CN105887610A - Heavy-load type durable asphalt composite structure - Google Patents
Heavy-load type durable asphalt composite structure Download PDFInfo
- Publication number
- CN105887610A CN105887610A CN201610390332.4A CN201610390332A CN105887610A CN 105887610 A CN105887610 A CN 105887610A CN 201610390332 A CN201610390332 A CN 201610390332A CN 105887610 A CN105887610 A CN 105887610A
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- Prior art keywords
- heavy
- layer
- load type
- composite construction
- colophonium
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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
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
-
- 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
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
- E01C7/325—Joining different layers, e.g. by adhesive layers; Intermediate layers, e.g. for the escape of water vapour, for spreading stresses
Abstract
The invention discloses a heavy-load type durable asphalt composite structure applicable to a 'changing white to black' project. The layered composite structure is arranged on an original pavement layer and comprises an upper surface layer, a second bonding layer, an intermediate layer, a first bonding layer, a lower surface layer and a stress absorption layer in sequence from top to bottom; the stress absorption layer is arranged on the upper surface of the original pavement layer. According to the heavy-load type durable asphalt composite structure, the upper surface layer made of rubber asphalt SMA13, the intermediate layer and the lower surface layer made of high-modulus EME are all capable of bear load well, and excellent track resistance is achieved; meanwhile, compared with a common asphalt mixture, the position of the upper surface layer, the position of the intermediate layer and the position of the lower surface layer are all high in stiffness modulus which is closer to the modulus of a cement concrete pavement, so that the entire deformation coordination capacity is unified, and it is helpful to prolong the entire structural service life of the pavement.
Description
Technical field
The present invention relates to a kind of road engineering reconstruction structure, particularly relate to a kind of heavy-load type durability Colophonium composite construction.
Background technology
Cement concrete pavement as a kind of high class pavement version, have higher intensity, stability, durability,
Flatness and roughness, maintenance cost is less simultaneously.The highway of various grade it is widely used in from the eighties in last century
In construction.But the increase of the time that is as being open to traffic, under the common effect of traffic load and environmental factors, cement concrete pavement
In succession occurring in that the pavement damages such as crack, faulting of slab ends, pit-hole, purt mud, serviceability significantly reduces.In order to ensure the good matter that is open to traffic
Amount, transforms existing cement concrete pavement, gradually replaces with asphalt concrete pavement structure, define PCC+HMA
Composite pavement structure.Although the defect of original water-setting concrete road surface can be overcome, but improved pavement structure by
In the discordance of up-down structure linking, causing stress can not unify with deformation, anti-heavy duty ability is poor.
Because the defect that above-mentioned existing heavy-load road structure exists, the present inventor is based on being engaged in this type of product design system
Make for many years abundant practical experience and Professional knowledge, and coordinate the utilization of scientific principle, the most in addition research and innovation, to founding one
Novel load-carrying type durability Colophonium composite construction so that it is have more practicality.Through constantly research, design, and through repeatedly trying
After making sample and improving, finally create the present invention having practical value.
Summary of the invention
Present invention is primarily targeted at, overcome the defect that existing heavy-load road structure exists, and provide a kind of and be suitable for
In the novel load-carrying type durability Colophonium composite construction of " changing black in vain " engineering, improve non-deformability, thus more suitable for practicality,
And there is the value in industry.
The object of the invention to solve the technical problems realizes by the following technical solutions.Propose according to the present invention
Heavy-load type durability Colophonium composite construction, former cement road surface layer arranges layered composite structure, layered composite construction
Include upper layer, the second adhesion coating, middle surface layer, the first adhesion coating, cutting optimal and stress absorbing layer, described stress the most successively
Absorbed layer is arranged on the upper surface of described former supercrust.
Further, aforesaid heavy-load type durability Colophonium composite construction, the thickness of described upper layer is 3.5-5cm,
Voidage is 3-6%.
Further, aforesaid heavy-load type durability Colophonium composite construction, the thickness of described middle surface layer is 5-7cm,
Voidage is 2-6%.
Further, aforesaid heavy-load type durability Colophonium composite construction, the thickness of described cutting optimal is 8-10cm, empty
Gap rate is 1-4%.
Further, aforesaid heavy-load type durability Colophonium composite construction, described first adhesion coating and the second adhesion coating are selected
Identical material, described first adhesion coating and the second adhesion coating are polymer modification emulsified asphalt.
Further, aforesaid heavy-load type durability Colophonium composite construction, described stress absorbing layer is close-graded AC05
Type asphalt, asphalt content is 8-10%, and the consumption gathered materials is 90～92%, described in the middle particle diameter that gathers materials be 2.36-
4.75mm consists of 88～92%, particle diameter be below 2.36mm consist of 8-12%.Cutting optimal and former cement-concrete road
Stress absorbing layer is set between face, effectively prevents and delay the reflection crack caused due to crack due to former cement concrete pavement
Phenomenon.
Further, aforesaid heavy-load type durability Colophonium composite construction, comprise in described upper layer gathers materials for brightness
One in greenstone or basalt fibers or a combination thereof, the nominal maximum aggregate size that gathers materials is 12.5mm.
Further, aforesaid heavy-load type durability Colophonium composite construction, comprise in described middle surface layer gathers materials for stone
Limestone, the nominal maximum aggregate size gathered materials is 14mm.
Further, aforesaid heavy-load type durability Colophonium composite construction, comprise in described cutting optimal gathers materials for stone
Limestone, the nominal maximum aggregate size gathered materials is 19.5mm.
Further, aforesaid heavy-load type durability Colophonium composite construction, the Colophonium used in described upper layer is cementing
Material adds to common petroleum Colophonium prepared for pre-swollen type rubberized asphalt pellets, and the consumption of common petroleum Colophonium is 4.5%-
5.5%, the consumption of pre-swollen type rubberized asphalt pellets is 1.5%-2.5%, and as preferred scheme, common petroleum Colophonium is selected
70# common petroleum Colophonium.
Further, middle surface layer and cutting optimal are respectively adopted high-modulus EME14 and EME20 level distribution structure, and EME14 uses
50# Colophonium+high-modulus agent, asphalt content is 4.5-5.0%；EME20 uses 15# hard grades of bitumen, and asphalt content is 4.2-
4.8%.
By technique scheme, the heavy-load type durability Colophonium composite construction of the present invention at least has the advantage that
The heavy-load type durability Colophonium composite construction that the present invention proposes, is during cement pavement makes bituminous paving into
Propose, improve the bituminous paving comprehensive pavement performance in the case of Heavy Traffic, use layered composite structure, wherein upper layer
Rubber asphalt SMA13, middle surface layer and cutting optimal high-modulus EME all can preferably undertake load, have the Rut resistance energy of excellence
Power；Meanwhile, upper layer, middle surface layer, the most layer by layer position are respectively provided with higher stiffness modulus compared with plain asphalt compound, with water
The modulus on cement concrete road surface closer to so that overall compatibility of deformation ability is the most unified, is conducive to extending the whole of road surface
Body structural life-time.
The stress absorbing layer arranged on former cement concrete pavement surface, it is possible to preferably delay due to former cement pavement
Disease produce reflection crack phenomenon, have simultaneously excellence water sealing effect, beneficially overall structure life-time dilatation, the fullest
The traffic status of the big flow heavy traffic of foot.
The heavy-load type durability Colophonium composite construction that the present invention proposes, the asphalt overlay of suitable depth provides frictional resistance system
The surface layer that number is high, flatness is good, original cement concrete pavement provides stable, solid foundation, meets Heavy Traffic
In the case of comprehensive pavement performance, improve road network the traffic capacity.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of description, after describing in detail such as with presently preferred embodiments of the present invention below.
Accompanying drawing explanation
Fig. 1 show heavy-load type durability Colophonium composite construction schematic diagram of the present invention；
Labelling connotation in figure: the most former supercrust, 2. stress absorbing layer, 3. cutting optimal, 4. the first adhesion coating, 5. in surface layer, 6.
Second adhesion coating, 7. upper layer.
Detailed description of the invention
By further illustrating the technological means and effect that the present invention taked by reaching predetermined goal of the invention, to according to this
Heavy-load type durability its detailed description of the invention of Colophonium composite construction, feature and effect thereof that invention proposes, after describing in detail such as.
Embodiment 1
The heavy-load type durability Colophonium composite construction schematic diagram of the present invention as shown in Figure 1, former supercrust 1, top also
It is provided with stress absorbing layer 2, cutting optimal the 3, first adhesion coating 4, middle surface layer the 5, second adhesion coating 6 and upper layer 7.
Wherein stress absorbing layer 2 is set directly at the upper surface of former supercrust 1, and stress absorbing layer 2 is the close of thickness 1.5cm
Grating AC05 structure, voidage is 1.5%, and wherein plain asphalt consumption is 8-10%, and the consumption gathered materials is 90-92%, gathers materials
Middle particle diameter is the 88-92% that consists of of 2.36-4.75mm, particle diameter be below 2.36mm consist of 8-12%.Below layer 3 with
Stress absorbing layer 2 is set between former cement concrete pavement layer, it is possible to effectively prevents and delays due to former cement concrete pavement
The reflection crack phenomenon caused due to crack, extends the military service cycle of new pavement structure.
Upper surface at stress absorbing layer 2 is provided with high-modulus EME20 cutting optimal 3, and THICKNESS CONTROL in 8cm, voidage is
About 2%；High-modulus EME20 cutting optimal 3 uses the compound of 15# hard grades of bitumen and limestone, and wherein asphalt content is
4.4%, the nominal maximum aggregate size gathered materials is 19.5mm, and the particle diameter gathered materials consists of: sieve aperture 26.5mm, percent of pass 100%；Sieve aperture
19mm, percent of pass 90～100%；Sieve aperture 16mm, percent of pass 78～92%；Sieve aperture 13.2mm, percent of pass 62～80%；Sieve aperture
9.5mm, percent of pass 50～72%；Sieve aperture 4.75mm, percent of pass 26～56%；Sieve aperture 2.36mm, percent of pass 16～44%；Sieve aperture
1.18mm, percent of pass 12～33%；Sieve aperture 0.6mm, percent of pass 8～24%；Sieve aperture 0.3mm, percent of pass 5～17%；Sieve aperture
0.075mm, percent of pass 3～7%.
The first adhesion coating 4, i.e. high-performance polymer modified emulsifying asphalt, technology it is provided with below between layer 3 and middle surface layer 5
Index is as shown in table 2.
Middle surface layer 5 is surface layer 5 in high-modulus EME14, thickness 6cm, and voidage is about 4%, uses 50# Colophonium+Gao Mo
Amount agent and the compound of limestone, wherein asphalt content is 5.0%, and high-modulus agent consumption is the 2-4% of all compounds, gathers materials
Nominal maximum aggregate size be 14mm.The particle diameter gathered materials consists of: sieve aperture 16mm, percent of pass 100%；Sieve aperture 13.2mm, percent of pass
90～100%；Sieve aperture 4.75mm, percent of pass 40～60%；Sieve aperture 2.36mm, percent of pass 25～38%；Sieve aperture 0.075mm is logical
Cross rate 6～8%.
The technology that high-modulus EME asphalt meets requires as shown in table 1 below.
Table 1 durability High Modulus Asphalt Mixture technology requirement
| Mixture performance | Technology requirement |
| Abundance coefficient | ≥3.4 |
| Voidage VV (%) | 1～4 |
| Freeze-thaw split strength ratio TSR (%) | ≥80 |
| France's wheel tracking test deformation rate (%) | ≤ 7.5 (30000 times) |
| GB wheel tracking test dynamic stability (secondary/mm) | ≥3000 |
| Low temperature girder failure strain (μ ε) | ≥1900 |
| 15 DEG C of ITSM modulus (MPa) | ≥15000 |
| 20 DEG C of ITSM modulus (MPa) | ≥12000 |
| 2 complex modulus (MPa) of 15 DEG C of 10HZ | ≥14000 |
| 10 DEG C of 25HZ, 2 fatigues 1,000,000 times (μ ε) | ≥130 |
Being provided with the second adhesion coating 6 between middle surface layer 5 and upper layer 7, i.e. high-performance polymer modified emulsifying asphalt, commercially available
Material, technical specification is as shown in table 3.
Upper layer 7 is pre-swollen type rubber asphalt SMA13, and thickness is 4cm, and voidage is 4%, the common stone of 70# of employing
The consumption of oil asphalt is 5%, and pre-swollen type rubberized asphalt pellets is 2%, wherein the composition bag of pre-swollen type rubberized asphalt pellets
Include silicon class activity breeze, rubber rubber powder, SBS modifier, plain asphalt, and relevant stable agent and additive are through a series of
The processing technique such as high temperature, dispersed with stirring, colloid mill grinding, passivation, granulating and forming process and form.Wherein gather materials and gather materials for diabase
Nominal maximum aggregate size is 12.5mm.Technical specification is as shown in table 2.The particle diameter gathered materials consists of: sieve aperture 16mm, percent of pass 100%；
Sieve aperture 13.2mm, percent of pass 90～100%；Sieve aperture 9.5mm, percent of pass 50～75%；Sieve aperture 4.75mm, percent of pass 22～
32%；Sieve aperture 2.36mm, percent of pass 16～27%；Sieve aperture 1.18mm, percent of pass 14～24%；Sieve aperture 0.6mm, percent of pass 12～
20%；Sieve aperture 0.3mm, percent of pass 10～16%；Sieve aperture 0.15mm, percent of pass 9～13%；Sieve aperture 0.075mm, percent of pass 8～
12%.This structure can provide the traffic capacity under big traffic flow, has high temperature rutting resistance and the coordination of excellence
Unified deformability.
The technology requirement of table 2 pre-swollen type rubberized asphalt pellets+plain asphalt
Table 3 high-performance polymer modified emulsifying asphalt technology requirement
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any technology people being familiar with this specialty
Member, in the range of without departing from technical solution of the present invention, when the technology contents of available the disclosure above makes a little change or modification
For the Equivalent embodiments of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit of the foundation present invention
Any simple modification, equivalent variations and the modification being made above example, all still falls within the range of technical solution of the present invention.
Claims (10)
1. a heavy-load type durability Colophonium composite construction, it is characterised in that: lamellar composite knot is set on former supercrust (1)
Structure, layered composite construction includes upper layer (7), the second adhesion coating (6), middle surface layer (5), the first adhesion coating the most successively
(4), cutting optimal (3) and stress absorbing layer (2), described stress absorbing layer (2) is arranged on the upper surface of described former supercrust (1).
Heavy-load type durability Colophonium composite construction the most according to claim 1, it is characterised in that: described upper layer (7)
Thickness is 3.5-5cm, and voidage is 3-6%.
Heavy-load type durability Colophonium composite construction the most according to claim 1, it is characterised in that: described middle surface layer (5)
Thickness is 5-7cm, and voidage is 2-6%.
Heavy-load type durability Colophonium composite construction the most according to claim 1, it is characterised in that: described cutting optimal (3)
Thickness is 8-10cm, and voidage is 1-4%.
Heavy-load type durability Colophonium composite construction the most according to claim 1, it is characterised in that: described first adhesion coating (4)
Selecting identical material with the second adhesion coating (6), described first adhesion coating (4) and the second adhesion coating (6) are polymer modification emulsified asphalt.
6. according to the heavy-load type durability Colophonium composite construction described in any one of claim 1 ~ 5, it is characterised in that: described stress
Absorbed layer (2) is close-graded AC05 type asphalt, and asphalt content is 8-10%, and the consumption gathered materials is 90 ~ 92%, described in gather materials
Middle particle diameter be 2.36-4.75mm consist of 88 ~ 92%, particle diameter be below 2.36mm consist of 8-12%.
Heavy-load type durability Colophonium composite construction the most according to claim 6, it is characterised in that: in described upper layer (7)
Comprise gathers materials for the one in diabase or basalt fibers or a combination thereof, and the nominal maximum aggregate size that gathers materials is 12.5mm.
Heavy-load type durability Colophonium composite construction the most according to claim 6, it is characterised in that: in described middle surface layer (5)
Comprise gathers materials for limestone, and the nominal maximum aggregate size gathered materials is 14mm.
Heavy-load type durability Colophonium composite construction the most according to claim 6, it is characterised in that: in described cutting optimal (3)
Comprise gathers materials for limestone, and the nominal maximum aggregate size gathered materials is 19.5mm.
Heavy-load type durability Colophonium composite construction the most according to claim 6, it is characterised in that: in described upper layer (7)
The bituminous cements used is that the interpolation of pre-swollen type rubberized asphalt pellets prepares to common petroleum Colophonium, common petroleum Colophonium
Consumption is 4.5%-5.5%, and the consumption of pre-swollen type rubberized asphalt pellets is 1.5%-2.5%.
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| CN201610390332.4A CN105887610A (en) | 2016-06-03 | 2016-06-03 | Heavy-load type durable asphalt composite structure |
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| CN201610390332.4A CN105887610A (en) | 2016-06-03 | 2016-06-03 | Heavy-load type durable asphalt composite structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106592369A (en) * | 2016-12-05 | 2017-04-26 | 扬州大学 | Highway heavy load asphalt pavement |
| CN106592370A (en) * | 2016-12-05 | 2017-04-26 | 扬州大学 | Drainability bituminous pavement |
| CN108129072A (en) * | 2017-12-10 | 2018-06-08 | 长沙无道工业设计有限公司 | It is a kind of suitable for the pitch on Heavy Traffic road surface and preparation method thereof |
| CN110184878A (en) * | 2019-06-17 | 2019-08-30 | 中交第三公路工程局有限公司 | Anti- rut splits asphalt concrete pavement structure |
| CN112573862A (en) * | 2020-12-14 | 2021-03-30 | 江苏一诺路桥工程检测有限公司 | Durable asphalt mixture based on high-modulus asphalt |
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| CN110184878A (en) * | 2019-06-17 | 2019-08-30 | 中交第三公路工程局有限公司 | Anti- rut splits asphalt concrete pavement structure |
| CN112573862A (en) * | 2020-12-14 | 2021-03-30 | 江苏一诺路桥工程检测有限公司 | Durable asphalt mixture based on high-modulus asphalt |
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