CN108445074A - The verifying attachment and method of distress in concrete repairing effect - Google Patents
The verifying attachment and method of distress in concrete repairing effect Download PDFInfo
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- CN108445074A CN108445074A CN201810111670.9A CN201810111670A CN108445074A CN 108445074 A CN108445074 A CN 108445074A CN 201810111670 A CN201810111670 A CN 201810111670A CN 108445074 A CN108445074 A CN 108445074A
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- 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
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
- G01N27/84—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields by applying magnetic powder or magnetic ink
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/26—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring depth
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Abstract
The invention discloses a kind of verifying attachments and method of distress in concrete repairing effect, its device includes bearing, measured hole, depth rod and master controller, via of the depth rod through bearing is inserted into measured hole, depth rod is equipped with magnetic probe, the verifying attachment further includes depth measurement device, magnetic probe and depth measurement device with master controller data connection；Its method it is critical that the magnetic grouting material of configuration and mend crack, apply externally-applied magnetic field, be fitted the relational graph of magnetic induction and depth and obtain inflection point.What the device and method can accurately measure the crack of concrete structure is actually repaired depth.
Description
Technical field
The present invention relates to reinforced concrete structures to repair field, is especially that one kind is used to that distress in concrete reparation to be examined to imitate
The device and method of fruit.
Background technology
Concrete material is that current dosage is maximum, uses due to having the advantages that easy for construction, resistance to compression fire resisting, practical flexible
Most wide one of the construction material in way.But concrete material is during military service, due to plastic shrinkage, drying shrinkage, malformation, outer lotus
The various internal and external factors effects such as load will produce structural and non-structural crack.Above-mentioned crack generates and extends to a certain extent
Afterwards, if not repairing in time, by the safety durable and normal use of Damage Structure, if leaving its extension perforation, calamity is resulted even in
The accident of difficulty.Currently, being usually to be poured into inside crack as grouting material using cement mortar or epoxy resin, reach recovery structure
The purpose of globality, durability and water proofing property.
The practice of construction process that the prior art repairs crack is that technical staff actually opens according to the crack of concrete surface
Exhibition situation by virtue of experience estimates depth, and estimates depth substantially according to this and drills through oblique injected hole, recycles the injected hole to splitting
The internal grouting of seam, when slurry is oozed out from fracture faces, then it is assumed that mend slurry and complete.Since the crack is located in concrete structure
Portion, in irregular shape, width disunity, even there is the closing in that width drops suddenly in crack stage casing, so grouting material is usually not
The most deep position in crack is reached, so the restorative procedure of the above-mentioned prior art, the depth that is actually repaired in crack is had no way of at all
Know, practical repair efficiency can not naturally also be learnt.That is, the prior art objectively lacks effective measurement or assessment
The effect of means fracture reparation i.e. the practical repairing depth in crack are accurately and effectively evaluated.
Certainly, also there is technical staff to propose to measure the practical imagination for being repaired depth in crack using ultrasonic wave, but exist
More problem causes the measurement result of ultrasonic wave inaccurate.First, the rigidity of component materials of concrete is uneven, is also commonly present more
The honeycomb structure in gap generates various adverse effects to ultrasonic wave conduction；Secondly, fracture shape is irregular, bending and closing in
It is more, measurement result mistake can be directly resulted in；In addition, ultrasound examination is easily also influenced by inside concrete reinforcing bar, Probe arrangement
Mode also will have a direct impact on the accuracy of measurement result and the applicability of method.To sum up, still lack effective means at present to know
The practical repairing depth in crack.
Invention content
The invention solves a technical problem be to provide a kind of reality in the crack that can accurately measure concrete structure
Border is repaired the verifying attachment of the distress in concrete repairing effect of depth.
A kind of technical solution of the present invention is to provide a kind of verifying attachment of distress in concrete repairing effect, it is wrapped
Measured hole include and be fixed on the bearing of concrete structural surface, drilled through inside concrete structure and near crack is used
In stretching into depth rod and master controller in measured hole, bearing is equipped with the via being connected to measured hole, and depth rod is inserted through via
Enter in measured hole, the head of depth rod is equipped with magnetic probe, which further includes the insertion depth for the bar that fathoms
Depth measurement device, magnetic probe and depth measurement device with master controller data connection.
The invention solves another technical problem be to provide a kind of crack that can accurately measure concrete structure
Actually it is repaired the method for examining distress in concrete repairing effect of depth.
Another technical solution of the present invention is to provide a kind of side for examining distress in concrete repairing effect
Method, step include：
Magnetic-particle, activating agent are mixed with conventional grout material, form magnetic grouting material；
Concrete structural surface near crack drills through measured hole, and installs inspection dress in concrete structural surface
It sets；
Apply externally-applied magnetic field by the crack of magnetic grouting material penetration concrete structure, and in filling process, makes magnetic filling
Slurry is magnetized；
Depth rod is inserted into measured hole, and depth rod, along during measured hole advances, depth measurement device in real time will be deep
The insertion depth of degree bar is sent to master controller, and the magnetic induction measured in real time is also sent to by the magnetic probe of depth rod front end
Master controller；
Master controller monitors magnetic induction in real time, and as depth rod is advanced, magnetic induction is also in certain amplitude
Concussion, when magnetic induction appearance significantly decays, master controller will recognise that normal concussion and significantly turning between decaying
Point, the insertion depth of the corresponding depth rod of the inflection point, the as practical repairing depth in crack.
The verifying attachment and the method for inspection of distress in concrete repairing effect of the present invention compared with prior art, have following excellent
Point.
The principle of the verifying attachment and method is that magnetic-particle, activator, base load liquid are first mixed into magnetic liquid and mixed
Enter into conventional grouting material, form magnetic grouting material, then using the mobility of magnetic liquid be allowed in grouting material with
Machine is uniformly distributed, and is circulated into crack, and the superparamagnetism of magnetic liquid is recycled, and applies externally-applied magnetic field to it so that magnetic
Particle is in almost linear catenation along magnetic direction, i.e., magnetic grouting material is magnetized；So constantly pushing away with depth rod
Enter, magnetic probe is along during measured hole advances, if there is magnetic grouting material in the crack of the depth, magnetic probe will necessarily
The magnetic field for sensing the grouting material of the depth reflects and is exactly that magnetic induction constantly fluctuates in a normal range (NR), and one
The depth that denier magnetic probe enters has been more than the depth that magnetic grouting material is reached, then the magnetic induction of magnetic probe acquisition will necessarily go out
The steep drop of existing cliff of displacement formula, therefore, the depth corresponding to inflection point between magnetic induction normal fluctuation and steep drop, is exactly grouting material institute
The actual grade of arrival, that is, crack repairing depth.So above-mentioned technical proposal can accurately measure concrete structure
Crack is actually repaired depth, and the repair efficiency of fracture is carried out accurate and effectively assessed, split for follow-up further repairing
Seam provides reliable basis and data are supported, has ensured the safety and durability of concrete structure, reduces what catastrophic failure occurred
Probability.
Depth measurement device is preferably that depth measurement device includes two racks and difference for being separately positioned on depth rod both sides
Two gears of bearing via both sides are rotatably installed in, two racks of depth rod are nibbled with two gears of bearing via both sides respectively
It closes；The rotating speed coder for measuring gear turnning circle, rotating speed coder and master controller are equipped at the wheel shaft of each gear
Signal connects；In this way, during depth rod is passed advance, can be rotated through rack drives gear, and the rotational angle of gear
It is acquired by rotating speed coder, and feeds back to master controller, the conversion of rotational angle and depth of advance is carried out, in this way, realizing spy
The real time monitoring of head actual grade；Moreover, symmetrical two gears of setting have of both act on, one there is provided two
Corner and corresponding depth, such system can acquire the average value between two depth, and then obtain more accurately to measure and comment
Estimate effect；Moreover depth rod is engaged on centre position by two gears, plays the role of positioning and guiding to depth rod, it is convenient for depth
Bar is inserted into measured hole straight, further improves the accuracy for examining structure.
As further preferred, bearing include be bonded and fixed at concrete structural surface bottom plate and for install gear and
The mounting plate of rotating speed coder is fixed with sucker on mounting plate, and mounting plate is fixed through sucker and bottom plate；The advantages of designing in this way exists
In, mend slurry after the completion of, can conveniently by somewhat expensive encoder and installation gear be taken away with mounting plate, convenient for subsequently following
Ring recycles, and cheap bottom plate is left in concrete structural surface, that is to say, that has both solved device and concrete table
The installation fixation problem in face, and recycling easy to disassemble.
As an improvement, magnetic spy head-tail is equipped with for the preceding plug with depth rod grafting, it is strong that depth rod rear is equipped with magnetic strength
Signal emission module is spent, magnetic induction signal emission module front is equipped with for the rear plug with depth rod grafting, in depth rod
Portion is equipped with the data line for connecting preceding plug and rear plug；Magnetic probe, depth rod, magnetic induction signal emission module three warp
Preceding plug and rear plug are realized and are detachably connected, in this way, the depth rod of different length can be replaced as needed, to adapt to not
With the needs of the penetration of fracture and different concrete structure sizes.
One kind of the method for inspection is preferably：After magnetic grouting material initial set, externally-applied magnetic field is first removed, then inserted
It is first to mend slurry to enter depth rod, detection magnetic induction, acquisition inflection point and subsequent operation, the principle of the step, waits for that grouting material solidifies
Afterwards, externally-applied magnetic field is removed, the magnetism of grouting material is cured reservation, in this way, the magnetic field that magnetic probe senses in subsequent process, is exactly
The magnetic field of simple grouting material, the relational graph ocular and clear about magnetic induction and into depth fitted starch depth mending
As soon as its interior magnetic induction substantially fluctuates in the range of horizontal line with depth, inflection point is also very clear.
The another kind of the method for inspection is preferably：By the process in the crack of magnetic grouting material penetration concrete structure
In, it is synchronous to carry out insertion depth bar, detection magnetic induction, obtain inflection point and subsequent operation, the step it is critical that not removing
Externally-applied magnetic field, but in filling process, it is synchronous to carry out the insertion of magnetic probe, the acquisition of magnetic induction, magnetic induction and depth
Relational graph fitting and the acquisition of inflection point, although in this way, magnetic induction in fitted figure is simultaneously by externally-applied magnetic field and grouting material
Cure the influence in the magnetic field magnetic fields Liang Ge, the collected magnetic induction of magnetic probe is substantially two magnetic field superpositions, is mended in fitted figure
It starches in depth, magnetic induction is fluctuated approximately along the lower curved arc line that rises afterwards first drop, but has been more than once to mend to starch actual grade, magnetic
Sense intensity still can significantly drop suddenly, and what inflection point still can be clear and intuitive is found；It is synchronized when mending slurry deep to practical benefit slurry
Degree, which measures, to be advantageous in that, if the depth for needing to mend slurry can be learnt in advance, such as the crosscutting concern of leak, needs are repaiied
The depth of benefit is the thickness of wall, then passes through the monitoring in real time to practical grout penetration, it can be determined that going out practical repairing depth is
It is no to be equal to the depth for needing to repair, such as deficiency, then continue pressurization grouting, it is ensured that the last depth actually repaired, which is equal to, to be needed to repair
Depth.
One kind of magnetic grouting material is preferably magnetic-particle Fe3O4Powder, activating agent are oleic acid, by the Fe of 1 parts by weight3O4
The water of powder, the oleic acid of 1 parts by weight and 10 parts by weight is mixed and stirred for, and forms magnetic suspension liquid, then mixed 20 parts by weight
It in cement, stirs evenly, forms magnetic cement mortar grouting material.Said components and proportioning, manufacture is easy to use, mobility and super
Paramagnetism is good.
The another kind of magnetic grouting material is preferably magnetic-particle Fe3O4Powder, activating agent are oleic acid, by 1 parts by weight
Fe3O4The epoxy resin of powder, the oleic acid of 1 parts by weight and 20 parts by weight is mixed and stirred for uniformly, forming magnetic epoxy grouting
Material, grouting material prepared by aforesaid way is likewise supplied with good mobility and superparamagnetism, and it is only necessary to primary for preparation process
Stirring, it is more convenient.
Description of the drawings
Fig. 1 is the structural schematic diagram of the verifying attachment of distress in concrete repairing effect of the present invention.
Fig. 2 is the schematic cross-sectional view of bowing of the verifying attachment of distress in concrete repairing effect of the present invention.
Fig. 3 is the method for examining distress in concrete repairing effect of invention verifying attachment of the present invention in single magnetic field
The correspondence fitted figure of magnetic induction and insertion depth under effect.
Fig. 4 is making in double magnetic fields for the method for examining distress in concrete repairing effect of invention verifying attachment of the present invention
The correspondence fitted figure of magnetic induction and insertion depth under.
As shown in the figure 1, concrete structure, 2, bearing, 2.1, bottom plate, 2.2, mounting plate, 3, crack, 4, measured hole, 5, deep
Spend bar, 5.1, data line, 6, via, 7, magnetic probe, 7.1, preceding plug, 8, rack, 9, gear, 10, sucker, 11, rotating signal
Transmitting module, 12, magnetic induction signal emission module, 12.1, rear plug.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, the verifying attachment of distress in concrete repairing effect of the present invention, it includes being fixed on
The bearing 2 on 1 surface of concrete structure, drilled through inside concrete structure 1 and measured hole 4 near the crack 3, for stretching
Enter depth rod 5 and the master controller in measured hole 4.
The crack 3 refers to nearby that measured hole 4 and crack 3 are maintained within certain distance, be such as maintained at 2~3cm with
It is interior, in order to the magnetic field of magnetism grouting material at 7 induced cracking 3 of magnetic probe.
Bearing 2 is equipped with the via 6 being connected to measured hole 4, and depth rod 5 is inserted into through via 6 in measured hole 4, depth rod 5
Head is equipped with magnetic probe 7, which further includes the depth measurement device for the insertion depth for the bar 5 that fathoms, magnetic spy
First 7 and depth measurement device with master controller data connection.
Depth measurement device includes being separately positioned on two racks 8 of 5 both sides of depth rod and being rotatably installed in 2 mistake of bearing respectively
Two racks 8 of two gears 9 of 6 both sides of hole, depth rod 5 are engaged with two gears 9 of 2 via of bearing, 6 both sides respectively；Each tooth
The rotating speed coder for measuring 9 turnning circle of gear and angle is equipped at the wheel shaft of wheel 9, rotating speed coder is believed with master controller
Number connection.Specifically, rotating speed coder is equipped with rotating signal transmitting module 11, and master controller connects equipped with rotating signal
Receive module.Certainly, which can also be not provided with encoder but fixed magnet and winding outside wheel shaft on wheel shaft
Coil, when wheel shaft drives magnet rotors, coil flux amount necessarily changes, and coil can induce a pulse, records pulse
Number be gear 9 rotating cycle.Naturally, which is additionally provided with rotating signal transmitting module 11.
The concrete structure of bearing 2 includes the bottom made of pmma material for being bonded and fixed at 1 surface of concrete structure
Plate 2.1 and mounting plate 2.2 for installing gear 9 and rotating speed coder are fixed with sucker 10, mounting plate 2.2 on mounting plate 2.2
It is fixed through sucker 10 and bottom plate 2.1.
It is enclosed with protective case outside magnetic probe 7, and is internally provided with Hall element and amplifying circuit, 7 tail portion of magnetic probe is equipped with
For the preceding plug 7.1 with 5 grafting of depth rod, 5 rear of depth rod is equipped with magnetic induction signal emission module 12, magnetic induction letter
Number 12 front of transmitting module is equipped with for the rear plug 12.1 with 5 grafting of depth rod, and depth rod 5 is internally provided with for being inserted before connecting
First 7.1 and rear plug 12.1 data line 5.1.
Master controller is equipped with signal receiving module for receiving rotating signal and magnetic induction signal, and by rotating signal
It is converted to the insertion depth of magnetic probe 7.And display is connected on master controller, master controller using magnetic induction as y-axis magnetic
The insertion depth of probe 7 is that x-axis establishes coordinate system, is fitted to the correspondence figure of magnetic induction and insertion depth.
As shown in Figure 1, Figure 2, Figure 3 shows, the side for examining distress in concrete repairing effect based on verifying attachment of the present invention
A kind of embodiment of method, its step are as follows.
A, magnetic-particle, activating agent are mixed with conventional grout material such as cement mortar or epoxy resin, forms magnetic grouting
Material.
One kind of magnetic grouting material is preferably：Magnetic-particle is Fe3O4Powder, activating agent are oleic acid, by the Fe of 1 parts by weight3O4
The water of powder, the oleic acid of 1 parts by weight and 10 parts by weight is mixed and stirred for, and forms magnetic suspension liquid, then mixed 20 parts by weight
It in cement, stirs evenly, forms magnetic cement mortar grouting material.
The another kind of magnetic grouting material is preferably magnetic-particle Fe3O4Powder, activating agent are oleic acid, by 1 parts by weight
Fe3O4The epoxy resin of powder, the oleic acid of 1 parts by weight and 20 parts by weight is mixed and stirred for uniformly, forming magnetic epoxy grouting
Material.
B, 1 surface of concrete structure near crack 3 drills through measured hole 4, and installs inspection on 1 surface of concrete structure
Experiment device.
C, by the crack 3 of magnetic grouting material penetration concrete structure 1, and apply externally-applied magnetic field in filling process, make magnetic
Property grouting material is magnetized；Specifically, can two rows of magnet be fixed in the both sides of wall respectively, forms uniform and stable additional magnetic
So that it is located at intermediate magnetic grouting material magnetization.After magnetic grouting material initial set, externally-applied magnetic field is removed.
Certainly, by common sense it is found that above-mentioned step abc sequences can be adjusted flexibly, with subdrilling measured hole 4 and can pacify
Verifying attachment is filled, then matches magnetic grouting material again, finally mends crack 3, can also first match magnetic grouting material and mends crack 3, then
It bores measured hole 4 and verifying attachment is installed.
D, depth rod 5 is inserted into measured hole 4, and depth rod 5, along during measured hole 4 advances, depth measurement device is real
When the insertion depth of depth rod 5 is sent to master controller, and the magnetic strength that the magnetic probe 7 of 5 front end of depth rod will also measure in real time
Intensity is sent to master controller.More specifically, when depth rod 5 is advanced, rack 8 can be rotated with moving gear 9, and encoder can be adopted
Collection rotating signal is simultaneously sent to master controller, and rotation angle is converted into insertion depth by master controller, through introducing x-axis, and magnetic strength
Strength signal is introduced into y-axis after being received by master controller, to fit the correspondence figure of magnetic induction and insertion depth.
E, master controller monitors magnetic induction in real time, and as depth rod 5 is advanced, magnetic induction is also in certain amplitude
Interior concussion, when magnetic induction appearance significantly decays, between master controller will recognise that normal concussion and significantly decay
Inflection point, the insertion depth of the corresponding depth rod of the inflection point 5, the as practical repairing depth in crack 3.
Since the present embodiment is after mending crack 3, after magnetic grouting material initial set, externally-applied magnetic field is removed, so follow-up mistake
The magnetic field that magnetic probe 7 senses in journey is exactly the magnetic field after simple grouting material magnetization, fit about magnetic induction and into
The relational graph ocular and clear for entering depth is mending in slurry actual grade its magnetic induction as depth is substantially along horizontal line
Fluctuation in range, and be more than once to mend slurry actual grade, the decline of cliff of displacement formula then occurs for magnetic induction, therefore its inflection point is also with regard to a mesh
It is clear.
The present embodiment stresses, and after the completion of mending slurry, depth is starched for detecting actual benefit, to assess actual benefit slurry effect
Fruit.
After measuring practical repairing depth, measured hole 4 is filled up again.Due to the shape consolidation of measured hole 4, therefore hold very much
It easily can thoroughly fill up, not interfere with the normal function and service life of building.
As shown in Figure 1, Figure 2, Figure 4 shows, the side for examining distress in concrete repairing effect based on verifying attachment of the present invention
Another embodiment of method, the key step of the embodiment is identical as upper one embodiment, only difference is that：It does not remove outer
Add magnetic field, but in filling process, it synchronizes and carries out the insertion of magnetic probe 7, the acquisition of magnetic induction, magnetic induction and depth
Relational graph is fitted and the acquisition of inflection point.In this way, although the magnetic induction in fitted figure is simultaneously by externally-applied magnetic field and grouting material magnetic
The influence in the magnetizing field magnetic fields Liang Ge, the collected magnetic induction of magnetic probe are substantially two magnetic field superpositions.For externally-applied magnetic field
For, the both sides laying intensive magnetic induction of magnet segment magnetic induction line is big, and magnetic induction line relatively sparse magnetic induction in middle section is small,
And the magnetized magnetic field of grouting material is then the approximate horizontal magnetic field to fluctuation, so after two magnetic field superpositions, slurry is mended in fitted figure
In actual grade, magnetic induction is fluctuated approximately along the lower curved arc line that rises afterwards is first dropped.And but be more than once to mend slurry reality deeply
Degree, magnetic induction still can significantly drop suddenly, and what inflection point still can be clear and intuitive is found.
The present embodiment is laid particular emphasis on：It is synchronized when mending slurry and practical slurry depth of mending is measured.In this way, if can learn in advance
It needs to mend the depth starched, such as the crosscutting concern of leak, it is the thickness of wall to need the depth repaired, then by real time to reality
The monitoring of border grout penetration, it can be determined that go out whether practical repairing depth is equal to the depth for needing to repair, it is such as insufficient, then continue to add
Pressure grouting, it is ensured that the last depth actually repaired is equal to the depth for needing to repair.
Claims (9)
1. a kind of verifying attachment of distress in concrete repairing effect, it is characterised in that：It includes being fixed on concrete structure (1) table
The bearing (2) in face, drill through inside the concrete structure (1) and surveyed positioned at crack (3) neighbouring measured hole (4), for stretching into
Depth rod (5) in metering-orifice (4) and master controller, bearing (2) are equipped with the via (6) being connected to measured hole (4), depth rod
(5) it is inserted into measured hole (4) through via (6), the head of depth rod (5) is equipped with magnetic probe (7), which further includes being used for
Fathom bar (5) insertion depth depth measurement device, magnetic probe (7) and depth measurement device with master controller data
Connection.
2. the verifying attachment of distress in concrete repairing effect according to claim 1, it is characterised in that：Depth measurement device
Including being separately positioned on two racks (8) of depth rod (5) both sides and being rotatably installed in the two of bearing (2) via (6) both sides respectively
Two racks (8) of a gear (9), depth rod (5) are engaged with two gears (9) of bearing (2) via (6) both sides respectively；Each
The rotating speed coder for measuring gear (9) turnning circle is equipped at the wheel shaft of gear (9), rotating speed coder is believed with master controller
Number connection.
3. the verifying attachment of distress in concrete repairing effect according to claim 2, it is characterised in that：Bearing (2) includes
It is bonded and fixed at the bottom plate (2.1) on concrete structure (1) surface and the mounting plate for installing gear (9) and rotating speed coder
(2.2), sucker (10) is fixed on mounting plate (2.2), mounting plate (2.2) is fixed through sucker (10) and bottom plate (2.1).
4. the verifying attachment of distress in concrete repairing effect according to claim 1, it is characterised in that：Magnetic probe (7) tail
Portion is equipped with for the preceding plug (7.1) with depth rod (5) grafting, and depth rod (5) rear is equipped with magnetic induction signal emission module
(12), magnetic induction signal emission module (12) front is equipped with for the rear plug (12.1) with depth rod (5) grafting, depth rod
(5) it is internally provided with the data line (5.1) for connecting preceding plug (7.1) and rear plug (12.1).
5. a kind of method for examining distress in concrete repairing effect based on verifying attachment described in claim 1, special
Sign is：Its step includes：
Magnetic-particle, activating agent are mixed with conventional grout material, form magnetic grouting material；
Measured hole (4) is drilled through on concrete structure (1) surface of crack (3) nearby, and is installed on concrete structure (1) surface
Verifying attachment；
Apply externally-applied magnetic field by the crack (3) of magnetic grouting material penetration concrete structure (1), and in filling process, makes magnetism
Grouting material is magnetized；
By depth rod (5) be inserted into measured hole (4), and depth rod (5) along measured hole (4) advance during, depth measurement device
The insertion depth of depth rod (5) is sent to master controller in real time, and the magnetic probe (7) of depth rod (5) front end will also be surveyed in real time
The magnetic induction obtained is sent to master controller；
Master controller monitors magnetic induction in real time, and as depth rod (5) advance, magnetic induction also shakes in certain amplitude
It swings, when magnetic induction appearance significantly decays, master controller will recognise that normal concussion and the significantly inflection point between decaying,
The insertion depth of the corresponding depth rod of the inflection point (5), the as practical repairing depth of crack (3).
6. the method according to claim 5 for examining distress in concrete repairing effect, it is characterised in that：When magnetism fills
After slurry initial set, externally-applied magnetic field is first removed, then carries out insertion depth bar (5), detection magnetic induction, obtain inflection point and follow-up behaviour
Make.
7. the method according to claim 5 for examining distress in concrete repairing effect, it is characterised in that：Magnetism is filled
It is synchronous to carry out insertion depth bar (5), detection magnetic induction, obtain during the crack (3) of slurry penetration concrete structure (1)
Take inflection point and subsequent operation.
8. the method according to claim 5 for examining distress in concrete repairing effect, it is characterised in that：Magnetic-particle
For Fe3O4Powder, activating agent are oleic acid, by the Fe of 1 parts by weight3O4The water of powder, the oleic acid of 1 parts by weight and 10 parts by weight is mixed and is stirred
It mixes, forms magnetic suspension liquid, then mixed in the cement of 20 parts by weight, stir evenly, form magnetic cement mortar grouting material.
9. the method according to claim 5 for examining distress in concrete repairing effect, it is characterised in that：Magnetic-particle
For Fe3O4Powder, activating agent are oleic acid, by the Fe of 1 parts by weight3O4The epoxy resin of powder, the oleic acid of 1 parts by weight and 20 parts by weight is mixed
Merging stirs evenly, and forms magnetic epoxy grouting material.
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| CN201810111670.9A CN108445074B (en) | 2018-02-05 | 2018-02-05 | Device and method for testing concrete crack repairing effect |
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| CN201810111670.9A CN108445074B (en) | 2018-02-05 | 2018-02-05 | Device and method for testing concrete crack repairing effect |
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| CN110319762A (en) * | 2019-06-18 | 2019-10-11 | 浙江大学宁波理工学院 | The measuring device and rectangular coordinate system measurement method of the fracture pattern of concrete-bridge |
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| CN112160259A (en) * | 2020-11-17 | 2021-01-01 | 高双兵 | High-strength bridge deck crack repairing method |
| CN112813982A (en) * | 2021-01-05 | 2021-05-18 | 三峡大学 | Device and method for repairing underwater inverted crack by magnetic mortar |
| CN113027161A (en) * | 2021-03-05 | 2021-06-25 | 三峡大学 | Building crack repairing device and using method |
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| CN111749241A (en) * | 2020-06-05 | 2020-10-09 | 三峡大学 | Method for repairing underwater crack of coral sand blown-filled island revetment slope |
| CN111749241B (en) * | 2020-06-05 | 2021-08-24 | 三峡大学 | Method for repairing underwater crack of coral sand blown-filled island revetment slope |
| CN112160259A (en) * | 2020-11-17 | 2021-01-01 | 高双兵 | High-strength bridge deck crack repairing method |
| CN112813982A (en) * | 2021-01-05 | 2021-05-18 | 三峡大学 | Device and method for repairing underwater inverted crack by magnetic mortar |
| CN112813982B (en) * | 2021-01-05 | 2022-08-05 | 三峡大学 | Method for repairing underwater inverted crack by using magnetic mortar |
| CN113027161A (en) * | 2021-03-05 | 2021-06-25 | 三峡大学 | Building crack repairing device and using method |
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| CN113640371B (en) * | 2021-08-04 | 2023-12-01 | 山东知行智能装备有限公司 | Steel structure welding line detection process |
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