CN109443957A - Asphalt Pavement Semi-rigid Base Water Damage disease non-destructive testing diagnostic method - Google Patents
Asphalt Pavement Semi-rigid Base Water Damage disease non-destructive testing diagnostic method Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 239000010426 asphalt Substances 0.000 title claims abstract description 43
- 201000010099 disease Diseases 0.000 title claims abstract description 36
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 title claims abstract description 36
- 238000002405 diagnostic procedure Methods 0.000 title claims abstract description 13
- 238000009659 non-destructive testing Methods 0.000 title claims abstract description 13
- 238000013461 design Methods 0.000 claims abstract description 16
- 230000008595 infiltration Effects 0.000 claims abstract description 12
- 238000001764 infiltration Methods 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 abstract description 11
- 239000010410 layer Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/303—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated only by free-falling weight
-
- 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
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0039—Hammer or pendulum
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
The present invention relates to a kind of non-destructive testing diagnostic methods of Asphalt Pavement Semi-rigid Base Water Damage disease, comprising the following steps: a, actual measurement Asphalt Pavement Semi-rigid Base water content；B, Asphalt Pavement Deflection value is surveyed；If c, the semi-rigid type base water content that step a is measured is higher than normal moisture content, and the deflection value that step b is measured is higher than design value, then judging the Asphalt Pavement Semi-rigid Base, there are Water Damage diseases.The present invention uses lossless detection method, measures bituminous pavement bearing capacity, water-content indicator, accurately determines position, range and degree that semi-rigid type base Water Damage occurs, and the source of water is determined by measuring bituminous pavement infiltration coefficient, finds disease causes.Scientific basis is provided to formulate the specific aim maintenance plan of bituminous pavement.
Description
Technical field
The present invention relates to road traffic technical field, in particular to a kind of Asphalt Pavement Semi-rigid Base Water Damage disease without
Damage quickly identifies and determines the effective ways at position of its generation, range, degree and reason.
Background technique
In China area of heavy rainfull, Water Damage is one of bituminous pavement Major Diseases, and it is that bituminous pavement is general that maintenance costs is high
The several times of disease, therefore prevent and control the important channel that Water Damage scale is effectively save maintenance costs.Semi-rigid type base water
Damage is one of bituminous pavement common quality defect, due to being in Lu Biao hereinafter, having certain concealment.
Water is the inducement of semi-rigid type base damage, and mainly there are two aspects in the source of water, first is that rainwater passes through bituminous pavement
It is seeped under crack or gap.Second is that part excavation section level of ground water is excessively high, from lower infiltration semi-rigid type base.Water enters semi-rigid base
Behind layer inside, under water and vehicular load collective effect, high pressure water constantly washes away semi-rigid type base, causes base to fall grain, in turn
It is loosely formed mud, intensity is caused to gradually reduce, reaches when being not enough to undertake vehicular load and fragmentation or loose occurs, it is serious to draw
Base's frost boiling is played, while causing the reduction of base's bearing capacity, the serious plant diseases such as check crack, depression, pit slot, serious shadow occur for asphalt surface course
Road-ability and safety are rung, maintaining cost is also resulted in and is significantly increased.Semi-rigid type base Water Damage has the feature that
(1) moisture content is significantly higher；
(2) bituminous pavement bearing capacity reduces；
(3) fast-growth, quickly to circumferential expansion, and extended with bituminous pavement is write using the time, Water Damage risk constantly rises
It is high；
(4) there is certain concealment, since the semi-rigid type base under bituminous pavement occurs for " lesion ", be difficult in early days.
To eliminate the potential disease of bituminous pavement in time, needs that advanced technology means is taken to identify potential risk in time, identify
Its happening part, range, degree and reason prevent disease Quick Extended in order to take preventive maintenance measure, to ensure drip
Green pavement quality, eliminates safe hidden trouble, effectively save maintenance costs.
Summary of the invention
The technical problem to be solved by the present invention is to solve the problems, such as Asphalt Pavement Semi-rigid Base Water Damage disease screening, know
Its other happening part, range, degree and reason provide accurate foundation to formulate bituminous pavement specific aim maintenance plan.
In order to solve the above technical problems, the invention proposes a kind of lossless inspections of Asphalt Pavement Semi-rigid Base Water Damage disease
Survey diagnostic method, comprising the following steps:
A, Asphalt Pavement Semi-rigid Base water content is surveyed；
B, Asphalt Pavement Deflection value is surveyed；
If c, the semi-rigid type base water content that step a is measured is higher than normal moisture content, and the deflection value that step b is measured is higher than
Design value, then judging the Asphalt Pavement Semi-rigid Base, there are Water Damage diseases.
Further, the Asphalt Pavement Semi-rigid Base Water Damage disease non-destructive testing diagnostic method, further include with
Lower step:
D, it is loose with the presence or absence of base to measure the semi-rigid type base for the intact degree for detecting the semi-rigid type base.
More preferably, the Asphalt Pavement Semi-rigid Base Water Damage disease non-destructive testing diagnostic method, further includes following
Step:
E, the infiltration coefficient of the bituminous pavement is detected, if infiltration coefficient is greater than 30 ~ 80ml/min, judgement causes semi-rigid
The Free water of base's Water Damage disease derives from bituminous pavement surface；Otherwise judgement causes oneself of semi-rigid type base Water Damage disease
By underground water of the water under the semi-rigid type base.
Preferably, the actual measurement Asphalt Pavement Semi-rigid Base water content, using infrared detecting water instrument.
Preferably, the actual measurement Asphalt Pavement Deflection value, using drop hammer deflection meter.
Preferably, the integrity of the detection semi-rigid type base, using Ground Penetrating Radar.
The present invention can accurately identify position, range, degree and the reason of the generation of semi-rigid type base Water Damage disease, to formulate
Specific aim maintenance plan provides scientific basis, prevents disease Quick Extended, to ensure bituminous pavement quality, eliminates safe hidden trouble,
Effectively save maintenance costs.
Detailed description of the invention
Technical solution of the present invention is further described in detail with reference to the accompanying drawings and detailed description.
Fig. 1 is after semi-rigid type base Moisture Damage disease occurs, and the pictorial diagram of base's frost boiling occurs in bituminous pavement.
Fig. 2 be occur semi-rigid type base Moisture Damage disease after, asphalt surface course occur occur check crack, depression, pit slot material object
Figure.
Specific embodiment
A kind of Asphalt Pavement Semi-rigid Base Water Damage disease non-destructive testing diagnostic method, comprising the following steps:
A, Asphalt Pavement Semi-rigid Base water content is surveyed using infrared detecting water instrument；
B, Asphalt Pavement Deflection value is surveyed using drop hammer deflection meter；
If the semi-rigid type base water content that c, step a is measured is higher than normal moisture content, and the deflection value ratio that step b is measured is set
Evaluation is high, then judging the Asphalt Pavement Semi-rigid Base, there are Water Damage diseases；
D, the intact degree that the semi-rigid type base is detected using Ground Penetrating Radar is measured the semi-rigid type base and dredged with the presence or absence of base
Pine；
E, the infiltration coefficient of the bituminous pavement is detected, if infiltration coefficient is greater than 30 ~ 80ml/min, judgement causes semi-rigid
The Free water of base's Water Damage disease derives from bituminous pavement surface；Otherwise judgement causes oneself of semi-rigid type base Water Damage disease
By underground water of the water under the semi-rigid type base.
The principle of above-mentioned measurement method is that water is the key factor of semi-rigid type base Water Damage, normal condition Semi-rigid
Moisture content, if there is a large amount of Free water, will cause flowing pressure to rush between 3 ~ 8% under Vehicle Load
Base is brushed, base is caused to fall grain or loose, it is thus determined that it is to determine having for its possibility occurrence that whether its water content is obviously higher
Effect approach.
Water Damage once occurs for semi-rigid type base, and intensity will be reduced quickly, causes the reduction of bituminous pavement bearing capacity, drip
Green pavement deflection value is higher than design value, just can determine that base is damaged when being more than certain limit.When base's damage is serious just
It will appear frost boiling phenomenon.
There is the loose situation of base after Water Damage occurs in semi-rigid type base, and detects identification base's state by Ground Penetrating Radar,
Whether occur loose.If there is loose, then specific aim is needed to rebuild when repairing Water Damage.
Free water derives from road table rainwater or underground water in semi-rigid type base, surveys bituminous pavement infiltration coefficient, if
More than design permissible value or bituminous pavement, there are cracks to be considered as Free water from bituminous pavement surface；Otherwise with regard to source
In underground water.The accurate source for determining Free water, and take the source port of specific aim maintenance measure blocking Free water, Fang Kegen
Person's character solves the problems, such as semi-rigid type base Water Damage.
More than integrated application four kinds of non-destructive testing steps, it will be able to quick and precisely determine whether semi-rigid type base water damage occurs
It is bad, the source of Water Damage position and Free water.
Example 1: certain Structural Design of Highway Asphalt Pavement are as follows: upper layer 4cmAC-13, middle surface layer are 6cmAC-20, below
Layer is 8cmAC-25, and base is 54cm cement stabilized grading crushed stones.The normal design value of moisture content is 4 ~ 8%, and scene uses
Infrared detecting water instrument observed watercut is 8.6%；Scene uses drop hammer deflection meter detection Asphalt Pavement Deflection value for 0.26mm, greatly
In design value 0.19mm.Illustrate that semi-rigid type base water content is higher, bearing capacity reduces；Determine that water damage has occurred for semi-rigid type base
It is bad.Ground Penetrating Radar detection discovery base is loose.Comprehensive analysis show that maintenance plan is to excavate the semi-rigid type base damaged and drip
Green surface layer, then according to former design recovery semi-rigid type base and asphalt surface course.
Example 2: certain Structural Design of Highway Asphalt Pavement are as follows: upper layer 4cmSMA-13, middle surface layer are 6cmAC-20, under
Surface layer is 8cmAC-25, and base is 36cm cement stabilized grading crushed stones and 18cm graded broken stone.Through on-site test bituminous pavement vehicle
It is 18mm that rut, which accumulates depth, is more than 8 ~ 15mm of accumulated deformation range.It is 0.18mm through on-site test deflection value, it is curved is less than design
Heavy value；Infrared detecting water instrument detects water content 4%, is less than optimum moisture content 5.2%；Determine that water damage does not occur for semi-rigid type base at this
It is bad, but Ground Penetrating Radar detection base is loose, but it is not caused by Water Damage that this base is loose.Base, which gathers materials, isolates hidden danger
It will cause that base is loose, and base's isolation that gathers materials is often that there are the characterizations of mass defect during base layer construction.Comprehensive descision
Gather materials there are base and isolates potential disease.Cement injection paste-making method can be taken to fill up to gather materials and isolate cavity, improve base's integrity,
And water circulating pathway is eliminated, it prolongs its service life.
Example 3: certain Structural Design of Highway Asphalt Pavement are as follows: upper layer 4cmAC-13, middle surface layer are 6cmAC-20, below
Layer is 8cmAC-25, and base is 54cm cement stabilized grading crushed stones.On-site test Asphalt Pavement Deflection value is 0.28mm, greater than setting
Evaluation 0.192mm；Infrared detecting water instrument observed watercut is 9.2%, higher than optimum moisture content by 4.4%, is greater than 4 ~ 8% design value, says
Bright semi-rigid type base water content is higher than design value, and bearing capacity reduces, and determines that Water Damage has occurred in it.Continue to measure asphalt surface course infiltration
Water coefficient investigates thoroughly water source.On-site test asphalt surface course infiltration coefficient value is 52ml/min, is less than 80 ml/min of design value, says
Free water is not derived from bituminous pavement surface in bright semi-rigid type base, and is derived from underground water.Maintenance plan is to excavate damage
Bad semi-rigid type base and asphalt surface course plants in base and increases drainage channel so that Free water in semi-rigid type base is discharged, and deepen
Gutter separates Groundwater infiltration semi-rigid type base channel, then according to former design recovery semi-rigid type base and asphalt surface course.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to preferred embodiment, those skilled in the art should understand that, it can be right
Technical solution of the present invention is modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (6)
1. a kind of Asphalt Pavement Semi-rigid Base Water Damage disease non-destructive testing diagnostic method, which is characterized in that including following step
It is rapid:
A, Asphalt Pavement Semi-rigid Base water content is surveyed；
B, Asphalt Pavement Deflection value is surveyed；
If c, the semi-rigid type base water content that step a is measured is higher than normal moisture content, and the deflection value that step b is measured is higher than
Design value, then judging the Asphalt Pavement Semi-rigid Base, there are Water Damage diseases.
2. Asphalt Pavement Semi-rigid Base Water Damage disease non-destructive testing diagnostic method according to claim 1, feature
It is, further comprising the steps of:
D, it is loose with the presence or absence of base to measure the semi-rigid type base for the intact degree for detecting the semi-rigid type base.
3. Asphalt Pavement Semi-rigid Base Water Damage disease non-destructive testing diagnostic method according to claim 1 or 2, special
Sign is, further comprising the steps of:
E, the infiltration coefficient of the bituminous pavement is detected, if infiltration coefficient is greater than 30 ~ 80ml/min, judgement causes semi-rigid
The Free water of base's Water Damage disease derives from bituminous pavement surface；Otherwise judgement causes oneself of semi-rigid type base Water Damage disease
By underground water of the water under the semi-rigid type base.
4. according to claim 1 to Asphalt Pavement Semi-rigid Base Water Damage disease non-destructive testing diagnostic method described in one of 3,
It is characterized in that, the actual measurement Asphalt Pavement Semi-rigid Base water content, using infrared detecting water instrument.
5. according to claim 1 to Asphalt Pavement Semi-rigid Base Water Damage disease non-destructive testing diagnostic method described in one of 3,
It is characterized in that, the actual measurement Asphalt Pavement Deflection value, using drop hammer deflection meter.
6. Asphalt Pavement Semi-rigid Base Water Damage disease non-destructive testing diagnostic method according to claim 2, feature
It is, the intact degree of the detection semi-rigid type base, using Ground Penetrating Radar.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811048866.4A CN109443957A (en) | 2018-09-10 | 2018-09-10 | Asphalt Pavement Semi-rigid Base Water Damage disease non-destructive testing diagnostic method |
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| CN201811048866.4A CN109443957A (en) | 2018-09-10 | 2018-09-10 | Asphalt Pavement Semi-rigid Base Water Damage disease non-destructive testing diagnostic method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205909A (en) * | 2019-07-04 | 2019-09-06 | 交通运输部公路科学研究所 | A kind of pavement structure flexure based on bitumen layer equivalent temperature means target temperature correction |
| CN110348153A (en) * | 2019-07-17 | 2019-10-18 | 上海市城市建设设计研究总院（集团）有限公司 | A kind of composite pavement damage method of discrimination |
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| CN110205909A (en) * | 2019-07-04 | 2019-09-06 | 交通运输部公路科学研究所 | A kind of pavement structure flexure based on bitumen layer equivalent temperature means target temperature correction |
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Application publication date: 20190308 |