en) | 2017-09-15 | 2017-09-15 | A kind of porous asphalt pavement ultrathin overlay structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721182282.7U CN207362622U (en) | 2017-09-15 | 2017-09-15 | A kind of porous asphalt pavement ultrathin overlay structure |
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| Publication Number | Publication Date |
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| CN207362622U true CN207362622U (en) | 2018-05-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108529929A (en) * | 2018-05-17 | 2018-09-14 | 江苏博程交通科技有限公司 | Improve the high-strength thin-layer bituminous layer of unsticking suppression ice material spraying Interface Construction depth |
-
2017
- 2017-09-15 CN CN201721182282.7U patent/CN207362622U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108529929A (en) * | 2018-05-17 | 2018-09-14 | 江苏博程交通科技有限公司 | Improve the high-strength thin-layer bituminous layer of unsticking suppression ice material spraying Interface Construction depth |
| CN108529929B (en) * | 2018-05-17 | 2021-08-17 | 江苏博程交通科技有限公司 | High-strength thin-layer asphalt layer for improving structural depth of debonding ice-suppressing material spraying interface |
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