CN106567304A - Asphalt surface layer structure of highway - Google Patents
Asphalt surface layer structure of highway Download PDFInfo
- Publication number
- CN106567304A CN106567304A CN201610899099.2A CN201610899099A CN106567304A CN 106567304 A CN106567304 A CN 106567304A CN 201610899099 A CN201610899099 A CN 201610899099A CN 106567304 A CN106567304 A CN 106567304A
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- Prior art keywords
- aggregate
- modified pitch
- filler
- limestone
- compound
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to an asphalt surface layer structure of a highway. The structure is composed of an ultra-thin wearing layer having the thickness of 2-3cm and an intermediate layer having the thickness of 7-8cm. The ultra-thin wearing layer and the intermediate layer are well bonded. Compared with the traditional surface layer structure, the novel surface layer combination can maintain the good performance, as the thickness is smaller, the cost is lower, maintenance and repairing are convenient, and the long life cycle benefit is good.
Description
Technical field
The present invention relates to a kind of asphalt pavement structure, more particularly, to a kind of Bitumen pavement of expressway structure, it is adaptable to
Newly-built and reconstruction bituminous paving.
Background technology
China's asphalt pavement rut phenomenon is very universal, in the section more than heavy-duty vehicle, is drawn by shear stress in structure is excessive
The unstability type rut for rising is the principal mode of permanent deformation, and rut occurs mainly in layer and middle surface layer above in surface layer structure.
Therefore, the shear behavior of middle upper layer asphalt is most important for the performance of bituminous paving.
For a long time, the asphalt surface course of China's highway is generally divided into three layers, more than middle upper layer using 4cm upper layers+
Surface layer structure combination in 6cm, through many project application, this surface layer structure combination technique is ripe, stable performance.And drip at present
The maintenance on blue or green road surface, more by the way of milling upper layer and then covering, for this traditional surface layer structure is combined, because
Milling covering thickness is larger, and maintenance cost is higher, causes road surface overall cost of operation in life cycle higher.
The content of the invention
The purpose of the present invention be exactly in order to overcome defect that above-mentioned prior art is present and provide it is a kind of ensure evenness of road surface,
On the premise of stable, wear-resisting, antiskid, it is ensured that the excellent anti-rut behavior in road surface, the high speed of construction costs in life cycle is reduced
Highway asphalt surface layer structure.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of Bitumen pavement of expressway structure, by the centre that the ultra-thin wearing layer and thickness that thickness is 2-3cm is 7-8cm
Layer composition, sprays sticking layer oil between described ultra-thin wearing layer and intermediate layer.
Preferably, the thickness of described thin wearing course is 2.5cm, and the thickness in described intermediate layer is 7.5cm.
Preferably, the nominal maximum aggregate size of described ultra-thin wearing layer compound is 9.5mm, and compound makes raw material to be included
Modified pitch, coarse aggregate, fine aggregate, filler.The weight ratio of modified pitch, coarse aggregate, fine aggregate and filler is 4-7:42-80:
16-54:4-13.Wherein, described compound nominal maximum aggregate size 9.5mm, can be SMA-10, SAC-10, AC-10, UTAC-
10 grade compounds, described modified pitch are polymer modified asphalt, can be the modified pitch such as SBS classes, SBR classes, PE classes, institute
Basalt or diabase of the coarse aggregate stated for particle diameter 5-10mm and 3-5mm, described fine aggregate are the limestone of particle diameter 0-3mm
Machine-made Sand, described filler are limestone or the levigate breezes for obtaining of strong basis rock hydrophobicity building stones Jing in magmatic rock.
Preferably, the nominal maximum aggregate size 19mm of intermediate layer compound, compound makes raw material includes modified pitch, rough set
Material, fine aggregate, filler, the weight ratio of modified pitch, coarse aggregate, fine aggregate and filler is 4-6:44-74:19-53:3-7.Its
In, compound nominal maximum aggregate size is 19mm, can be the compounds such as SUP-20, AC-20, and modified pitch is that polymer modification is dripped
Green grass or young crops, can be the modified pitch such as SBS classes, SBR classes, PE classes, and coarse aggregate is the limestone of particle diameter 10-20mm, 5-10mm, 3-5mm,
Limestone of the fine aggregate for particle diameter 0-3mm, described filler are limestone or the strong basis rock hydrophobicity building stones in magmatic rock
The breeze that Jing is levigate to be obtained.
Described sticking layer oil is modified emulsifying asphalt sticking layer oil.
Compared with prior art, the novel surface structural grouping that the present invention is researched and developed, can reduce in life cycle
Construction costs, can be applicable to new pavement and reorganization and expansion road surface.Ultra-thin wearing layer compound has picture traditionally surface layer mixture
Equally good pavement performance, 2.5+7.5 express highway asphalt surface course structures combine the overall structure to be formed, by interior
Experimental study and Experiment Road on-the-spot test, with good anti-rut behavior.2.5+7.5 express highway asphalt surface course structures
Combination, ultra-thin wearing layer design thickness are thinner, keep in repair the stage, and milling covering thickness is thinner, more traditional surface layer structure integration engineering
Cost is lower, and cost performance is higher.The present invention is not changing road surface integral thickness, it is ensured that evenness of road surface, stable, wear-resisting, antiskid
Under the premise of, it is ensured that the anti-rut behavior on road surface, construction costs in life cycle is reduced, with good performance and economy
Advantage, makes novel surface structural grouping have the value of further genralrlization application.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
In figure, 1- ultra-thin wearing layers, 2- tack coats, 3- intermediate layers.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of 2.5+7.5 express highways surface layer structure combination that the present invention is provided, its structure is as shown in figure 1, the knot
Structure includes ultra-thin wearing layer 1, tack coat 2, middle surface layer 3 from top to bottom successively.
1 design thickness 2.5cm of ultra-thin wearing layer, using SMA-10 compounds, SBS modified pitch, each shelves mineral aggregate mass ratio
For 5-10mm diabases：3-5mm diabases：0-3 limestone：Limestone mineral powder=68:3:19:10, bitumen aggregate ratio 6.4% is wooden
Cellulose fiber volume 0.3% (mixing outward).SMA-10 formate gradation compositions are as follows：
1 SMA-10 formate gradation compositions of table
Tack coat 2 adopts SBS modified emulsifying asphalts, and spreading amount is 0.5kg/m2.
3 design thickness 7.5cm of middle surface layer, using AC-20 compounds, SBS modified pitch, each shelves mineral aggregate mass ratio are 10-
20mm limestone：5-10mm limestone：3-5mm limestone：0-3mm limestone：Limestone mineral powder=39:24：5:30:2, oilstone
Than 4.3%.AC-20 formate gradation compositions are as follows：
2 AC-20 formate gradation compositions of table
Embodiment, (upper layer 4cm thickness SMA-13 is mixed for molding novel surface structural grouping and traditional surface layer structure combination respectively
Close material, middle surface layer 6cm thickness AC-20 compounds) test specimen, indoor wheel tracking test and uniaxial penetration test are carried out, high-temperature stable is evaluated
Property, as a result as shown in table 3, table 4：
3 wheel tracking test result of table
Shaping test piece uniaxial penetration test result in table Room 4
The embodiment, making novel surface structural grouping and traditional surface layer structure composite entity engineering, live coring are entered
Row uniaxial penetration shear strength test, as a result as shown in table 5：
5 live coring uniaxial penetration test result of table
Embodiment Experiment Road, more traditional surface layer structure combination upper layer design thickness are thinner, when overlay is filled up in milling, consume
Material etc. is less.Consider from life cycle cost, if the analysis phase adopts 20 years, it is assumed that in 5 years, pavement disease is occurred over just above
Layer, upper layer milling was filled up in overlay, i.e. life cycle per 5 years carries out 4 upper layer millings overlay altogether.Novel surface structure
Combination and the combination milling of traditional surface layer structure and fill up thickness respectively 2.5cm and 4cm, in life cycle, do not consider the time into
In the case of this, general expenses rough estimate is as shown in table 6:
6 different surface layer structure combination expense computational charts of table
Embodiment 2
A kind of Bitumen pavement of expressway structure, by the intermediate layer group that the ultra-thin wearing layer and thickness that thickness is 2cm is 8cm
Into the spraying modified emulsified asphalt sticking layer oil between ultra-thin wearing layer and intermediate layer.
The nominal maximum aggregate size of ultra-thin wearing layer compound is 9.5mm, and compound making raw material is by modified pitch, rough set
Material, fine aggregate, filler are 4 by weight:42:16:4 mix.Wherein, modified pitch is birdsed of the same feather flock together compound modified pitch for SBS,
Basalt of the coarse aggregate for particle diameter 5mm and 3mm, fine aggregate are limestone machine-made sand of the particle diameter less than 3mm, and filler is limestone Jing
The levigate breeze for obtaining.
The nominal maximum aggregate size 19mm of intermediate layer compound, it is modified pitch, coarse aggregate, thin collection that compound makes raw material
Material, filler are 4 by weight:44:19:3 mix.Wherein, modified pitch is birdsed of the same feather flock together compound modified pitch for SBR, coarse aggregate
For the limestone of particle diameter 10mm, 5mm, 3mm, fine aggregate is limestone of the particle diameter less than 3mm, and filler is that limestone Jing is levigate to be obtained
Breeze.
Embodiment 3
A kind of Bitumen pavement of expressway structure, by the intermediate layer group that the ultra-thin wearing layer and thickness that thickness is 3cm is 7cm
Into the spraying modified emulsified asphalt sticking layer oil between ultra-thin wearing layer and intermediate layer.
The nominal maximum aggregate size of ultra-thin wearing layer compound is 9.5mm, and compound making raw material is by modified pitch, rough set
Material, fine aggregate, filler by weight 7:80:54:13 mix.Wherein, modified pitch is birdsed of the same feather flock together compound modified pitch for SBS,
Basalt of the coarse aggregate for particle diameter 10mm and 5mm, fine aggregate are limestone machine-made sand of the particle diameter less than 3mm, and filler is strong basis
Rock hydrophobicity building stones Jing the is levigate breeze for obtaining.
The nominal maximum aggregate size 19mm of intermediate layer compound, it is modified pitch, coarse aggregate, thin collection that compound makes raw material
Material, filler are 6 by weight:74:53:7 mix.Wherein, modified pitch is birdsed of the same feather flock together compound modified pitch for PE, and coarse aggregate is
The limestone of particle diameter 20mm, 10mm, 5mm, fine aggregate are limestone of the particle diameter less than 3mm, and filler is strong basis rock hydrophobicity
The breeze that building stones Jing is levigate to be obtained.
Embodiments of the invention are the foregoing is only, the scope of the claims of the present invention is not thereby limited, it is every using this
Equivalent structure or equivalent flow conversion that bright description and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (7)
1. a kind of Bitumen pavement of expressway structure, it is characterised in that the structure by thickness for 2-3cm ultra-thin wearing layer and thickness
The intermediate layer composition for 7-8cm is spent, needs to keep between described ultra-thin wearing layer and intermediate layer good bonding.
2. a kind of Bitumen pavement of expressway structure according to claim 1, it is characterised in that described thin wearing course
Thickness is 2.5cm, and the thickness in described intermediate layer is 7.5cm.
3. a kind of Bitumen pavement of expressway structure according to claim 1 and 2, it is characterised in that described ultra-thin mill
The nominal maximum aggregate size of consumption layer compound is 9.5mm, and making raw material includes modified pitch, coarse aggregate, fine aggregate and filler, described
Modified pitch, coarse aggregate, the weight ratio of fine aggregate and filler be 4-7:42-80:16-54:4-13.
4. a kind of Bitumen pavement of expressway structure according to claim 3, it is characterised in that
Described compound nominal maximum aggregate size 9.5mm, including SMA-10, SAC-10, AC-10 or UTAC-10 compound,
Described modified pitch is polymer modified asphalt, including SBS classes, SBR classes or PE class modified pitch,
Basalt or diabase of the described coarse aggregate for particle diameter 5-10mm and 3-5mm,
Described fine aggregate is limestone machine-made sand of the particle diameter less than 3mm,
Described filler is limestone or the levigate breezes for obtaining of strong basis rock hydrophobicity building stones Jing in magmatic rock.
5. a kind of Bitumen pavement of expressway structure according to claim 1 and 2, it is characterised in that described intermediate layer
The nominal maximum aggregate size of compound is 19mm, and compound makes raw material includes modified pitch, coarse aggregate, fine aggregate and filler, institute
The weight ratio of modified pitch, coarse aggregate, fine aggregate and the filler stated is 4-6:44-74:19-53:3-7.
6. a kind of Bitumen pavement of expressway structure according to claim 5, it is characterised in that
Described compound nominal maximum aggregate size 19mm, including SUP-20 or AC-20 compounds,
Described modified pitch is polymer modified asphalt, including SBS classes, SBR classes or PE class modified pitch,
Limestone of the described coarse aggregate for particle diameter 10-20mm, 5-10mm, 3-5mm,
Described fine aggregate is limestone of the particle diameter less than 3mm,
Described filler is limestone or the levigate breezes for obtaining of strong basis rock hydrophobicity building stones Jing in magmatic rock.
7. a kind of Bitumen pavement of expressway structure according to claim 1 and 2, it is characterised in that described sticking layer oil
For modified emulsifying asphalt sticking layer oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610899099.2A CN106567304A (en) | 2016-10-14 | 2016-10-14 | Asphalt surface layer structure of highway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610899099.2A CN106567304A (en) | 2016-10-14 | 2016-10-14 | Asphalt surface layer structure of highway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106567304A true CN106567304A (en) | 2017-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610899099.2A Pending CN106567304A (en) | 2016-10-14 | 2016-10-14 | Asphalt surface layer structure of highway |
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| CN (1) | CN106567304A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165016A (en) * | 2017-06-07 | 2017-09-15 | 广西交投科技有限公司 | The ultra-thin bituminous skidding resistant surface pavement structure of durability and construction method |
| CN108947335A (en) * | 2018-08-27 | 2018-12-07 | 华南理工大学 | A kind of super viscous noise reduction asphalt and super viscous noise reduction asphalt essence cover |
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| JP2001182006A (en) * | 1999-12-24 | 2001-07-03 | Nippon Nsc Ltd | Thin layer pavement material and execution work method therefor |
| CN103469714A (en) * | 2013-09-25 | 2013-12-25 | 广西国创道路材料有限公司 | Ultra-thin wearing course and construction method thereof |
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2016
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| JP2001182006A (en) * | 1999-12-24 | 2001-07-03 | Nippon Nsc Ltd | Thin layer pavement material and execution work method therefor |
| CN103469714A (en) * | 2013-09-25 | 2013-12-25 | 广西国创道路材料有限公司 | Ultra-thin wearing course and construction method thereof |
| CN204570411U (en) * | 2014-12-12 | 2015-08-19 | 西安盛祥公路工程有限公司 | A kind of flexible pavement |
| CN204898458U (en) * | 2015-09-02 | 2015-12-23 | 南京同安道路工程有限公司 | Antiskid noise-reduction road surface containing Novachip ultrathin wearing layer |
| CN205134129U (en) * | 2015-11-17 | 2016-04-06 | 江苏中路新材料科技发展有限公司 | Long -life road surface structure |
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| 曹卫东等: "密实型超薄沥青混合料的试验研究", 《中南公路工程》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165016A (en) * | 2017-06-07 | 2017-09-15 | 广西交投科技有限公司 | The ultra-thin bituminous skidding resistant surface pavement structure of durability and construction method |
| CN108947335A (en) * | 2018-08-27 | 2018-12-07 | 华南理工大学 | A kind of super viscous noise reduction asphalt and super viscous noise reduction asphalt essence cover |
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Application publication date: 20170419 |
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