CN207775646U - A kind of roadbed preventing reflection crack - Google Patents
A kind of roadbed preventing reflection crack Download PDFInfo
- Publication number
- CN207775646U CN207775646U CN201820060378.4U CN201820060378U CN207775646U CN 207775646 U CN207775646 U CN 207775646U CN 201820060378 U CN201820060378 U CN 201820060378U CN 207775646 U CN207775646 U CN 207775646U
- Authority
- CN
- China
- Prior art keywords
- road
- old road
- new base
- base course
- crack
- 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
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Abstract
The utility model discloses a kind of roadbeds preventing reflection crack, are a kind of roadbeds suitable for road broadening or road maintenance；Including：Old road base and new base course are surveyed on the new base course and are disposed with middle grain formula pitch concrete layer and asphalt overlay from the bottom to top；The middle grain formula pitch concrete layer covers new base course and anti-splitting paster and extends to old road substrate top surface.Grain formula pitch concrete layer and original old road face top in the asphalt overlay covering.It is provided with anti-splitting paster at the old road base and new base course institute overlapped crack；The anti-splitting paster symmetrical lap-joint for being attached to old road base and new base course in being with crack.The utility model utilizes tensile strength, toughness and the surface viscosity of anti-splitting paster, can effectively reduce crack extension and prevent crack reflection to road table.
Description
Technical field
The utility model is related to field of road, and in particular to a kind of roadbed preventing reflection crack.
Background technology
In road construction project, base material semi-rigid material multi-purpose greatly, cement stabilized macadam therein, intensity
Height, water stability are preferable, are used widely in road construction.But cement stabilized macadam is as base material, the disadvantage is that holding
It is also easy to produce drying shrinkage, warm plastic forming, is aggravated along with the entire validity period of road, and with the growth in road age, and then cause road
Face reflection crack.
In road maintenance engineering, usually the pit slot after milling at disease is filled up using concrete, but, after filling up
The old and new's sub-surface lap-joint form splicing seams, which easily causes reflection cracking in a pavement, cause repair after road surface
It is destroyed again.
Invention content
The technical problem to be solved by the present invention is to provide a kind of roadbeds preventing reflection crack, can effectively reduce splicing
Seam extends and is reflected into road table.
The utility model is achieved through the following technical solutions：
A kind of roadbed preventing reflection crack, including old road base and new base course, the new base course upper surface by
Under supreme be disposed with middle grain formula pitch concrete layer and asphalt overlay；The old road base and new base course lap-joint are provided with
Anti-splitting paster；The anti-splitting paster symmetrical lap-joint for being attached to old road base and new base course in being with lap-joint, it is described
Middle grain formula pitch concrete layer covers new base course and anti-splitting paster and extends to old road substrate top surface.
Further, the width of the anti-splitting paster is at least 24cm.
Further, the new base course is C20 concretes or cement stabilized macadam base.
Further, the middle grain formula pitch concrete layer covers new base course and anti-splitting paster and extends to old road base top
Face.
Further, the end of the extension is from overlapped crack at least 30cm.
Further, the top surface of grain formula pitch concrete layer and old road superficial layer during the asphalt overlay covers.
The utility model compared with prior art, has following obvious advantage：
The utility model proposes a kind of roadbed preventing reflection crack, be a kind of to be suitable for road broadening or road maintenance
Roadbed.The utility model utilizes tensile strength, toughness and the surface viscosity of anti-splitting paster, is split in cement stabilized macadam base top surface
At seam, disease repairing lap-joint symmetrically paste anti-splitting paster, can effectively reduce seam extension and prevent crack reflection to road table.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model.
Label in attached drawing and parts mark：1- soil matrixs, the old roads 2- Lime-soil subbase, the old roads 3- base, the new roads 4-
Grain formula pitch concrete layer, the old roads 6- superficial layer, 7- asphalt overlays, 8- anti-splitting pasters in base, 5-.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Illustrate as shown in Figure 1, the present embodiment is the one embodiment carried out for road maintenance.Base on original old road
On plinth, milling is carried out to the base on old road, adopts a raw milling region, is then directed to milling region and re-lay new base's progress
It fills up.
A kind of roadbed preventing reflection crack, including：Old road base 3 and new base course 4, the old road base 3 and new
Old road Lime-soil subbase 2 and soil matrix 1 are arranged downwards successively at the bottom of base course 4；4 upper table of new base course faces upward successively
It is provided with middle grain formula pitch concrete layer 5 and asphalt overlay 7；The new base course 4 is directed to using C20 concretes or cement stabilized macadam
Milling region carries out new laying, forms new base course 4.Since cement stabilized macadam easy tos produce drying shrinkage and temperature contracting in construction
Crack, the old road base 3 and 4 lap-joint of new base course are provided with anti-splitting paster 8, and crack is extended and prevented for reducing crack
It is reflected into road table.The anti-splitting paster 8 symmetrical lap-joint for being attached to old road base 3 and new base course 4 in being with crack.It adopts
With the stickup anti-splitting paster 8 being symmetrically bonded, the uniform force in old road base 3 and new base course 4 of anti-splitting paster 8 can be made.In this implementation
The width of anti-splitting paster 3 is 24cm in example.The middle grain formula pitch concrete layer 5 covers new base course 4 and anti-splitting paster 8 and extends to old
3 top surface of base course.The end extended in the present embodiment is from lap-joint 30cm.Grain formula bitumen concrete during the asphalt overlay 7 covers
The top surface 6 of layer 5 and original old road superficial layer.
Claims (5)
1. a kind of roadbed preventing reflection crack, including old road base (3) and new base course (4), on the new base course (4)
Surface is disposed with middle grain formula pitch concrete layer (5) and asphalt overlay (7) from the bottom to top；Described old road base (3) He Xinlu
Base (4) lap-joint is provided with anti-splitting paster (8)；It is characterized in that：The anti-splitting paster (8) is symmetrical in being with lap-joint to be attached to
The lap-joint of old road base (3) and new base course (4), the middle grain formula pitch concrete layer (5) cover new base course (4) and cracking resistance
Patch (8) simultaneously extends to old road base (3) top surface.
2. a kind of roadbed preventing reflection crack according to claim 1, it is characterised in that：The width of the anti-splitting paster (8)
Degree is at least 24cm.
3. a kind of roadbed preventing reflection crack according to claim 1, it is characterised in that：The new base course (4)
For C20 concretes or cement stabilized macadam base.
4. a kind of roadbed preventing reflection crack according to claim 1, it is characterised in that：The middle grain formula pitch concrete layer
(5) old road base (3) top surface is extended to, the end extended is from overlapped crack at least 30cm.
5. a kind of roadbed preventing reflection crack according to claim 1, it is characterised in that：The asphalt overlay (7)
The top surface of grain formula pitch concrete layer (5) and old road superficial layer (6) in covering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820060378.4U CN207775646U (en) | 2018-01-15 | 2018-01-15 | A kind of roadbed preventing reflection crack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820060378.4U CN207775646U (en) | 2018-01-15 | 2018-01-15 | A kind of roadbed preventing reflection crack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207775646U true CN207775646U (en) | 2018-08-28 |
Family
ID=63212743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820060378.4U Expired - Fee Related CN207775646U (en) | 2018-01-15 | 2018-01-15 | A kind of roadbed preventing reflection crack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207775646U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111041927A (en) * | 2019-11-21 | 2020-04-21 | 江苏永联精筑建设集团有限公司 | Method for repairing damaged asphalt concrete pavement |
-
2018
- 2018-01-15 CN CN201820060378.4U patent/CN207775646U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111041927A (en) * | 2019-11-21 | 2020-04-21 | 江苏永联精筑建设集团有限公司 | Method for repairing damaged asphalt concrete pavement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180828 Termination date: 20220115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |