CN109959683A - A kind of detection method of sleeve Grouted density quality - Google Patents
A kind of detection method of sleeve Grouted density quality Download PDFInfo
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- CN109959683A CN109959683A CN201910312772.1A CN201910312772A CN109959683A CN 109959683 A CN109959683 A CN 109959683A CN 201910312772 A CN201910312772 A CN 201910312772A CN 109959683 A CN109959683 A CN 109959683A
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- slurry
- sleeve
- reinforcing bar
- resistance
- grouting
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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
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
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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
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/20—Investigating the presence of flaws
Abstract
The invention discloses a kind of detection methods of sleeve Grouted density quality, the filling paddle material injection that preferable conductive capability is all had before and after pre-designed hardening is placed in the sleeve of quasi- connected reinforcing bar, in slurry hardening overall process, utilize two end bar of sleeve, it is distributed in the pre-buried stylus of sleeve surrounding, and grouting port starches mouth with excessive, carry out and is connected between reinforcing bar, pre-buried stylus on each reinforcing bar and its surrounding sleeve, between grouting port or the slurry mouth that overflows, upper cartridge point pre-buried stylus and between, and the resistance measurement between upper cartridge point pre-buried stylus and grouting port or the slurry mouth that overflows, it is compared with the resistance value under the continuous no significant defect state of electrocondution slurry, the compaction rate of slurry is judged from electric conductor to the degree that insulator changes according to slurry, subregion can be achieved, various dimensions, detect and evaluate in the entire process the filling of slurry in sleeve Infuse compactness quality.The present invention is simple, easily implementation, use scope is wide.
Description
Technical field
The present invention relates to building engineering fields, and in particular to a kind of detection method of sleeve Grouted density quality.
Background technique
As building industry modernization promotes the needs with traditional architecture industry transition and upgrade, assembled architecture and its related skill
Art development have there is an urgent need to.The prefabricated concrete structure of one of principal mode of assembled architecture at present, because it is with work
The features such as industry degree is high, construction speed is fast, structural behaviour is superior, good economy performance, and be widely used, occupy larger
Market.
One of key core technologies of prefabricated concrete structure are the interconnection technique between prefabricated components.It is not only determined
The safety of connected node, while decide the safety of total.Currently, prefabricated concrete structure generallys use
Be grout sleeve rebar connecting technology, i.e., using have internal cavity structures high strength sleeve, by reserved steel bar in component
It is inserted by sleeve both ends, then by grouting port injection on sleeve by the materials group such as cement, fine aggregate, additive and mineral admixture
At microdilatancy high-strength grout, after grouting material hardens in sleeve, sleeve together with the reinforcing bar secure bond in sleeve,
To guarantee the reliability of node.Grout sleeve interconnection technique speed is fast, high-efficient, easy for construction, easy to operate.
Grout sleeve rebar connecting technology is the interconnection technique of reliable concrete prefabricated element generally acknowledged in the world,
But since by many-sided influence such as construction environment, slurry, worker's experience, bush structure, it typically is concealed work, grouting sets
How the quality of cylinder reinforcing bar connection, which accurately detects, is constantly subjected to pay high attention to.
Existing includes ultrasonic method, impact echo side for the common detection method of grout sleeve reinforcing bar quality of connection
Draw out method etc. after method, the imaging method of ray or CT scan, pre-buried steel wire.Above-mentioned all methods are although to a certain extent can be to set
The compactness quality being in the milk in cylinder makes evaluation, but is influenced by practical many factors, and there are testing result accuracy, objective
Various problems such as property, economy need further to solve.
In recent years, mix suitably electrically conductive component in conventional concrete and mortar, improve electric conductivity, development it is novel
Functional material has important support effect for realization of the invention.
Judge that slurry perfusion compactness quality is an effectively detection in sleeve by the resistance variations of measuring unit slurry
Thinking, i.e., if there is leakiness defect, then measured resistance value can be very big, even infinitely great.Mainly have at present several
Technical thought:
(1) using having electric conductor finite conductivity ability and resistance value is up to several megaohms of spies after 7 days before common slurry initial set
Point judges whether slurry is closely knit in sleeve.If institute's measuring resistance is up to tens megaohms even several hundred megaohms or infinitely great, then it is assumed that set
Slurry is not closely knit in cylinder.
(2) using plain conductor measurement grouting pore and pulp pore between hardening after non-conductive paste resistance value with
Predetermined resistance compares, and then thinks that it has that slurry plumpness exists if it is greater than predetermined resistance.Its predetermined resistance
In 100-3000M Ω.
(3) a column measuring point is set on inner wall in sleeve, a measuring point is set on reinforcing bar, individually by thick liquid discharge mouth
These measuring points are drawn with the metal lead wire of steel, access measuring instrument measures resistance value；Compare slurry resistance and sky in final set
Gas reference resistance judges Grouted density in sleeve with this.
Above-mentioned several thinkings have reasonable place, but there are some problems.It, can not as being full of barrel bore before slurry initial set
Guarantee that slurry is centainly closely knit in hard process, sag and swell is also possible to cause slurry before initial set without larger defect, and in sleeve
Hollow partial sleeves region.The electricity that slurry measures slurry in sleeve at minority 1-2 is contacted by by two probes or metal wire
Resistance value, or some region setting measuring point is concentrated on to measure the resistance value of sleeve entoplasm material, to judge slurry in entire sleeve
Compactness quality condition, cannot reflect the slurry compactness situation of different zones in sleeve, not accurate enough, spatial resolution
It is low；Research shows that the ordinary cartridge grouting material of no special design is generally electric conductor in flow regime, to one section of hardening when final set
After time, resistance, which still shows, to be incrementally increased, but slowdown in growth and the situation fluctuated once in a while, and slurry is gradually by flow regime
Electric conductor gradually turns to semiconductor, even close to insulator.After hardening, as measuring point distance is different, paste composition is different, ring
Temperature change in border temperature and slurry hardening process, institute's measuring resistance value are more big changes.Even if same type slurry, electricity
Change in resistance is wider, and single setting one " predetermined value " can not be accurately as with reference to threshold values.Meanwhile simply by paste materials
Resistance value is compared with reference air resistance value when final set or certain resistance values for fixing are that be difficult to slurry in accurate evaluation sleeve closely knit
Degree degree situation；No matter narrow space in sleeve is arranged the metal wire of internal measuring point or setting extraction, to a certain extent can
So that grouting difficulty increases, further decline Grouted density reliability.
It is therefore proposed that new grout sleeve reinforcing bar quality of connection detection method is very necessary.
Summary of the invention
Goal of the invention: in order to solve the deficiencies in the prior art, the present invention provides a kind of sleeve Grouted density quality
Detection method, the compactness matter being in the milk in grout sleeve formula reinforcing bar connection type between prefabricated components assembled architecture
Measure non-destructive testing and evaluation.It realizes in slurry hardening overall process, monitored within the scope of sleeve universe and evaluates slurry perfusion and is closely knit
Spend quality.
Technical solution: to achieve the above object, technical solution of the present invention is as follows:
A kind of detection method of sleeve Grouted density quality, includes the following steps:
Step 1: grouting: the slurry for all having preferable conductive capability before and after pre-designed hardening is injected by grouting port
It is placed in the sleeve with insulated enclosure circle of quasi- connected reinforcing bar and reinforcing bar；Simultaneously according to practical sleeve model, with same
Slurry and connection reinforcing bar, using best grouting way, make exposed not embedding zero defect grouting material standard specimen as pair
Compare part；
Step 2: measuring resistance: the distribution of sleeve wall surrounding is reserved with the conductive pre-buried stylus through sleeve wall, for matching
The resistance measurement that resistance measuring instrument carries out slurry in sleeve is closed, quantity and position can be needed according to actual measurement in production sleeve
When it is reserved, realize that detection is reinforced in uniformly detection or keypoint part；
In slurry hardening overall process, using two end bar of sleeve and reinforcing bar, the pre-buried stylus for being distributed in sleeve surrounding, with
And grouting port starches mouth with excessive, measures following resistance using resistance measuring instrument:
A. the resistance being connected between reinforcing bar and reinforcing bar；
B. reinforcing bar, the reinforcing bar resistance between pre-buried stylus on its surrounding sleeve respectively；
C. reinforcing bar and reinforcing bar respectively the resistance between grouting port or the slurry mouth that overflows,
D. upper cartridge point pre-buried stylus and between resistance；
E. the resistance measurement between upper cartridge point pre-buried stylus and grouting port and the slurry mouth that overflows；
Step 3: comparative analysis: according to above-mentioned measured resistance, with electrocondution slurry in intact, no significant defect state
The resistance value of lower standard specimen is compared, and realizes subregion, various dimensions detection and the perfusion compactness for evaluating slurry in sleeve
Quality.
As optimization: in the step one, the grout material for connecting reinforcing bar and reinforcing bar be by particular design,
It joined in the conductive paste materials such as carbon fiber, graphite, carbon black, ferriferous oxide and the slurry being dispersed in, after slurry hardening
Still there is preferable uniformity and electric conductivity；The incorporation of conductive paste material can be by resistivity control under slurry serviceable condition 1
Within~10000 Ω cm (generally caning be controlled in 1~500 Ω cm) electric conductor；Once there is the defects of compactness and asks in slurry
Topic, resistance will become larger with the intensification of defect level；When occurring compared with the compactness defect such as large fracture or hole area, slurry between measuring point
Resistance value may be up to 100~1000M Ω or even 1000M Ω or more；Show slurry from electric conductor to exhausted using measured resistance value
The degree of edge body direction transformation judges slurry compaction rate in sleeve.
As optimization: in the step two, grouting port, the slurry mouth that overflows except its injection of performance and overflow in the sleeve wall
Visually it is all pre-buried stylus outside the function of slurry, plays its measuring point function as resistance measurement, made by conductive material.
As optimization: in the step two, the sleeve wall and slurry, pre-buried stylus, grouting port or overflow slurry mouth it
Between be state of insulation；Reinforcing bar and reinforcing bar are state of insulation between rest part and sleeve in addition to going deep into sleeve.
As optimization: pre-buried stylus is to need flexible distributed in all around stems according to design in the sleeve wall, is passed through
Sleeve wall, to measure each region slurry resistance value.
As optimization: in the step three, the resistance being connected between reinforcing bar and reinforcing bar is measured using resistance measuring instrument
Value is compared with the resistance value of normal intact slurry and the standard specimen of reinforcement fabrication, specific practice are as follows: after slurry hardening, has been
It is in the milk between judgement measuring point at 1~3 times of good state substantially intact, there are slight leakiness defects for grouting between 3~10 times of judgement measuring points
Possible, grouting is possible in the presence of secondary moderate leakiness defect between 10~20 times of judgement measuring points, between 20~50 times of judgement measuring points
Grouting is there are medium heavier degree leakiness defect, serious leakiness defect of being in the milk between 50~100 times of judgement measuring points, 100 times with
There are larger hole areas for grouting between upper judgement measuring point.Then there are compactness defects between reinforcing bar and reinforcing bar.
As optimization: in the step three, being measured respectively using resistance measuring instrument and be connected reinforcing bar and reinforcing bar and its week
Enclose the resistance of pre-buried stylus on sleeve, grouting port or the slurry mouth that overflows；If the resistance value of some or part measurement point is significantly greater than just
The resistance value of the standard specimen of normal intact slurry and reinforcement fabrication, then pre-buried stylus, note on reinforcing bar and reinforcing bar and its surrounding sleeve
Starch mouth or the slurry mouth that overflows between slurry at some position or portion there are compactness defects；Specifically: it is hardened to slurry
Afterwards, determine when being 1~3 times of serviceable condition to be in the milk between measuring point substantially intact, grouting exists slightly not close between 3~10 times of judgements measuring points
Powerful position is sunken possible, and grouting is possible in the presence of secondary moderate leakiness defect between 10~20 times of judgement measuring points, and 20~50 times determine
Grouting is there are medium heavier degree leakiness defect between measuring point, serious leakiness defect of being in the milk between 50~100 times of judgement measuring points,
There are larger hole areas for grouting between 100 times or more judgement measuring points.
As optimization: in the step three, according to actual needs using each on resistance measuring instrument selective measurement sleeve
Resistance between pre-buried stylus measures each pre-buried stylus and grouting port or the resistance starched between mouth that overflows；If some or part are surveyed
The resistance value of amount point is significantly greater than the resistance value of the standard specimen of normal intact slurry and reinforcement fabrication, then deposits at measurement point position
In compactness defect；Specifically: be in the milk between judgement measuring point substantially intact, 3~10 times of judgement measuring points when being 1~3 times of serviceable condition
Between grouting there are slight leakiness defect may, 10~20 times determine that grouting between measuring points has time moderate leakiness defect
May, it is in the milk between 20~50 times of judgements measuring points there are medium heavier degree leakiness defect, is in the milk between 50~100 times of judgement measuring points
Serious leakiness defect, being in the milk between 100 times or more judgements measuring points, there are larger hole areas.
As optimization: when the step two is using resistance measuring instrument selection measuring point measurement resistance, slurry is either flowing
Dynamic state or post-hardening conditions are electric conductor；When carrying out step 3, if the slurry electricity of real-time or continuous Timing measurement
Grouting there is a possibility that leakiness defect is larger between determining measuring point when resistance value is 3 times of serviceable condition or more, realize in slurry
Harden the real time monitoring in overall process on the compactness mass defect time of slurry and on position.
As optimization: according to practical sleeve model, with same slurry and connection reinforcing bar, using best grouting way, system
Make not embedding zero defect grouting material standard specimen part as a comparison.
The utility model has the advantages that invention introduces electrocondution slurry, space multiple spots to arrange resistance measuring point, using conductive slurry once going out
When existing leakiness quality problems, resistance variations outstanding feature proposes to give slurry hardening whole process supervision detection simultaneously
Corresponding measuring device prototype.The invention is easy to operate except having, and economy is outer by force to be also equipped with following advantages:
(1) resistance variations of slurry caused by different degrees of closely knit quality problems are different, are not only showed only as out
" logical " or " disconnected " of pass amount formula.The resistivity of intact conductive grouting material can be controlled in 1~10000 Ω cm, belongs to conduction
Body scope.Its resistance value is converted between insulator from electric conductor has very big variation range, this is different in slurry to judge
The compactness quality problems of degree provide sufficiently wide measurable resistance range, greatly improve resistance measurement to slurry
Expect the resolution capability of the defects of closely knit different degrees of.
(2) it is distributed in the pre-buried stylus of sleeve wall surrounding, grouting port, overflows between slurry mouth and connected reinforcing bar and sleeve
Insulation and arrangement can carry out testing and evaluation, diagnosis to the slurry perfusion compactness quality in sleeve universe to various dimensions
Position existing for defect avoids only generally judging Grouted density quality with the resistance value of individual minorities.
(3) it can be not only used for full irrigation slurry, it can also double of grouting material perfusion compactness quality testing and judgement.
(4) whole the detecting that slurry hardening front and back can be realized to exposed or embedding casing joint, to necessary important section
Slurry can long term monitoring in point sleeve.
(5) method using the slurry of in-site pouring and quasi- connection reinforcement fabrication standard specimen as a comparison, drops as far as possible
The low slurry resistance value as brought by the factors such as paste composition, type, environment temperature, construction temperature, hardening different phase
Amplitude of variation it is big, it is difficult to control, influence the accuracy of compactness defect dipoles.
Detailed description of the invention
Fig. 1 is a kind of detection method schematic diagram of sleeve Grouted density quality.
Fig. 2 is sleeve schematic diagram.
Fig. 3 is sleeve diagrammatic cross-section.
Fig. 4 is relational graph between non-insulating material band insulating layer sleeve and pre-buried stylus, slurry.
Fig. 5 is non-insulating material with insulating layer sleeve and grouting port or the relational graph overflow between slurry mouth and slurry.
Fig. 6 relational graph between insulating materials sleeve and pre-buried stylus, slurry.
Fig. 7 is insulating materials sleeve and grouting port or the relational graph starched between mouth and slurry of overflowing.
Fig. 8 is to measure slurry resistance schematic diagram in sleeve using connected reinforcing bar.
Fig. 9 is to measure sleeve entoplasm material resistance schematic diagram using connected reinforcing bar and pre-buried stylus.
Figure 10 is to utilize pre-buried stylus slurry resistance schematic diagram along the axially measured sleeve of reinforcing bar.
Figure 11 is to utilize pre-buried stylus slurry resistance schematic diagram along sleeve circumferential direction measuring unit cylinder.
Figure 12 is to utilize slurry resistance schematic diagram in pre-buried stylus and the slurry axially measured sleeve of opening's edge reinforcing bar that overflows.
Figure 13 is to utilize slurry resistance schematic diagram in pre-buried stylus and the slurry opening's edge sleeve circumferential direction measuring unit cylinder that overflows.
Figure 14 is to utilize pre-buried stylus and grouting port the slurry resistance schematic diagram along the axially measured sleeve of reinforcing bar.
Figure 15 is to utilize pre-buried stylus and grouting port the slurry resistance schematic diagram along sleeve circumferential direction measuring unit cylinder.
Figure 16 is to measure sleeve entoplasm material resistance schematic diagram using reinforcing bar and the slurry mouth that overflows.
Figure 17 is to measure sleeve entoplasm material resistance schematic diagram using reinforcing bar and grouting port.
When Figure 18 is that sleeve wraps up sleeve by concrete, measurement lead-out wire and measuring holes schematic diagram are reserved.
Figure 19 is standard specimen schematic diagram.
1-intend a connected reinforcing bar, 2-sleeve one end insulated enclosure circles, 3a-non-insulating material band insulating layer sleeve,
3b-insulating materials sleeve, 4-overflow slurry mouths, 5-grouting ports, 6-pre-buried styluses, 7-electrocondution slurries, 8-intend it is connected another
One reinforcing bar, 9-sleeve other end insulated enclosure circles, 10-resistance measuring instruments, 11-sleeves (3) inner wall insulation layer, 12-coagulations
Soil, 13-measurement lead-out wires (insulation is kept between each pre-buried stylus lead-out wire), 14-measuring holes, 15-standard specimens.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, so that the technology of this field
Personnel can better understand advantages and features of the invention, to make apparent boundary to protection scope of the present invention
It is fixed.Embodiment described in the invention is only a part of the embodiment of the present invention, instead of all the embodiments, based on the present invention
In embodiment, those of ordinary skill in the art's every other implementation obtained without making creative work
Example, shall fall within the protection scope of the present invention.
Embodiment 1
Sleeve 3 is made by non-insulating materials such as metals, i.e. sleeve 3a；Sleeve 3a and the attached excessive slurry mouth 4 of its tube wall, slip casting
Following scheme can be used when mouth 5, pre-buried stylus 6 and quasi- connected reinforcing bar 1 and completely exposed reinforcing bar 8 to implement.As Fig. 1-5 institute
Show:
A kind of detection method of sleeve Grouted density quality, the attached excessive slurry mouth 4 of tube wall, grouting port 5, pre-buried stylus 6
And the sealing ring 2,9 that insulating layer 11 is respectively adopted between quasi- connected reinforcing bar 1 and reinforcing bar 8 and insulate is kept apart.
Grouting material 7 in the embodiment is specifically, cement 70, silicon ash 8, AEA swelling agent 9, powdered whiting 14, the ratio of mud
0.35, sand-binder ratio 1.3, water-reducing agent 0.5%, defoaming agent 0.14, ammonium sulfate 0.28 ‰, graphite 14.At 20 DEG C, resistivity is
130~180 Ω cm.
Electrocondution slurry 7 is injected by grouting port 5 to be inserted into and is placed with the close with insulating of quasi- connected reinforcing bar 1 and reinforcing bar 8
In the sleeve 3a of seal 2,9.
After the hardening of slurry 7, the resistance being connected between reinforcing bar 1 and 8 is measured using resistance measuring instrument 10；It is surveyed using resistance
Amount instrument 10 is measured to be connected pre-buried stylus 6 on reinforcing bar 1 and reinforcing bar 8 and its surrounding sleeve 3, grouting port 5 or overflow respectively and be starched between mouth 4
Resistance；Using resistance, each pre-buried stylus 6 of measurement between each pre-buried stylus 6 on 10 selective measurement sleeve 3 of resistance measuring instrument
With the resistance between grouting port 5 or the slurry mouth 4 that overflows, if the resistance value of some or part measuring point is significantly greater than normal intact slurry 7
Due resistance value, then it is assumed that the defects of there are compactness at these positions, as shown in Fig. 8-17.Specifically: it is serviceable condition 1
It being in the milk between judgement measuring point at~3 times substantially intact, being in the milk between 3~10 times of judgement measuring points, it is possible that there are slight leakiness defects, and 10
Grouting is possible in the presence of secondary moderate leakiness defect between~20 times of judgement measuring points, and grouting exists between 20~50 times of judgement measuring points
Medium heavier degree leakiness defect, serious leakiness defect of being in the milk between 50~100 times of judgement measuring points, 100 times or more judgements are surveyed
There are larger hole areas for grouting between point.
Embodiment 2
Sleeve 3 is made by insulating materials, i.e. sleeve 3b；It is excessive slurry mouth 4 sleeve 3b attached with its tube wall, grouting port 5, pre-buried
Following scheme can be used when stylus 6 and quasi- connected reinforcing bar 1 and completely exposed reinforcing bar 8 to implement.As shown in Fig. 1-3, Fig. 6,7:
Grouting material 7 in the embodiment is specifically, cement 70, silicon ash 8, AEA swelling agent 9, powdered whiting 14, the ratio of mud
0.35, sand-binder ratio 1.3, water-reducing agent 0.5%, defoaming agent 0.14, ammonium sulfate 0.28 ‰, graphite 14.At 20 DEG C, resistivity is
130~180 Ω cm.
Electrocondution slurry 7 is injected by grouting port 5 to be inserted into and is placed with the close with insulating of quasi- connected reinforcing bar 1 and reinforcing bar 8
In the sleeve 3b of seal 2,9.
After the hardening of slurry 7, the resistance being connected between reinforcing bar 1 and 8 is measured using resistance measuring instrument 10；It is surveyed using resistance
Amount instrument 10 is measured to be connected pre-buried stylus 6 on reinforcing bar 1 and reinforcing bar 8 and its surrounding sleeve 3, grouting port 5 or overflow respectively and be starched between mouth 4
Resistance；Using resistance, each pre-buried stylus 6 of measurement between each pre-buried stylus 6 on 10 selective measurement sleeve 3 of resistance measuring instrument
With the resistance between grouting port 5 or the slurry mouth 4 that overflows, if the resistance value of some or part measuring point is significantly greater than normal intact slurry 7
Due resistance value, then it is assumed that the defects of there are compactness at these positions, as shown in Fig. 8-17.Specifically: it is serviceable condition 1
It being in the milk between judgement measuring point at~3 times substantially intact, being in the milk between 3~10 times of judgement measuring points, it is possible that there are slight leakiness defects, and 10
Grouting is possible in the presence of secondary moderate leakiness defect between~20 times of judgement measuring points, and grouting exists between 20~50 times of judgement measuring points
Medium heavier degree leakiness defect, serious leakiness defect of being in the milk between 50~100 times of judgement measuring points, 100 times or more judgements are surveyed
There are larger hole areas for grouting between point.
Embodiment 3
Sleeve 3 is made by non-insulating materials such as metals, i.e. sleeve 3a；Sleeve 3a and the attached excessive slurry mouth 4 of its tube wall, slip casting
Following scheme, which can be used, when being wrapped up by concrete in mouth 5, pre-buried stylus 6 and quasi- connected reinforcing bar 1 and reinforcing bar 8 implements.Such as Fig. 1-5
It is shown:
A kind of detection method of sleeve Grouted density quality, the attached excessive slurry mouth 4 of tube wall, grouting port 5, pre-buried stylus 6
And the sealing ring 2,9 that insulating layer 11 is respectively adopted between quasi- connected reinforcing bar 1 and reinforcing bar 8 and insulate is kept apart.
Grouting material 7 in the embodiment is specifically, cement 70, silicon ash 8, AEA swelling agent 9, powdered whiting 14, the ratio of mud
0.35, sand-binder ratio 1.3, water-reducing agent 0.5%, defoaming agent 0.14, ammonium sulfate 0.28 ‰, graphite 14.At 20 DEG C, resistivity is
130~180 Ω cm.
Electrocondution slurry 7 is injected by grouting port 5 to be inserted into and is placed with the close with insulating of quasi- connected reinforcing bar 1 and reinforcing bar 8
In the sleeve 3a of seal 2,9.
By the pre-buried stylus 6 on sleeve 3a by being directed to package sleeve 3a concrete in connection measurement 13 Unified Set of lead
Surface；It is stayed in the connected reinforcing bar 1 of package, 8 concrete part very little regions and sets measuring holes 14；
Grouting material 7 in the embodiment is specifically, cement 70, silicon ash 8, AEA swelling agent 9, powdered whiting 14, the ratio of mud
0.35, sand-binder ratio 1.3, water-reducing agent 0.5%, defoaming agent 0.14, ammonium sulfate 0.28 ‰, graphite 14.At 20 DEG C, resistivity is
130~180 Ω cm.
After the hardening of slurry 7, reinforcing bar is connected by measuring holes 14 using resistance measuring instrument 10, by measuring lead 13,
Measure the resistance being connected between reinforcing bar 1 and reinforcing bar 8；It is measured respectively using resistance measuring instrument 10 and is connected reinforcing bar 1 and 8 and its week
Enclose the resistance between pre-buried stylus 6 on sleeve 3a, grouting port 5 or the slurry mouth 4 that overflows；Using 10 selective measurement sleeve of resistance measuring instrument
Resistance between resistance, each pre-buried stylus 6 of measurement between the upper each pre-buried stylus 6 of 3a and grouting port 5 or the slurry mouth 4 that overflows, if certain
A or part measuring point resistance value is significantly greater than the due resistance value of normal intact slurry 7, then it is assumed that there are close at these positions
The defects of solidity, as shown in Fig. 8-17.Specifically: it is in the milk between judgement measuring point when being 1~3 times of serviceable condition substantially intact, 3~10
Being in the milk between judgement measuring point again, it is possible that there are slight leakiness defects, and grouting is in the presence of secondary moderate between 10~20 times of judgement measuring points
Leakiness defect is possible, and there are medium heavier degree leakiness defect, 50~100 times of judgements for grouting between 20~50 times of judgement measuring points
It is in the milk between measuring point serious leakiness defect, there are larger hole areas for grouting between 100 times or more judgement measuring points.
Embodiment 4
Sleeve 3 is made by insulating materials, i.e. sleeve 3b；It is excessive slurry mouth 4 sleeve 3b attached with its tube wall, grouting port 5, pre-buried
Following scheme, which can be used, when being wrapped up by concrete in stylus 6 and quasi- connected reinforcing bar 1 and reinforcing bar 8 implements.Such as Fig. 1-3,6,7 institutes
Show:
Grouting material 7 in the embodiment is specifically, cement 70, silicon ash 8, AEA swelling agent 9, powdered whiting 14, the ratio of mud
0.35, sand-binder ratio 1.3, water-reducing agent 0.5%, defoaming agent 0.14, ammonium sulfate 0.28 ‰, graphite 14.At 20 DEG C, resistivity is
130~180 Ω cm.
Electrocondution slurry 7 is injected by grouting port 5 to be inserted into and is placed with the close with insulating of quasi- connected reinforcing bar 1 and reinforcing bar 8
In the sleeve 3b of seal 2,9.
By the pre-buried stylus 6 outside sleeve 3b by being directed to package sleeve 3b concrete in connection measurement 13 Unified Set of lead
Surface；Measuring holes 14 are set wrapping up being connected to stay in 8 concrete part very little region of reinforcing bar 1 and reinforcing bar；
After the hardening of slurry 7, reinforcing bar is connected by measuring holes 14 using resistance measuring instrument 10, by measuring lead 13,
Measure the resistance being connected between reinforcing bar 1 and reinforcing bar 8；Measured respectively using resistance measuring instrument 10 be connected reinforcing bar 1 and reinforcing bar 8 with
Resistance on its surrounding sleeve 3b between pre-buried stylus 6, grouting port 5 or the slurry mouth 4 that overflows；Using 10 selective measurement of resistance measuring instrument
Resistance between resistance, each pre-buried stylus 6 of measurement on sleeve 3b between each pre-buried stylus 6 and grouting port 5 or the slurry mouth 4 that overflows, such as
The resistance value of fruit some or part measuring point is significantly greater than the due resistance value of normal intact slurry 7, then it is assumed that deposits at these positions
The compactness the defects of, as shown in Fig. 8-17.Specifically: it is in the milk between judgement measuring point when being 1~3 times of serviceable condition substantially intact, 3
Being in the milk between~10 times of judgement measuring points, it is possible that there are slight leakiness defects, and grouting has time medium journey between 10~20 times of judgement measuring points
The leakiness defect of degree may, be in the milk between 20~50 times of judgements measuring points there are medium heavier degree leakiness defect, 50~100 times
Determine to be in the milk serious leakiness defect between measuring point, being in the milk between 100 times or more judgements measuring points, there are larger hole areas.
The various embodiments described above are merely to illustrate the present invention and can be implemented, and do not represent and are only capable of implementing according to above-described embodiment.This
Each composition part dimension, position, geometry and angle, material therefor for inventing etc. all can be according to actual requirement and specific feelings
Condition is varied and adjusts.
Claims (10)
1. a kind of detection method of sleeve Grouted density quality, characterized by the following steps:
Step 1: grouting: the slurry (7) for all having preferable conductive capability before and after pre-designed hardening is infused by grouting port (5)
Enter and is placed in the sleeve (3) with insulated enclosure circle (2,9) of quasi- connected reinforcing bar (1) and reinforcing bar (8)；Simultaneously according to reality
Sleeve model makes exposed not embedding nothing using best grouting way with same slurry (7) and connection reinforcing bar (1), (8)
Defect grouting material standard specimen (15) part as a comparison；
Step 2: measuring resistance: the distribution of sleeve (3) wall surrounding is reserved with the conductive pre-buried stylus (6) through sleeve (3) wall,
For cooperating resistance measuring instrument (10) to carry out the resistance measurement of sleeve (3) interior slurry (7), quantity and position can be according to practical surveys
Amount needs to reserve when making sleeve, realizes that detection is reinforced in uniformly detection or keypoint part；
In slurry (7) hardening overall process, using two end bar of sleeve (1) and reinforcing bar (8), it is distributed in the pre- of sleeve (3) surrounding
It buries stylus (6) and grouting port (5) and slurry mouth (4) that overflows, measures following resistance using resistance measuring instrument (10):
A. the resistance being connected between reinforcing bar (1) and reinforcing bar (8)；
B. reinforcing bar (1), reinforcing bar (8) resistance between pre-buried stylus (6) on its surrounding sleeve (3) respectively；
C. reinforcing bar (1) and reinforcing bar (8) respectively the resistance between grouting port (5) or slurry mouth (4) that overflows,
D. on sleeve (3) the pre-buried stylus in part (6) and between resistance；
E. the resistance measurement on sleeve (3) between the pre-buried stylus in part (6) and grouting port (5) and slurry mouth (4) that overflows；
Step 3: comparative analysis: according to above-mentioned measured resistance, with electrocondution slurry (7) under intact, no significant defect state
The resistance value of standard specimen (15) is compared, and the perfusion of slurry is closely knit in realization subregion, various dimensions detection and evaluation sleeve
Spend quality.
2. the detection method of sleeve Grouted density quality according to claim 1, it is characterised in that: the step one
In, slurry (7) material for connecting reinforcing bar (1) and reinforcing bar (8) is that joined carbon fiber, graphite, charcoal by particular design
In the conductive paste materials such as black, ferriferous oxide and the slurry being dispersed in, still have after slurry (7) hardening preferable uniform
Property and electric conductivity；The incorporation of conductive paste material can be by resistivity control under slurry (7) serviceable condition in 1~10000 Ω cm (one
As can be controlled in 1~500 Ω cm) within electric conductor；Once there is the defects of compactness problem in slurry (7), and resistance will be with scarce
Fall into degree intensification and become larger；When occurring compared with the compactness defect such as large fracture or hole area, slurry (7) resistance value can be high between measuring point
Up to 100~1000M Ω or even 1000M Ω or more；Show slurry (7) from electric conductor to insulator side using measured resistance value
Slurry in sleeve (7) compaction rate is judged to the degree of transformation.
3. the detection method of sleeve Grouted density quality according to claim 1, it is characterised in that: the step two
In, grouting port (5), excessive slurry mouth (4) are in addition to playing its injection and overflowing the function of slurry (7) on the sleeve (3) wall, visually
It is all pre-buried stylus (6), plays its measuring point function as resistance measurement, made by conductive material.
4. the detection method of sleeve Grouted density quality according to claim 1 or 3, it is characterised in that: the step
It is insulation between the sleeve (3) wall and slurry (7), pre-buried stylus (6), grouting port (5) or slurry mouth (4) that overflows in rapid two
State；Reinforcing bar (1) and reinforcing bar (8) are state of insulation between rest part and sleeve (3) in addition to going deep into sleeve (3).
5. the detection method of sleeve Grouted density quality according to claim 1, it is characterised in that: the sleeve
(3) pre-buried stylus (6) is to be needed flexible distributed around sleeve (3) according to design on wall, sleeve (3) wall is passed through, to measure
Each region slurry (7) resistance value.
6. the detection method of sleeve Grouted density quality according to claim 1, it is characterised in that: the step three
In, the resistance value being connected between reinforcing bar (1) and reinforcing bar (8) and normal intact slurry (7) are measured using resistance measuring instrument (10)
Compare with the resistance value of the standard specimen (15) of reinforcing bar (8) production, specific practice are as follows: be serviceable condition after slurry (7) hardening
It being in the milk between judgement measuring point at 1~3 times substantially intact, being in the milk between 3~10 times of judgement measuring points, it is possible that there are slight leakiness defects, and 10
Grouting is possible in the presence of secondary moderate leakiness defect between~20 times of judgement measuring points, and grouting exists between 20~50 times of judgement measuring points
Medium heavier degree leakiness defect, serious leakiness defect of being in the milk between 50~100 times of judgement measuring points, 100 times or more judgements are surveyed
There are larger hole areas for grouting between point.Then there are compactness defects between reinforcing bar (1) and reinforcing bar (8).
7. the detection method of sleeve Grouted density quality according to claim 1, it is characterised in that: the step three
In, it is measured respectively using resistance measuring instrument (10) and is connected pre-buried stylus on reinforcing bar (1) and reinforcing bar (8) and its surrounding sleeve (3)
(6), the resistance of grouting port (5) or slurry mouth (4) that overflows；If the resistance value of some or part measurement point is significantly greater than normal intact slurry
The resistance value for expecting the standard specimen (15) of (7) and reinforcing bar (8) production, then on reinforcing bar (1) and reinforcing bar (8) and its surrounding sleeve (3)
There are compactness for slurry (7) between pre-buried stylus (6), grouting port (5) or slurry mouth (4) that overflows at some position or portion
Defect；Specifically: after slurry (7) hardening after, when being 1~3 times of serviceable condition determine measuring point between be in the milk it is substantially intact, 3~10 times
Determine between measuring point grouting there are slight leakiness defect may, between 10~20 times of judgements measuring points grouting exist it is secondary it is moderate not
Closely knit defect is possible, and there are medium heavier degree leakiness defects, 50~100 times of judgements to survey for grouting between 20~50 times of judgement measuring points
It is in the milk between point serious leakiness defect, there are larger hole areas for grouting between 100 times or more judgement measuring points.
8. the detection method of sleeve Grouted density quality according to claim 1, it is characterised in that: the step three
In, the resistance on resistance measuring instrument (10) selective measurement sleeve (3) between each pre-buried stylus (6) is used according to actual needs,
Measure each pre-buried stylus (6) and grouting port (5) or the resistance starched between mouth (4) that overflows；If the resistance of some or part measurement point
Value is significantly greater than the resistance value of the standard specimen (15) of normal intact slurry (7) and reinforcing bar (8) production, then deposits at measurement point position
In compactness defect；Specifically: be in the milk between judgement measuring point substantially intact, 3~10 times of judgement measuring points when being 1~3 times of serviceable condition
Between grouting there are slight leakiness defect may, 10~20 times determine that grouting between measuring points has time moderate leakiness defect
May, it is in the milk between 20~50 times of judgements measuring points there are medium heavier degree leakiness defect, is in the milk between 50~100 times of judgement measuring points
Serious leakiness defect, being in the milk between 100 times or more judgements measuring points, there are larger hole areas.
9. the detection method of -9 described in any item sleeve Grouted density quality according to claim 1, it is characterised in that: described
The step of two using resistance measuring instrument (10) selection measuring points measurement resistance when, slurry shape either after flow regime is still hardened
State is electric conductor；When carrying out step 3, if slurry (7) resistance value of real-time or continuous Timing measurement is serviceable condition 3
Times or more when determine measuring point between grouting there is a possibility that leakiness defect is larger, realize to slurry hardening overall process in slurry
The compactness mass defect time is upper and position on real time monitoring.
10. the detection method of -9 described in any item sleeve Grouted density quality according to claim 1, it is characterised in that: root
Factually border sleeve model, with same slurry (7) and connection reinforcing bar (1), reinforcing bar (8), using best grouting way, production is not buried
The zero defect grouting material standard specimen (15) set part as a comparison.
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