Impermeability detection device for concrete structural member

Abstract

According to the impermeability detection device for the concrete structural member, the through hole is formed in the concrete sample, the display assembly is installed in the through hole, the display assembly is composed of the sealing assembly and the detection column, the detection column is slidably arranged on the sealing assembly, the detection column and the sealing assembly are detachably designed, and the sealing assembly is used for sealing the through hole. A plurality of pieces of water detection paper are uniformly fixed on the detection column, and the water detection paper is made of a material which can change color when encountering water; when impermeability detection is needed, the sealing assembly is used for sealing the through hole, then the detection column is slid to be attached to the concrete sample, the water detection paper is attached to the concrete sample, when the concrete sample is permeated by water, the color of the water detection paper attached to the concrete sample can be changed in sequence, and therefore the specific condition that the concrete sample is permeated by the water is judged. And the experiment result is more accurate.

Description

Technical Field

[0001] This invention relates to the field of concrete testing, specifically to a device for testing the impermeability of concrete structural components. Background Technology

[0002] Concrete is a widely used building material. Due to its high strength and durability, it is often used as the main material in modern construction. In the construction of some special building structures, even higher requirements are placed on concrete. For example, in basements, air-raid shelters, and underground tunnels, the impermeability of concrete is typically a critical requirement. Therefore, for high-end concrete, impermeability is also one of its quality testing standards.

[0003] Currently, the equipment used for testing the permeability of concrete is a permeability testing instrument. Generally, a cylindrical concrete sample is installed in the upper mold and then fixed to the lower mold. After fixing, water is continuously discharged through an outlet inside the lower mold for permeability testing. Testing personnel regularly observe the concrete sample and record any seepage at the top. The permeability testing instrument typically has six sets of molds, and the test ends when the concrete samples in three of these sets show signs of seepage at the top.

[0004] Existing permeability testing instruments have shortcomings when testing the permeability of concrete. A key issue is that they cannot determine the permeability of the concrete sample midway through the test; they can only observe the result after complete permeation, which is prone to errors. Summary of the Invention

[0005] The purpose of this invention is to provide a device for testing the impermeability of concrete structural components to solve the above-mentioned problems.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a seepage resistance testing device for concrete structural components, comprising a box body, wherein a plurality of testing groups are arranged on the box body, the testing groups being composed of a lower mold and an upper mold, wherein the lower mold is fixedly installed on the box body, and the upper mold is detachably fixed on the lower mold; The upper mold contains a concrete sample, and a through hole is made through the concrete sample. A display component is installed in the through hole. The display component consists of a sealing component and a detection column. The detection column is slidably mounted on the sealing component. The detection column and the sealing component are detachable. The sealing component is used to seal the through hole. Several water testing papers are fixed on the detection column.

[0007] Preferably, a plurality of bolts passing through the upper mold are fixed on the lower mold, the bolts being equipped with nuts, and the upper mold and the lower mold are pressed together by tightening the nuts.

[0008] Preferably, the water testing paper is cobalt chloride test paper, which has the characteristics of turning red when it comes into contact with water and turning blue when it loses water, and can be reused.

[0009] Preferably, a handle is fixedly installed on the detection column to facilitate the placement and removal of the detection column.

[0010] Preferably, a water outlet is provided on the lower mold, the water outlet is directly facing the concrete sample, a water pump is installed in the box to discharge water from the water outlet, and a switch is fixed on the box for control.

[0011] Preferably, the sealing assembly includes a fixed cylinder fixed to the lower mold, an inflatable block fixed to the lower mold is disposed inside the fixed cylinder, an inflation chamber is formed inside the inflatable block, a piston is slidably mounted in the inflation chamber, a spring fixed to the lower mold is disposed at the bottom of the piston, an air bag is fixed on the fixed cylinder, an air outlet pipe is fixedly connected to the bottom of the inflation chamber, the air outlet pipe is connected to the air bag through a connecting pipe, a threaded block is threadedly connected to the inflatable block, both the threaded block and the fixed cylinder have threads, a push block is fixed at the bottom of the threaded block, and the push block abuts against the piston.

[0012] Preferably, a vertical rod is fixed to the top of the threaded block, the vertical rod passes through the fixed cylinder, a receiving plate is fixed to the top of the vertical rod, a slot is opened in the receiving plate, an insert is fixed to the bottom of the detection column, the insert is slidably connected to the slot, and the insert can be pulled out from the slot.

[0013] Preferably, a number of sealing rings are embedded on the piston to ensure the sealing between the piston and the inflation block.

[0014] In summary, the present invention has the following beneficial effects: 1. This invention involves creating a through-hole in a concrete sample and installing a display component within the through-hole. The display component comprises a sealing component and a detection column, wherein the detection column is slidably mounted on the sealing component. The detection column and the sealing component are detachably designed. The sealing component is used to seal the through-hole. Several water-testing papers are uniformly fixed on the detection column. The water-testing papers are made of a material that changes color when exposed to water. When performing a water resistance test, the through-hole is first sealed using the sealing component. Then, the detection column is slid to fit against the concrete sample, causing the water-testing papers to adhere to the concrete sample. When water penetrates the concrete sample, the water-testing papers that are in contact with the concrete sample will change color sequentially, thereby determining the specific extent of water penetration in the concrete sample and making the experimental results more accurate.

[0015] 2. The water test paper uses cobalt chloride test paper, which has the characteristic of turning red when it comes into contact with water and turning blue when it loses water. It can be reused and is very convenient.

[0016] 3. The sealing assembly includes a fixed cylinder fixed to the lower mold, an inflatable block fixed to the lower mold inside the fixed cylinder, an inflation chamber inside the inflatable block, a piston slidably mounted in the inflation chamber, a spring fixed to the lower mold at the bottom of the piston, a ring of airbags fixed to the fixed cylinder, an air outlet pipe fixedly connected to the bottom of the inflation chamber, the air outlet pipe and the airbags connected by a connecting pipe, a threaded block threaded to the inflatable block, the threaded block and the fixed cylinder both having threads, a push block fixed to the bottom of the threaded block, the push block abutting against the piston; a vertical rod fixed to the top of the threaded block, the vertical rod penetrating the fixed cylinder. A receiving plate is fixed at the top of the upright, and a slot is opened in the receiving plate. An insert is fixed at the bottom of the detection column, and the insert slides into the slot. The insert can be pulled out of the slot. When sealing is required, the insert is inserted into the slot, and the detection column is rotated. The detection column drives the receiving plate to rotate together, and the receiving plate drives the threaded block to rotate. Through the threaded connection between the threaded block and the inflation block, the push block descends, and the push block pushes the piston down. The spring is compressed, and the air in the inflation chamber at the bottom of the piston is forced into the air bladder through the connecting pipe. The air bladder expands and achieves a seal, which is very convenient. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the appearance of an embodiment of this application; Figure 2 This is a cross-sectional view of the inspection group; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the structure after the testing team removed the upper mold and the concrete sample; Figure 5 yes Figure 4 Enlarged view of point B in the middle; Figure 6 yes Figure 4 First structural breakdown diagram after removing the fixing cylinder; Figure 7 yes Figure 4 A split view of the second structure after removing the fixing cylinder; Figure 8 yes Figure 7 Enlarged diagram of point C in the middle.

[0019] In the diagram: 11. Box body; 12. Groove; 13. Switch; 14. Testing group; 15. Lower mold; 16. Upper mold; 17. Retaining ring; 18. Concrete sample; 19. Through hole; 20. Testing column; 21. Handle; 23. Ring groove; 25. Bolt; 26. Nut; 27. Water testing paper; 28. Insert; 29. ​​Slot; 30. Receiving plate; 31. Upright pole; 32. Fixing cylinder; 33. Airbag; 34. Connecting pipe; 35. Air outlet pipe; 36. Inflation chamber; 37. Spring; 38. Piston; 39. Push block; 40. Threaded block; 41. Inflation block; 42. Water outlet. Detailed Implementation

[0020] Example 1:

[0021] Combined with appendix Figures 1-8 The aforementioned concrete structural member impermeability testing device includes a box body 11, on which a plurality of testing groups 14 are arranged. Each testing group 14 is composed of a lower mold 15 and an upper mold 16, wherein the lower mold 15 is fixedly installed on the box body 11, and the upper mold 16 is detachably fixed on the lower mold 15. The upper mold 16 and the lower mold 15 are fixed by fixing a number of bolts 25 that pass through the upper mold 16 on the lower mold 15. The bolts 25 are equipped with nuts 26. The upper mold 16 and the lower mold 15 are pressed together by tightening the nuts 26. A retaining ring 17 is fixedly installed inside the upper mold 16. The upper mold 16 is used to install the concrete sample 18. After the bottom of the upper mold 16 is facing upward, the concrete sample 18 can be inserted from the bottom opening of the upper mold 16. If the concrete sample 18 has a size deviation and cannot be inserted into the upper mold 16, the concrete sample 18 can be pressed into the upper mold 16 by a screw press. A through hole 19 is made through the concrete sample 18, and a display component is installed in the through hole 19. The display component consists of a sealing component and a detection column 20, wherein the detection column 20 is slidably mounted on the sealing component. The detection column 20 and the sealing component are detachable. The sealing component is used to seal the through hole 19. Several water testing papers 27 are evenly fixed on the detection column 20. The water testing papers 27 are made of a material that changes color when exposed to water. To perform a water resistance test, first seal the through hole 19 using the sealing assembly, then slide the test column 20 to fit the concrete sample 18, so that the water-testing paper 27 fits the concrete sample 18. When water penetrates the concrete sample 18, the water-testing paper 27 fitted to the concrete sample 18 will change color sequentially, thereby determining the specific extent of water penetration in the concrete sample 18 and making the experimental results more accurate. Since the test column 20 can be removed from the sealing assembly, it can be taken out of the through hole 19 for observation.

[0022] It should be noted that the water test paper 27 is made of cobalt chloride test paper, which has the characteristic of turning red when it comes into contact with water and turning blue when it loses water. It can be reused. After applying waterproof adhesive to the strip of cobalt chloride test paper, it is pasted and fixed around the detection column 20. After the test is completed, the water test paper 27 on the detection column 20 is dried with cold air or air-dried in the shade. It can be used again for the next test, which is very convenient.

[0023] Specifically, a handle 21 is fixedly installed on the detection column 20 to facilitate the placement and removal of the detection column 20.

[0024] A water outlet 42 is provided on the lower mold 15, and the water outlet 42 is directly facing the concrete sample 18. A water pump is installed on the housing 11 to supply water from the water outlet 42. Each test group 14 corresponds to an independent water pump. The water supply pressure of the water pump is controlled by a switch 13 installed on the housing 11. The switch 13 is located in a groove 12 provided on the housing 11. A digital display is provided inside the housing 11 or on one side of the housing 11 to display the water pressure in real time (not shown, the relevant structure and settings are conventional technology).

[0025] In addition, an annular groove 23 is formed on the lower mold 15, and a sealing strip is placed in the annular groove 23 to enhance the sealing between the lower mold 15 and the upper mold 16.

[0026] Example 2:

[0027] The sealing assembly includes a fixed cylinder 32 fixed to the lower mold 15, an inflatable block 41 fixed to the lower mold 15 inside the fixed cylinder 32, an inflation chamber 36 inside the inflatable block 41, a piston 38 slidably mounted in the inflation chamber 36, a spring 37 fixed to the lower mold 15 at the bottom of the piston 38, an air bag 33 fixed to the fixed cylinder 32, an air outlet pipe 35 fixedly connected to the bottom of the inflation chamber 36, the air outlet pipe 35 and the air bag 33 connected by a connecting pipe 34, and a threaded block 40 threadedly connected to the inflatable block 41. (See reference...) Figure 8Both the threaded block 40 and the fixed cylinder 32 have threads. A push block 39 is fixed at the bottom of the threaded block 40, and the push block 39 abuts against the piston 38. A vertical rod 31 is fixed to the top of the threaded block 40, the vertical rod 31 passes through the fixed cylinder 32, a receiving plate 30 is fixed to the top of the vertical rod 31, a slot 29 is formed in the receiving plate 30, and an insert 28 is fixed to the bottom of the detection column 20. The insert 28 is slidably connected to the slot 29. (See reference) Figure 6 The insert 28 can be pulled out of the slot 29; To perform sealing, insert the insert 28 into the slot 29, rotate the detection column 20, which drives the receiving plate 30 to rotate together, and the receiving plate 30 drives the threaded block 40 to rotate. Through the threaded connection between the threaded block 40 and the inflation block 41, the push block 39 descends, pushing the piston 38 to descend, and the spring 37 is compressed. The air in the inflation chamber 36 at the bottom of the piston 38 is forced into the airbag 33 through the connecting pipe 34, and the airbag 33 inflates to achieve sealing. Rotate the detection column 20 until it can no longer be rotated, which means that the airbag 33 has inflated to the full extent and achieved a complete seal. It should be noted that several sealing rings are embedded in the piston 38 to ensure the sealing between the piston 38 and the air block 41.

[0028] Instructions for use: First, remove each of the upper molds 16, insert the concrete sample 18 into the upper mold 16, and then fix the upper mold 16 together with the concrete sample 18 onto the lower mold 15. The through hole 19 should be aligned with the fixing cylinder 32 and inserted. After completion, the detection column 20 is inserted into the through hole 19, the insert 28 is inserted into the slot 29, the detection column 20 is rotated, the detection column 20 drives the receiving plate 30 to rotate together, the receiving plate 30 drives the threaded block 40 to rotate, the threaded block 40 is threadedly connected to the inflatable block 41, the push block 39 descends, the push block 39 pushes the piston 38 to descend, the spring 37 is compressed, the air in the inflation chamber 36 at the bottom of the piston 38 is forced into the airbag 33 through the connecting pipe 34, the airbag 33 inflates and seals the through hole 19; The detection column 20 is slid to fit the concrete sample 18, so that the water testing paper 27 fits the concrete sample 18. When the concrete sample 18 is penetrated by water, the water testing paper 27 that is in contact with the concrete sample 18 will change color in sequence, so as to determine the specific situation of water penetration of the concrete sample 18. The detection column 20 is removed from the through hole 19 at regular intervals for observation.

[0029] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand and implement the present invention. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A device for testing the impermeability of concrete structures, comprising a housing (11), wherein a plurality of testing groups (14) are arranged on the housing (11), the testing group (14) being composed of a lower mold (15) and an upper mold (16), wherein the lower mold (15) is fixedly installed on the housing (11), and the upper mold (16) is detachably fixed on the lower mold (15), characterized in that: The upper mold (16) contains a concrete sample (18), and a through hole (19) is opened through the concrete sample (18). A display component is installed in the through hole (19). The display component consists of a sealing component and a detection column (20). The detection column (20) is slidably mounted on the sealing component. The detection column (20) and the sealing component are detachable. The sealing component is used to close the through hole (19). Several water testing papers (27) are fixed on the detection column (20).

2. The permeability testing device for concrete structural members according to claim 1, characterized in that: Several bolts (25) passing through the upper mold (16) are fixed on the lower mold (15). The bolts (25) are equipped with nuts (26). The upper mold (16) and the lower mold (15) are pressed together by tightening the nuts (26).

3. The permeability testing device for concrete structural members according to claim 2, characterized in that: The water test paper (27) is made of cobalt chloride, which has the characteristics of turning red when it comes into contact with water and turning blue when it loses water, and can be reused.

4. The permeability testing device for concrete structural members according to claim 3, characterized in that: A handle (21) is fixedly installed on the detection column (20) to facilitate the taking and placing of the detection column (20).

5. The permeability testing device for concrete structural members according to claim 4, characterized in that: A water outlet (42) is opened on the lower mold (15), the water outlet (42) is directly facing the concrete sample (18), a water pump is installed on the box (11) to discharge water from the water outlet (42), and a switch (13) is fixed on the box (11) for control.

6. The permeability testing device for concrete structural members according to claim 5, characterized in that: The sealing assembly includes a fixed cylinder (32) fixed on the lower mold (15), an inflatable block (41) fixed to the lower mold (15) is provided inside the fixed cylinder (32), an inflatable cavity (36) is opened inside the inflatable block (41), a piston (38) is slidably installed in the inflatable cavity (36), a spring (37) fixed to the lower mold (15) is provided at the bottom of the piston (38), an air bag (33) is fixed on the fixed cylinder (32), an air outlet pipe (35) is fixedly connected to the bottom of the inflatable cavity (36), the air outlet pipe (35) and the air bag (33) are connected through a connecting pipe (34), a threaded block (40) is threadedly connected to the inflatable block (41), the threaded block (40) and the fixed cylinder (32) are both threaded, a push block (39) is fixed at the bottom of the threaded block (40), and the push block (39) abuts against the piston (38).

7. The permeability testing device for concrete structural members according to claim 6, characterized in that: A support rod (31) is fixed at the top of the threaded block (40), the support rod (31) passes through the fixed cylinder (32), a receiving plate (30) is fixed at the top of the support rod (31), a slot (29) is opened in the receiving plate (30), and an insert (28) is fixed at the bottom of the detection column (20). The insert (28) is slidably connected to the slot (29), and the insert (28) can be pulled out from the slot (29).

8. The permeability testing device for concrete structural members according to claim 7, characterized in that: Several sealing rings are embedded on the piston (38) to ensure the sealing between the piston (38) and the air block (41).

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