CN106567304A - Asphalt surface layer structure of highway - Google Patents

Asphalt surface layer structure of highway Download PDF

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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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CN
China
Prior art keywords
aggregate
modified pitch
filler
limestone
compound
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.)
Pending
Application number
CN201610899099.2A
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Chinese (zh)
Inventor
孙立军
叶轩宇
吴后选
刘黎萍
邢成炜
王剑
吴迎宾
陈荣芬
金学勤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGXI GANYUE EXPRESSWAY CO Ltd
Tongji University
Original Assignee
JIANGXI GANYUE EXPRESSWAY CO Ltd
Tongji University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JIANGXI GANYUE EXPRESSWAY CO Ltd, Tongji University filed Critical JIANGXI GANYUE EXPRESSWAY CO Ltd
Priority to CN201610899099.2A priority Critical patent/CN106567304A/en
Publication of CN106567304A publication Critical patent/CN106567304A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00Coherent pavings made in situ
    • E01C7/08Coherent pavings made in situ made of road-metal and binders
    • E01C7/18Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02Macromolecular compounds
    • C04B26/26Bituminous materials, e.g. tar, pitch

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  • 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

A kind of Bitumen pavement of expressway structure
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.
CN201610899099.2A 2016-10-14 2016-10-14 Asphalt surface layer structure of highway Pending CN106567304A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
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

Citations (6)

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Publication number Priority date Publication date Assignee Title
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 It falls road surface of making an uproar to contain ultra -thin wearing and tearing of novachip layer cling compound
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
CN105970761A (en) * 2016-06-17 2016-09-28 江苏天诺道路材料科技有限公司 One-time pavement type heavy traffic pitch road surface structure and construction method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 It falls road surface of making an uproar to contain ultra -thin wearing and tearing of novachip layer cling compound
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
CN105970761A (en) * 2016-06-17 2016-09-28 江苏天诺道路材料科技有限公司 One-time pavement type heavy traffic pitch road surface structure and construction method

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Title
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)

* Cited by examiner, † Cited by third party
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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