CN105735079A - Treatment method for bituminous pavement transverse reflection cracks - Google Patents
Treatment method for bituminous pavement transverse reflection cracks Download PDFInfo
- Publication number
- CN105735079A CN105735079A CN201610129169.6A CN201610129169A CN105735079A CN 105735079 A CN105735079 A CN 105735079A CN 201610129169 A CN201610129169 A CN 201610129169A CN 105735079 A CN105735079 A CN 105735079A
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- Prior art keywords
- pavement
- treatment method
- road surface
- crack
- reflection crack
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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
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/187—Repairing bituminous covers, e.g. regeneration of the covering material in situ, application of a new bituminous topping
-
- 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
- E01C11/00—Details of pavings
- E01C11/005—Methods or materials for repairing pavings
Abstract
The invention discloses a treatment method for bituminous pavement transverse reflection cracks. The treatment method comprises the operation steps of crack marking, pavement milling and planing, old material reclamation, polyester glass fiber fabric laying, bituminous mixture paving, pavement flattening and the like. The treatment method provided by the invention is a treatment method based on pavement in-place hot recycling, and the transverse reflection cracks of a pavement can be treated through the treatment method in the pavement in-place hot recycling maintenance process; and the treatment method does not need to be specifically used for treating the transverse reflection cracks, the pavement maintenance cost can be reduced, and the construction interference to traffic is reduced. In addition, the treatment method provided by the invention is good in treatment effect on the transverse reflection cracks; the transverse reflection cracks of the original pavement cannot be developed upwards either within two years after being treated, moreover, the water permeability coefficient and the flatness at the cracks all meet the correlation technique requirements too, further development of the cracks is delayed, and the service life of the pavement is prolonged.
Description
Technical field
The present invention relates to maintenance of surface and improvement, be specifically related to the Treatment Methods of a kind of bituminous paving transverse direction reflection crack, this Treatment Methods may be used in the on-site heat regeneration maintenance processes of road surface, the horizontal reflection crack in this road surface being carried out along band punishment.
Background technology
Horizontal reflection crack is one of modal disease in China's semi-rigid asphalt pavement, and increase the weight of along with the growth in road age in the use procedure on road surface, if these cracks mustn't go to punishment in time will cause the further damage on road surface gradually, the appearance of serious plant disease such as including some purt slurry, pit, depressions, ultimately result in the sharp-decay of Pavement Condition and ride quality, the comfortableness of impact driving and safety, reduce service life of road surface.
Horizontal reflection crack is first to be ftractureed by basic unit and crack from bottom to top that tailing edge cracking basic unit is reflected up to asphalt surface course and is formed, or under Driving Loading, the crack that crack extends up along the semi-rigid type base that ftractures and formed, the reflection crack of semi-rigid pavement is mainly non-load crack.For this type of crack, general conventional punishment mode mainly includes two kinds, and one is in the routine maintenance of road surface, adopts the fracture such as base joint grouting glue or patch seam bar to carry out cementation of fissures process, to reach the purpose of water shutoff；Another kind is that fracture focuses in road surface medium-capital overhauling maintenance or crack special project maintenance, mainly lays Fibergrass polyester mat after excavation, then backfills.
There are some problems in above two transverse direction reflection crack Treatment Methods, and first, adopt the methods such as base joint grouting glue to be only capable of its surface is processed, reach the effect of water shutoff, be typically in losing for about 1 year effect, and during construction, traffic is caused certain interference；Second, adopt the mode of digging up and filling in punish effect relatively better, but cost is high, waste time and energy, complexity of constructing.Therefore, convenient effective horizontal reflection crack punishment mode how is taked to become the urgent needs of present stage big traffic flow highway maintenance.
Summary of the invention
It is an object of the invention to provide the Treatment Methods of a kind of bituminous paving transverse direction reflection crack, for the horizontal reflection crack in this road surface is punished by road surface on-site heat regeneration maintenance processes, special horizontal reflection crack need not be punished, to reduce road surface integrated maintenance cost.
The above-mentioned purpose of the present invention is achieved by the techniques below scheme:
The Treatment Methods of a kind of bituminous paving transverse direction reflection crack, for the horizontal reflection crack in this road surface being punished in the on-site heat regeneration maintenance processes of road surface, comprises the steps:
Step S1, crack labelling: before the on-site heat regeneration maintenance of road surface, the horizontal reflection crack in this road surface is carried out labelling, mark position is from each 0.75m scope in horizontal reflection crack both sides；
Step S2, road-surface milling: adopt on-site heat regeneration technique that the above-mentioned road surface needing on-site heat regeneration maintenance is carried out milling, expose the road table after milling；
Step S3, reclamation of old material: adopt reclamation of old material technique by the reclamation of old material after milling, obtain reclaimed asphalt mixture；
Step S4, lays polyester glass-fiber-fabric: lays polyester glass-fiber-fabric on the exposed road table of horizontal reflection crack label range, and beats smooth by its surface；
Step S5, pave asphalt: is paved the exposed road table after milling by the reclaimed asphalt mixture that step S3 obtains, and paves after uniformly, more manually uniformly mend in horizontal reflection crack label range and spread reclaimed asphalt mixture；
Step S6, flatness processes: the reclaimed asphalt mixture paved in step S5 is carried out vibroroller cmpacting repeatedly, and wherein, horizontal reflection crack label range need to carry out oblique vibroroller cmpacting repeatedly, until being rolled on road surface smooth.
Further, the reclaimed asphalt mixture that reclamation of old material in above-mentioned Treatment Methods step S3 prepares is collected to standby in asphalt remixer hopper.
Further, in above-mentioned Treatment Methods step S4, before laying polyester glass-fiber-fabric, exposed road table temperature to be laid is higher than 90 DEG C.When temperature is higher than 90 DEG C, polyester glass-fiber-fabric can very strongly be bonded on exposed earth's surface.
Further, in above-mentioned Treatment Methods step S5, manually uniformly mend in horizontal reflection crack label range and spread 15～20kg reclaimed asphalt mixture.Because horizontal reflection crack label range need than other road surfaces roll smooth often, artificial mend spread reclaimed asphalt mixture can ensure that through rolling smooth after the planarization on whole road surface.
Further, in above-mentioned Treatment Methods step S6, it is 45 ° that described oblique finger rolls the angle laid between direction of direction and polyester glass-fiber-fabric.
Further, the rolling apparatus in above-mentioned Treatment Methods is steel roller.
Advantages of the present invention:
1, Treatment Methods provided by the invention is a kind of Treatment Methods based on road surface on-site heat regeneration, the horizontal reflection crack of the method road pavement can be used in the on-site heat regeneration maintenance processes of road surface to punish in the lump, the method does not need to be specifically designed for horizontal reflection crack and punishes, maintenance of surface cost can be reduced, reduce the interference that traffic is brought by construction；
2, compare existing patch seam technology only to backfill again roll laying Fibergrass polyester mat after cold for crack place milling, the inventive method will lay polyester glass-fiber-fabric at crack place after the whole hot recycling in road surface at place, crack, then decking and rolling, not only interface layer scope is wide, and be hot adhesion, ensure surface layer structure stability in the large, and large area paves and is easier to roll, it is ensured that surface evenness；
3, the Treatment Methods provided by the invention punishment excellent effect to horizontal reflection crack, after punishment in 2 years, the horizontal reflection crack on former road surface comes up without development, and the infiltration coefficient at crack place and flatness are also satisfied by associated specifications, delay the further development in crack, extend service life of road surface.
Accompanying drawing explanation
Fig. 1 is the structure and crack, the crack label range schematic diagram that need on-site heat regeneration maintenance road surface；
Fig. 2 is the schematic diagram after road-surface milling；
Fig. 3 is the schematic diagram after polyester glass-fiber-fabric is laid at crack place；
Fig. 4 is the pavement structure schematic diagram after reclaimed asphalt mixture that paves；
Fig. 5 lays that polyester glass-fiber-fabric place is oblique rolls direction schematic diagram.
In figure: 1, horizontal reflection crack；2, crack label range；3, former road surface；4, the former road-surface milling scope of part；5, partial regeneration road surface；6, polyester glass-fiber-fabric；7, regenerated road surface；8, polyester glass-fiber-fabric position；9, oblique scope is rolled.
Detailed description of the invention
Further illustrate the essentiality content of the present invention below in conjunction with embodiment, but do not limit scope with this.Although the present invention being explained in detail with reference to preferred embodiment, it will be understood by those within the art that, it is possible to technical scheme is modified or equivalent replacement, without deviating from the spirit and scope of technical solution of the present invention.
(1) preparation of construction
Asphalt, polyester glass-fiber-fabric, again generating apparatus, paver, steel roller, spade, marking pen.
(2) crack labelling
According to construction plan every day, the all horizontal reflection crack (in Fig. 1 label 1) that the same day plans on-site heat regeneration maintenance construction section (such as Fig. 1 label 3) in advance is investigated, and adopt marking pen that horizontal reflection crack position 1.5m width range (in accompanying drawing 1 place shown in label 2) is carried out labelling, namely horizontal reflection crack both sides are being carried out labelling far from 0.75m place, crack scope, laying when being simultaneously positioned over by polyester glass-fiber-fabric near crack with convenient construction.
(3) road-surface milling
Adopting on-site heat regeneration unit that the former road surface of construction section is heated, carry out milling subsequently, milling thickness is on-site heat regeneration conceptual design thickness.On-site heat regeneration technical scheme performs by " asphalt highway regeneration techniques specification " (JTGF41-2008).In Fig. 2, label 4 is the former road-surface milling scope of part.
(4) asphalt collects (reclamation of old material)
Adopt reclamation of old material technique to be regenerated by the asphalt after milling, then with loading head, the asphalt after regeneration is collected to hopper of paver, expose the road table after milling.
(5) Fibergrass polyester mat is laid
The polyester glass-fiber-fabric being positioned over vicinity, crack in advance is layed in crack location (as shown in Fig. 3 label 6), before laying, exposed road table temperature more than 90 DEG C, and need to use spade to beat smooth by its surface so that it is is firmly pasted on the temperature exposed road table more than 90 DEG C.
(6) reclaimed asphalt mixture paves
Adopt asphalt remixer by the bituminous mixture laying exposed road table after milling after regeneration, pave after uniformly, more manually uniformly mend in horizontal reflection crack label range and spread 6～7 spades (15～20kg) reclaimed asphalt mixture.In Fig. 2, label 5 is partial regeneration road surface；In Fig. 4,7 is regenerated road surface.
(7) flatness processes
Adopting steel roller that the place of the reclaimed asphalt mixture that paves is carried out vibroroller cmpacting repeatedly, wherein, horizontal reflection crack label range need to carry out oblique vibroroller cmpacting repeatedly, until being rolled on road surface smooth；It is 45 ° that described oblique finger rolls the angle laid between direction of direction and polyester glass-fiber-fabric, as shown in Figure 5.
(8) open to traffic
It is down to open to traffic after below 50 DEG C until the temperature of asphalt.
Above-mentioned steps can be summarized as:
Step S1, crack labelling: before the on-site heat regeneration maintenance of road surface, the horizontal reflection crack in this road surface is carried out labelling, mark position is from each 0.75m scope in horizontal reflection crack both sides；
Step S2, road-surface milling: adopt on-site heat regeneration technique that the above-mentioned road surface needing on-site heat regeneration maintenance is carried out milling, expose the road table after milling；
Step S3, reclamation of old material: adopt reclamation of old material technique by the reclamation of old material after milling, obtain reclaimed asphalt mixture；
Step S4, lays polyester glass-fiber-fabric: lays polyester glass-fiber-fabric on the exposed road table of horizontal reflection crack label range, and beats smooth by its surface；
Step S5, pave asphalt: is paved the exposed road table after milling by the reclaimed asphalt mixture that step S3 obtains, and paves after uniformly, more manually uniformly mend in horizontal reflection crack label range and spread reclaimed asphalt mixture；
Step S6, flatness processes: the reclaimed asphalt mixture paved in step S5 is carried out vibroroller cmpacting repeatedly, and wherein, horizontal reflection crack label range need to carry out oblique vibroroller cmpacting repeatedly, until being rolled on road surface smooth.
Wherein, the reclaimed asphalt mixture that in step S3, reclamation of old material prepares is collected to standby in asphalt remixer hopper；In step S4, before laying polyester glass-fiber-fabric, exposed road table temperature to be laid is higher than 90 DEG C；In step S5, manually uniformly mend in horizontal reflection crack label range and spread 15～20kg reclaimed asphalt mixture；In step S6, it is 45 ° that described oblique finger rolls the angle laid between direction of direction and polyester glass-fiber-fabric.
Effect example
Implementation result after fracture punishment is tested, and result is as shown in table 1 below.
Table 1 construction quality inspection result
| Project | Infiltration coefficient (ml/min) | Flatness (mm) | Crack |
| After enforcement | 0 | 0.2 | Nothing |
| After being open to traffic 1 year | 0 | 0.4 | Nothing |
| After being open to traffic 2 years | 14 | 0.4 | Nothing |
| Quality control standards (QCS) | ≤60 | ≤3 | / |
| Test method | T 0971 | T 0931 | Range estimation |
Can be seen that from upper table result, after being punished by the present invention, use through 2 years, the horizontal reflection crack on former road surface not yet develops up, and the infiltration coefficient at crack place and flatness are also satisfied by associated specifications, show that the horizontal reflection crack Treatment Methods that the present invention proposes achieves good application effect, not only delay the further development of reflection crack, extend service life of road surface, and the disposable punishment achieving fracture in pavement recycling maintenance processes, decrease crack routine maintenance and the number of times of special maintenance, reduce maintenance costs, reduce the interference etc. to traffic, achieve certain economy and environmental benefit.
The effect of above-described embodiment indicates that the essentiality content of the present invention, but does not limit protection scope of the present invention with this.It will be understood by those within the art that, it is possible to technical scheme is modified or equivalent replacement, without deviating from essence and the protection domain of technical solution of the present invention.
Claims (5)
1. a Treatment Methods for bituminous paving transverse direction reflection crack, for punishing the horizontal reflection crack in this road surface in the on-site heat regeneration maintenance processes of road surface, it is characterised in that comprise the steps:
Step S1, crack labelling: before the on-site heat regeneration maintenance of road surface, the horizontal reflection crack in this road surface is carried out labelling, mark position is from each 0.75m scope in horizontal reflection crack both sides；
Step S2, road-surface milling: adopt on-site heat regeneration technique that the above-mentioned road surface needing on-site heat regeneration maintenance is carried out milling, expose the road table after milling；
Step S3, reclamation of old material: adopt reclamation of old material technique by the reclamation of old material after milling, obtain reclaimed asphalt mixture；
Step S4, lays polyester glass-fiber-fabric: lays polyester glass-fiber-fabric on the exposed road table of horizontal reflection crack label range, and beats smooth by its surface；
Step S5, pave asphalt: is paved the exposed road table after milling by the reclaimed asphalt mixture that step S3 obtains, and paves after uniformly, more manually uniformly mend in horizontal reflection crack label range and spread reclaimed asphalt mixture；
Step S6, flatness processes: the reclaimed asphalt mixture paved in step S5 is carried out vibroroller cmpacting repeatedly, and wherein, horizontal reflection crack label range need to carry out oblique vibroroller cmpacting repeatedly, until being rolled on road surface smooth.
2. Treatment Methods according to claim 1, it is characterised in that: the reclaimed asphalt mixture prepared by reclamation of old material in step S3 is collected to standby in asphalt remixer hopper.
3. Treatment Methods according to claim 1, it is characterised in that: in step S4, before laying polyester glass-fiber-fabric, exposed road table temperature to be laid is higher than 90 DEG C.
4. Treatment Methods according to claim 1, it is characterised in that: in step S5, manually uniformly mend in horizontal reflection crack label range and spread 15～20kg reclaimed asphalt mixture.
5. Treatment Methods according to claim 1, it is characterised in that: in step S6, it is 45 ° that described oblique finger rolls the angle laid between direction of direction and polyester glass-fiber-fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610129169.6A CN105735079A (en) | 2016-03-07 | 2016-03-07 | Treatment method for bituminous pavement transverse reflection cracks |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610129169.6A CN105735079A (en) | 2016-03-07 | 2016-03-07 | Treatment method for bituminous pavement transverse reflection cracks |
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| CN201610129169.6A Pending CN105735079A (en) | 2016-03-07 | 2016-03-07 | Treatment method for bituminous pavement transverse reflection cracks |
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Cited By (3)
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| CN108797255A (en) * | 2018-06-25 | 2018-11-13 | 重庆交通大学 | A kind of asphalt pavement crack homogeneity restorative procedure |
| CN109914208A (en) * | 2019-04-15 | 2019-06-21 | 英达热再生有限公司 | Linear road changes section optimization asphalt and matches hot reproduction repairing method |
| CN114494849B (en) * | 2021-12-21 | 2024-04-09 | 重庆特斯联智慧科技股份有限公司 | Road surface state identification method and system for wheeled robot |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108797255A (en) * | 2018-06-25 | 2018-11-13 | 重庆交通大学 | A kind of asphalt pavement crack homogeneity restorative procedure |
| CN109914208A (en) * | 2019-04-15 | 2019-06-21 | 英达热再生有限公司 | Linear road changes section optimization asphalt and matches hot reproduction repairing method |
| CN109914208B (en) * | 2019-04-15 | 2021-02-12 | 英达热再生有限公司 | Hot regeneration repairing method for optimizing asphalt mixture ratio of road surface linear change road section |
| CN114494849B (en) * | 2021-12-21 | 2024-04-09 | 重庆特斯联智慧科技股份有限公司 | Road surface state identification method and system for wheeled robot |
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