CN204940038U - Large Longitudinal Slope section anti-rutting asphalt road structure - Google Patents
Large Longitudinal Slope section anti-rutting asphalt road structure Download PDFInfo
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- CN204940038U CN204940038U CN201520544311.4U CN201520544311U CN204940038U CN 204940038 U CN204940038 U CN 204940038U CN 201520544311 U CN201520544311 U CN 201520544311U CN 204940038 U CN204940038 U CN 204940038U
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- Prior art keywords
- modified asphalt
- slope section
- longitudinal slope
- large longitudinal
- road structure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The utility model relates to a kind of Large Longitudinal Slope section anti-rutting asphalt road structure, comprises surface layer and framework compact type modified asphalt mixture cutting optimal in the ultra-thin wearing layer be laid on successively on Large Longitudinal Slope section, composite modified asphalt concrete upper layer, modified asphalt concrete from top to bottom; Tack coat is equipped with between surface layer and framework compact type modified asphalt mixture cutting optimal between ultra-thin wearing layer and composite modified asphalt concrete upper layer and in modified asphalt concrete; In composite modified asphalt concrete upper layer and modified asphalt concrete, the surface layer compacting simultaneously that simultaneously paves forms deck jointly; Bituminous concrete stiffened panel is provided with in deck.The utility model provides a kind of anti-rutting asphalt road structure being applicable to Large Longitudinal Slope section, solves Large Longitudinal Slope section asphalt pavement rut disease, extends Road Service Life, reduces the maintenance cost of road, improves traffic safety.
Description
Technical field
The utility model belongs to field of road, relates to a kind of asphalt pavement structure, particularly relates to a kind of Large Longitudinal Slope section anti-rutting asphalt road structure.
Background technology
2004 the end of the year Ministry of Communications put into effect " national expressway network planning " " 7918 net " of determining Highway Construction in Mountainous Area is welcome new peak.In Highway Construction in Mountainous Area, river, Freeway of Mountain Range, mountain range are numerous, and road alignment is relatively poor, and this makes road consider Pavement Condition and security performance more while building up fast, and rut is undoubtedly the serious problems that mountainous area highway faces.Investigation finds, the serious region of same speedway rut is all at long steep slope road section, this is because heavy-duty vehicle is generally 10 ~ 20km/h in the speed in section, hillside, according to rheol universal law application of temperature and the conversion rule of time, long-time bearing load and hot conditions equivalence.Meanwhile, the increase of the gradient, the lateral shear effect that vehicle road pavement produces increases thereupon, accelerates the generation of road surface permanent deformation.Therefore, how to improve long abrupt slope flexible pavement mechanical state, thus to improve road surface anti-rut behavior be to a certain extent the current problem that cannot avoid.
Utility model content
The purpose of this utility model is to provide a kind of anti-rutting asphalt road structure being applicable to Large Longitudinal Slope section, solves Large Longitudinal Slope section asphalt pavement rut disease, extends Road Service Life, reduces the maintenance cost of road, improves traffic safety.
The purpose of this utility model is achieved through the following technical solutions:
A kind of Large Longitudinal Slope section anti-rutting asphalt road structure, is characterized in that: described Large Longitudinal Slope section anti-rutting asphalt road structure comprises surface layer and framework compact type modified asphalt mixture cutting optimal in the ultra-thin wearing layer be laid on successively on Large Longitudinal Slope section, composite modified asphalt concrete upper layer, modified asphalt concrete from top to bottom; Tack coat is equipped with between surface layer and framework compact type modified asphalt mixture cutting optimal between described ultra-thin wearing layer and composite modified asphalt concrete upper layer and in modified asphalt concrete; In described composite modified asphalt concrete upper layer and modified asphalt concrete, the surface layer compacting simultaneously that simultaneously paves forms deck jointly; Bituminous concrete stiffened panel is provided with in described deck.
As preferably, the bituminous concrete stiffened panel that the utility model adopts is rectangular thin plate; The thickness of described bituminous concrete stiffened panel is not less than 2mm.
As preferably, the bituminous concrete stiffened panel that the utility model adopts is arranged in deck, and its long limit is vertical with road surface running vehicle direction, and its broadside, perpendicular to the earth horizontal plane, is acute angle with road surface; Described bituminous concrete stiffened panel is polylith, and the distance between adjacent two pieces of bituminous concrete stiffened panels is no more than 2m.
As preferably, the ultra-thin wearing layer that the utility model adopts adopts small particle diameter, many rubbles and gap gradation bituminous mixture; The nominal maximum aggregate size of described ultra-thin wearing layer is 9.5mm; Described ultra-thin wearing layer thickness is not more than 20mm.
As preferably, the composite modified asphalt concrete upper layer that the utility model adopts adopts AC-13C type grating; The thickness of described composite modified asphalt concrete upper layer is not more than 50mm.
As preferably, in the modified asphalt concrete that the utility model adopts, surface layer adopts AC-20C type grating; In described modified asphalt concrete, the thickness of surface layer is not more than 70mm.
As preferably, the framework compact type modified asphalt mixture cutting optimal that the utility model adopts adopts grating AC-25C; Described framework compact type modified asphalt mixture cutting optimal thickness is 100 ~ 150mm.
As preferably, the tack coat that the utility model adopts is SBS modified emulsifying asphalt tack coat; The spreading amount of described tack coat is 0.3 ~ 0.6L/m
2.
Compared with the asphalt pavement structure in common section, Large Longitudinal Slope section provided by the utility model anti-rutting asphalt road structure has three features:
(1) the compacting while that upper layer and middle surface layer adopting Double Layer Paving Technique to pave simultaneously, strengthen the contact of road structure interlayer, avoid longitudinal gradient section, road structure interlayer shear stress is excessive and cause deck to throw off, and bearing capacity of pavement structure is not enough.
(2) upper layer and middle surface layer use bituminous concrete stiffened panel reinforcement, enhance the shear behavior of ground surface material, avoid rut, pass, gather around the generation of the diseases such as bag.
(3) road structure in common section often adopts bilayer modified technology, and namely upper layer and middle surface layer adopt modified asphalt concrete.The utility model Large Longitudinal Slope section road structure adopts three layers of modification technology, strengthens the anti-rut behavior of road structure entirety.
(4) ultra-thin wearing layer solves the problem that bituminous concrete stiffened panel is appeared, and ensure that evenness of road surface.
Large Longitudinal Slope section provided by the utility model anti-rutting asphalt road structure effectively can solve Large Longitudinal Slope section asphalt pavement rut disease, improve the quality of flexible pavement comprehensively, extend application life, decrease the number of times of pavement maintenance and maintenance, reduce maintenance cost.
Accompanying drawing explanation
Fig. 1 is Large Longitudinal Slope section disclosed in the utility model anti-rutting asphalt road structure schematic diagram;
Wherein:
1-ultra-thin wearing layer; 2-composite modified asphalt concrete upper layer; Surface layer in 3-modified asphalt concrete; 4-framework compact type modified asphalt mixture cutting optimal; 5-bituminous concrete stiffened panel; 6-tack coat; 7-sub-surface; 8-bed course; 9-roadbed.
Detailed description of the invention
Now in conjunction with the accompanying drawings and embodiments the utility model is further described, but the utility model is not limited only to following embodiment.
See Fig. 1, the utility model discloses a kind of Large Longitudinal Slope section anti-rutting asphalt road structure, comprise ultra-thin wearing layer 1 successively from top to bottom, composite modified asphalt concrete upper layer 2, surface layer 3 in modified asphalt concrete, framework compact type modified asphalt mixture cutting optimal 4.Flexible pavement upper layer 2 and middle surface layer 3 pave simultaneously, compacting simultaneously, are formed and connect intact deck, and wherein with the direction filled bitumen concrete stiffened panel 5 perpendicular to the earth horizontal plane; Bituminous concrete stiffened panel 5 is polyliths, and the distance between adjacent two pieces of bituminous concrete stiffened panels 5 is no more than 2m.Tack coat 6 is all adopted to be connected between surface layer 3 and framework compact type modified asphalt mixture cutting optimal 4 between ultra-thin wearing layer 1 with composite modified asphalt concrete upper layer 2 and in modified asphalt concrete.Bituminous concrete stiffened panel 5 is arranged in deck, and its long limit is vertical with road surface running vehicle direction, and its broadside, perpendicular to the earth horizontal plane, is acute angle with road surface.The below of framework compact type modified asphalt mixture cutting optimal 4 from top to bottom successively road surface pavement basic unit 7 and bed course 8 on roadbed 9.
Ultra-thin wearing layer 1, adopt small particle diameter, many rubbles, gap gradation bituminous mixture, nominal maximum aggregate size is 9.5mm, SBS modified bitumen, and thickness is 20mm.
Composite modified asphalt concrete upper layer 2, adopt AC-13C type grating, SBS modified bitumen, the anti-rut agent of 0.3%, thickness is 50mm.
Surface layer 3 in modified asphalt concrete, adopt AC-20C type grating, 0.4% anti-rut agent, thickness is 70mm.
In composite modified asphalt concrete upper layer 2 and modified asphalt concrete surface layer 3 pave simultaneously, compacting simultaneously, formed and connect intact deck, and wherein with the direction filled bitumen concrete stiffened panel 5 perpendicular to the earth horizontal plane.
Bituminous concrete stiffened panel 5 is rectangular thin plate, and thickness is 2mm.
Wherein, bituminous concrete stiffened panel 5 can be made up of the raw material of following mass fraction or other sheet materials or other known materials prepare according to the processing technology of prior art:
Embodiment one:
To prepare bituminous concrete stiffened panel quality for 1000g, other raw materials and quality composed as follows:
Regenerated polythene 500g;
Glass fiber 200g;
Polyester fiber 100g;
Tackifier 50g;
Crosslinking agent 20g;
French chalk 100g;
Mineral matter 30g.
Embodiment two:
To prepare bituminous concrete stiffened panel quality for 1000g, other raw materials and quality composed as follows:
Regenerated polythene 300g;
Glass fiber 200g;
Polyester fiber 250g;
Tackifier 70g;
Crosslinking agent 50g;
French chalk 120g;
Mineral matter 10g.
Embodiment three:
To prepare bituminous concrete stiffened panel quality for 1000g, other raw materials and quality composed as follows:
Regenerated polythene 400g;
Glass fiber 300g;
Polyester fiber 100g;
Tackifier 30g;
Crosslinking agent 20g;
French chalk 100g;
Mineral matter 50g.
The preparation method of bituminous concrete stiffened panel mentioned in above-described embodiment is: according to the proportion by weight of above-mentioned raw materials, by regenerated polythene, glass fiber, polyester fiber, tackifier, French chalk, mineral matter, 215 ~ 225 DEG C of meltings, 10 ~ 20min is stirred with 3500rpm rotating speed cutting, then add crosslinking agent, at 215 ~ 225 DEG C, stir 10min with 2500rpm rotating speed cutting.Carry out mold pressing subsequently, mold pressing parameter is: temperature 185 ~ 195 DEG C, and pressure is 200 ~ 500kg/cm
2, and take out after pressurize 10min, obtain bituminous concrete stiffened panel.
Framework compact type modified asphalt mixture cutting optimal 4, adopt grating AC-25C, 0.2% anti-rut agent, thickness is 100 ~ 150mm.Tack coat 6 adopts SBS modified emulsifying asphalt, and spreading amount is 0.3 ~ 0.6L/m
2; The integrative-structure layer that in composite modified asphalt concrete upper layer 2 and modified asphalt concrete, surface layer 3 is formed is connected with SBS modified emulsifying asphalt adhesion coating 6 with between framework compact type modified asphalt mixture cutting optimal 4, is connected with SBS modified emulsifying asphalt adhesion coating 6 with between ultra-thin wearing layer.
Claims (8)
1. a Large Longitudinal Slope section anti-rutting asphalt road structure, is characterized in that: described Large Longitudinal Slope section anti-rutting asphalt road structure comprises surface layer (3) and framework compact type modified asphalt mixture cutting optimal (4) in the ultra-thin wearing layer (1) be laid on successively on Large Longitudinal Slope section, composite modified asphalt concrete upper layer (2), modified asphalt concrete from top to bottom; Tack coat (6) is equipped with between surface layer (3) and framework compact type modified asphalt mixture cutting optimal (4) between described ultra-thin wearing layer (1) and composite modified asphalt concrete upper layer (2) and in modified asphalt concrete; In described composite modified asphalt concrete upper layer (2) and modified asphalt concrete, surface layer (3) compacting simultaneously that simultaneously paves forms deck jointly; Bituminous concrete stiffened panel (5) is provided with in described deck.
2. Large Longitudinal Slope section according to claim 1 anti-rutting asphalt road structure, is characterized in that: described bituminous concrete stiffened panel (5) is vertically arranged in deck; Described bituminous concrete stiffened panel (5) is polylith, and the distance between adjacent two pieces of bituminous concrete stiffened panels (5) is no more than 2m.
3. Large Longitudinal Slope section according to claim 2 anti-rutting asphalt road structure, is characterized in that: described bituminous concrete stiffened panel (5) is rectangular slab; The thickness of described bituminous concrete stiffened panel (5) is not less than 2mm.
4. the Large Longitudinal Slope section anti-rutting asphalt road structure according to claim 1 or 2 or 3, is characterized in that: described ultra-thin wearing layer (1) adopts small particle diameter, many rubbles and gap gradation bituminous mixture; The nominal maximum aggregate size of described ultra-thin wearing layer (1) is 9.5mm; Described ultra-thin wearing layer (1) thickness is not more than 20mm.
5. Large Longitudinal Slope section according to claim 4 anti-rutting asphalt road structure, is characterized in that: described composite modified asphalt concrete upper layer (2) adopts AC-13C type grating; The thickness of described composite modified asphalt concrete upper layer (2) is not more than 50mm.
6. Large Longitudinal Slope section according to claim 5 anti-rutting asphalt road structure, is characterized in that: in described modified asphalt concrete, surface layer (3) adopts AC-20C type grating; In described modified asphalt concrete, the thickness of surface layer (3) is not more than 70mm.
7. Large Longitudinal Slope section according to claim 6 anti-rutting asphalt road structure, is characterized in that: described framework compact type modified asphalt mixture cutting optimal (4) adopts grating AC-25C; Described framework compact type modified asphalt mixture cutting optimal (4) thickness is 100 ~ 150mm.
8. Large Longitudinal Slope section according to claim 7 anti-rutting asphalt road structure, is characterized in that: described tack coat (6) is SBS modified emulsifying asphalt tack coat; The spreading amount of described tack coat (6) is 0.3 ~ 0.6L/m
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520544311.4U CN204940038U (en) | 2015-07-24 | 2015-07-24 | Large Longitudinal Slope section anti-rutting asphalt road structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520544311.4U CN204940038U (en) | 2015-07-24 | 2015-07-24 | Large Longitudinal Slope section anti-rutting asphalt road structure |
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| Publication Number | Publication Date |
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| CN204940038U true CN204940038U (en) | 2016-01-06 |
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| CN201520544311.4U Expired - Fee Related CN204940038U (en) | 2015-07-24 | 2015-07-24 | Large Longitudinal Slope section anti-rutting asphalt road structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105040544A (en) * | 2015-07-24 | 2015-11-11 | 山西省交通科学研究院 | Large longitudinal slope section anti-track asphalt pavement structure |
-
2015
- 2015-07-24 CN CN201520544311.4U patent/CN204940038U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105040544A (en) * | 2015-07-24 | 2015-11-11 | 山西省交通科学研究院 | Large longitudinal slope section anti-track asphalt pavement structure |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20190724 |
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| CF01 | Termination of patent right due to non-payment of annual fee |