CN206545144U - Suitable for the asphalt overlaying structure of old asphalt pavement overhaul engineering - Google Patents
Suitable for the asphalt overlaying structure of old asphalt pavement overhaul engineering Download PDFInfo
- Publication number
- CN206545144U CN206545144U CN201621487606.3U CN201621487606U CN206545144U CN 206545144 U CN206545144 U CN 206545144U CN 201621487606 U CN201621487606 U CN 201621487606U CN 206545144 U CN206545144 U CN 206545144U
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- asphalt
- sealing
- upper layer
- pavement
- old
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Abstract
The utility model discloses a kind of asphalt overlaying structure suitable for old asphalt pavement overhaul engineering, the pavement structure includes the old asphalt pavement 5 after Comprehensive Treatment, sealing 4 is set on the old asphalt pavement after Comprehensive Treatment, and sealing 4 uses SBS modified pitch synchronous surface dressings；Asphalt surface course is equipped with sealing 4, asphalt surface course is divided into upper layer 1 and cutting optimal 3, grain formula modified pitch AC 20C during the cutting optimal 3 is used；Upper layer 1 is using the geminal fibers asphalt for mixing white flock basalt fibre and grizzled particle shape lignin fibre, and nominal of gathering materials maximum particle diameter is 13.2mm；Modified emulsifying asphalt adhesion coating 2 is set between upper layer 1 and cutting optimal 3.The pavement structure can effectively improve the rutting resistance of overhaul engineering bituminous paving, and have good social and economic effects.
Description
Technical field
The invention belongs to road engineering technical field, it is related to a kind of asphalt overlaying suitable for old asphalt pavement overhaul engineering
Structure.
Background technology
National economy develops the continuous growth and development for having driven domestic Construction of Highway Traffic cause rapidly, according to existing
Highway construction scale, covering is completed highway in China net substantially.Therefore, the development trend of future trajectory from new construction to support
Shield maintenance transformation.Bituminous paving is widely applied because of its good road-ability and superior performance, 90% with
On highway, Class I highway and urban road use bituminous paving.During the use of bituminous paving, crack, car
The diseases such as rut, pit make the performance on road surface gradually reduce, until reaching the medium-capital overhauling curing cycle on road surface.Therefore, in order to
The new situations of Expressway Development are adapted to, a kind of asphalt overlaying structure suitable for old asphalt pavement overhaul engineering are researched and developed very heavy
Will.
Lignin fibre is that natural timber passes through the obtained organic fiber of chemical treatment, and outward appearance is flocculence, it is white or
Canescence.Microstructure fiber is that infall is flat with sigmoid, rough, porous, there is good tough
Property, dispersiveness and chemical stability, water absorbing capacity is strong, and oil suction and stable effect can be played in SMA.Basalt fibre is
The pure natural mineral fibres of a kind of environmental protection, with operating temperature range is big, excellent in mechanical performance, chemical stability are good, anti-
The advantage such as ageing properties are good, stability is good, thermal insulation properties are good, can increase pitch deformation reduction under cryogenic, modulus
Greatly, stiffness is improved, and is effectively improved the anti-shear performance of asphalt.
After basalt fibre and lignin fibre are combined in incorporation asphalt, the anti-of bituminous paving can be effectively improved
The ability of rut ability and anti-water damage, improves the regeneration rate of old asphalt mixture.Therefore, a kind of asphalt overlaying knot is developed
Structure is used for old asphalt pavement overhaul engineering tool and is of great significance.
The content of the invention
The technical problems to be solved by the invention are to design a kind of asphalt overlaying suitable for old asphalt pavement overhaul engineering
Structure, this structure can play a part of improving the rutting resistance and anti-water damage ability on road surface, and be used with excellent road
Performance and social and economic effects.
To achieve the above object, the technical scheme is that：
A kind of asphalt overlaying structure suitable for old asphalt pavement overhaul engineering, including：Bituminous concrete surface road after Comprehensive Treatment
Face, the Comprehensive Treatment mode is that milling spreads hot recycling compound, digging and crack treatment again；Bituminous concrete surface road after Comprehensive Treatment
Sealing is set on face, and the sealing uses SBS modified pitch synchronous surface dressings, and thickness is 1cm；Bituminous sheaths are equipped with sealing
Layer, the thickness of bituminous surface is 10cm, is divided into upper layer and cutting optimal, grain formula modified pitch AC- during the cutting optimal is used
20C, thickness is 6cm；The upper layer is using the double-fiber for mixing white flock basalt fibre and grizzled particle shape lignin fibre
Asphalt is tieed up, nominal of gathering materials maximum particle diameter is 13.2mm, and thickness is 4cm；Adhesion coating is set between upper layer and cutting optimal, institute
State adhesion coating and use modified emulsifying asphalt.
Beneficial effects of the present invention are as follows：
Asphalt overlaying structure of the present invention, with excellent high-temperature behavior and water stability, can effectively improve pitch
The Rut resistance and anti-water damage ability on road surface, at the same when can improve regeneration old asphalt mixture recovery utilization rate, use
Geminal fibers asphalt upper layer bitumen aggregate ratio reduces by 10% or so than single lignin fibre asphalt bitumen aggregate ratio
Ratio, greatlys save build cost, and the price of lignin fibre is far below basalt fibre, therefore fine with single basalt
Dimension asphalt is compared, and economic benefit is also preferable, it is seen that asphalt overlaying structure of the invention has obvious economic benefit, can
Production cost is reduced, is increased economic efficiency, and because the lifting of its pavement performance can greatly prolong service life, and reclaim again
High usage during utilization, the structure has good social benefit again.
The present invention is according to raising old asphalt pavement overhaul suitable for the asphalt overlaying structure of old asphalt pavement overhaul engineering
The principle of Pavement Performance carries out reasonable selection and scientific design afterwards.Geminal fibers pitch is used in old asphalt pavement overhaul engineering
Structure is overlayed, the advantage of two kinds of fibers can be given full play to, makes compound that there is higher strength and stability.Therefore, the pitch
Having a extensive future for structure is overlayed, potential social and economic benefits are notable.
Brief description of the drawings
Fig. 1 is the structural representation of the asphalt overlaying structure suitable for old asphalt pavement overhaul engineering of the present invention.
The description of reference numerals of each element is as follows in figure：
1- upper layers；2- adhesion coatings；3- cutting optimals；4- sealings；Old asphalt pavement after 5- Comprehensive Treatments.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings.
Such as Fig. 1, a kind of asphalt overlaying structure suitable for old asphalt pavement overhaul engineering that the utility model is provided, including
Old asphalt pavement 5 after Comprehensive Treatment, Comprehensive Treatment mode is that milling spreads hot recycling compound, digging and crack treatment again；It is comprehensive
Close and sealing 4 is set on the old asphalt pavement 5 after punishment, sealing 4 uses SBS modified pitch synchronous surface dressings, and thickness is 1cm；
Asphalt surface course 1 and 3 is equipped with sealing 4, thickness is 10cm, is divided into upper layer 1 and cutting optimal 3, grain formula changes during cutting optimal 3 is used
Property bitumen A C-20C, thickness is 6cm；Upper layer 1, which is used, mixes white flock basalt fibre and grizzled particle shape lignin fibre
Geminal fibers asphalt, nominal of gathering materials maximum particle diameter be 13.2mm, thickness is 4cm；Set between upper layer 1 and cutting optimal 3
Adhesion coating 2 is put, adhesion coating 2 uses modified emulsifying asphalt.
Claims (1)
1. a kind of asphalt overlaying structure suitable for old asphalt pavement overhaul engineering, it is characterised in that including：After Comprehensive Treatment
Old asphalt pavement；Sealing is set on the old asphalt pavement after Comprehensive Treatment, and the sealing is sealed using SBS modified pitch synchronous breakstone
Layer, thickness is 1cm；Asphalt surface course is equipped with sealing, the thickness of bituminous surface is 10cm, is divided into upper layer and cutting optimal,
Grain formula modified pitch AC-20C during the cutting optimal is used, thickness is 6cm；The upper layer uses geminal fibers asphalt,
Nominal of gathering materials maximum particle diameter is 13.2mm, and thickness is 4cm；Adhesion coating is set between upper layer and cutting optimal, and the adhesion coating, which is used, to be changed
Property emulsified asphalt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621487606.3U CN206545144U (en) | 2016-12-30 | 2016-12-30 | Suitable for the asphalt overlaying structure of old asphalt pavement overhaul engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621487606.3U CN206545144U (en) | 2016-12-30 | 2016-12-30 | Suitable for the asphalt overlaying structure of old asphalt pavement overhaul engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206545144U true CN206545144U (en) | 2017-10-10 |
Family
ID=59993186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621487606.3U Expired - Fee Related CN206545144U (en) | 2016-12-30 | 2016-12-30 | Suitable for the asphalt overlaying structure of old asphalt pavement overhaul engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206545144U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110644322A (en) * | 2019-10-16 | 2020-01-03 | 四川齐峰建设工程有限公司 | Municipal road construction method |
-
2016
- 2016-12-30 CN CN201621487606.3U patent/CN206545144U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110644322A (en) * | 2019-10-16 | 2020-01-03 | 四川齐峰建设工程有限公司 | Municipal road construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171010 Termination date: 20181230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |