CN109082982A - A kind of processing method of semi-rigid asphalt pavement cracking - Google Patents
A kind of processing method of semi-rigid asphalt pavement cracking Download PDFInfo
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- E—FIXED CONSTRUCTIONS
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Abstract
The invention discloses a kind of processing methods of semi-rigid asphalt pavement cracking, and the fracture width and the penetration of fracture in the crack to be measured of the semi-rigid asphalt pavement are detected using crack comprehensive tester；And the testing result of each structure sheaf in the semi-rigid asphalt pavement is obtained using Ground Penetrating Radar GPR detection, and then realizes quick detection comprehensive and systematic to semi-rigid pavement disease.In addition, the comprehensive fracture width, the penetration of fracture and the testing result divide cracking type to the crack to be measured；Then cracking causes of disease analysis is carried out to the crack to be measured in each cracking type；And based on the corresponding layer of structure in crack to be measured and cracking causes of disease in each cracking type, corresponding Prevention technology is carried out to the crack to be measured in each cracking type.
Description
Technical field
This application involves the places that pavement maintenance & rehabilitation technical field more particularly to a kind of semi-rigid asphalt pavement crack
Reason method.
Background technique
In recent years, with the fast development of China Higher grade highway construction, traffic network is gradually improved, the weight of highway construction
Point is just gradually developed from being created on a large scale to maintenance alteration stage.Wherein semi-rigid pavement is inorganic by cement, lime etc.
Binder stabilized base and asphalt surface course form, because it has the characteristics that intensity is high, bearing capacity is big, good integrity, high-grade
It is widely used in highway construction.However, there are different journeys after a period of time of being open to traffic in semi-rigid pavement
The disease of degree, such as crack, purt slurry, depression, come to nothing, pit slot, and crack is as most common in all kinds of breakages of bituminous pavement, most easily
Occur, the disease that earliest period generates, it is almost along with the entire validity period of bituminous pavement, and with the increasing of the road occupation time limit
Add and constantly aggravate, seriously affect that the appearance of a street is beautiful and road-ability, at the same be also cause the pavement structures such as purt slurry, depression other
The inducement of disease.As being continuously increased for traffic volume of highway is growing day by day with large-tonnage haulage vehicle, semi-rigid pavement with
Upper disease is increasingly serious, especially the most prominent with pavement crack；If cannot handle in time, it will influence the normal use on road surface
Function.
Currently, China still depends on traditional determining based on experience to the punishment of semi-rigid pavement cracking disease
Plan mode is usually taken the cementation of fissures, micro-surface area, opens that general sealing, milling are spread again, the methods of drilled pressure filling handles these pavement diseases.
The cementation of fissures generally uses heated bitumen filling to block crack, prevents road surface from seeping under water and semi-rigid type base and roadbed is caused to soften, but deposit
Pouring into, difficulty is big, and pitch and crack bond loosely, the disadvantages of easily squeezing out of being heated；Micro-surface area opens general sealing etc. only on road surface
It is preferable that surface crack effect is punished in the case that base layer quality is intact, if base layer quality is unqualified, there are compactnesss unevenly,
Reflection crack will soon occur in depression or cracking etc., the asphalt surface course of overlay, and service life of some sections after crack treatment is logical
Often it is less than 1 year；Though milling spreads the characteristic that can improve surface layer comprehensively again, it is related to, and project amount is big, the blocked road time is long,
Maintenance cost is high；Drilled pressure filling is the preferable mode of the no-dig technique processing following deep layer disease in road surface, but its function and effect exists not
The disadvantages of certainty, not strong punishment specific aim.
As can be seen that traditional Defects Treatment measure based on experience cannot fundamentally solve pavement cracking disease
Problem, and can not be efficiently against the appearance repeatedly after the reparation of crack, while being difficult to adapt to increasingly heavy communications and transportation needs.
Summary of the invention
Invention provides a kind of processing methods of semi-rigid asphalt pavement cracking, to solve or partially solve
Traditional Defects Treatment measure based on experience cannot fundamentally solve the problems, such as pavement cracking disease.
In order to solve the above technical problems, the present invention provides a kind of processing method of semi-rigid asphalt pavement cracking,
The described method includes:
The fracture width in the crack to be measured of the semi-rigid asphalt pavement is detected using crack comprehensive tester and is split
Stitch depth；
The testing result of each structure sheaf in the semi-rigid asphalt pavement is obtained using Ground Penetrating Radar GPR detection；
The comprehensive fracture width, the penetration of fracture and the testing result divide cracking class to the crack to be measured
Type；
Cracking causes of disease analysis is carried out to the crack to be measured in each cracking type；
Based on the corresponding layer of structure in crack to be measured and cracking causes of disease in each cracking type, to each cracking class
Crack to be measured in type carries out corresponding Prevention technology.
Preferably, the crack to be measured that the semi-rigid asphalt pavement is detected using crack comprehensive tester is split
Slit width degree and the penetration of fracture, specifically include:
Along the crack to be measured fracture strike arrange survey line, by the crack comprehensive tester host camera and
The crack to be measured is corresponding, and the crack picture in the crack to be measured is real-time transmitted to the crack synthesis using the camera
On the host display of tester, so that the crack comprehensive tester is based on the described to be measured of the crack picture automatic identification
The fracture profile in crack, and the fracture width in the crack to be measured is obtained by Processing Technology in Microscopic Images analytical calculation；
The transmitting transducer of the crack comprehensive tester, reception energy converter are respectively coupled in the crack two sides to be measured
Symmetric position, the mobile transmitting transducer and the reception energy converter in sampling process, so that the crack comprehensive tester
Generate waveform；Stop movement when waveform phase jumps, records the transmitting transducing using the crack comprehensive tester
The first spacing and second spacing for receiving energy converter and the crack to be measured of device and the crack to be measured；By super
Sound method calculates first spacing and second spacing, and then obtains the penetration of fracture in the crack to be measured.
Preferably, the testing result contains one or more following detection parameters: thickness, compactness, loose sky
Hole and water content；
The detection knot that each structure sheaf in the semi-rigid asphalt pavement is obtained using Ground Penetrating Radar GPR detection
Fruit specifically includes:
Arrangement survey line is moved towards along the crack to be measured using Ground Penetrating Radar；
Sequential scan tests are carried out to the semi-rigid asphalt pavement, obtain Ground Penetrating Radar scan data；
The Ground Penetrating Radar scan data is analyzed according to dielectric property analytical technology, and then is obtained described semi-rigid
The thickness of each structure sheaf, compactness, water content and loose empty situation in Base Asphalt Pavement.
Preferably, described that sequential scan tests are carried out to the semi-rigid asphalt pavement, obtain Ground Penetrating Radar scanning
Data specifically include: carrying out sequential scan tests to the crack to be measured and its periphery predeterminable area, obtain Ground Penetrating Radar scanning
Data；
It is described that the Ground Penetrating Radar scan data is analyzed according to dielectric property analytical technology, and then obtain described half
The thickness of each structure sheaf, compactness, water content and loose empty situation in rigid base's bituminous pavement, specifically include: according to
Dielectric property analytical technology analyzes the Ground Penetrating Radar scan data, and then obtains the crack to be measured and its periphery is pre-
If the thickness of each structure sheaf, compactness, water content and loose empty situation in region.
Preferably, the cracking Type division is I class cracking and class ii cracking；
The I class cracking refers to sub-surface and its following part no significant defect, and cracking disease is only limitted to bituminous sheaths
Layer；
Class ii cracking refers to that top course has cracked, and base and its following part also occur cracking or
There are other obvious shortcomings.
Preferably, the crack to be measured in each cracking type carries out cracking causes of disease analysis, specifically includes:
According to the FRACTURE CHARACTERISTICS and the testing result in the crack to be measured that detection obtains, analysis obtain cause it is described to
Survey crack cracking causes of disease, the cracking causes of disease include: road surface raw material characteristics, road surface structare layer thickness and by force
Degree, temperature shrinkage or fatigue, vehicular load fatigue, water content, compactness, loose cavity, subgrade strength and its uniformity；
In conjunction with the cracking causes of disease and the testing result in the crack to be measured, analysis determination one by one forms the cracking
The key factor of causes of disease.
Preferably, the FRACTURE CHARACTERISTICS in the crack to be measured obtained according to detection and the testing result, analysis obtain
After the cracking causes of disease that must lead to the crack to be measured, the method also includes:
According to the FRACTURE CHARACTERISTICS and the testing result in the crack to be measured that detection obtains, analysis obtains the I class
The cracking causes of disease of cracking；Wherein, the cracking causes of disease of the I class cracking includes: that temperature shrinkage or temperature stress are tired
Labor crack, vehicular load fatigue crack, pavement structure thickness or intensity are insufficient, asphalt concrete material or match ratio are improper；
According to the FRACTURE CHARACTERISTICS and the testing result in the crack to be measured that detection obtains, analysis obtains the class ii
The cracking causes of disease of cracking；Wherein, the cracking causes of disease of the class ii cracking includes: the contracting of semi-rigid type base temperature or drying shrinkage
Crack, the vehicular load fatigue crack, sub-surface intensity is insufficient, water content is bigger than normal, loose cavity, subgrade compaction unevenness
It is even.
Preferably, it is described based on it is each cracking type in the corresponding layer of structure in crack to be measured and cracking disease at
Cause carries out corresponding Prevention technology to the crack to be measured in each cracking type, comprising:
Corresponding Prevention technology is carried out for I class cracking: when the I class occurs in the semi-rigid asphalt pavement
Cracking and top-crack density be less than pre-set density when, using the caulking joint of SBS modified emulsifying asphalt packing, micro-surface area, open general sealing
One or more kinds of preventive maintenance means；When the semi-rigid asphalt pavement appearance I class cracking and crack is close
When degree is greater than the pre-set density, being spread again by hot recycling or milling improves pavement structure characteristic.
Preferably, it is described based on it is each cracking type in the corresponding layer of structure in crack to be measured and cracking disease at
Cause carries out corresponding Prevention technology to the crack to be measured in each cracking type, comprising:
Corresponding Prevention technology is carried out for class ii cracking: when the Section II occurs in the semi-rigid asphalt pavement
When class cracks, one or more kinds of measures such as setting waterproof layer, rubble weeper drain, drilled pressure filling is taken to open the class ii
Road surface in splitting is handled.
Preferably, it is described based on it is each cracking type in the corresponding layer of structure in crack to be measured and cracking disease at
Cause carries out corresponding Prevention technology to the crack to be measured in each cracking type, comprising:
Corresponding Prevention technology is carried out for class ii cracking: mixed by setting geotextiles, steel fibre, rubber asphalt rubble
It closes the measure of one or more of material anticracking buffer layer and inhibits reflection crack development.
One or more technical solution through the invention, the invention has the advantages that advantage:
The invention discloses a kind of processing methods of semi-rigid asphalt pavement cracking, are examined using crack comprehensive tester
Survey the fracture width and the penetration of fracture in the crack to be measured of the semi-rigid asphalt pavement；And it is examined using Ground Penetrating Radar GPR
The testing result for obtaining each structure sheaf in the semi-rigid asphalt pavement is surveyed, and then is realized complete to semi-rigid pavement disease
The quick detection of plane system.In addition, the comprehensive fracture width, the penetration of fracture and the testing result to be measured are split to described
Seam divides cracking type；Then cracking causes of disease analysis is carried out to the crack to be measured in each cracking type；And it is based on each cracking
The corresponding layer of structure in crack to be measured and cracking causes of disease in type, carry out the crack to be measured in each cracking type
Corresponding Prevention technology.This Treatment Methods are based entirely on semi-rigid pavement feature and Cracking, according to pavement structure power
It learns design principle and proposes, have the characteristics that with strong points, durability is good, punishment significant effect, avoid pavement cracking disease
Harmful repairing repeatedly.The invention is by the non-destructive testing technologies such as crack comprehensive tester, Ground Penetrating Radar and pavement cracking causes of disease
Diagnosis and treatment technique are integrated, for semi-rigid asphalt pavement cracking Defect inspection, analyzing and diagnosing and maintenance
Maintenance provides advanced, scientific, efficient complete set technology, has preferable technical economic benefit.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 shows a kind of processing method of semi-rigid asphalt pavement cracking according to an embodiment of the invention
Flow chart；
Fig. 2 shows the signals of classification processing semi-rigid asphalt pavement according to an embodiment of the invention cracking
Figure.
Specific embodiment
In order to make the application the technical staff in the technical field be more clearly understood that the application, with reference to the accompanying drawing,
Technical scheme is described in detail by specific embodiment.
The purpose of one or more embodiment of the invention is in view of the defects existing in the prior art and insufficient, provides
A kind of processing method of semi-rigid asphalt pavement cracking, passes through the comprehensive of the cracking disease to semi-rigid asphalt pavement
Detection and cause diagnosis, formulate targeted handle measure, can effectively solve the problem that current semi-rigid pavement is generally existing and open
Problem is split, to achieve the purpose that improve driving comfort level, improve Pavement Condition, extend highway service life.
Specifically, including following three parts: one, semi-rigid asphalt pavement cracks disease non-destructive testing technology:
Using the nondestructive detecting instruments such as crack comprehensive tester, Ground Penetrating Radar (GPR) detection pavement crack width, depth and each structure sheaf
The spatial position of the inhomogeneous mediums such as thickness, loose cavity, water and form etc., are realized comprehensive and systematic to semi-rigid pavement disease
Quickly detection；Two, semi-rigid asphalt pavement cracks causes of disease diagnostic method: according to the factor for leading to pavement cracking, from
Raw material characteristics, vehicular load, pavement structure, natural environment, subgrade strength and its uniformity etc. are analyzed determination one by one and are split
The main reason for seam generates, finds causes of disease accurately to objective science；Three, semi-rigid asphalt pavement cracking Defects Treatment side
Method: according to the weight of pavement cracking disease, spreading rate and its severity impacted, targetedly take packing stifled
Seam, setting heat insulation and water resistance layer and anticracking buffer layer, milling are spread again or the methods of hot recycling flexible combination is to various pavement cracking diseases
Evil carries out classification punishment.This Treatment Methods are based entirely on semi-rigid pavement feature and Cracking, according to pavement structure power
It learns design principle and proposes, have the characteristics that with strong points, durability is good, punishment significant effect, avoid pavement cracking disease
Harmful repairing repeatedly.The invention is by the non-destructive testing technologies such as crack comprehensive tester, Ground Penetrating Radar and pavement cracking causes of disease
Diagnosis and treatment technique are integrated, for semi-rigid asphalt pavement cracking Defect inspection, analyzing and diagnosing and maintenance
Maintenance provides advanced, scientific, efficient complete set technology, has preferable technical economic benefit.
In order to further illustrate with explain the present invention, please refer to Fig. 1 below, the embodiment of the present invention contains following step
It is rapid:
Step 11, the crack that the crack to be measured of the semi-rigid asphalt pavement is detected using crack comprehensive tester is wide
Degree and the penetration of fracture.
In the specific implementation process, the fracture width in crack to be measured is completed by following implementation steps:
Along the crack to be measured fracture strike arrange survey line, by the crack comprehensive tester host camera and
The crack to be measured is corresponding, for example, the camera on the comprehensive tester host of crack is placed on above crack to be measured, in this way, taking the photograph
As head can then collect the crack data in crack to be measured.Using camera by the crack picture real-time Transmission in the crack to be measured
Onto the host display of the crack comprehensive tester.If image clearly, crack comprehensive tester can be based on the crack
The fracture profile in the crack to be measured of picture automatic identification, and by Processing Technology in Microscopic Images analytical calculation obtain it is described to
Survey the fracture width in crack.
In the specific implementation process, the excessively following implementation steps of the penetration of fracture in crack to be measured are completed:
The transmitting transducer of the crack comprehensive tester, reception energy converter are respectively coupled in the crack two sides to be measured
Symmetric position, the mobile transmitting transducer and the reception energy converter in sampling process, so that the crack comprehensive tester
Generate waveform；Stop movement when waveform phase jumps, records the transmitting transducing using the crack comprehensive tester
The first spacing and second spacing for receiving energy converter and the crack to be measured of device and the crack to be measured；By super
Sound method calculates first spacing and second spacing, and then obtains the penetration of fracture in the crack to be measured.
Step 12, the inspection of each structure sheaf in the semi-rigid asphalt pavement is obtained using Ground Penetrating Radar GPR detection
Survey result.
The testing result contains one or more following detection parameters: each Laminate construction thickness in road surface, compactness, pine
Dissipate cavity and water content.So mainly detecting each structure thickness in road surface using Ground Penetrating Radar (GPR) during detection
The parameters such as degree, compactness, loose cavity and water content.
So moving towards arrangement survey line along the crack to be measured first with Ground Penetrating Radar in specific detection process；
Then sequential scan tests are carried out to semi-rigid asphalt pavement, obtains Ground Penetrating Radar scan data；Then according to dielectric spy
Property analytical technology arranges Coherent Noise in GPR Record, obtains the pressure of the thickness of each structure sheaf on road surface, each structure sheaf on road surface
Solidity, road surface each structure sheaf water content and road surface each structure sheaf loose empty situation, to find out, there are above-mentioned
The concrete position of road surface internal flaw provides foundation for next step causes of disease diagnostic analysis.
And in order to further accurately obtain the causes of disease in crack to be measured, and save testing cost.Usually treat
Crack periphery predeterminable area is surveyed to be tested.Specific implementation process is as follows: utilizing Ground Penetrating Radar walking along the crack to be measured
To arrangement survey line；Sequential scan tests are carried out to the crack to be measured and its periphery predeterminable area, Ground Penetrating Radar is obtained and scans number
According to；The Ground Penetrating Radar scan data is analyzed according to dielectric property analytical technology, so obtain the crack to be measured and
In its periphery predeterminable area in the thickness of each structure sheaf, the crack to be measured and its periphery predeterminable area each structure sheaf compacting
The water content of each structure sheaf and the crack to be measured and its periphery are default in degree, the crack to be measured and its periphery predeterminable area
The loose empty situation of each structure sheaf in region.
Step 13, the comprehensive fracture width, the penetration of fracture and the testing result divide the crack to be measured
Crack type.
In the specific implementation process, the fracture width in the crack to be measured detected according to crack comprehensive tester, to
Survey crack the penetration of fracture, in conjunction with Ground Penetrating Radar scanning arrange obtain each Laminate construction thickness in road surface, compactness, water content and
Situations such as loose cavity, be that I class cracking and class ii crack by cracking Type division: the I class cracking refers to road surface base
Layer and its following part (namely including base) no significant defect, cracking disease are only limitted to asphalt surface course；The class ii is opened
It splits and refers to that top course has cracked, and cracking or existing also occur in base and its following part (namely including base)
Other obvious shortcomings.
Description through the foregoing embodiment is it is found that said one or multiple embodiments are realized to semi-rigid pavement disease
From outside to inside, comprehensive and systematic Fast nondestructive evaluation overcomes current Pavement on Semi-rigid Type Base cracking disease with artificial and experience
Deficiency based on judgement provides reliable foundation for causes of disease diagnostic analysis.
Step 14, cracking causes of disease analysis is carried out to the crack to be measured in each cracking type.
According to the FRACTURE CHARACTERISTICS and the testing result in the crack to be measured that detection obtains, analysis obtain cause it is described to
Survey crack cracking causes of disease, the cracking causes of disease include: road surface raw material characteristics, road surface structare layer thickness and by force
Degree, temperature shrinkage or fatigue, vehicular load fatigue, water content, compactness, loosely cavity, subgrade strength and its uniformity etc..
Diagnostic analysis is carried out one by one specific to two major classes cracking causes of disease below:
I class cracking: according to the FRACTURE CHARACTERISTICS and the testing result in the crack to be measured that detection obtains, analysis is obtained
The cracking causes of disease for causing the I class on road surface to crack；Wherein, the cracking causes of disease of the I class cracking includes: that temperature is received
Contracting or temperature stress fatigue crack, vehicular load fatigue crack, pavement structure thickness or intensity are insufficient, asphalt concrete material or
Match ratio is improper etc..
Class ii cracking: the FRACTURE CHARACTERISTICS in the crack to be measured obtained according to detection and the testing result, analysis obtain
The cracking causes of disease that the class ii on road surface must be caused to crack；Wherein, the cracking causes of disease of the class ii cracking includes: half
The contracting of rigid base's temperature or desciccation crack, the vehicular load fatigue crack, sub-surface intensity is insufficient, water content is bigger than normal, loose
Cavity, subgrade compaction are uneven etc..
Further, it in conjunction with the cracking causes of disease and the testing result in the crack to be measured, analyzes determine shape one by one
At the key factor of the cracking causes of disease.Further, the local core boring sampling in supplement scene carries out laboratory experiment when necessary
Or by calculating verifying, it is ensured that find causes of disease accurately.
Advantage of this embodiment is that: the fracture width and the penetration of fracture obtained according to detection scans number in conjunction with Ground Penetrating Radar
According to the efficiency and reliability for substantially increasing causes of disease analysis, compensate for the cracking disease screening of current Pavement on Semi-rigid Type Base according to
Rely the deficiency of micro-judgment, to take effective pavement cracking Defects Treatment method to lay a good foundation.
Step 15, right based on the corresponding layer of structure in crack to be measured and cracking causes of disease in each cracking type
Crack to be measured in each cracking type carries out corresponding Prevention technology.
Specifically, for the difference of two class crack levels and the origin cause of formation, SBS modified emulsifying asphalt can targetedly be taken
Packing caulking joint, setting heat insulation and water resistance layer, anticracking buffer layer, milling is spread again or hot recycling improves the methods of ground surface material characteristic, spirit
Combination living carries out classification punishment to different degrees of pavement cracking disease.
The introduction distinguished below.
I class cracking.
Corresponding Prevention technology is carried out for I class cracking, is specifically included:
When disease initial stage, there is the I class and cracks in the semi-rigid asphalt pavement, but top-crack density
Pre-set density can be less than, at this point, then can using the caulking joint of SBS modified emulsifying asphalt packing, micro-surface area, to hold general sealing etc. a kind of or
A variety of preventive maintenance means, otherwise rainwater and other sundries will enter sub-surface and roadbed position along crack, lead to road
Face bearing capacity sharply declines, and accelerates road surface part or damage in flakes.
When the disease middle and later periods, there is the I class cracking in the semi-rigid asphalt pavement, and top-crack is close at this time
Degree is greater than the pre-set density.Additionally, it is possible to can be with the irregular netted and crack phenomenon of appearance.At this point, hot recycling should be passed through
Or milling spreads improvement pavement structure characteristic again, otherwise rainwater, which penetrates at crack, other diseases such as purt slurry, depression, pit slot adjoint can occurs
Evil, brings to traffic safety and seriously affects.
Class ii cracking.When this kind of cracking disease occurs in road surface, should be taken in conjunction with the disease key origin cause of formation of checkout and diagnosis
Setting heat insulation and water resistance layer prevents Wensu and desciccation crack, drilled pressure filling technology reinforcement bearing capacity, and setting prevents anticracking buffer layer, suppression
The development of reflection crack processed, and spread again with milling or the methods of hot recycling is combined use.
Corresponding Prevention technology is carried out for class ii cracking, is specifically included:
When class ii cracking occurs in the semi-rigid asphalt pavement, when this kind of cracking disease occurs in road surface
When, the one or more such as setting waterproof layer, rubble weeper drain, drilled pressure filling should be taken in conjunction with the causes of disease of checkout and diagnosis
Measure handles the road surface in class ii cracking.In addition, carrying out corresponding Prevention technology for class ii cracking, also
It can be pressed down by the measure of one or more of setting geotextiles, steel fibre, rubber asphalt macadam-aggregate mix anticracking buffer layer
Reflection crack development processed.
In the specific implementation process, the treatment measures of foregoing description " are arranged rubber between asphalt surface course and base to drip
Green macadam-aggregate mix anticracking buffer layer ", " between asphalt surface course and base be arranged geotextiles, modified pitch stress absorption film ",
" waterproof layer is set between asphalt surface course and base ", " steel fibre is added in semi-rigid sub-base material ", " in subgrade moisture content
More than the position of default water content, in base's closely knit zero defect position rubble weeper drain arranged below, and meanwhile it is mixed using foam
Solidifying soil recharge ", " drilled pressure filling " can also can be used alone with any combination.
Further, between asphalt surface course and base be arranged rubber asphalt macadam-aggregate mix anticracking buffer layer, geotextiles,
When modified pitch stress absorption film, waterproof layer etc. one or more layer structure, the overlying relation of these layer of structure can be with
Any setting, the application for layer structure overlying relation with no restrictions, as long as being arranged between asphalt surface course and base
?.Such as layer structure may is that base, rubber asphalt macadam-aggregate mix anticracking buffer layer, geotextiles, modified drip from the bottom to top
Green stress absorption film, waterproof layer, asphalt surface course etc. are also possible to base, rubber asphalt macadam-aggregate mix anticracking buffer layer, prevent
Water layer, modified pitch stress absorption film, asphalt surface course etc., layer structure can be configured according to the actual situation.
The present embodiment is based on semi-rigid pavement feature and cracking Defect inspection result and genetic analysis, according to pavement structure power
It learns design principle and proposes, have the characteristics that punishment is with strong points, controllability is good, durability is good, avoid pavement cracking
It repairs repeatedly.
The specific implementation and effect of the various control measures for class ii cracking is described below.
Rubber asphalt macadam-aggregate mix anticracking buffer layer is set between asphalt surface course and base, reflection can be effectively suppressed and split
The generation and extension of seam improve the service life and service state of pavement structure；It is arranged between asphalt surface course and base simultaneously
Geotextiles, modified pitch stress absorption film have load pooling feature and compatibility of deformation effect, improve overall performance.
Further, waterproof layer is set between asphalt surface course and base, can not only prevent moisture from penetrating into sub-surface, but also can prevent
Only crack continues up sprawling under load action, and repairing pavement durability is good, remarkable in economical benefits.
Further, steel fibre is added in semi-rigid sub-base material, enhances the tensile capacity of semi-rigid type base entirety,
The good tensile property of steel fibre can undertake semi-rigid type base Wensu and drying shrinkage stress completely, prevent the reflection of basic crack climing
Prolong.
Further, the excessive position of subgrade moisture content, at the closely knit zero defect position of base, rubble draining arranged below is blind
Ditch, while the foam concrete recharge fast using light weight, speed of application, can effectively reduce the overlying burden of french drain, avoid blind
Ditch is squeezed and deformed and silting influences drainage effect.
Table 1 is please referred to, table 1 is the semi-rigid asphalt pavement cracking of one or more embodiment description of the invention
Processing method specific control method.
Table 1
Fig. 2 is please referred to below, in order to which more intuitive description and interpretation are of the invention, double in a manner of classifying of the present embodiment
Rigid base's Asphalt Pavement Cracking Prevention technology.
Step 21, semi-rigid asphalt pavement cracking cracking.
Step 22, (crack to be measured) fracture width and depth are detected using crack comprehensive tester.
Step 23, internal using Ground Penetrating Radar GPR detection pavement structure thickness, compactness, loose cavity and water content etc.
Defect.
Step 24, judge pavement cracking type.
If I class cracks, 25 are thened follow the steps, crack initial stage, using the caulking joint of SBS modified emulsifying asphalt packing, micro- table
Locate, open general sealing etc.；The crack middle and later periods measures such as spreads using hot recycling or milling again.
If class ii cracks, 26 are thened follow the steps, setting geotextiles, steel wire iso-stress absorbing film and rubber asphalt are broken
Stone anticracking buffer layer, inhibits the development of reflection crack；Using the methods of steel fibre, drilled pressure filling reinforcement base bearing capacity；Using
Paving or hot recycling means improve surface material characteristic again for plane milling；Waterproof layer and weeper drain are set；Drilled pressure filling reinforcement deep layer carries
Power is insufficient and filling slack space.
One or more embodiment through the invention, the invention has the advantages that advantage:
The invention discloses a kind of processing methods of semi-rigid asphalt pavement cracking, are examined using crack comprehensive tester
Survey the fracture width and the penetration of fracture in the crack to be measured of the semi-rigid asphalt pavement；And it is examined using Ground Penetrating Radar GPR
The testing result for obtaining each structure sheaf in the semi-rigid asphalt pavement is surveyed, and then is realized complete to semi-rigid pavement disease
The quick detection of plane system.In addition, the comprehensive fracture width, the penetration of fracture and the testing result to be measured are split to described
Seam divides cracking type；Then cracking causes of disease analysis is carried out to the crack to be measured in each cracking type；And it is based on each cracking
The corresponding layer of structure in crack to be measured and cracking causes of disease in type, carry out the crack to be measured in each cracking type
Corresponding Prevention technology.This Treatment Methods are based entirely on semi-rigid pavement feature and Cracking, according to pavement structure power
It learns design principle and proposes, have the characteristics that with strong points, durability is good, punishment significant effect, avoid pavement cracking disease
Harmful repairing repeatedly.The invention is by the non-destructive testing technologies such as crack comprehensive tester, Ground Penetrating Radar and pavement cracking causes of disease
Diagnosis and treatment technique are integrated, for semi-rigid asphalt pavement cracking Defect inspection, analyzing and diagnosing and maintenance
Maintenance provides advanced, scientific, efficient complete set technology, has preferable technical economic benefit.
Although the preferred embodiment of the application has been described, but one of ordinary skilled in the art once knows substantially
Creative concept, then additional changes and modifications may be made to these embodiments.It is wrapped so the following claims are intended to be interpreted as
It includes preferred embodiment and falls into all change and modification of the application range.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (10)
1. a kind of processing method of semi-rigid asphalt pavement cracking, which is characterized in that the described method includes:
The fracture width and crack depth in the crack to be measured of the semi-rigid asphalt pavement are detected using crack comprehensive tester
Degree；
The testing result of each structure sheaf in the semi-rigid asphalt pavement is obtained using Ground Penetrating Radar GPR detection；
The comprehensive fracture width, the penetration of fracture and the testing result divide cracking type to the crack to be measured；
Cracking causes of disease analysis is carried out to the crack to be measured in each cracking type；
Based on the corresponding layer of structure in crack to be measured and cracking causes of disease in each cracking type, in each cracking type
Crack to be measured carry out corresponding Prevention technology.
2. the method as described in claim 1, which is characterized in that described to detect the semi-rigid base using crack comprehensive tester
The fracture width and the penetration of fracture in the crack to be measured of layer bituminous pavement, specifically include:
Survey line is arranged in fracture strike along the crack to be measured, by camera on the crack comprehensive tester host and described
Crack to be measured is corresponding, and the crack picture in the crack to be measured is real-time transmitted to the crack integration test using the camera
On the host display of instrument, so that the to be measured crack of the crack comprehensive tester based on the crack picture automatic identification
Fracture profile, and the fracture width in the crack to be measured is obtained by Processing Technology in Microscopic Images analytical calculation；
By the transmitting transducer of the crack comprehensive tester, receiving energy converter, to be respectively coupled in the crack two sides to be measured symmetrical
Position, the mobile transmitting transducer and the reception energy converter in sampling process, so that the crack comprehensive tester generates
Waveform；When waveform phase jumps stop movement, using the crack comprehensive tester record the transmitting transducer with
First spacing in the crack to be measured and second spacing for receiving energy converter and the crack to be measured；Pass through ultrasonic method
First spacing and second spacing are calculated, and then obtains the penetration of fracture in the crack to be measured.
3. the method as described in claim 1, which is characterized in that the testing result contains one or more following detection
Parameter: thickness, compactness, loose cavity and water content；
The testing result that each structure sheaf in the semi-rigid asphalt pavement is obtained using Ground Penetrating Radar GPR detection,
It specifically includes:
Arrangement survey line is moved towards along the crack to be measured using Ground Penetrating Radar；
Sequential scan tests are carried out to the semi-rigid asphalt pavement, obtain Ground Penetrating Radar scan data；
The Ground Penetrating Radar scan data is analyzed according to dielectric property analytical technology, and then obtains the semi-rigid type base
The thickness of each structure sheaf, compactness, water content and loose empty situation in bituminous pavement.
4. method as claimed in claim 3, which is characterized in that
It is described that sequential scan tests are carried out to the semi-rigid asphalt pavement, Ground Penetrating Radar scan data is obtained, it is specific to wrap
It includes: sequential scan tests being carried out to the crack to be measured and its periphery predeterminable area, obtain Ground Penetrating Radar scan data；
It is described that the Ground Penetrating Radar scan data is analyzed according to dielectric property analytical technology, and then obtain described semi-rigid
The thickness of each structure sheaf, compactness, water content and loose empty situation, specifically include: according to dielectric in Base Asphalt Pavement
Specificity analysis technology analyzes the Ground Penetrating Radar scan data, and then obtains the crack to be measured and its periphery preset areas
The thickness of each structure sheaf, compactness, water content and loose empty situation in domain.
5. the method as described in claim 1, which is characterized in that the cracking Type division is that I class cracking and class ii are opened
It splits；
The I class cracking refers to sub-surface and its following part no significant defect, and cracking disease is only limitted to asphalt surface course；
The class ii cracking refers to that top course has cracked, and cracking or existing also occur in base and its following part
Other obvious shortcomings.
6. method as claimed in claim 5, which is characterized in that the crack to be measured in each cracking type carries out cracking disease
Evil genetic analysis, specifically includes:
According to the FRACTURE CHARACTERISTICS and the testing result in the crack to be measured that detection obtains, analysis, which obtains, leads to described to be measured split
The cracking causes of disease of seam, the cracking causes of disease include: road surface raw material characteristics, road surface structare layer thickness and intensity, temperature
Degree is shunk or fatigue, vehicular load fatigue, water content, compactness, loose cavity, subgrade strength and its uniformity；
In conjunction with the cracking causes of disease and the testing result in the crack to be measured, analysis determination one by one forms the cracking disease
The key factor of the origin cause of formation.
7. method as claimed in claim 6, which is characterized in that the crack in the crack to be measured obtained according to detection is special
It seeks peace the testing result, after analysis obtains the cracking causes of disease for leading to the crack to be measured, the method also includes:
According to the FRACTURE CHARACTERISTICS and the testing result in the crack to be measured that detection obtains, analysis obtains the I class cracking
Cracking causes of disease；Wherein, the cracking causes of disease of the I class cracking includes: that temperature shrinkage or temperature stress fatigue are split
Seam, vehicular load fatigue crack, pavement structure thickness or intensity are insufficient, asphalt concrete material or match ratio are improper；
According to the FRACTURE CHARACTERISTICS and the testing result in the crack to be measured that detection obtains, analysis obtains the class ii cracking
Cracking causes of disease；Wherein, the cracking causes of disease of the class ii cracking includes: that the contracting of semi-rigid type base temperature or drying shrinkage are split
Seam, the vehicular load fatigue crack, sub-surface intensity are insufficient, water content is bigger than normal, loose cavity, subgrade compaction are uneven.
8. method as claimed in claim 5, which is characterized in that the crack to be measured based in each cracking type respectively corresponds to
Layer of structure and cracking causes of disease, corresponding Prevention technology is carried out to the crack to be measured in each cracking type, comprising:
Corresponding Prevention technology is carried out for I class cracking: when the I class cracking occurs in the semi-rigid asphalt pavement
And top-crack density is when being less than pre-set density, using the caulking joint of SBS modified emulsifying asphalt packing, micro-surface area, to open general sealing a kind of
Or a variety of preventive maintenance means；When the semi-rigid asphalt pavement appearance I class cracking and fracture spacing is big
When the pre-set density, being spread again by hot recycling or milling improves pavement structure characteristic.
9. method as claimed in claim 5, which is characterized in that the crack to be measured based in each cracking type respectively corresponds to
Layer of structure and cracking causes of disease, corresponding Prevention technology is carried out to the crack to be measured in each cracking type, comprising:
Corresponding Prevention technology is carried out for class ii cracking: being opened when the class ii occurs in the semi-rigid asphalt pavement
When splitting, take one or more kinds of measures such as setting waterproof layer, rubble weeper drain, drilled pressure filling in class ii cracking
Road surface handled.
10. method as claimed in claim 5, which is characterized in that described respectively right based on the crack to be measured in each cracking type
The layer of structure and cracking causes of disease answered carry out corresponding Prevention technology to the crack to be measured in each cracking type, comprising:
Corresponding Prevention technology is carried out for class ii cracking: by the way that geotextiles, steel fibre, rubber asphalt macadam-aggregate mix are arranged
The measure of one or more of anticracking buffer layer inhibits reflection crack development.
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