CN212301393U - Sleeve grouting compactness detection device based on resistivity method - Google Patents
Sleeve grouting compactness detection device based on resistivity method Download PDFInfo
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- CN212301393U CN212301393U CN202020226281.3U CN202020226281U CN212301393U CN 212301393 U CN212301393 U CN 212301393U CN 202020226281 U CN202020226281 U CN 202020226281U CN 212301393 U CN212301393 U CN 212301393U
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Abstract
The invention discloses a sleeve grouting compactness detection device based on a resistivity method, wherein an electrode probe is arranged in a grouting metal sleeve, and an externally-connected portable comprehensive tester excites current signals to be transmitted on a cable and the probe, so that when a medium around the electrode probe changes, the resistance measured by the probe also changes, and further, the resistance signal received by the portable comprehensive tester also changes and is displayed on a display, and finally, the resistance signal is stored in a data storage device of the portable comprehensive tester; finally, remote transmission and uploading of detection data are carried out through a wireless network, and therefore the region with insufficient grouting inside the metal sleeve is effectively detected. Compared with other detection methods, the method has the advantages of high detection precision, convenience in implementation and certain use value.
Description
Technical Field
The utility model belongs to assembled structure detection area, concretely relates to closely knit degree detection device of grout metal sleeve and method based on resistivity method.
Background
Along with the rapid development of economy and urbanization in China, the building industrialization process is accelerated, and the traditional cast-in-place building technology cannot meet the development requirements of the building industry due to unreasonable resource allocation, low construction mechanization degree and poor construction operation environment. The assembly type building is taken as a standardized green building form which is developed in recent years, has high efficiency, high speed, energy conservation, environmental protection and guaranteed quality in construction, receives attention from the building industry, and is greatly supported and popularized by related ministries in the national and regional building industries.
The earthquake resistance and integrity of the fabricated building are important influencing factors restricting the development of the fabricated building, and in order to improve the earthquake resistance and integrity of the fabricated building, reliable connection between fabricated building components needs to be ensured. The common assembly type building connection mode mainly comprises steel bar sleeve grouting connection, the integrity of the assembly type building is effectively guaranteed by the connection mode, the shock resistance of the assembly type building is correspondingly improved, and the assembly type building connection mode is widely applied to building structures such as prefabricated shear walls of buildings, assembled box girders of bridges, piers of bridges and the like.
The steel bar sleeve is mainly composed of an assembly type building component connecting steel bar and a sleeve. At present, the conventional method for detecting the grouting compactness degree in the grouting metal sleeve is to adopt methods such as unidirectional tension, high-stress repeated tension-compression test, large-deformation repeated tension-compression test and the like for a grouting metal sleeve connecting joint test piece; however, the defects of the sleeve grouting material are concealed, so that the concrete defect positions of the grouting sleeve cannot be well known by detecting the compaction degree of the sleeve grouting material by the conventional method, so that the constructor can be conveniently and pertinently reinforced. On the basis of a nondestructive detection method, the positions and the degrees of the defects of the compactness of the sleeve grouting material cannot be accurately judged by an ultrasonic method, an impact echo method, an infrared thermal imaging method and the like, and the detection precision is low; although the X-ray industrial CT method can clearly obtain the internal structure, compactness and defect distribution images of the grouting metal sleeve and realize the grouting compactness detection of the grouting metal sleeve, the method has the problems of excessively large and complicated test equipment and high manufacturing cost of detection instruments, and simultaneously, the methods also have the problems of ray radiation, environmental pollution and the like, which are harmful to human bodies, so the X-ray industrial CT method cannot be industrially applied.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a closely knit degree detection device of sleeve grout based on resistivity method.
The utility model provides a technical scheme that its technical problem adopted is:
a sleeve grouting compactness detection device based on a resistivity method comprises a grouting metal sleeve, a pouring template, a portable intelligent tester and an electrode probe; the electrode probe is sequentially connected with the pouring template and the portable intelligent tester through a pressure-resistant anticorrosive waterproof cable, and the pouring template has a waterproof function; the portable intelligent tester can detect the resistance value of the grouting sleeve corresponding to the electrode probe in real time and record the resistance value; the electrode probe penetrates through the grouting metal sleeve from top to bottom until the bottom of the grouting metal sleeve; the electrode probe has the characteristics of no water adhesion and no dry and wet concrete adhesion.
Further, the grouting metal sleeve comprises a hollow metal sleeve, a rubber plug, embedded steel bars, connecting steel bars and a rubber plug; the upper side and the lower side of the hollow metal sleeve are respectively provided with a grout outlet and a grout filling port; the embedded steel bars and the connecting steel bars are respectively embedded in the upper end and the lower end of the hollow metal sleeve; the rubber plug is plugged at the grout outlet; the rubber stopper is connected to the top of the hollow metal sleeve.
Further, the rubber buffer is equipped with the through-hole that supplies embedded bar and electrode probe to penetrate.
Furthermore, the embedded steel bars and the connecting steel bars are on the same straight line.
Furthermore, except the end part of the electrode probe, the surface of the electrode probe is coated with hydrophobic materials; the hydrophobic material has the characteristics of no water adhesion and no dry and wet concrete adhesion.
Further, the electrode probe adopts 200-400-mesh irregular quartz sand for sand blasting treatment.
Further, the electrode probe can be installed in 3 ways: inside the accessible top rubber buffer inserts metal sleeve, also accessible rubber end cap gets into inside the metal sleeve from the grout outlet, also can insert inside the metal sleeve with connecting reinforcement after parallelly connected.
Further, the hydrophobic material is a polysilazane modified material; the polysilazane modified material comprises 10 parts of polysilazane, 0.4 part of silane coupling agent, 0.2 part of silicon dioxide and 0.08 part of perfluoropolyether in parts by weight; and after the sand blasting process is finished, the polysilazane modified material is sintered on an electrode probe by using tetrafluoroethylene.
A sleeve grouting compactness detection device based on a resistivity method can detect a grouting metal sleeve according to the following steps:
inserting an electrode probe from top to bottom through a rubber plug at the top of the hollow metal sleeve until the electrode probe reaches the bottom of the hollow metal sleeve; then, the electrode probe is sequentially connected with the pouring template and the portable intelligent tester through a cable;
secondly, opening the portable intelligent tester, observing the resistance value of each electrode probe before grouting, and setting a threshold range;
grouting the metal sleeve, and recording the resistance value change condition measured by the electrode probe in the rising process of the liquid level of the slurry in the sleeve;
fourthly, if the resistance value measured by the electrode probe with a certain depth in the sleeve is reduced to be within a set threshold range, the position is fully grouted; if the resistance value measured by the electrode probe is not reduced to the set threshold value range when grouting is finished, grout at the position is not full; if the resistance value measured by the electrode probe is reduced to a set threshold value range when grouting is finished, and then the resistance value is restored to the resistance value before grouting, the liquid level of the grout at the position falls back, and the grouting is not full.
Fifthly, if finding that there is the defect in grout sleeve plumpness, then paste the two-dimensional code on this grout sleeve surface, adopt portable intelligent tester's bar code scanner to scan this two-dimensional code simultaneously, the record with save lack this grout sleeve serial number, for the later stage reinforcement provides positional information.
Furthermore, the electrode probe can be embedded in a plurality of positions in the sleeve according to the detection position requirement, so that the grouting fullness detection at different depths is realized.
The utility model has the advantages that: the utility model forms a current loop with the electrode probe through the portable intelligent tester; when the medium around the probe changes, the measured resistance value also changes, and then the resistance value range is compared with the resistance value range of the grouting material set by the intelligent tester, the grouting fullness result of the sleeve is given in real time, and finally the detection data is stored in the portable intelligent tester. Compared with the prior art, the utility model discloses not only detect with low costs, equipment portable but also detect the precision and also high.
Drawings
The following further describes the present invention with reference to the drawings and examples.
Fig. 1 is a schematic diagram of the overall structure of the present invention;
fig. 2 is a schematic structural view of the rubber stopper of the present invention;
fig. 3 is the structure schematic diagram of the electrode probe of the utility model penetrating through the rubber plug.
Detailed Description
As shown in fig. 1-3, a sleeve grouting compactness detection device based on a resistivity method comprises a grouting metal sleeve 1, a pouring template 4, a portable intelligent tester 2 and an electrode probe 3; the electrode probe 3 is sequentially connected with the pouring template 4 and the portable intelligent tester 2 through a pressure-resistant anti-corrosion waterproof cable 5, and the pouring template 4 has a waterproof function. The grouting metal sleeve 1 is composed of a hollow metal sleeve 11, a rubber plug 12, cement slurry 13, embedded steel bars 14, connecting steel bars 15 and a rubber plug 16; the upper side and the lower side of the hollow metal sleeve 11 are respectively provided with a grout outlet 111 and a grout inlet 112, the rubber plug 12 is positioned at the top of the hollow metal sleeve 11, and a through hole 121 for the embedded steel bar 14 and the electrode probe 3 to penetrate is arranged on the rubber plug; the electrode probe 3 is connected to the portable intelligent tester 2 through a cable 5; the electrode probe 3 passes through the through hole 121 of the rubber plug 12 until reaching the inner part of the cylinder body of the hollow metal sleeve 11; embedded steel bars 14 and connecting steel bars 15 are respectively embedded at the upper end and the lower end in the hollow metal sleeve 11; after the electrode probe 3, the embedded steel bar 14 and the connecting steel bar 15 are installed in the hollow metal sleeve 11, the hollow metal sleeve 11 is filled with the cement slurry 13 entering from the grouting opening 112, the grout outlet 111 is blocked by the rubber plug 16, and the cement slurry 13 is solidified in the hollow metal sleeve 11; the electrode probe 3 has the characteristics of no water adhesion and no dry and wet concrete adhesion.
The portable intelligent tester 2 consists of a resistance testing and analyzing device, a display, a built-in power supply, a data storage device and a two-dimensional code scanner; the grouting compactness detection information two-dimensional code generating and printing function is achieved, the resistance value measured by the electrode probe 3 is obtained through a built-in resistance testing and analyzing device and is displayed on a display of the grouting compactness detection information two-dimensional code generating and printing function, field test data can be stored in a data storage device of the grouting detection information real-timely and can also be transmitted to a computer and a mobile phone end through a wireless network, the two-dimensional code scanner scans the two-dimensional code on the surface of the prefabricated part where the sleeve is located and records code scanning information, and grouting detection data and part information can be linked.
In this embodiment, except for the tip of the electrode probe 3, the surface of the electrode wire is coated with a hydrophobic material. The electrode probe 3 is firstly subjected to sand blasting treatment by using irregular quartz sand with 200-400 meshes to ensure that the end part is not subjected to sand blasting.
The hydrophobic material comprises the following components: the polysilazane modified material comprises 10 parts of polysilazane, 0.4 part of silane coupling agent, 0.2 part of silicon dioxide and 0.08 part of perfluoropolyether according to the parts by weight; the hydrophobic material can also comprise the following components: after the sand blasting process is finished, a special process is adopted, and tetrafluoroethylene is sintered on the electrode.
As shown in fig. 1-3, the utility model relates to a closely knit degree detection device of sleeve grout based on resistivity method can detect grouting metal sleeve according to following step:
firstly, inserting an electrode probe 3 into a hollow metal sleeve 11 through a rubber plug 12 at the top of the sleeve, connecting the upper part of the electrode probe 3 with a cable 5, and leading out a component pouring template 4 from the end of a cable 3 connected with a portable intelligent tester 2 when pouring an assembled concrete component;
before grouting the hollow metal sleeve 11, connecting the cable 3 with the portable intelligent tester 2, starting up and observing the resistance value of each electrode probe 3 before grouting;
thirdly, grouting the metal sleeve 11, and deducing the grouting fullness degree in the sleeve 11 according to the resistance value change condition measured by the electrode probe 3 in the slurry liquid level rising process in the sleeve 11;
if the resistance value measured by the electrode probe 3 at a certain depth in the sleeve 11 is reduced to be within a set threshold range, the position is fully grouted; if the resistance value measured by the electrode probe 3 is not reduced to the set threshold range at the end of grouting, the grout at the position is not full; if the resistance value measured by the electrode probe 3 is reduced to a set threshold value range when grouting is finished, and then the resistance value is restored to the resistance value before grouting, the slurry liquid level at the position falls back, and grouting is not full.
Fifthly, when some assembled component detects that the grouting fullness of the sleeve 11 has defects, scanning the two-dimensional code pasted on the surface of the prefabricated component by adopting a code scanner of the intelligent tester 2, recording and storing the serial number of the defective component, and providing position information for later reinforcing.
Sixthly, the electrode wire embedding method of the utility model has a plurality of ways. Depending on the type of the sleeve 11, the electrode probe 3 may be embedded in the sleeve 11, may be embedded from the grout outlet 111 when the sleeve 11 is grouted, or may be inserted into the metal sleeve 11 after being bonded to the connecting steel bar 14.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.
Claims (9)
1. A sleeve grouting compactness detection device based on a resistivity method comprises a grouting metal sleeve, a pouring template, a portable intelligent tester and an electrode probe; the portable intelligent tester is characterized in that the electrode probe is sequentially connected with the pouring template and the portable intelligent tester through a pressure-resistant, corrosion-resistant and waterproof cable, and the pouring template has a waterproof function; the portable intelligent tester can detect the resistance value of the grouting sleeve corresponding to the electrode probe in real time and record the resistance value; the electrode probe penetrates through the grouting metal sleeve from top to bottom until the bottom of the grouting metal sleeve; the electrode probe has the characteristics of no water adhesion and no dry and wet concrete adhesion.
2. The device for detecting the grouting compactness of the sleeve based on the resistivity method according to claim 1, wherein the grouting metal sleeve comprises a hollow metal sleeve, a rubber plug, embedded steel bars, connecting steel bars and a rubber plug; the upper side and the lower side of the hollow metal sleeve are respectively provided with a grout outlet and a grout filling port; the embedded steel bars and the connecting steel bars are respectively embedded in the upper end and the lower end of the hollow metal sleeve; the rubber plug is plugged at the grout outlet; the rubber stopper is connected to the top of the hollow metal sleeve.
3. The device for detecting the grouting compactness of the sleeve based on the resistivity method according to claim 2, wherein the rubber plug is provided with a through hole for the embedded steel bar and the electrode probe to penetrate through.
4. The sleeve grouting compactness detection device based on the resistivity method according to claim 2, characterized in that: the embedded steel bars and the connecting steel bars are on the same straight line.
5. The device for detecting the grouting compactness of the sleeve based on the resistivity method according to any one of claims 1 to 4, is characterized in that: except the end head part, the surface of the electrode probe is coated with hydrophobic materials; the hydrophobic material has the characteristics of no water adhesion and no dry and wet concrete adhesion.
6. The sleeve grouting compactness detection device based on the resistivity method according to claim 5, characterized in that: the electrode probe is subjected to sand blasting treatment by using 200-400-mesh irregular quartz sand.
7. The sleeve grouting compactness detection device based on the resistivity method according to claim 5, characterized in that: the electrode probe is installed in 3 ways: inside the accessible top rubber buffer inserts metal sleeve, also accessible rubber end cap gets into inside the metal sleeve from the grout outlet, also can insert inside the metal sleeve with connecting reinforcement after parallelly connected.
8. The device for detecting the grouting compactness of the sleeve based on the resistivity method, according to claim 5, is characterized in that the hydrophobic material is a polysilazane modified material; the polysilazane modified material comprises 10 parts of polysilazane, 0.4 part of silane coupling agent, 0.2 part of silicon dioxide and 0.08 part of perfluoropolyether in parts by weight; and after the sand blasting process is finished, the polysilazane modified material is sintered on an electrode probe by using tetrafluoroethylene.
9. The sleeve grouting compactness detection device based on the resistivity method according to claim 5, characterized in that: according to the requirement of the detection position, the electrode probe can be embedded at a plurality of positions in the sleeve so as to realize the detection of grouting plumpness at different depths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020226281.3U CN212301393U (en) | 2020-02-28 | 2020-02-28 | Sleeve grouting compactness detection device based on resistivity method |
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| CN202020226281.3U CN212301393U (en) | 2020-02-28 | 2020-02-28 | Sleeve grouting compactness detection device based on resistivity method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307875A (en) * | 2020-02-28 | 2020-06-19 | 广州市市政工程试验检测有限公司 | Resistivity method based sleeve grouting compactness detection device and method |
| CN114001847A (en) * | 2021-12-07 | 2022-02-01 | 哈尔滨工业大学 | Self-monitoring method for stress of connection node of grouting sleeve for assembly structure |
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2020
- 2020-02-28 CN CN202020226281.3U patent/CN212301393U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307875A (en) * | 2020-02-28 | 2020-06-19 | 广州市市政工程试验检测有限公司 | Resistivity method based sleeve grouting compactness detection device and method |
| CN114001847A (en) * | 2021-12-07 | 2022-02-01 | 哈尔滨工业大学 | Self-monitoring method for stress of connection node of grouting sleeve for assembly structure |
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