CN211426189U - A impervious device for detecting concrete entity structure - Google Patents
A impervious device for detecting concrete entity structure Download PDFInfo
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- CN211426189U CN211426189U CN201921857807.1U CN201921857807U CN211426189U CN 211426189 U CN211426189 U CN 211426189U CN 201921857807 U CN201921857807 U CN 201921857807U CN 211426189 U CN211426189 U CN 211426189U
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Abstract
The utility model discloses an anti-permeability device for detecting concrete solid structure, which comprises a sealing cylinder body (1), wherein the sealing cylinder body (1) is positioned in the middle of a lower sealing cover (2), and a plurality of screw rods (5) are longitudinally arranged on the lower sealing cover (2) around the periphery of the sealing cylinder body (1); the sealing device is characterized in that a cylinder test piece (13) is placed in the sealing cylinder body (1) after a lower rubber sealing washer (3) is placed in the sealing cylinder body (1), the outer diameter of the cylinder test piece (13) is the same as the inner diameter of the sealing cylinder body (1), an upper rubber sealing washer (14) and a sealing steel ring (4) are placed on the top surface of the cylinder test piece (13) in sequence, the upper end face of the sealing cylinder body (1) is covered with a limiting metal ring plate (6), and the periphery of the upper limiting metal ring plate (6) is locked through a nut (12) after passing through a screw rod (5). The utility model discloses can detect the impervious performance of solid structure concrete, make the testing result more have authenticity, representativeness.
Description
Technical Field
The utility model relates to a concrete impermeability test equipment field specifically is a impervious device for detecting concrete entity structure.
Background
From the 20 th century and the 30 th century, the construction field focuses on the impermeability of concrete, and large-scale hydraulic engineering construction such as dams, ditches and tunnels begins, and once the impermeability of concrete is insufficient, water seepage and other related accidents can be caused. With the continuous development of society, high-performance concrete gradually replaces high-strength concrete, because people recognize that the durability of the high-performance concrete is more and more important, and the anti-permeability performance of the high-performance concrete is more and more important.
At present, no matter highway engineering, railway engineering and hydraulic engineering, the requirement of impermeability is provided for concrete entities such as tunnel linings, dams and the like. Taking a tunnel two-lining as an example, a concrete impermeability tester commonly used in China at present can only adopt a concrete impermeability test mold (a round table body with the upper diameter of 175mm, the lower diameter of 185mm and the height of 150 mm) to sample a mixture before pouring the two-lining concrete, the mixture is manually inserted and tamped to form a test piece, the two-lining concrete is fixed by a lining trolley tool, concrete is pumped or pushed into a window through opening a window and a chute, flows to each part of the trolley and is influenced by the tool, the process and the arrangement of reinforcing steel bars inside the primary trolley, the uniformity and the discreteness of the concrete after entering the mold are poor, the discreteness are large, and the impermeability of the concrete entity structure of the two-lining concrete cannot be effectively, truly and objectively reflected after the test piece is formed, so how to accurately and truly detect the impermeability of the concrete entity structure, and becomes one of the problems which needs to be solved urgently.
Disclosure of Invention
The utility model aims at providing an impervious device for detecting concrete entity structure can measure the impervious performance that the core test piece was got to the entity concrete.
The utility model discloses an adopt following technical scheme to realize:
an anti-permeability device for detecting a concrete solid structure comprises a sealing cylinder body, wherein the sealing cylinder body is positioned in the middle of a lower sealing cover, and a plurality of screw rods are longitudinally arranged on the lower sealing cover around the periphery of the sealing cylinder body; placing a lower rubber sealing washer in the sealing cylinder, then placing a cylindrical test piece in the sealing cylinder, wherein the outer diameter of the cylindrical test piece is the same as the inner diameter of the sealing cylinder, sequentially placing an upper rubber sealing washer and a sealing steel ring on the top surface of the cylindrical test piece, covering the upper end surface of the sealing cylinder with a limiting metal ring plate, and locking the periphery of the upper limiting metal ring plate through a screw rod by a nut, namely, hermetically installing the cylindrical test piece in the sealing cylinder by the upper limiting metal ring plate through the sealing steel ring; the center of the lower sealing cover is provided with a water inlet hole, the water inlet hole is connected with a constant pressure device through a pipeline and a branch control valve, and the constant pressure device is connected with a pressurizing device through a pipeline and a master control valve.
During preparation, a concrete coring test piece with the side surface coated with sealant is placed in a closed cylinder body and is fully contacted with the test piece through an upper rubber gasket and a lower rubber gasket; and a closed steel ring and an upper limiting metal ring plate are arranged on the upper sealing rubber gasket and are screwed up by a screw cap.
During operation, the main control valve and the branch control valve are opened, the pressurizing device and the pressure stabilizing device are opened, the test piece is continuously pressurized to the test pressure through the water inlet hole, the main control valve is closed, the pressure is stabilized to the end of the test, whether water stains exist on the surface of the test piece is observed, and whether the impermeability of the test piece meets the requirement or not is judged.
The utility model discloses get the core test piece with sealed metal cylinder and concrete and combine together, when screwing up the bolt on the airtight metal cylinder, the rubber packing ring of lower part is close to with the test piece on the test piece, and is waterproof. So the combination makes this survey device can detect the impervious grade of the cylinder test piece that the solid concrete coring was processed and guarantee the leakproofness of apparatus again, makes the testing result more accurate and true.
The utility model relates to a rationally, fine practical application is worth having.
Drawings
Fig. 1 shows a schematic structural view of the impermeability measurement device of the present invention.
Figure 2 shows a schematic view of an array of multiple barrier devices.
In the figure: 1-sealing cylinder body, 2-lower sealing cover, 3-lower rubber sealing washer, 4-sealing steel ring, 5-bolt, 6-upper limiting metal ring plate, 7-branch control valve, 8-water inlet hole, 9-master control valve, 10-constant pressure device, 11-pressurizing device, 12-nut, 13-cylinder test piece and 14-upper rubber sealing washer.
Detailed Description
The following describes in detail specific embodiments of the present invention with reference to the accompanying drawings.
The utility model provides an impervious device for detecting concrete entity structure, is including the pressure device that is used for airtight metal cylinder, lower sealed lid, last spacing becket, last sealing steel ring, upper and lower sealing rubber packing ring, branch control valve, total control valve, force (forcing) pump, constant voltage equipment to constitute.
As shown in fig. 1, a sealing cylinder 1 is placed in the middle of a lower sealing cover 2, a plurality of screws 5 are longitudinally arranged on the lower sealing cover 2 around the periphery of the sealing cylinder 1, and the screws can be directly welded on the lower sealing cover, or screwed in reserved threaded holes of the lower sealing cover or fixing nuts; placing a lower rubber sealing washer 3 in a sealing cylinder 1, then placing a cylinder test piece 13 in the sealing cylinder 1, wherein the outer diameter of the cylinder test piece 13 is the same as the inner diameter of the sealing cylinder 1, sequentially placing an upper rubber sealing washer 14 and a sealing steel ring 4 on the top surface of the cylinder test piece 13, covering an upper end surface of the sealing cylinder 1 with a limiting metal ring plate 6, passing the periphery of the upper limiting metal ring plate 6 through a screw 5, and then locking the upper limiting metal ring plate 6 through a nut 12, namely, the upper limiting metal ring plate 6 seals and installs the cylinder test piece 13 in the sealing cylinder 1 through the sealing steel ring; the center of the lower sealing cover 2 is provided with a water inlet hole 8, the water inlet hole 8 is connected with a constant pressure device 10 through a pipeline and a branch control valve 7, and the constant pressure device 10 is connected with a pressurizing device 11 through a pipeline and a master control valve 9.
Aiming at a secondary lining solid structure, the anti-permeability device drills a core by using a drill bit with the diameter of 100mm for sampling, the core sample is cut and processed into a cylindrical test piece with the height of 100mm, a cylindrical sealing cylinder with the diameter of 100mm and the height of 105mm is designed, the sealing metal cylinder is a cylindrical cylinder with the same upper and lower diameter, and the optimal inner diameter of the cylinder is the same as the diameter of a concrete coring test piece; the height of the cylinder body is higher than that of the coring test piece, and the height of the sealing cylinder body is slightly smaller than the sum of the height of the core sample, the height of the rubber gasket and the sealing steel ring, so that the upper limiting metal ring plate can enable the sealing cylinder body not to be subjected to water seepage through downward pressure. A rubber gasket with the same core sample diameter is arranged at the lower part in the sealing cylinder body so as to ensure that the lower sealing cover is tightly attached to the test piece without water leakage; the upper part in the sealing cylinder body is provided with a sealing rubber gasket and a sealing steel ring, and an upper limiting metal ring plate is arranged on the upper part of the sealing steel ring so as to ensure that the test piece is closely attached to the upper sealing rubber gasket and does not seep water. The method comprises the steps of sealing the side part of a cylindrical test piece by epoxy resin or other sealing materials, placing a steel gasket in a cylinder after the side of the test piece is sealed, placing a lower rubber sealing washer, placing the test piece in a sealed metal cylinder with the same inner diameter as the test piece, sequentially placing an upper rubber sealing washer and a sealing steel ring, limiting the test piece to move upwards by an upper limiting metal ring plate, tightening a bolt to enable the upper and lower rubber sealing washers to be tightly attached to the test piece in a watertight manner by extruding the test piece, and enabling the rubber gasket to be tightly attached to the sealed metal cylinder in a watertight manner. The core test piece is combined with the sealing metal cylinder concrete, so that the combination ensures that the measuring device can detect the impermeability grade of the cylindrical test piece processed by solid concrete coring and also ensures the tightness of the measuring instrument, and the detection result is more accurate and real.
A plurality of sealing cylinders can be arranged on the same lower sealing cover, as shown in fig. 2, 6 anti-permeability devices share one lower sealing cover, a water inlet hole is formed in the central position of each sealing cylinder on the lower sealing cover, each water inlet hole is controlled by 1 branch control valve 7, but is controlled by a main control valve 9 and is communicated with a constant pressure device 10 and a pressurizing device 11; the sealing cylinder body 1 is a hollow cylinder with the inner diameter consistent with the diameter of the core sample, a sealing rubber gasket 3 is arranged when the sealing cylinder body is connected with the lower sealing cover 2, the sealing rubber gasket and a sealing steel ring 4 are arranged on the upper portion of the core sample test piece, the upper portion of the sealing steel ring 4 is sealed by an upper limiting metal ring plate 6, and a nut 12 is screwed down to enable the core sample test piece to be closely attached to the sealing rubber gaskets on the upper portion and the lower portion. During the concrete operation, the concrete coring test piece 13 with the side surface coated with sealant is placed in the closed cylinder 1 and fully contacted with the test piece 13 through the upper and lower rubber gaskets; a sealing steel ring 4 and an upper limiting metal ring plate 6 are arranged on the upper sealing rubber gasket and are screwed by a screw cap 12.
During detection, the main control valve 9 and the branch control valve 7 are opened firstly, the pressurizing device 11 and the pressure stabilizing device 10 are opened, the test piece is continuously pressurized to the testing pressure through the water inlet hole 8, the main control valve 9 is closed, the pressure is stabilized to the end of testing, whether water marks exist on the surface of the test piece in each sealing cylinder is observed, whether the impermeability of the test piece meets the requirements or not is judged, the impermeability of concrete with an entity structure can be detected, and the determination result is more authentic and representative.
The above, only be the practical operation case of the utility model, not right the utility model discloses do the restriction in any form, all be according to the utility model discloses a technical content does any simple modification to above embodiment and all still belongs to the technical scheme of the utility model.
Claims (2)
1. The utility model provides a impervious device for detecting concrete entity structure which characterized in that: the sealing device comprises a sealing cylinder body (1), wherein the sealing cylinder body (1) is positioned in the middle of a lower sealing cover (2), and a plurality of screw rods (5) are longitudinally arranged on the lower sealing cover (2) around the periphery of the sealing cylinder body (1); placing a lower rubber sealing washer (3) in the sealing cylinder (1), placing a cylinder test piece (13) in the sealing cylinder (1), wherein the outer diameter of the cylinder test piece (13) is the same as the inner diameter of the sealing cylinder (1), placing an upper rubber sealing washer (14) and a sealing steel ring (4) on the top surface of the cylinder test piece (13) in sequence, covering an upper end surface of the sealing cylinder (1) with a limiting metal ring plate (6), and locking the periphery of the upper limiting metal ring plate (6) through a screw (5) by a nut (12), namely, hermetically installing the cylinder test piece (13) on the sealing cylinder (1) by the upper limiting metal ring plate (6) through the sealing steel ring (4); the central opening of the lower sealing cover (2) is provided with a water inlet hole (8), the water inlet hole (8) is connected with a constant pressure device (10) through a pipeline and a branch control valve (7), and the constant pressure device (10) is connected with a pressurizing device (11) through a pipeline and a master control valve (9).
2. The impermeability device for detecting concrete solid structures according to claim 1, wherein: and the side surface of the cylindrical test piece (13) is wrapped by epoxy resin or sealing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921857807.1U CN211426189U (en) | 2019-10-31 | 2019-10-31 | A impervious device for detecting concrete entity structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921857807.1U CN211426189U (en) | 2019-10-31 | 2019-10-31 | A impervious device for detecting concrete entity structure |
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| CN211426189U true CN211426189U (en) | 2020-09-04 |
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| CN201921857807.1U Active CN211426189U (en) | 2019-10-31 | 2019-10-31 | A impervious device for detecting concrete entity structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112129683A (en) * | 2020-09-20 | 2020-12-25 | 惠州市大禹工程质量检测中心有限公司 | Construction engineering quality concrete impermeability test detection device |
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2019
- 2019-10-31 CN CN201921857807.1U patent/CN211426189U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112129683A (en) * | 2020-09-20 | 2020-12-25 | 惠州市大禹工程质量检测中心有限公司 | Construction engineering quality concrete impermeability test detection device |
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