CN219957298U - A draw experimental apparatus for ground tackle groove interface agent adhesive strength - Google Patents
A draw experimental apparatus for ground tackle groove interface agent adhesive strength Download PDFInfo
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- CN219957298U CN219957298U CN202320975996.2U CN202320975996U CN219957298U CN 219957298 U CN219957298 U CN 219957298U CN 202320975996 U CN202320975996 U CN 202320975996U CN 219957298 U CN219957298 U CN 219957298U
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- layer
- core sample
- core
- anchor groove
- interface agent
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- 239000003795 chemical substances by application Substances 0.000 title claims description 33
- 239000000853 adhesive Substances 0.000 title claims description 12
- 230000001070 adhesive effect Effects 0.000 title claims description 12
- 238000005553 drilling Methods 0.000 claims abstract description 24
- 239000010410 layer Substances 0.000 claims description 47
- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- 230000000149 penetrating effect Effects 0.000 claims description 15
- 239000012790 adhesive layer Substances 0.000 claims description 14
- 239000004593 Epoxy Substances 0.000 claims description 4
- 238000007586 pull-out test Methods 0.000 claims 6
- 238000012360 testing method Methods 0.000 abstract description 9
- 238000002474 experimental method Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000013468 resource allocation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a drawing experimental device for bonding strength of an anchor groove interface agent, and relates to the field of measuring equipment. The utility model comprises a core drilling mechanism, a connecting mechanism and a drawing mechanism, wherein the core drilling mechanism is used for drilling core samples; the drawing mechanism is connected with the core sample drilled by the core drilling mechanism through the connecting mechanism. According to the utility model, the core sample with the required size is drilled out on the surface of the anchor groove, and the tensile force is applied to the core sample, so that the tensile force critical value which can be born by the concrete interfacial agent of the anchor groove can be tested on site, the tensile bonding strength of the interfacial agent is converted, and the efficiency of the tensile bonding strength test of the concrete interfacial agent of the anchor groove is greatly improved.
Description
Technical Field
The utility model relates to the field of measuring equipment, in particular to a drawing experimental device for bonding strength of an anchor groove interface agent.
Background
In the construction of water resource allocation engineering of Zhujiang delta, in order to research the tensile bond strength of the concrete interface agent of the anchorage device groove, a tensile bond strength test for detecting the concrete interface agent on site is adopted; at present, a corresponding instrument and equipment and a corresponding test and detection method do not exist in a tensile bonding strength test of a concrete interface agent for detecting an anchor groove on site.
The technical index of tensile bond strength and the test method adopted in the test are mainly referred to the test method of tensile bond strength described in chapter 6 and section 7.6 in the concrete interface treating agent (building material industry standard JC/T907-2018 of the people's republic of China), the processing mode of the test is mainly that a core sample of the combination of concrete and the interface agent is intercepted from the side wall of an anchor groove, and then the core sample is sent back to a laboratory, and the tensile bond strength of the interface agent is tested by a biaxial stretching device in the laboratory; such detection methods require a lot of time for core sample preservation, transportation and data feedback, which is extremely inefficient.
Disclosure of Invention
The utility model aims to provide a drawing experimental device for the bonding strength of an anchor groove interface agent, so as to solve the problems in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the drawing experiment device for the adhesive strength of the interface agent of the anchorage groove comprises a core drilling mechanism, a connecting mechanism and a drawing mechanism, wherein the core drilling mechanism is used for drilling a core sample, the core sample is formed by opening a core sample groove on the surface of the anchorage groove, the drawing experiment device comprises a disassembly-free template layer, an interface agent layer and a concrete layer, the disassembly-free template layer and the interface agent layer are both cut off by the core sample groove, the disassembly-free template layer is an outer layer, and the concrete layer is an inner layer connected with concrete; one end of the connecting mechanism is connected with the disassembly-free template layer of the core sample, and the other end of the connecting mechanism is connected with the clamping piece of the drawing mechanism.
The core drilling mechanism is a cylindrical core drilling machine.
The connecting mechanism comprises an adhesive layer, a connecting steel plate and connecting steel bars; one side of the connecting steel plate is connected with the disassembly-free template layer through the adhesive layer, and the other side of the connecting steel plate is fixedly connected with the connecting steel bars.
The area of the connecting steel plate is consistent with the area of the cross section of the core sample.
The adhesive layer is an epoxy high-strength adhesive layer.
The drawing mechanism is a penetrating jack, and the connecting steel bars are arranged inside the penetrating jack in a penetrating mode and are connected with clamping plates of the penetrating jack.
And a gasket used for providing stretching space for the core sample is arranged on the side wall of the disassembly-free template layer.
The beneficial effects of the utility model are as follows:
(1) according to the utility model, the core sample with the required size is drilled out on the surface of the anchor groove, and the tensile force is applied to the core sample, so that the tensile force critical value which can be born by the concrete interfacial agent of the anchor groove can be tested on site, the tensile bonding strength of the interfacial agent is converted, and the efficiency of the tensile bonding strength test of the concrete interfacial agent of the anchor groove is greatly improved.
(2) The surface of the anchor groove can be well protected by adopting a drilling and unbreakable core sample mode for testing, concrete is filled around the core sample and on the section after the experiment is finished, the surface of the anchor groove can be restored, and the damage of a tensile bonding strength test of a concrete interface agent to the surface of the anchor groove is reduced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a front view of a core sample and core sample trough of the present utility model;
FIG. 3 is a schematic cross-sectional view of a core sample drilling step according to the present utility model;
FIG. 4 is a schematic cross-sectional view of a step of stretching a core sample according to the present utility model.
In the figure, 1, a core drilling mechanism; 2. a core sample; 3. a disassembly-free template layer; 4. an interfacial agent layer; 5. a concrete layer; 6. an adhesive layer; 7. connecting steel plates; 8. connecting steel bars; 9. a drawing mechanism; 10. a gasket; 11. an anchor groove surface; 12. a core sample groove.
Detailed Description
The technical solution of the present utility model will be described in further detail with reference to the accompanying drawings, but the scope of the present utility model is not limited to the following description.
Referring to fig. 1 to 4, a drawing experiment device for bonding strength of an anchor groove interface agent is provided in an embodiment of the present utility model.
As shown in fig. 1, a drawing experiment device for the bonding strength of an anchor groove interface agent comprises a core drilling mechanism 1, a connecting mechanism and a drawing mechanism 9 for drilling a core sample 2, wherein the core sample 2 is formed by a core sample groove 12 formed in the surface of the anchor groove, the core sample comprises a disassembly-free template layer 3, an interface agent layer 4 and a concrete layer 5, the disassembly-free template layer 3 and the interface agent layer 4 are all cut off by the core sample groove 12, the disassembly-free template layer 3 is an outer layer, and the concrete layer 5 is an inner layer connected with the concrete; one end of the connecting mechanism is connected with the disassembly-free template layer 3 of the core sample 2, and the other end of the connecting mechanism is connected with a clamping piece of the drawing mechanism 9.
The core drilling mechanism 1 is a cylindrical core drilling machine; because the anchor groove itself comprises a 20mm thick tamper-free template layer 3 and a 10mm thick interfacial agent layer 4, in combination with the testing method of the device, it is necessary to drill a 20mm thick tamper-free template layer 3, a 10mm thick interfacial agent layer 4 and a 20mm thick concrete layer 5 as core samples 2.
In combination with the size requirement of the core sample 2 to be drilled, as shown in fig. 2, in the preparation step of drilling the core sample 2 for carrying out the drawing experiment of the interface agent bonding strength of the anchor groove, a cylindrical core drill can drill a core sample groove 12 with a certain groove width and a total depth of 50mm around the core sample 2 on the surface 11 of the anchor groove, but attention is paid to incapability of breaking the connection between the core sample 2 and the concrete layer 5 in the anchor groove, so that the concrete layer 5 in the anchor groove can be used as a stress point, and the drawing mechanism 9 in the device is utilized to apply unidirectional drawing force to the core sample 2, so that the drawing effect identical to that of a bidirectional drawing device in a laboratory can be achieved.
The connecting mechanism comprises an adhesive layer 6, a connecting steel plate 7 and connecting steel bars 8; one side of the connecting steel plate 7 is connected with the disassembly-free template layer 3 through the adhesive layer 6, and the other side is fixedly connected with the connecting steel bar 8.
The area of the connecting steel plate 7 is consistent with the cross-sectional area of the core sample 2, so that the stressed area A of the core sample 2 can be ensured to be a fixed value, and errors in subsequent calculation are avoided.
The adhesive layer 6 is an epoxy high-strength adhesive layer, and the epoxy high-strength adhesive with the bonding strength far higher than that of the interface agent is adopted as the adhesive layer 6 for bonding the connecting steel plate 7 and the core sample 2, so that the bonding position of the interface agent layer 4 of the core sample 2 is inevitably broken when the tensile force is gradually increased, and the problem that the bonding position of the connecting steel plate 7 and the core sample 2 is broken in the process of increasing the tensile force is avoided, so that the acquisition of experimental data is influenced is solved.
The drawing mechanism 9 is a penetrating jack, and the connecting steel bars 8 are arranged in the penetrating jack in a penetrating way and are connected with clamping plates of the penetrating jack; one end of the penetrating jack is abutted against the surface 11 of the anchor groove, and then a pumping force in an outward direction is provided for the connecting steel bars 8 penetrating inside, so that the effect of applying a stretching force to the core sample 2 is achieved; the penetrating jack is common equipment in the market, and the specific working principle is not repeated here.
A gasket 10 for providing a stretching space for the core sample 2 is arranged on the side wall of the disassembly-free template layer 3; because the aperture of the piercing jack is smaller than that of the piercing jack, the gasket 10 is required to provide a stretching space for the core sample 2, ensuring that the stretching process is smoothly performed.
The working principle of the utility model is as follows:
as shown in fig. 3, first, a core sample 2 to be inspected is drilled out on an anchor groove surface 11 by using a core drilling mechanism 1;
then as shown in fig. 4, connect core sample 2 and drawing device through connecting device, promote drawing device's tensile force between later, when drawing device breaks core sample 2 through connecting device, in time record the tensile force numerical value in the walk-in, through the formula: fc=f/a (where fc is the interfacial adhesive bond strength in MPa, F is the tensile force value, N in a, a is the core sample 2 contact area, mm in mm) and the interfacial adhesive bond strength is calculated.
The foregoing is merely a preferred embodiment of the utility model, and it is to be understood that the utility model is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.
Claims (7)
1. A draw experimental apparatus for ground tackle groove interface agent bonding strength, its characterized in that: the core drilling device comprises a core drilling mechanism (1), a connecting mechanism and a drawing mechanism (9) which are used for drilling a core sample (2), wherein the core sample (2) is formed by opening a core sample groove (12) on the surface of an anchor groove, the core drilling device comprises a disassembly-free template layer (3), an interface agent layer (4) and a concrete layer (5), the disassembly-free template layer (3) and the interface agent layer (4) are all cut off by the core sample groove (12), the disassembly-free template layer (3) is an outer layer, and the concrete layer (5) is an inner layer connected with concrete; one end of the connecting mechanism is connected with the disassembly-free template layer (3) of the core sample (2), and the other end of the connecting mechanism is connected with a clamping piece of the drawing mechanism (9).
2. The pull-out test device for the adhesive strength of an anchor groove interface agent according to claim 1, wherein: the core drilling mechanism (1) is a cylindrical core drilling machine.
3. The pull-out test device for the adhesive strength of an anchor groove interface agent according to claim 1, wherein: the connecting mechanism comprises an adhesive layer (6), a connecting steel plate (7) and connecting steel bars (8); one side of the connecting steel plate (7) is connected with the disassembly-free template layer (3) of the core sample (2) through the adhesive layer (6), and the other side of the connecting steel plate is fixedly connected with the connecting steel bar (8).
4. A pull-out test apparatus for anchor groove interface adhesive bond strength as recited in claim 3, wherein: the area of the connecting steel plate (7) is consistent with the cross-sectional area of the core sample (2).
5. A pull-out test apparatus for anchor groove interface adhesive bond strength as recited in claim 3, wherein: the adhesive layer (6) is an epoxy high-strength adhesive layer.
6. A pull-out test apparatus for anchor groove interface adhesive bond strength as recited in claim 3, wherein: the drawing mechanism (9) is a penetrating jack, and the connecting steel bars (8) are arranged inside the penetrating jack in a penetrating mode and are connected with clamping plates of the penetrating jack.
7. The pull-out test device for the adhesive strength of an anchor groove interface agent according to claim 2, wherein: the side wall of the disassembly-free template layer (3) is provided with a gasket (10) for providing a stretching space for the core sample (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320975996.2U CN219957298U (en) | 2023-04-26 | 2023-04-26 | A draw experimental apparatus for ground tackle groove interface agent adhesive strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320975996.2U CN219957298U (en) | 2023-04-26 | 2023-04-26 | A draw experimental apparatus for ground tackle groove interface agent adhesive strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219957298U true CN219957298U (en) | 2023-11-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320975996.2U Active CN219957298U (en) | 2023-04-26 | 2023-04-26 | A draw experimental apparatus for ground tackle groove interface agent adhesive strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219957298U (en) |
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2023
- 2023-04-26 CN CN202320975996.2U patent/CN219957298U/en active Active
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