CN112798401A - Waterproof performance simulation test device and method for paste water-stopping material - Google Patents
Waterproof performance simulation test device and method for paste water-stopping material Download PDFInfo
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- CN112798401A CN112798401A CN202110142313.0A CN202110142313A CN112798401A CN 112798401 A CN112798401 A CN 112798401A CN 202110142313 A CN202110142313 A CN 202110142313A CN 112798401 A CN112798401 A CN 112798401A
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- 238000012360 testing method Methods 0.000 title claims abstract description 74
- 239000000463 material Substances 0.000 title claims abstract description 51
- 238000004088 simulation Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 118
- 238000002347 injection Methods 0.000 claims abstract description 35
- 239000007924 injection Substances 0.000 claims abstract description 35
- 238000012544 monitoring process Methods 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 4
- 238000010998 test method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 235000011837 pasties Nutrition 0.000 abstract description 5
- 238000011156 evaluation Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 3
- 239000006071 cream Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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Abstract
The invention discloses a waterproof performance simulation test device and method for a paste water stopping material, and aims to solve the problem that effective technical means are not available for pre-evaluation of the application effect of an underground engineering waterproof structure and a novel waterproof material at present. The device comprises a left fixing test block and a right fixing test block which are fixed on a corresponding base or a corresponding floor, wherein a deformation joint for filling the paste water stopping material is formed between the left fixing test block and the right fixing test block; a water injection cavity is arranged in the right fixing test block, a corresponding cavity is arranged in the left fixing test block, and the water injection cavity and the cavity are opened towards the deformation joint and correspond to each other; and a water injection pipe for communicating the water injection cavity with an external water source and a pressure gauge or a pressure sensor for monitoring the water pressure in the water injection cavity are arranged on the right fixing test block. According to the invention, the hydraulic bearing capacity test is carried out by giving different hydraulic pressure variables to the deformation joint pasty water stopping material, so that the waterproof bearing effect of the deformation joint pasty water stopping material is detected, and the limit parameter of the hydraulic bearing capacity of the deformation joint pasty water stopping material in a state that the deformation joint keeps normal water stopping can be accurately obtained.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a waterproof performance simulation test device and method for a paste water-stopping material.
Background
In the urbanization process of the continuous accelerated development of China, the building engineering gradually develops to the underground field. The most common quality problem of underground construction is leakage, so waterproofing plays a key role in underground works. The detail waterproof belongs to the key point in underground waterproof engineering, and the deformation joint is used as a waterproof weak link of an underground detail structure, so that once water seepage occurs, on one hand, the deterioration of the space environment of an underground building is accelerated, the normal use of the underground building engineering is influenced, and certain difficulty is brought to seepage prevention maintenance; on the other hand, the safety and the durability of the concrete structure are seriously threatened, and certain economic loss is caused. Based on subjective and objective reasons, the water leakage phenomenon of the underground deformation joint generally exists.
At present, the evaluation of the application effect of underground engineering waterproof structures and novel waterproof materials at home and abroad is basically derived from engineering application and construction experience, and the waterproof effect of the novel waterproof structures and materials cannot be evaluated and estimated in advance. The waterproof performance of the pasty water-stopping material for the deformation joint of the underground building engineering can be objectively reflected under different experimental conditions and different variable factors, and whether the waterproof structure of the pasty water-stopping material is feasible or not can be evaluated in advance, so that the development of the solid model test is a practical method at the present stage.
Disclosure of Invention
The invention provides a waterproof performance simulation test device and method for a paste water stopping material, and aims to solve the problem that effective technical means are not available for pre-evaluation of the application effect of an underground engineering waterproof structure and a novel waterproof material at present.
In order to solve the technical problems, the invention adopts the following technical scheme:
designing a waterproof performance simulation test device for a paste water stopping material, which comprises a left fixing test block and a right fixing test block which are fixed on a corresponding base or a corresponding floor, wherein a deformation joint for filling the paste water stopping material is formed between the left fixing test block and the right fixing test block; a water injection cavity is arranged in the right fixing test block, a corresponding cavity is arranged in the left fixing test block, and the water injection cavity and the cavity face the deformation joint and are opened correspondingly; and the right fixed test block is provided with a water injection pipe for communicating the water injection cavity with an external water source, and a pressure gauge or a pressure sensor for monitoring the water pressure in the water injection cavity.
The water injection cavity penetrates through an opening of an outer vertical surface of the right fixed test block, which corresponds to one side of the deformation joint, so as to form an operation opening, the operation opening is used for applying a paste water stop material to the deformation joint, and a corresponding movable sealing cover is arranged at the operation opening.
The width of movement joint is 45 ~ 55mm, and communicates the external world.
The left fixed test block and the right fixed test block are formed by pouring concrete more than or equal to C35.
The waterproof performance simulation test method for the paste water stopping material is implemented by using the waterproof performance simulation test device, and comprises the following steps of:
(1) the left and right fixed test blocks are installed and fixed on the corresponding bases or terraces, and deformation joints with certain width are formed between the left and right fixed test blocks;
(2) applying a paste water-stopping material into the deformation joint;
(3) filling water into the water injection cavity in the right fixed test block through the water injection pipe, and observing a water pressure value reaching a full water state;
(4) continuously injecting a certain amount of water, and observing and recording a corresponding water pressure value;
(5) if the water pressure value is not obviously changed, the water injection amount is gradually increased until the water pressure value is obviously changed, which indicates that the paste water stopping material leaks, and the leaked water pressure value is the limit parameter of the water pressure bearing capacity of the paste water stopping material in the normal water stopping state of the deformation joint.
Compared with the prior art, the invention has the main beneficial technical effects that:
1. the test simulation device has the advantages of exquisite structure and low manufacturing cost, and can be suitable for the test determination of the limit value of the hydraulic pressure bearing capacity of the paste water stopping material used at deformation joints of various building roofs, wall surfaces, ground surfaces, basements and other underground engineering.
2. The simulation test device and the method of the invention provide different water pressure variables for the water stopping material of the cream body of the deformation joint so as to simulate and detect the pressure bearing effect of the water stopping material of the cream body of the deformation joint, and can accurately obtain the limit parameters of the water pressure bearing capacity of the water stopping material of the cream body of the deformation joint in the normal water stopping state of the deformation joint.
3. The simulation test device and the method can effectively simulate and detect the binding force between the paste water stopping material and the main structure, thereby observing and determining the maximum pressure-bearing value which can be satisfied by the underground building deformation joint waterproof structure for the paste water stopping material.
Drawings
FIG. 1 is a schematic view of a vertical section structure of a waterproof performance simulation test device according to the present invention;
FIG. 2 is a schematic diagram of a horizontal section structure of the waterproof performance simulation test device according to the present invention;
FIG. 3 is a schematic structural view of a vertical section (right opening) of the right fixed test piece according to the present invention;
FIG. 4 is a schematic diagram of a horizontal cross-sectional structure of the left fixed test piece according to the present invention.
In the above figures, 1 is a paste water stop material, 2 is a right fixing test block, 3 is a left fixing test block, 4 is a water pressure gauge, 5 and 7 are side wings, 6 is a hardened ground, 8 is a water injection cavity, 9 is a cavity, and 10 is a water injection pipe.
Detailed Description
The following examples are intended to illustrate the present invention in detail and should not be construed as limiting the scope of the present invention in any way.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention; similarly, references to "first," "second," etc. are intended to distinguish similar items and not necessarily to describe a particular order or sequence.
The tool apparatuses referred to in the following examples are conventional tool apparatuses unless otherwise specified; the materials involved are all conventional materials on the market unless otherwise specified; the test method steps involved are conventional methods unless otherwise specified.
Example 1: a waterproof performance simulation test device for a paste water stopping material is disclosed, and referring to fig. 1 to 4, comprises a right fixed test block 2, a left fixed test block 3, a water pressure gauge 4 and a paste water stopping material 1; the left and right fixing test blocks 2 and 3 are both concrete main body structures and are integrally cast with the side wings 5 and 7 corresponding to the thickness of 200mm, and the side wings of the three surfaces are fixed with the hardened ground 6 through bolts. The inside of the left and right fixed test blocks 3 and 2 are correspondingly provided with a cavity 9 and a water injection cavity 8 with 200mm, the outer side of the left fixed test block 3 is not opened, the outer side of the right fixed test block 2 is opened, and after water stopping materials are applied from the water injection cavity 8 of the right fixed test block 2, the water stopping materials are sealed by a movable cover plate. In addition, a 50mm wide deformation joint which penetrates through the cavity and is communicated with the outside is formed between the left fixing test block 2 and the right fixing test block 3, and the paste water stopping material 1 is filled in the deformation joint. The water pressure gauge 4 is directly embedded in the right fixed test block 2, and a water injection hole and a water injection pipe 10 are arranged in advance. The water pressure gauge 4 and the water injection pipe 10 are communicated to the water injection cavity 8. The waterproof performance of the paste water stopping material 1 is observed by injecting water into the inner water injection cavity 8 through the water injection pipe 10.
Example 2: the waterproof performance simulation test device for the paste water stopping material is implemented by using the waterproof performance simulation test device in embodiment 1, and comprises the following steps of:
(1) arranging the left and right fixed test blocks 2 and 3 on a hardened ground 6, keeping a 50mm distance, and fixing the three- side flanks 5 and 7 corresponding to the left and right fixed test blocks 2 and 3 with the hardened ground 6 by using bolts;
(2) the movable cover plate on the right side of the right fixed test block 2 extends into the deformation joint to be used as the paste water stopping material 1;
(3) fixing the sealing cover on the right side of the right fixed test block 2 by using bolts, and sealing all seams;
(4) filling water into the water injection cavity 8 from a water injection pipe 10 at the top of the right fixed test block 2, observing the water meter value reaching the full water state, and recording the value of the water pressure meter 4;
(5) continuously injecting a certain amount of water, observing and recording whether the numerical value of the water pressure gauge 4 has obvious change or not;
if the value of the water pressure gauge 4 is not obviously changed, a certain amount of water is gradually injected until the value of the water pressure gauge 4 is obviously changed, which indicates that the paste water stopping material 1 leaks.
While the invention has been described in detail with reference to the drawings and examples, it will be understood by those skilled in the art that various changes in the details of the embodiments may be made without departing from the spirit of the invention, and various changes in the details of construction and materials may be substituted for elements thereof to form various embodiments, which are within the scope of the invention and are not intended to be limited to the details of the embodiments.
Claims (5)
1. A waterproof performance simulation test device for a paste water stop material is characterized by comprising a left fixing test block and a right fixing test block which are fixed on a corresponding base or a corresponding floor, wherein a deformation joint for filling the paste water stop material is formed between the left fixing test block and the right fixing test block; a water injection cavity is arranged in the right fixing test block, a corresponding cavity is arranged in the left fixing test block, and the water injection cavity and the cavity face the deformation joint and are opened correspondingly; and the right fixed test block is provided with a water injection pipe for communicating the water injection cavity with an external water source, and a pressure gauge or a pressure sensor for monitoring the water pressure in the water injection cavity.
2. The simulation test device for the waterproof performance of the paste water stopping material as claimed in claim 1, wherein the water injection cavity penetrates through an outer vertical surface opening of the right fixed test block corresponding to one side of the deformation joint to form an operation port for applying the paste water stopping material to the deformation joint, and a corresponding movable sealing cover is arranged at the operation port.
3. The waterproof performance simulation test device for the paste water stopping material as claimed in claim 1, wherein the deformation joint is communicated with the outside and has a width of 45-55 mm.
4. The waterproof performance simulation test device for the paste water stopping material as claimed in claim 1, wherein the left and right fixing test blocks are cast with concrete of not less than C35.
5. A waterproof performance simulation test method for a paste water stopping material, which is implemented by using the waterproof performance simulation test device of claim 1, comprising the steps of:
(1) the left and right fixed test blocks are installed and fixed on the corresponding bases or terraces, and deformation joints with certain width are formed between the left and right fixed test blocks;
(2) applying a paste water-stopping material into the deformation joint;
(3) filling water into the water injection cavity in the right fixed test block through the water injection pipe, and observing a water pressure value reaching a full water state;
(4) continuously injecting a certain amount of water, and observing and recording a corresponding water pressure value;
(5) if the water pressure value is not obviously changed, the water injection amount is gradually increased until the water pressure value is obviously changed, which indicates that the paste water stopping material leaks, and the leaked water pressure value is the limit parameter of the water pressure bearing capacity of the paste water stopping material in the normal water stopping state of the deformation joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110142313.0A CN112798401A (en) | 2021-02-02 | 2021-02-02 | Waterproof performance simulation test device and method for paste water-stopping material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110142313.0A CN112798401A (en) | 2021-02-02 | 2021-02-02 | Waterproof performance simulation test device and method for paste water-stopping material |
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| Publication Number | Publication Date |
|---|---|
| CN112798401A true CN112798401A (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110142313.0A Pending CN112798401A (en) | 2021-02-02 | 2021-02-02 | Waterproof performance simulation test device and method for paste water-stopping material |
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| Country | Link |
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| CN (1) | CN112798401A (en) |
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2021
- 2021-02-02 CN CN202110142313.0A patent/CN112798401A/en active Pending
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