Testing device for testing water channeling prevention capability of double-sticky waterproof material

Abstract

The utility model relates to the technical field of waterproof material performance detection, and particularly provides a testing device for testing the water channeling prevention capability of a double-sticky waterproof material, which comprises a testing component and a sealing device, the test component comprises an annular lining structure, the sealing device comprises a first sealing assembly and a second sealing assembly, and the first sealing assembly, the test component and the second sealing assembly are sequentially connected to form a sealed cavity; the annular lining structure is a composite lining structure, prefabricated cracks are formed in the annular lining structure, and the prefabricated cracks are formed in different positions in the circumferential direction of the annular lining structure. The test device provided by the utility model is simple in structure and convenient to operate, the test component is a composite lining structure for simulating the practical application of the double-sticky waterproof material, and the use condition of the double-sticky waterproof material is fully considered, so that the test result is more practical.

Description

Technical Field

[0001] The utility model relates to the technical field of waterproof material performance detection, and particularly relates to a test device for testing the water channeling prevention ability of a double-sided adhesive waterproof material. Background Technique

[0002] The tunnel composite lining structure is composed of a primary support concrete layer, a waterproof layer, and a secondary lining concrete layer. There is no adhesion between the waterproof layer in the traditional composite lining structure and the primary support concrete layer and the secondary lining concrete layer, which allows groundwater to flow freely along the waterproof layer (i.e., water channeling). Once it flows to the damaged part of the waterproof board, water leakage will occur. To solve the problem of water channeling in the traditional waterproof board, a new type of spray film waterproof material with double-sided adhesion ability has been developed in recent years. This double-sided adhesive waterproof material has adhesion ability with both the primary support concrete layer and the secondary lining concrete layer, and groundwater cannot flow freely between the waterproof layer and the lining layer, greatly reducing the probability of water leakage in the tunnel.

[0003] Existing performance tests on waterproof materials mostly focus on testing their waterproof performance or the water channeling prevention ability of single-sided adhesive waterproof materials, while ignoring the water channeling prevention ability of double-sided adhesive waterproof materials. Moreover, most of the existing testing devices have complex structures and do not consider the influence of actual usage conditions on double-sided adhesive waterproof materials.

[0004] In summary, there is an urgent need to provide a test device for testing the water channeling prevention ability of double-sided adhesive waterproof materials to solve the problems existing in the prior art. Content of the Utility Model

[0005] The purpose of the utility model is to provide a test device for testing the water channeling prevention ability of double-sided adhesive waterproof materials, and the specific technical solution is as follows:

[0006] A test device for testing the water channeling prevention ability of double-sided adhesive waterproof materials includes a test component and a sealing device; the test component includes an annular lining structure, and the sealing device includes a first sealing component and a second sealing component. The first sealing component, the test component, and the second sealing component are sequentially connected to form a sealed cavity.

[0007] The annular lining structure is a composite lining structure, and the annular lining structure sequentially includes a primary support concrete layer, a waterproof layer, and a secondary lining concrete layer from outside to inside; the waterproof layer uses a double-sided adhesive waterproof material; prefabricated cracks are provided on each of the primary support concrete layer, the waterproof layer, and the secondary lining concrete layer, and multiple prefabricated cracks are respectively arranged at different positions in the circumferential direction of the annular lining structure.

[0008] Further, the concrete strength of the primary support concrete layer is C25 grade, and the concrete strength of the secondary lining concrete layer is C35 grade.

[0009] Furthermore, a first precast crack is provided through the initial support concrete layer, a second precast crack is provided through the waterproof layer, and a third precast crack is provided through the secondary lining concrete layer; the lengths of the first precast crack, the second precast crack, and the third precast crack are less than the axial width of the annular lining structure.

[0010] Furthermore, the thickness of the initial support concrete layer is 5 cm - 10 cm, the thickness of the secondary lining concrete layer is 10 cm - 15 cm, and the thickness of the waterproof layer is 2 mm - 3 mm.

[0011] Furthermore, the inner diameter of the annular lining structure is 1.2 m - 1.3 m, the outer diameter is 1.4 m - 1.5 m, and the axial width is 0.5 m.

[0012] Furthermore, the first sealing assembly includes a first steel plate, and a first steel groove is provided on the surface of the first steel plate in contact with the annular lining structure, and the size of the first steel groove matches the thickness of the annular lining structure.

[0013] Furthermore, the second sealing assembly includes a second steel plate, and a second steel groove is provided on the surface of the second steel plate in contact with the annular lining structure, and the size of the second steel groove matches the thickness of the annular lining structure.

[0014] Furthermore, exhaust holes and water injection pipes are provided on the second steel plate.

[0015] Furthermore, a connection structure is provided between the first steel plate and the second steel plate, and the connection structure includes a threaded card slot respectively provided at the central positions of the first steel plate and the second steel plate and a threaded connecting rod connected between the two threaded card slots.

[0016] Furthermore, waterproof sealant is provided between the first sealing assembly and the annular lining structure and between the second sealing assembly and the annular lining structure.

[0017] Applying the technical solution of the present utility model has the following beneficial effects:

[0018] The utility model provides a test device for testing the water-blocking ability of a double-adhesive waterproof material, which comprises a test component and a sealing device; the test component comprises an annular lining structure, the sealing device comprises a first sealing component and a second sealing component, and the first sealing component, the test component and the second sealing component are sequentially connected to form a sealed cavity; the annular lining structure is a composite lining structure, and the annular lining structure sequentially comprises a primary support concrete layer, a waterproof layer and a secondary lining concrete layer from outside to inside; the waterproof layer adopts a double-adhesive waterproof material; prefabricated cracks are provided on the primary support concrete layer, the waterproof layer and the secondary lining concrete layer, and a plurality of prefabricated cracks are arranged at different positions in the circumferential direction of the annular lining structure. By injecting water into the sealed cavity and maintaining the pressure, observing whether water seeps through the prefabricated cracks of the primary support concrete layer, the water-blocking performance test of the double-adhesive waterproof material is realized. The test device provided by the utility model has a simple structure, is convenient to operate, and the test component is a composite lining structure that simulates the actual application of the double-adhesive waterproof material, fully considering the use conditions of the double-adhesive waterproof material, so that the test results are more in line with the actual situation.

[0019] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The following will refer to the drawings to further elaborate on the utility model in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings forming a part of this application are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation to the utility model. In the drawings:

[0021] Figure 1 is a schematic diagram of the overall structure of the test device in the embodiment of the utility model;

[0022] Figure 2 is a schematic diagram of the annular lining structure in the embodiment of the utility model;

[0023] Figure 3 is a schematic diagram of the structure of the sealing device in the embodiment of the utility model;

[0024] Figure 4 is a schematic diagram of the structure of the first sealing component in the embodiment of the utility model;

[0025] Figure 5 is a schematic diagram of the structure of the second sealing component in the embodiment of the utility model;

[0026] Among them, 1. Test component, 1.1 Initial support concrete layer, 1.1.1 Precast crack one, 1.2 Waterproof layer, 1.2.1 Precast crack two, 1.3 Secondary lining concrete layer, 1.3.1 Precast crack three, 2. Sealing device, 2.1 First sealing component, 2.1.1 First steel plate, 2.1.2 First steel groove, 2.2 Second sealing component, 2.2.1 Second steel plate, 2.2.2 Second steel groove, 2.3 Vent hole, 2.4 Water injection pipe, 2.5 Threaded card slot, 2.6 Threaded connecting rod. Specific implementation mode

[0027] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways defined and covered by the claims.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0029] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0030] Embodiment

[0031] See Figure 1 , this embodiment provides a test device for testing the water channeling prevention ability of a double-adhesive waterproof material, including a test component 1 and a sealing device 2; the test component 1 includes an annular lining structure, the sealing device 2 includes a first sealing component 2.1 and a second sealing component 2.2, and the first sealing component 2.1, the test component 1 and the second sealing component 2.2 are sequentially connected to form a sealed cavity;

[0032] See Figure 2, the annular lining structure is a composite lining structure, which sequentially includes a primary support concrete layer 1.1, a waterproof layer 1.2, and a secondary lining concrete layer 1.3 from outside to inside; the waterproof layer 1.2 uses a double-adhesive waterproof material (in this embodiment, a double-adhesive spray film waterproof material is used); prefabricated cracks are provided on the primary support concrete layer 1.1, the waterproof layer 1.2, and the secondary lining concrete layer 1.3. Specifically, a first prefabricated crack 1.1.1 penetrates through the primary support concrete layer 1.1, a second prefabricated crack 1.2.1 penetrates through the waterproof layer 1.2, and a third prefabricated crack 1.3.1 penetrates through the secondary lining concrete layer 1.3. The first prefabricated crack 1.1.1, the second prefabricated crack 1.2.1, and the third prefabricated crack 1.3.1 are respectively arranged at different positions in the circumferential direction of the annular lining structure; the lengths of the first prefabricated crack 1.1.1, the second prefabricated crack 1.2.1, and the third prefabricated crack 1.3.1 are less than the axial width of the annular lining structure. In this embodiment, the inner diameter of the annular lining structure is 1.2 m - 1.3 m, the outer diameter is 1.4 m - 1.5 m, and the axial width is 0.5 m; the length of the second prefabricated crack 1.2.1 is 15 cm, the width is 1 cm, and the lengths of the first prefabricated crack 1.1.1 and the third prefabricated crack 1.3.1 are 15 cm, and the width is 0.1 cm - 1 cm.

[0033] In this embodiment, referring to Figure 2 , the first prefabricated crack 1.1.1 is located at the top of the annular lining structure, two second prefabricated cracks 1.2.1 are provided, respectively located on the left and right side walls, and the third prefabricated crack 1.3.1 is located at the inverted arch.

[0034] To restore the water-blocking ability of the waterproof material in the real tunnel as much as possible and avoid the influence of concrete strength on the bonding strength of the spray film waterproof material, the composite lining structure is cast with concrete of the same strength grade as that on the construction site. In this embodiment, the concrete strength of the primary support concrete layer 1.1 is C25 grade, and the concrete strength of the secondary lining concrete layer 1.3 is C35 grade. In this embodiment, the thickness of the primary support concrete layer 1.1 is 5 cm - 10 cm, the thickness of the secondary lining concrete layer 1.3 is 10 cm - 15 cm, and the thickness of the waterproof layer 1.2 is 2 mm - 3 mm.

[0035] Referring to Figure 3 and Figure 4 , the first sealing component 2.1 includes a first steel plate 2.1.1, and a first steel groove 2.1.2 is provided on the surface of the first steel plate 2.1.1 in contact with the annular lining structure. The size of the first steel groove 2.1.2 matches the thickness of the annular lining structure (i.e., the difference between the outer diameter size and the inner diameter size of the annular lining structure).

[0036] Referring toFigure 3 and Figure 5 , the second sealing assembly 2.2 includes a second steel plate 2.2.1, and a second steel groove 2.2.2 is provided on one side of the second steel plate 2.2.1 that contacts the annular lining structure. The size of the second steel groove 2.2.2 matches the thickness of the annular lining structure (i.e., the difference between the outer diameter size and the inner diameter size of the annular lining structure).

[0037] See Figures 3 - 5 , a connecting structure is provided between the first steel plate 2.1.1 and the second steel plate 2.2.1. The connecting structure includes a threaded card slot 2.5 respectively provided at the central positions of the first steel plate 2.1.1 and the second steel plate 2.2.1 and a threaded connecting rod 2.6 connected between the two threaded card slots 2.5.

[0038] In this embodiment, an exhaust hole 2.3 and a water injection pipe 2.4 are further provided on the second steel plate 2.2.1.

[0039] To ensure that water does not leak from the joint between the sealing device and the annular lining structure, waterproof sealant is provided between the first sealing assembly 2.1 and the annular lining structure and between the second sealing assembly 2.2 and the annular lining structure.

[0040] The manufacturing and usage methods of the test device provided in this embodiment are as follows:

[0041] S1. Manufacture the primary support concrete layer 1.1 with the prefabricated crack one 1.1.1 in the composite lining structure: A gap with a certain length and width is opened on the used steel formwork. When pouring the primary support concrete, first insert a steel sheet into the gap, and then pull out the steel sheet when the concrete has completed the initial setting, so as to form the primary support concrete layer 1.1 with the prefabricated crack one 1.1.1; then carry out concrete curing;

[0042] S2. Apply the waterproof layer 1.2 to the primary support concrete layer 1.1 by spraying or brushing. After the waterproof layer 1.2 has completed curing, make the prefabricated crack two 1.2.1 at the predetermined position. During specific operation, a crack with a certain width, length and penetrating the depth of the waterproof layer can be formed by using a blade to cut;

[0043] S3. Manufacture the secondary lining concrete layer 1.3 with the prefabricated crack three 1.3.1 in the composite lining structure. When pouring the concrete, use the primary support concrete layer 1.1 with the waterproof layer 1.2 as the outer formwork, and only the internal steel formwork needs to be arranged. A gap with a certain length and width is provided on the internal steel formwork. When pouring the secondary lining concrete, first insert a steel sheet into the gap, and then pull out the steel sheet when the concrete has completed the initial setting, so as to form the secondary lining concrete layer 1.3 with the prefabricated crack three 1.3.1; then carry out concrete curing;

[0044] S4. Apply waterproof sealant on the first steel groove 2.1.2 on the first steel plate 2.1.1 and one end of the composite lining structure, and then place the composite lining structure into the first steel groove 2.1.2 and wait for the waterproof sealant to completely bond the first steel plate 2.1.1 and the composite lining structure;

[0045] S5. Tighten the threaded connecting rod 2.6 with the threaded card slot 2.5 on the first steel plate 2.1.1;

[0046] S6. Apply waterproof sealant on the second steel groove 2.2.2 on the second steel plate 2.2.1 and the other end of the composite lining structure, then closely fit the second steel plate 2.2.1 with the other end of the composite lining structure and tighten it with the threaded connecting rod 2.6 through the threaded card slot 2.5; wait for the waterproof sealant to completely bond the second steel plate 2.2.1 and the composite lining structure; the first steel plate 2.1.1, the composite lining structure and the second steel plate 2.2.1 form a cavity;

[0047] S7. Install a water injection pipe 2.4 and an exhaust pipe on the second steel plate 2.2.1, inject water into the cavity through the water injection pipe 2.4, and tighten the exhaust hole 2.3 after the exhaust pipe discharges water;

[0048] S8. Connect the water pressure pump with the water injection pipe 2.4, gradually apply water pressure and stabilize the pressure for a fixed time, with each stage of pressure increase being 0.1 MPa and the pressure being stabilized for 8 hours. Observe the leakage situation at the prefabricated crack 1.1.1 on the primary support concrete layer 1.1 and record the water seepage pressure, and use the water pressure of the previous stage of loading as the anti-channeling strength of the double-adhesive waterproof material.

[0049] The test device provided by the present utility model has a simple structure and is convenient to operate. Moreover, the test component is a composite lining structure that simulates the actual application of the double-adhesive waterproof material, fully considering the usage conditions of the double-adhesive waterproof material, making the test results more in line with the actual situation.

[0050] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A test device for testing the water-proof ability of double-adhesive waterproof materials, characterized in that: The invention comprises a test component (1) and a sealing device (2); the test component (1) comprises an annular lining structure, the sealing device (2) comprises a first sealing component (2.1) and a second sealing component (2.2), and the first sealing component (2.1), the test component (1) and the second sealing component (2.2) are sequentially connected to form a sealing cavity; The annular lining structure is a composite lining structure, and comprises, from the outside to the inside, an initial support concrete layer (1.1), a waterproof layer (1.2) and a secondary lining concrete layer (1.3); the waterproof layer (1.2) adopts a double-adhesive waterproof material; the initial support concrete layer (1.1), the waterproof layer (1.2) and the secondary lining concrete layer (1.3) are all provided with prefabricated cracks, and a plurality of the prefabricated cracks are respectively arranged at different positions on the circumference of the annular lining structure.

2. The test device for testing the water-proof ability of double-adhesive waterproof materials according to claim 1 is characterized in that: The concrete strength of the initial support concrete layer (1.1) is of grade C25, and the concrete strength of the secondary lining concrete layer (1.3) is of grade C35.

3. The test device for testing the water-proof ability of double-adhesive waterproof materials according to claim 1 is characterized in that: The initial support concrete layer (1.1) is provided with a prefabricated crack one (1.1.1), the waterproof layer (1.2) is provided with a prefabricated crack two (1.2.1), and the secondary lining concrete layer (1.3) is provided with a prefabricated crack three (1.3.1); the lengths of the prefabricated crack one (1.1.1), the prefabricated crack two (1.2.1) and the prefabricated crack three (1.3.1) are less than the axial width of the annular lining structure.

4. The test device for testing the water-proof ability of double-adhesive waterproof materials according to claim 1 is characterized in that: The thickness of the initial support concrete layer (1.1) is 5cm-10cm, the thickness of the secondary lining concrete layer (1.3) is 10cm-15cm, and the thickness of the waterproof layer (1.2) is 2mm-3mm.

5. The test device for testing the water-proof ability of double-adhesive waterproof materials according to claim 1 is characterized in that: The inner diameter of the annular lining structure is 1.2m-1.3m, the outer diameter is 1.4m-1.5m, and the axial width is 0.5m.

6. The test device for testing the water-proof ability of double-adhesive waterproof materials according to claim 1 is characterized in that: The first sealing assembly (2.1) comprises a first steel plate (2.1.1), a first steel groove (2.1.2) being provided on a side of the first steel plate (2.1.1) in contact with the annular lining structure, and a size of the first steel groove (2.1.2) matching the thickness of the annular lining structure.

7. The test device for testing the water-proof ability of double-adhesive waterproof materials according to claim 6, characterized in that: The second sealing assembly (2.2) comprises a second steel plate (2.2.1), a second steel groove (2.2.2) being provided on a side of the second steel plate (2.2.1) in contact with the annular lining structure, and a size of the second steel groove (2.2.2) matching the thickness of the annular lining structure.

8. The test device for testing the water-proof ability of double-adhesive waterproof materials according to claim 7, characterized in that: The second steel plate (2.2.1) is provided with an exhaust hole (2.3) and a water injection pipe (2.4).

9. The test device for testing the water-proof ability of double-adhesive waterproof materials according to claim 7, characterized in that: A connection structure is provided between the first steel plate (2.1.1) and the second steel plate (2.2.1), the connection structure comprising threaded slots (2.5) respectively provided at the center of the first steel plate (2.1.1) and the second steel plate (2.2.1) and a threaded connecting rod (2.6) connected between the two threaded slots (2.5).

10. The test device for testing the water-proof ability of double-adhesive waterproof materials according to any one of claims 1 to 9, characterized in that: Waterproof sealant is provided between the first sealing component (2.1) and the annular lining structure, and between the second sealing component (2.2) and the annular lining structure.

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