CN205152746U - Combined type long -life bituminous pavement structure - Google Patents
Combined type long -life bituminous pavement structure Download PDFInfo
- Publication number
- CN205152746U CN205152746U CN201520818807.6U CN201520818807U CN205152746U CN 205152746 U CN205152746 U CN 205152746U CN 201520818807 U CN201520818807 U CN 201520818807U CN 205152746 U CN205152746 U CN 205152746U
- Authority
- CN
- China
- Prior art keywords
- layer
- asphalt
- combined type
- basic unit
- cement concrete
- 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.)
- Expired - Fee Related
Links
Landscapes
- Road Paving Structures (AREA)
Abstract
The utility model discloses a combined type long -life bituminous pavement structure from bottom to top includes underlayment, basic unit, pitch isolation layer, cement concrete layer, stress absorbing layer, modified asphalt layer in proper order. The utility model discloses a modified asphalt mastic rubble mixture effectively strengthens the road surface wearability as the wearing and tearing layer, improves the road surface cling property, reduces the impact of driving load to the cement concrete layer, adopt the cement concrete layer as main bearing layer, effectively improve bearing layer the fatigue performance can, reduce bearing layer's fracture, set up the pitch isolation layer, will effectively improve contact condition between cement concrete layer and the basic unit, play the springiness cushioning effect, reduce the fracture of cement concrete panel and the fracture of basic unit, can prevent rainwater infiltration to basic unit, avoid the basic unit to receive water -washed brush, extension basic unit useful life longevity. The road surface structure is coupled hardness with softness, has complementary advantages, and effective prevention and the reflective cracking who reduces cement concrete layer asphalt overlay effectively prolong road surface life.
Description
Technical field
The utility model relates to road structure studying technological domain, particularly relates to a kind of combined type Perpetual Pavements Structural.
Background technology
Long Life Pavement is a kind of perpetual pavement structure, and its pavement life is 35 years ~ 50 years.Long Life Pavement need to guarantee road surface within service life not recurring structure destroy, only need carry out periodically maintenance or change the asphalt uplayer producing and damage.The primary construction investment of Long Life Pavement is comparatively large, but maintenance cost is low, and whole life cycle economy is best.Long Life Pavement arranges road surface structare layer by functional requirement, wearing layer requires to have Rut resistance, abrasion resisting and fluid-tight ability, binder course has good Rut resistance damage capability and eliminates the effect of part shear stress, and basic unit has antifatigue and durable ability.
In order to realize the long-life of pavement usage, generally realizing by strengthening road structure layer thickness or increasing deck intensity, but will certainly construction costs be increased like this.In order to make up the too large problem of Long Life Pavement initial investment, increasing Long Life Pavement adopts composite pavement structure, gives full play to flexible pavement and rigid pavement performance advantage separately, is reasonably combined by flexible pavement with rigid pavement.
Utility model content
For above-mentioned technical problem, the utility model proposes a kind of combined type Perpetual Pavements Structural, its technical scheme adopted is as follows:
A kind of combined type Perpetual Pavements Structural, from bottom to top comprises subbase, basic unit, pitch separation layer, cement concrete layer, stress absorbing layer, modified asphalt layer successively.
Further, described modified asphalt layer is modified stone mastic asphalt compound SMA-13 or SMA-16, stone mastic asphalt contains more coarse aggregate, the mutual embedded squeezing of coarse aggregate forms the cage construction of high stability, together with fine aggregate, breeze, pitch are cementing by skeleton with fiber stabilizer composition matizhi, fill skeleton space, make compound have good high-temperature stability and durability.
Further, the high-temperature behavior of described modified asphalt layer is classified as PG76 or PG82.
Further, described stress absorbing layer adopts thickness is the slurry seal of 1cm ~ 3cm, thickness is 2cm ~ 3cm STRATA layer or thickness to be the modified asphalt macadam layer of 1cm ~ 1.5cm, cement-concrete road joint place easily produces stress and concentrates, between cement concrete layer and modified asphalt layer, stress absorbing layer is set, the stress of modified asphalt layer bottom surface or strain can be made to depart from the concentrated place of cement concrete pavement stress, also reduce tensile stress at the bottom of layer and the shear stress of modified asphalt layer, effectively the reflection crack of prevention and minimizing bituminous texture layer simultaneously.
Further, the modified bitumen in described modified asphalt macadam layer is SBS modified bitumen, rubber asphalt or natural asphalt modified bitumen.
Further, the flexural tensile strength of described cement concrete layer be 5.0MPa and more than, the thickness of described cement concrete layer is 24cm ~ 28cm.
Further, described pitch separation layer adopts Asphalt Stabilized Macadam layer or asphalt concrete layer, and the thickness of described pitch separation layer is 5cm ~ 10cm.
Further, described Asphalt Stabilized Macadam is ATB-25 type compound or ATB-30 type compound, and the thickness of described Asphalt Stabilized Macadam layer is 8cm ~ 10cm; Described asphalt concrete layer is AC-20 type or AC-25 type dense-graded asphalt concrete, and the thickness of described asphalt concrete layer is 5cm ~ 8cm.
Further, described basic unit adopts cement stabilized grading crushed stones, and the thickness of described basic unit is 15cm ~ 36cm.
Further, described subbase is cement stabilizing aggregate chips, and the thickness of described subbase is 15cm ~ 20cm.
Compared with prior art, the beneficial effects of the utility model specifically exist:
1, the utility model adopts modified stone mastic asphalt compound as wearing layer, effectively strengthens road surface abrasion resistance, improves pavement skid resistance condition, reduces traffic load to the percussion of cement concrete layer; Adopt cement concrete layer as main bearing course, effectively improve the fatigue behaviour of bearing course, reduce the cracking of bearing course.
2, pitch separation layer is set, will effectively improves contact condition between cement concrete layer and basic unit, and play elastic buffer effect, reduce the fracture of cement concrete slab and the cracking of basic unit.
3, the utility model road structure can prevent rainwater infiltration to basic unit, avoids basic unit to be subject to water and washes away, and extends basic unit's useful life longevity.
4, the utility model road structure is coupled hardness with softness, and has complementary advantages, effectively the reflection crack of prevention and minimizing cement concrete layer asphalt overlay, effective prolonging service life of pavement.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of combined type Perpetual Pavements Structural of the utility model embodiment.
Shown in figure be: 1-subbase; 2-basic unit; 3-pitch separation layer; 4-cement concrete layer; 5-stress absorbing layer; 6-modified asphalt layer.
Detailed description of the invention
Be described in further detail the purpose of this utility model below by specific embodiment, embodiment can not repeat one by one at this, but therefore the utility model is not defined in following examples with the concrete embodiment implementing utility model by reference to the accompanying drawings.
embodiment 1
As shown in Figure 1, a kind of combined type Perpetual Pavements Structural, from bottom to top comprises subbase 1, basic unit 2, pitch separation layer 3, cement concrete layer 4, stress absorbing layer 5, modified asphalt layer 6 successively.Described modified asphalt layer 6 is the modified stone mastic asphalt compound SMA-13 that 4cm is thick, and the high-temperature behavior of modified asphalt layer 6 modified bitumen used is classified as PG82.Described stress absorbing layer 5 is the slurry seal that 1.5cm is thick.Described cement concrete layer 4 is the thick flexural tensile strength of 26cm is the cement concrete of 5.0MPa.Described pitch separation layer 3 is 10cm thick ATB-30 type Asphalt Stabilized Macadam.Described basic unit 2 stablizes graded broken stone for 20cm solid cement, and described cement stabilized grading crushed stones is formed by following raw material mix by weight percentage, and cement 5.5%, gathers materials 88.2%, water 6.3%.Described subbase 1 stablizes aggregate chips for 15cm solid cement, and described cement stabilizing aggregate chips is formed by following raw material mix by weight percentage, and cement 4.0%, gathers materials 90.6%, water 5.4%.
embodiment 2
As shown in Figure 1, a kind of combined type Perpetual Pavements Structural, from bottom to top comprises subbase 1, basic unit 2, pitch separation layer 3, cement concrete layer 4, stress absorbing layer 5, modified asphalt layer 6 successively.Described modified asphalt layer 6 is the modified stone mastic asphalt compound SMA-16 that 6cm is thick, and the high-temperature behavior of modified asphalt layer 6 modified bitumen used is classified as PG76.Described stress absorbing layer 5 is the modified asphalt macadam layer that 1cm is thick.Described cement concrete layer 4 is the thick flexural tensile strength of 28cm is the cement concrete of 5.0MPa.Described pitch separation layer 3 is 8cm thick ATB-25 type Asphalt Stabilized Macadam.Described basic unit 2 stablizes graded broken stone for 15cm solid cement, and described cement stabilized grading crushed stones is formed by following raw material mix by weight percentage, and cement 5.0%, gathers materials 88.5%, water 6.5%.Described subbase 1 stablizes aggregate chips for 20cm solid cement, and described cement stabilizing aggregate chips is formed by following raw material mix by weight percentage, and cement 3.5%, gathers materials 91.7%, water 4.8%.
embodiment 3
As shown in Figure 1, a kind of combined type Perpetual Pavements Structural, from bottom to top comprises subbase 1, basic unit 2, pitch separation layer 3, cement concrete layer 4, stress absorbing layer 5, modified asphalt layer 6 successively.Described modified asphalt layer 6 is the modified stone mastic asphalt compound SMA-16 that 5cm is thick, and the high-temperature behavior of modified asphalt layer 6 modified bitumen used is classified as PG82.Described stress absorbing layer 5 is the STRATA layer that 2cm is thick.Described cement concrete layer 4 is the thick flexural tensile strength of 24cm is the cement concrete of 5.5MPa.Described pitch separation layer 3 is 6cm thick AC-25 type dense-graded asphalt concrete.Described basic unit 2 stablizes graded broken stone for 36cm solid cement, and described cement stabilized grading crushed stones is formed by following raw material mix by weight percentage, and cement 6.0%, gathers materials 86.9%, water 7.1%.Described subbase 1 stablizes aggregate chips for 18cm solid cement, and described cement stabilizing aggregate chips is formed by following raw material mix by weight percentage, and cement 4.5%, gathers materials 89.8%, water 5.7%.
Above-described embodiment is only the utility model patent preferred embodiment, but the protection domain of the utility model patent is not limited thereto.Anyly be familiar with those skilled in the art in the scope disclosed in the utility model patent, be equal to according to the technical scheme of the utility model patent and utility model design thereof and replace or change, all belong to the protection domain of the utility model patent.
Claims (10)
1. a combined type Perpetual Pavements Structural, is characterized in that: from bottom to top comprise subbase (1), basic unit (2), pitch separation layer (3), cement concrete layer (4), stress absorbing layer (5), modified asphalt layer (6) successively.
2. combined type Perpetual Pavements Structural according to claim 1, is characterized in that: described modified asphalt layer (6) is modified stone mastic asphalt compound SMA-13 or SMA-16.
3. combined type Perpetual Pavements Structural according to claim 2, is characterized in that: the high-temperature behavior of described modified asphalt layer (6) modified bitumen used is classified as PG76 or PG82.
4. combined type Perpetual Pavements Structural according to claim 1, is characterized in that: described stress absorbing layer (5) employing thickness is the slurry seal of 1cm ~ 3cm, thickness is the STRATA layer of 2cm ~ 3cm or the modified asphalt macadam layer of 1cm ~ 1.5cm.
5. combined type Perpetual Pavements Structural according to claim 4, is characterized in that: the modified bitumen in described modified asphalt macadam layer is SBS modified bitumen, rubber asphalt or natural asphalt modified bitumen.
6. combined type Perpetual Pavements Structural according to claim 1, it is characterized in that: the flexural tensile strength of described cement concrete layer (4) be 5.0MPa and more than, the thickness of described cement concrete layer (4) is 24cm ~ 28cm.
7. combined type Perpetual Pavements Structural according to claim 1, it is characterized in that: described pitch separation layer (3) adopts Asphalt Stabilized Macadam layer or asphalt concrete layer, and the thickness of described pitch separation layer (3) is 5cm ~ 10cm.
8. combined type Perpetual Pavements Structural according to claim 7, is characterized in that: described Asphalt Stabilized Macadam is ATB-25 type compound or ATB-30 type compound, and the thickness of described Asphalt Stabilized Macadam layer is 8cm ~ 10cm; Described asphalt concrete layer is AC-20 type or AC-25 type dense-graded asphalt concrete, and the thickness of described asphalt concrete layer is 5cm ~ 8cm.
9. combined type Perpetual Pavements Structural according to claim 1, is characterized in that: described basic unit (2) adopts cement stabilized grading crushed stones, and the thickness of described basic unit (2) is 15cm ~ 36cm.
10. combined type Perpetual Pavements Structural according to claim 1, is characterized in that: described subbase (1) is cement stabilizing aggregate chips, and the thickness of described subbase (1) is 15cm ~ 20cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520818807.6U CN205152746U (en) | 2015-10-22 | 2015-10-22 | Combined type long -life bituminous pavement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520818807.6U CN205152746U (en) | 2015-10-22 | 2015-10-22 | Combined type long -life bituminous pavement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205152746U true CN205152746U (en) | 2016-04-13 |
Family
ID=55688459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520818807.6U Expired - Fee Related CN205152746U (en) | 2015-10-22 | 2015-10-22 | Combined type long -life bituminous pavement structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205152746U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165012A (en) * | 2017-06-15 | 2017-09-15 | 上海建工四建集团有限公司 | The road structure and its construction method of a kind of tunnel upper |
| CN108660889A (en) * | 2018-08-17 | 2018-10-16 | 山东省交通科学研究院 | A kind of energy-saving environment protection asphalt pavement structure |
| CN114059412A (en) * | 2021-12-10 | 2022-02-18 | 广东冠粤路桥有限公司 | Novel road and construction method thereof |
-
2015
- 2015-10-22 CN CN201520818807.6U patent/CN205152746U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165012A (en) * | 2017-06-15 | 2017-09-15 | 上海建工四建集团有限公司 | The road structure and its construction method of a kind of tunnel upper |
| CN108660889A (en) * | 2018-08-17 | 2018-10-16 | 山东省交通科学研究院 | A kind of energy-saving environment protection asphalt pavement structure |
| CN114059412A (en) * | 2021-12-10 | 2022-02-18 | 广东冠粤路桥有限公司 | Novel road and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204097825U (en) | The reinforced Flexible Pavement Structure used under a kind of extra heavy overload condition | |
| CN103215875B (en) | A kind of anti-fatigue asphalt pavement based on differential settlement | |
| CN205152746U (en) | Combined type long -life bituminous pavement structure | |
| CN101092808A (en) | Stress absorption structured llayer of discontinuous ajar particle distribution limit mixture for asphaltum with high viscosity | |
| CN204370308U (en) | The ultra-thin composite paved Rotating fields of a kind of Steel Bridge Deck polymer | |
| CN103498399A (en) | Novel asphalt concrete pavement structure | |
| CN103288385B (en) | Expansion joint material for bridge and expansion joint structure | |
| CN102051848B (en) | HMA/CC (Hot-Mix Asphalt)/(Cement Concrete) composite type pavement structure and constructing method thereof | |
| CN203514144U (en) | Asphalt concrete pavement structure for plateau area | |
| CN205171301U (en) | Bituminous pavement structure of big flexible basic unit of particle diameter water permeability bituminous mixture | |
| CN204385577U (en) | A kind of deck installation structure | |
| CN210712412U (en) | Asphalt pavement structure | |
| CN104894939B (en) | Composite type road surface | |
| CN203923902U (en) | The double-deck SMA deck installation structure of a kind of flip-over type | |
| CN212000440U (en) | Drainage road surface structure of urban intersection and bus stop | |
| CN204356652U (en) | A kind of waterproofing bridge floor paving structure | |
| CN106192647A (en) | A kind of arch basic unit pavement structure | |
| CN112982061A (en) | Flexible base layer with multilayer separation structure and construction method thereof | |
| CN108301276A (en) | A kind of long-life tencel concrete road surface structure and construction method | |
| CN205420942U (en) | Concatenation infiltration brick | |
| CN204199134U (en) | The transition structure of a kind of semi-rigid type base and pellet flexbile base | |
| CN204898456U (en) | Contain rubber asphalt stress absorption layer bituminous paving | |
| CN109235173A (en) | A kind of combined road pavement structure | |
| CN201236314Y (en) | Water discharge protective bridge deck paving structure | |
| CN203238541U (en) | Cement concrete bridge deck pavement structure capable of being applied to extreme operating environment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20160413 Termination date: 20201022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |