CN114813503A - Concrete impermeability test device and method - Google Patents
Concrete impermeability test device and method Download PDFInfo
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- CN114813503A CN114813503A CN202210339758.2A CN202210339758A CN114813503A CN 114813503 A CN114813503 A CN 114813503A CN 202210339758 A CN202210339758 A CN 202210339758A CN 114813503 A CN114813503 A CN 114813503A
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- 238000012360 testing method Methods 0.000 title claims abstract description 162
- 238000000034 method Methods 0.000 title abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 95
- 230000008595 infiltration Effects 0.000 claims abstract description 15
- 238000001764 infiltration Methods 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- 238000010998 test method Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000006872 improvement Effects 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000003566 sealing material Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000007655 standard test method 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
- 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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Abstract
The invention belongs to the technical field of impermeability tests, and particularly relates to a concrete impermeability test device and a method, wherein the concrete impermeability test device comprises a device main body, a workbench and a columnar test mold, the test mold comprises a fixed mold integrally connected with the workbench and a movable mold sliding on the workbench, and an infrared camera for acquiring an infrared image of a concrete test piece in the test mold is arranged above the test mold; the bottom of examination mould is equipped with the infiltration platform that the infiltration groove was seted up to the upper surface, and the centre of infiltration groove is through delivery port connection inlet tube and valve, and delivery port axis center is equipped with subassembly one, forms the passageway between delivery port and the valve, and one side of passageway is equipped with subassembly two, and subassembly two utilizes the movable mould to be close to the gas tightness that detects infiltration platform and examination mould to the fixed mould. The test device does not need to use hydraulic equipment to compress the test piece and the test die, does not need to work by screwing a large number of screws, and can be used by directly putting the test piece into a water seepage table and fixing the fixed die and the movable die.
Description
Technical Field
The invention belongs to the technical field of impermeability tests, and particularly relates to a concrete impermeability test device and method.
Background
The impermeability of concrete is the basic property of concrete and is an important characteristic of the durability of concrete. The impermeability of concrete not only represents the ability of concrete to resist water flow, but also influences the properties of concrete such as carbonization resistance and chloride ion penetration resistance. The impermeability grade is determined by the maximum water pressure which can be borne by a standard test piece with the age of 28d when the test is carried out according to a standard test method.
GB50164-2011 concrete quality control Standard has clear rules on how to perform concrete impermeability tests: maintaining the test piece one day before the test, taking out the test piece, airing the surface of the test piece, coating a layer of molten sealing material on the side surface of the test piece, pressing the test piece into a test piece sleeve preheated by an oven on a pressurizing device, slightly cooling the test piece sleeve, and relieving the pressure; the sample and the sample are sleeved on an anti-permeability instrument for testing; starting from the water pressure of 0.1MPa, increasing the water pressure of 0.1MPa every 8 hours later, and observing the water seepage condition of the end face of the test piece at any time; when 3 test piece end surfaces among the 6 test pieces are subjected to water seepage, stopping the test, and recording the water pressure at that time; during the test, if water is found to seep out from the periphery of the test piece, the test is stopped and resealing is carried out. According to the maximum water pressure which can be borne by the concrete test piece in the impermeability test, the impermeability grades of the concrete are divided into five grades of P4, P6, P8, P10, P12 and the like, and correspondingly, the maximum water pressure which is different when water seepage does not occur in 4 test pieces in a group of 6 test pieces in the impermeability test of the concrete is shown.
When the traditional concrete is put into an impermeability test device (as shown in figure 7) for detection, multiple operations need to be carried out, for example, sealing materials are smeared on the side surface of a test piece, the test piece is installed in a mold through hydraulic equipment, and the like. Therefore, a concrete impermeability test device and a method are provided.
Disclosure of Invention
In order to solve the above problems, the primary object of the present invention is to provide a concrete impermeability test apparatus and method.
The above object is achieved by the following preparation process:
the invention provides a concrete impermeability test device, which comprises a device main body, a workbench and a columnar test mold, wherein the test mold comprises a fixed mold integrally connected with the workbench and a movable mold sliding on the workbench, and an infrared camera for acquiring an infrared image of a concrete test piece in the test mold is arranged above the test mold;
the device is characterized in that a water seepage table with a water seepage groove formed in the upper surface is arranged at the bottom end of the test mold, the middle of the water seepage groove is connected with a water inlet pipe and a valve through a water outlet, a first component for blocking the water outlet is arranged in the center of the axis of the water outlet, a channel is formed between the water outlet and the valve, a second component for detecting air tightness is arranged on one side of the channel, and the second component utilizes a movable mold to move towards the fixed mold to be close to the air tightness of the water seepage table and the test mold before the detection test begins.
As a further improvement of the above technical solution: the movable mould further comprises a telescopic device and a telescopic piece driven by the telescopic device, and one end of the telescopic piece is located on the outer wall of the movable mould.
As a further improvement of the above technical solution: the upper surface of workstation is equipped with the activity groove with movable mould assorted, activity groove upper end is equipped with and is used for controlling spacing at least two sets of spouts to the movable mould.
As a further improvement of the above technical solution: and the second component comprises a sealing barrel positioned at the lower end of the movable die, a piston rod positioned at the front end of the sealing barrel, and an air inlet positioned at the lower end of the water seepage platform and communicated with the channel, wherein one end of the piston rod is connected with the inner wall of the sealing barrel through a first spring, and the other end of the piston rod is positioned in the air inlet.
As a further improvement of the above technical solution: and an observation port with scales is arranged on the upper surface of the sealing cylinder, which is positioned on the outer side of the movable die.
As a further improvement of the above technical solution: the first component comprises a central piece positioned in the axis center of the water outlet, an elastic plug connected with the lower end of the central piece through a second spring and used for blocking the channel, and a water outlet net positioned at the lower end of the central piece and used for communicating the channel with the water outlet.
As a further improvement of the above technical solution: the opposite face of fixed mould and movable mould all is fixed to be equipped with the silica gel layer, the both open ends of movable mould all are equipped with the lug, the both open ends of fixed mould be equipped with lug assorted recess.
As a further improvement of the above technical solution: the extension plates are arranged on the outer walls of two opening ends of the fixed die and the movable die, the extension plates of the fixed die are provided with convex columns facing the movable die, the extension plates of the movable die are provided with convex cylinders which are back to the fixed die and matched with the convex columns, and third springs which are abutted to the convex columns are arranged in the convex cylinders.
As a further improvement of the above technical solution: be equipped with on the outer wall of fixed mould and rotate seat and dwang, infrared camera is located the dwang.
The invention also provides a concrete impermeability test method, the device main body also comprises a main control module and a data transmission module, and the test method comprises the following steps:
(1) placing a columnar test piece on a water seepage table, attaching the inner wall of the columnar test piece to a fixed mold, moving a movable mold towards the test piece and the fixed mold until the movable mold is fixed, and moving an infrared camera to a position right above the test piece after detecting the air tightness;
(2) opening a valve, increasing the water pressure by 0.1MPa every 8 hours from the water pressure of 0.1MPa, injecting water into a water seepage tank, regularly acquiring an infrared image of a test piece by using an infrared camera during water injection, transmitting the infrared image to a main control module for digital conversion, and transmitting the infrared image to a computer through a data transmission module;
(3) carrying out contrastive analysis on the digitized infrared image through a contrastive analysis detection system on a computer to obtain real-time test piece water seepage data, wherein the contrastive analysis is to calculate the test piece water seepage situation according to the speed of temperature change in a temperature cloud chart of the infrared image by using an image recognition algorithm, when the real-time test piece water seepage data exceeds a set value of the computer, the computer judges that the test piece has water seepage, when 3 test pieces in 6 test pieces have water seepage, the test is stopped, the computer sends an instruction to a main control module to control the valve to be closed, the computer records the water pressure H at that time, and the concrete impermeability label S is calculated according to the following formula:
S＝10H－1
wherein the unit of H is MPa.
The invention has the beneficial effects that:
(1) compared with the traditional test piece die filling, the method is simpler and more convenient, after the traditional time curing molding, firstly a layer of sealing material is coated on the side wall, then the test piece and the test die are put into the test die, then the test piece and the test die are compressed through hydraulic equipment, the test piece and the test die are integrally aligned to at least six groups of studs on a workbench of a test device and then put above a water seepage table, and then screws are respectively screwed.
(2) Compared with the traditional test piece die filling which needs to be coated with sealing materials, the silica gel layer is arranged on the inner wall of the test die, so that the influence of the water seepage of the test piece on the surface of the test die can be prevented, an excellent sealing effect is achieved on the movable die, the fixed die and the water seepage table integrally, and the test piece can be conveniently demoulded from the test die.
(3) In the invention, in the process of fixing the test piece on the test mold, the movable mold needs to be pushed towards the fixed mold, under the condition that the valve is closed, the second component gradually approaches the channel, due to the blocking of the upper test piece, if the air tightness is good, the first component is lifted, and if the air tightness is not good, the pushing force is large and small in the pushing process, when the movable mold and the fixed mold are completely fixed, if the air tightness is still excellent, the second component does not generate displacement, if the air tightness is not good, the second component generates displacement, and when the test is not carried out, the tightness detection can be accurately carried out, so that the outward water seepage in the test process is avoided, and the test piece and the test process need to be prepared again.
Drawings
FIG. 1 is a front view of a concrete impermeability test apparatus according to the present invention;
FIG. 2 is a plan view of the concrete impermeability test device of the present invention;
FIG. 3 is a schematic view of a test mold and a bottom structure thereof of the concrete impermeability test device of the present invention;
FIG. 4 is an enlarged view of the apparatus for testing impermeability of concrete according to the present invention at A of FIG. 3;
FIG. 5 is a schematic top view showing the development of a fixed mold and a movable mold of the apparatus for testing impermeability of concrete according to the present invention;
FIG. 6 is a schematic top view of a fixed mold and a movable mold assembly of the concrete impermeability test apparatus according to the present invention;
fig. 7 is a conventional concrete impermeability test device.
The figure is as follows: 1. a device main body; 2. a work table; 3. testing the mold; 4. a fixed mold; 5. moving a mold; 6. an infrared camera; 7. a water seepage station; 8. a water seepage tank; 9. a water outlet; 10. a water inlet pipe; 11. a valve; 12. a silica gel layer; 13. a telescoping device; 14. a telescoping member; 15. a channel; 16. a movable groove; 17. a chute; 18. a sealing cylinder; 19. a piston rod; 20. a first spring; 21. an air inlet; 22. an elastic plug; 23. a second spring; 24. a center piece; 25. a water outlet net; 26. a viewing port; 27. a bump; 28. a groove; 29. extending the plate; 30. a convex column; 31. a convex cylinder; 32. a third spring; 33. a rotating seat; 34. rotating the rod.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
As shown in fig. 1-3, the concrete impermeability test device of this embodiment includes a device main body 1, a workbench 2 and a columnar test mold 3, the test mold 3 includes a fixed mold 4 integrally connected with the workbench 2 and a movable mold 5 sliding on the workbench 2, the upper surface of the workbench 2 is provided with a movable groove 16 matching with the movable mold 5, the upper end of the movable groove 16 is provided with at least two sets of sliding grooves 17 for limiting the movable mold 5 to the left and right, one end of a telescopic member 14 is located on the outer wall of the movable mold 5, the bottom end of the test mold 3 is provided with a water seepage table 7 with a water seepage groove 8 on the upper surface, the middle of the water seepage groove 8 is connected with a water inlet pipe 10 and a valve 11 through a water outlet 9, the concrete impermeability test device further includes a telescopic member 14 driven by the telescopic member 13, the movable mold 5 realizes extrusion with the fixed mold 4 through the telescopic member 14, the fixed mold 4 is extruded and fixed, wherein the telescopic member 13 is driven by hydraulic pressure and the like, in other embodiments, the movable mold 5 and the fixed mold 4 may be fixed by a snap or a clamp.
As shown in fig. 4-6, the opposite surfaces of the fixed mold 4 and the movable mold 5 are both fixedly provided with a silica gel layer 12, the two open ends of the movable mold 5 are both provided with a bump 27, the two open ends of the fixed mold 4 are provided with a groove 28 matched with the bump 27, when the movable mold 5 and the fixed mold 4 are pressed and fastened, the bump 27 is clamped in the groove 28, under the action of the silica gel layer 12, the movable mold 5 and the fixed mold 4 are tightly attached, the bottom end of the movable mold 5 is attached to the outer wall of the water seepage table 7, so that an excellent sealing effect can be achieved, the influence of the water seepage of the test piece on the surface of the test mold 3 can be prevented, and the test piece can be conveniently demoulded from the test mold when the test is finished; the outer walls of two open ends of the fixed mold 4 and the movable mold 5 are respectively provided with an extension plate 29, the extension plate 29 of the fixed mold 4 is provided with a convex column 30 facing the movable mold 5, the extension plate 29 of the movable mold 5 is provided with a convex column 31 which is back to the fixed mold 4 and matched with the convex column 30, the inner part of the convex column 31 is provided with a third spring 32 which is abutted against the convex column 30, when the movable mold 5 and the fixed mold 4 are pressed and fastened, the convex column 30 of the fixed mold 4 enters the inner part of the convex column 31 of the movable mold 5 to slowly extrude the third spring 32, so that the fixed mold 4 and the movable mold 5 are conveniently positioned, the connecting stability of the fixed mold 4 and the movable mold 5 is improved, meanwhile, when in demolding, when the expansion device 13 is used for removing extrusion force, the movable mold 5 automatically pops away from the fixed mold 4 due to the elasticity of the third spring 32, the demolding is convenient, the test piece and the test mold are not required to be taken down again, and the hydraulic device is used for demolding again.
After the test piece passes through the maintenance, directly put the test piece into infiltration platform 7 on, test piece and infiltration groove 8 are located same axis, then make expansion piece 14 promote movable mould 5 to be close to fixed mould 4 gradually through starting telescoping device 13, until completely fixed, detect sealed back, open valve 11, water in the device main part 1 water tank oozes from delivery port 9 through inlet tube 10 after the pressurization, on the infiltration groove 8 of infiltration platform 7 upper end permeates, begin to carry out infiltration test to the test piece.
As shown in fig. 4, a channel 15 is formed between the water outlet 9 and the valve 11, a first component for blocking the water outlet 9 is arranged at the axial center of the water outlet 9, the first component comprises a central part 24 positioned at the axial center of the water outlet 9, an elastic plug 22 connected with the lower end of the central part 24 through a second spring 23 and used for blocking the channel 15, and a water outlet net 25 positioned at the lower end of the central part 24 and used for communicating the channel 15 with the water outlet 9, when the valve 11 opens the channel 15 and water enters, the elastic plug 22 is jacked up to the central part 24 by water pressure, water enters the water outlet 9 from the water outlet net 25, and when the valve 11 is closed, the elastic plug 22 falls down to block the channel 15; one side of the channel 15 is provided with a second component for detecting air tightness, the second component comprises a sealing cylinder 18 positioned at the lower end of the movable die 5, a piston rod 19 positioned at the front end of the sealing cylinder 18, and an air inlet 21 positioned at the lower end of the water seepage table 7 and communicated with the channel 15, one end of the piston rod 19 is connected with the inner wall of the sealing cylinder 18 through a first spring 20, the other end of the piston rod is positioned in the air inlet 21, the upper surface of the sealing cylinder 18 positioned at the outer side of the movable die 5 is provided with an observation port 26 with scales, after a test piece is placed on the water seepage table 7, a similar sealing space is formed, the movable die 5 is moved, the movable die 5 drives the piston rod 19 at the bottom end of the sealing cylinder 18 to move towards the air inlet 21, the channel 15 is positioned above the valve 11, at the moment, the valve 11 is not opened, the piston rod 19 extrudes gas in the channel 15 and the air inlet 21, so that the elastic plug 22 above the channel 15 is jacked, and when the piston rod 19 moves to the rightmost end of the air inlet 21, the movable mould 5 just fixes with fixed mould 4, stay a period a little after fixed, if it is not good to try 3 whole sealed effects of mould, infiltration groove 8, the internal gas pressure of delivery port 9 resumes gradually, elastic component 22 can move down gradually for piston rod 19 moves back, can see first spring 20 from viewing aperture 26 and change, with this inspection of carrying out the gas tightness, just can be accurate when not experimenting carry out the leakproofness and detect, outwards infiltration appears in avoiding the testing process.
The top of examination mould 3 is equipped with the infrared camera 6 that is used for gathering the infrared image of concrete test piece in the examination mould 3, is equipped with on the outer wall of fixed mould 4 and rotates seat 33 and dwang 34, and infrared camera 6 is located dwang 34, rotates one side with it when the installation test piece, installs the back, rotates infrared camera 6 to directly over the test piece, is convenient for gather the infrared image data of test piece.
In the concrete impermeability test method of the embodiment, the concrete impermeability test device is utilized, the device main body 1 further comprises a main control module and a data transmission module, and the test method comprises the following steps:
(1) placing a columnar test piece on a water seepage table 7, attaching the inner wall of the columnar test piece to a fixed mold 4, moving a movable mold 5 to the test piece and the fixed mold 4 until the test piece and the fixed mold are fixed, and moving an infrared camera 6 to a position right above the test piece after detecting the air tightness;
(2) the computer sends an instruction to the main control module to control the opening of the valve 11, the water pressure is increased by 0.1MPa every 8 hours from the water pressure of 0.1MPa, water is injected into the water seepage tank 8, the infrared camera 6 is used for collecting the infrared image of the test piece at regular time during water injection, the infrared image is transmitted to the main control module to be digitally converted, and the infrared image is transmitted to the computer through the data transmission module; the computer belongs to the control terminal and can also be a mobile phone.
(3) The method comprises the following steps of carrying out contrastive analysis on digitized infrared images through a contrastive analysis detection system on a computer to obtain real-time test piece water seepage data, wherein the contrastive analysis is to calculate the test piece water seepage situation according to the speed of temperature change in a temperature cloud chart of the infrared images by using an image recognition algorithm, when the real-time test piece water seepage data exceeds a set value of the computer, the computer judges that the test piece has water seepage, when 3 test pieces in 6 test pieces have water seepage, the test is stopped, the computer sends an instruction to a main control module to control a valve 11 to be closed, the computer records the water pressure H at that time, and calculates the concrete seepage-resistant grade S according to the following formula:
S＝10H－1
wherein the unit of H is MPa.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A concrete impermeability test device comprises a device main body (1), a workbench (2) and a columnar test mold (3), and is characterized in that the test mold (3) comprises a fixed mold (4) integrally connected with the workbench (2) and a movable mold (5) sliding on the workbench (2), and an infrared camera (6) for collecting an infrared image of a concrete test piece in the test mold (3) is arranged above the test mold (3);
the bottom of examination mould (3) is equipped with infiltration platform (7) that infiltration groove (8) were seted up to the upper surface, the centre of infiltration groove (8) is through delivery port (9) connection inlet tube (10) and valve (11), delivery port (9) axis center is equipped with the subassembly one that is used for plugging up delivery port (9), form passageway (15) between delivery port (9) and valve (11), one side of passageway (15) is equipped with the subassembly two that is used for detecting the gas tightness, subassembly two utilizes movable mould (5) to be close to the gas tightness of infiltration platform (7) and examination mould (3) before detection test begins to fixed mould (4).
2. The concrete impermeability test device of claim 1, wherein: the device further comprises a telescopic device (13) and a telescopic piece (14) driven by the telescopic device, wherein one end of the telescopic piece (14) is positioned on the outer wall of the movable die (5).
3. The concrete impermeability test device of claim 1, wherein: the upper surface of workstation (2) is equipped with and moves movable mould (5) assorted activity groove (16), activity groove (16) upper end is equipped with and is used for controlling spacing at least two sets of spout (17) to movable mould (5).
4. The concrete impermeability test device of claim 1, wherein: the second component comprises a sealing cylinder (18) positioned at the lower end of the movable die (5), a piston rod (19) positioned at the front end of the sealing cylinder (18) and an air inlet (21) positioned at the lower end of the water seepage table (7) and communicated with the channel (15), one end of the piston rod (19) is connected with the inner wall of the sealing cylinder (18) through a first spring (20), and the other end of the piston rod is positioned in the air inlet (21).
5. The concrete impermeability test device of claim 4, wherein: the upper surface of the sealing cylinder (18) positioned at the outer side of the movable mould (5) is provided with an observation port (26) with scales.
6. The concrete impermeability test device of claim 5, wherein: the first component comprises a central piece (24) positioned in the axis center of the water outlet (9), an elastic plug (22) which is connected with the lower end of the central piece (24) through a second spring (23) and is used for plugging the channel (15), and a water outlet net (25) positioned at the lower end of the central piece (24) and used for communicating the channel (15) with the water outlet (9).
7. The concrete impermeability test device of claim 1, wherein: the opposite face of fixed mould (4) and movable mould (5) all is fixed and is equipped with silica gel layer (12), the both ends open end of movable mould (5) all is equipped with lug (27), the both ends open end of fixed mould (4) are equipped with recess (28) with lug (27) assorted.
8. The concrete impermeability test device of claim 1, wherein: all be equipped with on the both ends open end outer wall of fixed mould (4) and movable mould (5) and prolong board (29), be equipped with on prolonging board (29) of fixed mould (4) towards convex column (30) of movable mould (5), be equipped with on prolonging board (29) of movable mould (5) to fixed mould (4) and with convex column (30) assorted convex cylinder (31) dorsad, the inside of convex cylinder (31) is equipped with third spring (32) that offsets with convex column (30).
9. The concrete impermeability test device of claim 1, wherein: be equipped with on the outer wall of fixed mould (4) and rotate seat (33) and dwang (34), infrared camera (6) are located dwang (34).
10. A concrete impermeability test method, which uses the concrete impermeability test device of any one of claims 1-9, wherein the device main body (1) further comprises a main control module and a data transmission module, and is characterized in that: the test method comprises the following steps:
(1) placing a columnar test piece on a water seepage table (7), attaching the inner wall of the columnar test piece to a fixed mold (4), moving a movable mold (5) to the test piece and the fixed mold (4) until the test piece and the fixed mold are fixed, and moving an infrared camera (6) to the position right above the test piece after detecting the air tightness;
(2) opening a valve (11), increasing the water pressure by 0.1MPa every 8 hours from the water pressure of 0.1MPa, injecting water into a water seepage tank (8), collecting an infrared image of a test piece by using an infrared camera (6) at regular time during water injection, transmitting the infrared image to a main control module for digital conversion, and transmitting the infrared image to a computer through a data transmission module;
(3) the digital infrared image is contrastively analyzed through a contrast analysis detection system on a computer to obtain real-time test piece water seepage data, when the real-time test piece water seepage data exceeds a set value of the computer, the computer judges that the test piece seeps water, when 3 test pieces among 6 test pieces seep water, the test is stopped, the computer sends an instruction to a main control module to control a valve (11) to be closed, the computer records the current water pressure H, and the concrete impermeability label S is calculated according to the following formula:
S＝10H－1
wherein the unit of H is MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210339758.2A CN114813503A (en) | 2022-04-01 | 2022-04-01 | Concrete impermeability test device and method |
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| CN202210339758.2A CN114813503A (en) | 2022-04-01 | 2022-04-01 | Concrete impermeability test device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116465814A (en) * | 2023-06-19 | 2023-07-21 | 四川省兴冶岩土工程检测有限责任公司 | Concrete impermeability instrument control system, method and computer readable storage medium |
| CN116879044A (en) * | 2023-08-21 | 2023-10-13 | 重庆交通大学 | Device and method capable of realizing alternating pressure test |
-
2022
- 2022-04-01 CN CN202210339758.2A patent/CN114813503A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116465814A (en) * | 2023-06-19 | 2023-07-21 | 四川省兴冶岩土工程检测有限责任公司 | Concrete impermeability instrument control system, method and computer readable storage medium |
| CN116465814B (en) * | 2023-06-19 | 2023-09-22 | 四川省兴冶岩土工程检测有限责任公司 | Concrete impermeability instrument control system, method and computer readable storage medium |
| CN116879044A (en) * | 2023-08-21 | 2023-10-13 | 重庆交通大学 | Device and method capable of realizing alternating pressure test |
| CN116879044B (en) * | 2023-08-21 | 2024-02-02 | 重庆交通大学 | Device and method capable of realizing alternating pressure test |
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