CN107389554A - A kind of distress in concrete self-healing detection method - Google Patents
A kind of distress in concrete self-healing detection method Download PDFInfo
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- CN107389554A CN107389554A CN201710596912.3A CN201710596912A CN107389554A CN 107389554 A CN107389554 A CN 107389554A CN 201710596912 A CN201710596912 A CN 201710596912A CN 107389554 A CN107389554 A CN 107389554A
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- 239000004567 concrete Substances 0.000 title claims abstract description 75
- 238000001514 detection method Methods 0.000 title claims abstract description 61
- 230000009429 distress Effects 0.000 title claims abstract description 39
- 239000000835 fiber Substances 0.000 claims abstract description 33
- 230000003287 optical effect Effects 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 16
- 238000012946 outsourcing Methods 0.000 claims abstract description 4
- 238000005336 cracking Methods 0.000 claims description 31
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 13
- 238000012360 testing method Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 7
- 239000013307 optical fiber Substances 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 230000001172 regenerating effect Effects 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 238000001228 spectrum Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000013100 final test Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
-
- 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
- G01N2203/006—Crack, flaws, fracture or rupture
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses being detected under a kind of distress in concrete self-healing detection method, including selection fracture open state, minimum and maximum depth and the width position of detection position are drawn in Crack Detection receiving instrument；Component surface location of cracks is observed, estimates and draws crack pattern, record form, bar number, position, length and the trend in crack；Fiber-optic grating sensor is laid in fissured structure, a kink metal catheter is fixed outside fibre optical sensor, together in embedded concrete structure, metal catheter is taken out or one metal catheter more consistent with concrete expansion coefficient of fibre optical sensor outsourcing, outside load are delivered on fibre optical sensor by metal catheter and equally measure corresponding data.Dynamically conducted by corresponding inductor the invention enables optic fibre wire, simple, easy to use, the data dynamic accuracy height of detection is compared in the operating process of whole device.
Description
Technical field
The invention belongs to distress in concrete detection device technology field, more particularly to a kind of distress in concrete self-healing to detect
Method.
Background technology
At present, the development of high intensity, technology of high performance concrete, binder materials, the use of additive and extensive mixed
Coagulating the rapid construction of soil makes early-age crack turn into the problem of most being merited attention in concrete works application.Concrete bracing master
To depend on two aspect factors：On the one hand it is intrinsic such as contraction, modulus of elasticity, tensile strength and the relaxation property of creeping of material
The influence of matter, these properties are all closely related with course of hardening, are accompanied by the development of age and change；The opposing party
Face is external factor, and the shape, institute such as structural elements are constrained, and environment temperature and humidity condition etc., therefore, understand concrete
Ess-strain and temperature development rule under early stage constraints, foundation can be provided to evaluate the shrinkage cracking of concrete.
In summary, the problem of prior art is present be：The research of the existing concrete characteristic, it is mainly by pre-
Branch concrete block, the situation inspection in crack is then carried out, or is conducted by filling optical fiber, but existing optical fiber is filled out
Deficiency operationally is buried, often causes final testing result not reach the result of an accuracy.
The content of the invention
The problem of existing for prior art, the invention provides a kind of distress in concrete self-healing detection to fly.
The present invention is achieved in that a kind of distress in concrete self-healing detection method, the distress in concrete self-healing
Detection method includes：
Charge signal is gathered, sensor obtains information at detected concrete crack, tested non electrical quantity is transformed to electricity,
Charge signal is converted into voltage signal by signal condition could access data collecting card；
Charge signal is converted to voltage signal by integrating circuit, then amplified, analog switch is directly accessed data acquisition
Card；The analog signal directly obtained from measurand is converted into data signal；The digital optical signal exported by Transmission Fibers
In the silicon photoelectric diode that receiving terminal passes through in device with regenerative circuit converting optical signals into digital electrical signals, then by testing
The output end output of system；
Waveform is shown and signal analysis is realized by tab Selection Floater；Corresponding waveform shows, spectrometer
Calculate and test result is shown in tab；Mainly shown in main interface comprising waveform, data preserve, parameter setting and
Control zone.
Further, the distress in concrete self-healing detection method includes：
(1) select to detect under fracture open state, the minimum and maximum of detection position is drawn in Crack Detection receiving instrument
Depth and width position；Component surface location of cracks is observed, estimates and draws crack pattern, record form, the bar in crack
Number, position, length and trend；
(2) fiber-optic grating sensor is laid in fissured structure, fixes a kink metal catheter outside fibre optical sensor, and one
Rise in embedded concrete structure, metal catheter is taken out or by fibre optical sensor outsourcing one and concrete expansion coefficient compared with one
The metal catheter of cause, outside load are delivered on fibre optical sensor by metal catheter and equally measure corresponding data.
Further, in described (1) at location side concrete surface it is clean and tidy, crack both sides can test surfaces width point
It Bu little Yu not estimate that seam is deep.
Further, the sensor of embedment and the requirement to be detected of Crack Detection receiving instrument are consistent with target in described (2),
When detecting the crack of concrete, fiber-optic grating sensor is arranged on crack generation position and can not be parallel with crack.
Further, the distress in concrete self-healing detection method also includes：Crack Detection result is single with fracture width
Test point width average value represents with position penetration of fracture value is examined, and is aided with diagram and indicates examined position；Auxiliary Use BJLF-1
Type distress in concrete comprehensive detector measures Record Comparison by colored micro- amplification probe fracture width.
Another object of the present invention is to provide a kind of distress in concrete of the distress in concrete self-healing detection method
Self-healing detection means, the distress in concrete self-healing detection means are provided with：Flat board cracking device, the cracking edge of a knife, optical fiber
Wire and Crack Detection receiving instrument；
The surrounding of the flat board cracking device is correspondingly arranged as longitudinal frame and horizontal frame, is vertically pacified between horizontal frame
It is equipped with the cracking edge of a knife；Groove is formed between the cracking edge of a knife, the upper end transverse direction arranged orthogonal of the cracking edge of a knife has steel tube body,
The inside of steel tube body is provided through optic fibre wire, and the other end of the optic fibre wire is connected with Crack Detection receiving instrument.
Further, the bottom of the flat board cracking device is arranged to groove base plate, is mixed in groove base plate filled with concrete
Compound material；Upper ledge edge is provided with longitudinal frame.
Further, the upper top of the cracking edge of a knife is edge on the edge of a knife；Steel tube body is vertically disposed on the edge of a knife along upper.
Further, the groove includes lower groove layer and upper groove layer；Concrete is sequentially filled in lower groove layer and upper groove layer to mix
Compound material.
Further, the height of the horizontal frame is higher than the height of longitudinal frame.
Further, the cracking edge of a knife has been placed equidistant seven, and eight grooves are formed between the edge of a knife that ftractures.
Advantages of the present invention and good effect are：Crack self-healing mistake is carried out to concrete by Crack Detection receiving instrument
The dynamic monitoring of optic fibre wire in journey, with reference to flat board cracking device, by optic fibre wire by through steel tube body, then using concrete
Mixed material carries out landfill covering, then extracts steel tube body out, is then uniformly vibrated using tamper so that optic fibre wire
Dynamically conducted by corresponding inductor, simple, easy to use, the number of detection is compared in the operating process of whole device
It is high according to dynamic accuracy.
Brief description of the drawings
Fig. 1 is the structural representation that the embodiment of the present invention provides distress in concrete self-healing detection means；
Fig. 2 is the cross-sectional view of distress in concrete self-healing detection means provided in an embodiment of the present invention；
Fig. 3 is the Crack Detection attachment structure signal of distress in concrete self-healing detection means provided in an embodiment of the present invention
Figure；
Fig. 4 is distress in concrete self-healing detection method flow chart provided in an embodiment of the present invention；
In figure：1st, flat board cracking device；1-1, groove base plate；2nd, longitudinal frame；2-1, upper ledge edge；3rd, horizontal frame；4、
Ftracture the edge of a knife；Edge on 4-1, the edge of a knife；5th, groove；5-1, lower groove layer；5-2, upper groove layer；6th, steel tube body；7th, optic fibre wire；8th, crack
Detect receiving instrument.
Embodiment
In order to further understand the content, features and effects of the present invention, hereby enumerating following examples, and coordinate accompanying drawing
Describe in detail as follows.
The structure of the present invention is explained in detail below in conjunction with the accompanying drawings.
As shown in Figure 1-Figure 3, distress in concrete self-healing detection means provided in an embodiment of the present invention ftractures including flat board
Device 1, longitudinal frame 2, horizontal frame 3, the cracking edge of a knife 4, groove 5, steel tube body 6, optic fibre wire 7 and Crack Detection receiving instrument
8。
The surrounding of flat board cracking device 1 is correspondingly arranged as longitudinal frame 2 and horizontal frame 3, and vertical between horizontal frame 3
The cracking edge of a knife 4 is mounted with, the height of horizontal frame 3 is higher than the height of longitudinal frame 2 so that concrete obtains filling out for two levels
Fill determination；Groove 5 is formed between the cracking edge of a knife 4, the cracking edge of a knife 4 has been placed equidistant seven, and forms eight between the edge of a knife 4 that ftractures
Groove 5, the landfill face of optic fibre wire 7 can be caused to be improved so that final testing result is more accurate；Ftracture the edge of a knife
4 upper end transverse direction arranged orthogonal has steel tube body 6, and the inside of steel tube body 6 is provided through optic fibre wire 7；Will by steel tube body 6
Optic fibre wire 7 is filled in concrete mix material, and the other end of optic fibre wire 7 is connected with Crack Detection receiving instrument 8.
The bottom of flat board cracking device 1 is arranged to groove base plate 1-1, and is mixed on groove base plate 1-1 filled with concrete
Material, upper ledge is provided with along 2-1 on longitudinal frame 2.
Groove 5 mainly includes lower groove layer 5-1 and upper groove layer 5-2, and has been sequentially filled in lower groove layer 5-1 and upper groove layer 5-2
Concrete mix material.
The upper top of the cracking edge of a knife 4 is to be vertically disposed on the edge of a knife along 4-1, its steel tube body 6 on the edge of a knife along 4-1.
To include as shown in figure 4, the embodiment provides distress in concrete self-healing detection method：
S401：Selection fracture open state under detect, drawn in Crack Detection receiving instrument detection position minimum and most
Big depth and width position；Observe component surface location of cracks, estimate and draw crack pattern, record crack form,
Bar number, position, length and trend；
S402：Fiber-optic grating sensor is laid in fissured structure, and a kink metal catheter is fixed outside fibre optical sensor,
Together in embedded concrete structure, by metal catheter take out or by fibre optical sensor outsourcing one and concrete expansion coefficient compared with
Consistent metal catheter, outside load are delivered on fibre optical sensor by metal catheter and equally measure corresponding data.
(1) at location side concrete surface it is clean and tidy, crack both sides can test surfaces width respectively not less than estimating
Meter seam is deep.
(2) sensor of embedment and the requirement to be detected of Crack Detection receiving instrument are consistent with target in, detect concrete
Crack when, fiber-optic grating sensor is arranged on crack and position and can not be parallel with crack occurs.
Distress in concrete self-healing detection method also includes：Crack Detection result is put down with the single test point width of fracture width
Average represents with position penetration of fracture value is examined, and is aided with diagram and indicates examined position；Auxiliary Use BJLF-1 type distress in concretes
Comprehensive detector measures Record Comparison by colored micro- amplification probe fracture width.
The present invention is before using the distress in concrete self-healing detection means, it is to be understood that whole flat board cracking device 1
Use step, concrete mix material is filled in the lower groove layer 5-1 in groove 5 first, is filled into concrete mix
Then steel tube body 6 is vertically disposed in the cracking edge of a knife 4 by material with being mutually flush (can be slightly higher) along 4-1 on the edge of a knife on the cracking edge of a knife 4
On, then optic fibre wire 7 is applied in steel tube body 6, is then followed by filling concrete mix material in the upper of steel tube body 6
End, is uniformly vibrated using tamper, is then extracted steel tube body 6, the other end and Crack Detection of its optic fibre wire 7
Receiving instrument 8 is attached effect, is finally carried out concrete surface using plasterer's trowel floating, completes whole optical fiber like this and leads
The landfill work of line 7, dynamic connecting detection is carried out with that, carry out the collection of the data message of correlation.
Sensor belongs to charge type sensor in the device of the present invention, and collection is charge signal, and sensor mixes from tested
Information is obtained at solidifying soil cracking seam, tested non electrical quantity is transformed to electricity, it is therefore necessary to change charge signal by signal condition
Data collecting card could be accessed for voltage signal.Charge signal is converted to voltage signal, then amplified, simulation by integrating circuit
The modules such as switch can be directly accessed data collecting card.What the device sensor obtained is analog signal mostly, and computer can not
Processing, it is therefore desirable to by sensor by converter be that can just be transferred in computer after capture card to be handled.From tested pair
As the upper signal directly obtained is analog signal mostly, because computer can only handle data signal, it is necessary to which sensor is exported
Analog signal be converted into data signal for its use.By the digital optical signal of Transmission Fibers output in receiving terminal by filling
Silicon photoelectric diode in putting is defeated into digital electrical signals, then by the output end of experimental system converting optical signals with regenerative circuit
Go out.It illustrates that such sensor can realize the monitoring of structural strain state to a certain extent；And the appearance in crack can be led
Cause sensor fiber to pass the mutation of light ability, and perceive the generation in crack and record crack developing process.The journey of the invention device
Waveform is shown in sequence and signal analysis is realized by tab Selection Floater.Corresponding waveform shows, frequency spectrum calculate with
And test result is shown in tab.Mainly shown in main interface comprising waveform, data preserve, parameter setting and control
Area.
It is described above to be only the preferred embodiments of the present invention, any formal limitation not is made to the present invention,
Every technical spirit according to the present invention belongs to any simple modification made for any of the above embodiments, equivalent variations and modification
In the range of technical solution of the present invention.
Claims (10)
- A kind of 1. distress in concrete self-healing detection method, it is characterised in that the distress in concrete self-healing detection method bag Include：Charge signal is gathered, sensor obtains information at detected concrete crack, tested non electrical quantity is transformed to electricity, passed through Charge signal is converted to voltage signal by signal condition could access data collecting card；Charge signal is converted to voltage signal by integrating circuit, then amplified, analog switch is directly accessed data collecting card；From The analog signal directly obtained in measurand is converted into data signal；The digital optical signal exported by Transmission Fibers is receiving The silicon photoelectric diode that end is passed through in device with regenerative circuit converting optical signals into digital electrical signals, then by experimental system Output end exports；Waveform is shown and signal analysis is realized by tab Selection Floater；Corresponding waveform shows, frequency spectrum calculate with And test result is shown in tab；Mainly shown in main interface comprising waveform, data preserve, parameter setting and control Area.
- 2. distress in concrete self-healing detection method as claimed in claim 1, it is characterised in that the distress in concrete self-healing Closing detection method includes：(1) select to detect under fracture open state, the minimum and maximum depth of detection position is drawn in Crack Detection receiving instrument And width position；Component surface location of cracks is observed, estimates and draws crack pattern, records the form in crack, bar number, position Put, length and trend；(2) fiber-optic grating sensor is laid in fissured structure, and a kink metal catheter is fixed outside fibre optical sensor, is buried together Enter in concrete structure, by metal catheter taking-up or fibre optical sensor outsourcing one is more consistent with concrete expansion coefficient Metal catheter, outside load are delivered on fibre optical sensor by metal catheter and equally measure corresponding data.
- 3. distress in concrete self-healing detection method as claimed in claim 2, it is characterised in that in (1) at location by Side concrete surface it is clean and tidy, crack both sides can test surfaces width it is deep not less than estimation seam respectively.
- 4. distress in concrete self-healing detection method as claimed in claim 2, it is characterised in that the biography of embedment in (2) Sensor and the requirement to be detected of Crack Detection receiving instrument are consistent with target, when detecting the crack of concrete, optical fiber grating sensing Device is arranged on crack generation position and can not be parallel with crack.
- 5. distress in concrete self-healing detection method as claimed in claim 2, it is characterised in that the distress in concrete self-healing Closing detection method also includes：Crack Detection result with the single test point width average value of fracture width and the inspection position penetration of fracture Value represents, is aided with diagram and indicates examined position；Auxiliary Use BJLF-1 type distress in concrete comprehensive detectors pass through colored micro- Amplification probe fracture width measures Record Comparison.
- 6. a kind of distress in concrete self-healing detection means of distress in concrete self-healing detection method as claimed in claim 1, Characterized in that, the distress in concrete self-healing detection means is provided with：Flat board cracking device, the cracking edge of a knife, optic fibre wire With Crack Detection receiving instrument；The surrounding of the flat board cracking device is correspondingly arranged as longitudinal frame and horizontal frame, there is positioned vertical between horizontal frame Ftracture the edge of a knife；Groove is formed between the cracking edge of a knife, the upper end transverse direction arranged orthogonal of the cracking edge of a knife has steel tube body, steel pipe The inside of body is provided through optic fibre wire, and the other end of the optic fibre wire is connected with Crack Detection receiving instrument.
- 7. distress in concrete self-healing detection means as claimed in claim 6, it is characterised in that the flat board cracking device Bottom is arranged to groove base plate, and concrete mix material is filled with groove base plate；Upper ledge edge is provided with longitudinal frame.
- 8. distress in concrete self-healing detection means as claimed in claim 6, it is characterised in that the upper top of the cracking edge of a knife Hold as edge on the edge of a knife；Steel tube body is vertically disposed on the edge of a knife along upper.
- 9. distress in concrete self-healing detection means as claimed in claim 6, it is characterised in that the groove includes lower groove layer With upper groove layer；Concrete mix material has been sequentially filled in lower groove layer and upper groove layer.
- 10. distress in concrete self-healing detection means as claimed in claim 6, it is characterised in that the height of the horizontal frame Degree is higher than the height of longitudinal frame；The cracking edge of a knife has been placed equidistant seven, and eight grooves are formed between the edge of a knife that ftractures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710596912.3A CN107389554A (en) | 2017-07-20 | 2017-07-20 | A kind of distress in concrete self-healing detection method |
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| CN201710596912.3A CN107389554A (en) | 2017-07-20 | 2017-07-20 | A kind of distress in concrete self-healing detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344860A (en) * | 2017-12-19 | 2018-07-31 | 同济大学 | The method for characterizing cement-based material surface crack self-healing effect based on healing bulk product |
| CN108828198A (en) * | 2018-06-12 | 2018-11-16 | 北京工业大学 | Early concrete crack-induced test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108344860A (en) * | 2017-12-19 | 2018-07-31 | 同济大学 | The method for characterizing cement-based material surface crack self-healing effect based on healing bulk product |
| CN108828198A (en) * | 2018-06-12 | 2018-11-16 | 北京工业大学 | Early concrete crack-induced test device |
| CN108828198B (en) * | 2018-06-12 | 2021-08-20 | 北京工业大学 | Early concrete crack induction testing device |
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