Concrete water absorption experiment instrument

Abstract

The utility model relates to a concrete water absorption experiment instrument, and belongs to the technical field of concrete detection. The device comprises a water receiving box, a concrete mold, a weighing assembly and a water spraying assembly, the interior of an opening in the upper side of the concrete mold is hollow for concrete pouring, and the weighing assembly comprises a gravity sensor externally connected with a displayer, a lifting hook acting on the gravity sensor and a weighing plate arranged on the lifting hook and used for placing the concrete mold; the water spraying assembly comprises a spray head, the spray head is located above the concrete mold and sprays water to the concrete mold, the water receiving box is located below the weighing plate, and the water receiving box covers the vertical projection of the concrete mold. The method has the effect of measuring the water absorption rate of the concrete in unit area.

Description

Technical Field

[0001] This application relates to the field of concrete testing, and in particular to a test instrument for concrete water absorption rate. Background Technology

[0002] Concrete refers to artificial stone made by mixing cement as the main binder with water, sand, and gravel, and, when necessary, chemical admixtures and mineral admixtures, in appropriate proportions, and then uniformly mixing, compacting, molding, and curing.

[0003] Since concrete with different mix proportions has different properties, and different usage environments require different concrete properties, it is necessary to conduct various tests on the concrete to determine whether the concrete meets the usage requirements. Among them, the water absorption rate of concrete is an important performance data. The existing testing method is usually to cast a concrete block, weigh the concrete block before and after immersion in water, and calculate the corresponding water absorption rate by the change in mass.

[0004] The above testing methods do not conform to the actual situation of concrete in rainwater. In order to reflect the actual situation of concrete in contact with rainwater, it is often necessary to measure the water absorption rate per unit area of ​​concrete. To better measure the water absorption rate per unit area of ​​concrete, an experimental instrument needs to be designed. Utility Model Content

[0005] To better determine the water absorption rate of concrete per unit area, this application provides a concrete water absorption rate testing instrument.

[0006] The concrete water absorption rate testing instrument provided in this application adopts the following technical solution:

[0007] A concrete water absorption rate testing instrument includes a water collection box, a concrete mold, a weighing component, and a water spraying component. The concrete mold has an open upper side and a hollow interior for concrete pouring. The weighing component includes a gravity sensor with an external display, a hook acting on the gravity sensor, and a weighing plate mounted on the hook for placing the concrete mold. The water spraying component includes a nozzle positioned above the concrete mold and spraying water towards it. The water collection box is located below the weighing plate and covers the vertical projection of the concrete mold.

[0008] By adopting the above technical solution, the weighing component weighs the concrete mold and the concrete poured inside, and the water spraying component sprays water on the upper side wall of the concrete. Compared with immersing the entire concrete in water, the detection of water absorption rate per unit area is more accurate and less susceptible to influence from other surfaces. The presence of the concrete mold also encloses other surfaces of the concrete, making it less likely for the water sprayed by the water spraying component to seep into other surfaces of the concrete. The detection process is simpler to operate, as there are no steps of immersion and removal.

[0009] Optionally, the concrete mold includes a fixed box and a detachable box. The fixed box is a square shell with an opening at the top, and the detachable box is a stepped shell that runs vertically through the top and bottom. The smaller end of the detachable box is inserted into the fixed box and fits against the inner wall of the fixed box, while the end of the detachable box away from the fixed box is larger than the fixed box.

[0010] By adopting the above technical solution, the concrete mold is set into two parts: a fixed box and a detachable box. The fixed box serves as the base, and the size of the opening of the detachable box determines the inspection area, thereby reducing the volume of the entire concrete block.

[0011] Optionally, the concrete mold further includes a rubber ring, the larger portion of the detachable box is destroyed after the concrete is poured, and the rubber ring is fitted over the concrete, with the upper sidewall of the rubber ring flush with the upper sidewall of the concrete.

[0012] By adopting the above technical solution, and by removing part of the detachable box, the rubber ring can be installed on the top of the concrete. By having the rubber ring adhere to the surface of the concrete, the penetration of water is reduced.

[0013] Optionally, the rubber ring is wider at the top and narrower at the bottom, meaning the outer wall of the rubber ring is inclined.

[0014] By adopting the above technical solution, the rubber ring is inclined with a larger upper side and a smaller lower side, which better guides the water on the concrete surface to flow away.

[0015] Optionally, the lower sidewall of the rubber ring is provided with a partition ring groove.

[0016] By adopting the above technical solution and opening the partition ring groove, water is less likely to cross the rubber ring and seep into other concrete surfaces when it flows away from the outer wall of the rubber ring.

[0017] Optionally, the system also includes a water-permeable sponge assembly and a cleaning sponge assembly. The water-permeable sponge assembly includes a closed ring, a water-permeable sponge, and a water-permeable driving component that drives the closed ring to reciprocate above and outside the concrete mold. The water-permeable sponge is installed inside the closed ring and, driven by the water-permeable driving component, covers the upper sidewall of the concrete inside the concrete mold. The cleaning sponge assembly includes a packaging ring, an absorbent sponge, and a water-absorbing driving component that drives the packaging ring to reciprocate above and outside the concrete mold. The absorbent sponge is installed inside the packaging ring and, driven by the water-absorbing driving component, contacts the upper sidewall of the concrete inside the concrete mold.

[0018] By adopting the above technical solution, the water-permeable sponge of the water-permeable sponge component stays on the concrete surface, and the water sprayed by the water spraying component is absorbed by the water-permeable sponge, ensuring that the water is evenly distributed on the concrete surface and completing the water permeation process better and faster. The water spraying component does not need to spray water continuously. At the same time, after the water permeation process is completed, the water-permeable sponge can be reset under the action of the water permeation drive component. The water-absorbing sponge cleans up the excess water on the concrete surface, so as not to affect the test results. The water-permeable sponge and the water-absorbing sponge move alternately to achieve different functions, and can realize timed automatic operation.

[0019] Optionally, the lower part of the absorbent sponge protrudes from the packaging ring.

[0020] By adopting the above technical solution, the water-absorbing sponge is more effective at cleaning water from the concrete surface, and can push the water off the concrete surface.

[0021] Optionally, the lower side wall of the concrete mold is provided with an installation hole, and the weighing plate is provided with a protrusion that can be inserted into the installation hole.

[0022] By adopting the above technical solution, the concrete mold is more stable on the weighing plate by cooperating with the protruding column on the mounting hole. At the same time, since the bottom of the concrete mold is not protruding, the concrete mold is more stable when pouring concrete into it, and the pouring process is more convenient.

[0023] In summary, by using a weighing component to weigh the concrete mold and the concrete poured inside, and a water spraying component to spray water on the upper side wall of the concrete, the detection of water absorption rate per unit area is more accurate than immersing the entire concrete in water. It is also less susceptible to interference from other surfaces. Furthermore, the presence of the concrete mold encloses the other surfaces of the concrete, making it less likely for the water sprayed by the water spraying component to seep into other surfaces of the concrete. The detection process is also simpler to operate, as there are no steps involved in immersion and removal. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the experimental apparatus in the embodiments of this application;

[0025] Figure 2 This is a schematic diagram of the structure of the concrete mold in the embodiments of this application;

[0026] Figure 3 This is a schematic diagram illustrating the interaction between the concrete mold and the cleaning sponge in an embodiment of this application.

[0027] Figure 4 This is a schematic diagram of the weighing component, water spraying component, and water receiving box in the embodiments of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Base; 2. Water receiving box; 3. Concrete mold; 31. Fixing box; 311. Mounting column; 312. Mounting hole; 32. Detachable box; 321. Disassembly groove; 322. Shearing groove; 33. Rubber ring; 34. Separating ring groove; 4. Weighing assembly; 41. Bracket; 42. Gravity sensor; 421. Display; 43. Hook; 44. Weighing plate; 45. Protruding column; 5. Water spray assembly; 51. Sprayer head; 52. Water pump; 53. Water pipe; 6. Water-permeable sponge assembly; 61. Mounting base; 62. Closing ring; 63. Water-permeable sponge; 64. Water-permeable drive component; 7. Cleaning sponge assembly; 71. Packaging ring; 72. Absorbent sponge; 73. Absorbent drive component. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0030] This application discloses a test instrument for concrete water absorption rate.

[0031] Reference Figure 1 A concrete water absorption rate testing instrument includes a base 1, a water receiving box 2, a concrete mold 3, a weighing component 4, a water spraying component 5, a water-permeable sponge component 6, and a cleaning sponge component 7. The water receiving box 2 is placed on the base 1. The weighing component 4 is fixed on the base 1 and located above the water receiving box 2 for weighing the concrete mold 3 and the concrete poured inside it. The water spraying component 5 sprays water onto the upper side wall of the concrete inside the concrete mold 3. The water-permeable sponge component 6 is moved above the concrete mold 3 to ensure that the water is in full contact with the concrete and penetrates into it. The cleaning sponge component 7 is used to clean the excess water from the upper side wall of the concrete.

[0032] Reference Figure 2 Specifically, the concrete mold 3 has an open upper side and a hollow interior for concrete pouring. The concrete mold 3 includes a fixed box 31, a detachable box 32, and a rubber ring 33. The fixed box 31 is a square shell with an open upper part. The bottom inner wall of the fixed box 31 has protruding mounting posts 311. There are two mounting posts 311 spaced apart. The bottom wall of the fixed box 31 has mounting holes 312 coaxially opened at the position of the mounting posts 311. The two mounting posts 311 have two mounting holes 312 respectively. The four side walls of the fixed box 31 are inclined, so that the size of the fixed box 31 gradually decreases from top to bottom. The detachable box 32 is a stepped shell that runs vertically through the body. At the same time, the size of the detachable box 32 gradually decreases from top to bottom, thus forming inclined side walls. The smaller end of the detachable box 32 is inserted into the fixed box 31. The lower outer wall of the detachable box 32 is in contact with the inner wall of the fixed box 31. The size of the end of the detachable box 32 away from the fixed box 31 is larger than that of the fixed box 31.

[0033] Reference Figure 2 and Figure 3In this embodiment, the detachable box 32 has a disassembly groove 321 on the outer wall of the stepped surface, and a shearing groove 322 that connects to the disassembly groove 321 is vertically provided, so that the upper part of the detachable box 32 can be easily disassembled and removed. The rubber ring 33 is annular and fits on the exposed concrete outside the detachable box 32 after the upper part is removed. The upper side wall of the rubber ring 33 is flush with the upper side wall of the concrete. The rubber ring 33 is larger at the top and smaller at the bottom, that is, the outer side wall of the rubber ring 33 is inclined. The lower side wall of the rubber ring 33 has a dividing ring groove 34. At the same time, the part of the rubber ring 33 inside the dividing ring groove 34 extends downward across the exposed concrete to the outside of the fixed box 31.

[0034] In another embodiment, the fixed box 31 may be a frustum of a cone with a smaller size, while the detachable box 32 is a stepped frustum of a cone that gradually decreases in size from top to bottom.

[0035] Reference Figure 1 , Figure 3 and Figure 4 The weighing component 4 operates on a similar principle to a hanging scale, including a bracket 41, a gravity sensor 42 connected to an external display 421, a hook 43 acting on the gravity sensor 42, and a weighing plate 44 mounted on the hook 43 for placing the concrete mold 3. The bracket 41 is installed in a U-shape in the middle of the left-right direction of the base 1. The water collection box 2 is located between the bracket 41 and the base 1. The gravity sensor 42 is installed in the middle area of ​​the top of the bracket 41. The hook 43 extends downwards in a U-shape. The weighing plate 44 is fixed under the hook 43, and both ends of the weighing plate 44 slide and cooperate with the bracket 41, making the weighing plate 44 more stable. The weighing plate 44 is provided with protrusions 45 that are inserted into the mounting holes 312. The protrusions 45 are spaced along the length of the weighing plate 44 and correspond one-to-one with two mounting holes 312 on the lower side wall of the concrete mold 3.

[0036] The water spraying assembly 5 includes a nozzle 51, a water pump 52, and a water pipe 53. The nozzle 51 is mounted on the bracket 41 and extends above the concrete mold 3 to spray water onto the concrete inside the concrete mold 3. The water pump 52 and the water pipe 53 are located in the water receiving box 2 to draw water, and the water receiving box 2 covers the vertical projection of the concrete mold 3, so that the water dripping from the concrete mold 3 is received by the water receiving box 2 as much as possible.

[0037] The water-permeable sponge assembly 6 and the cleaning sponge assembly 7 are respectively located on the left and right sides of the water receiving box 2 and are detachably connected to the base 1. In this embodiment, they are fixed with screws. Specifically, the water-permeable sponge assembly 6 includes a mounting base 61, a closing ring 62, a water-permeable sponge 63, and a water-permeable driving component 64 that drives the closing ring 62 to reciprocate above and outside the concrete mold 3. The mounting base 61 is fixed to the base 1 with screws. The water-permeable driving component 64 is mounted on the top of the mounting base 61 with a cylinder. One side of the closing ring 62 is fixed to the piston rod of the water-permeable driving component 64, and the other side extends towards the concrete mold 3. The water-permeable sponge 63 is embedded in the closing ring 62. At the same time, steel wires can be inserted into the closing ring 62 to fix the water-permeable sponge 63. The water-permeable driving component 64 drives the closing ring 62 to move horizontally left and right. When the closing ring 62 moves above the concrete mold 3, the water-permeable sponge 63 covers the upper side wall of the concrete inside the concrete mold 3. At the same time, the closing ring 62 is in contact with the concrete or the gap between the closing ring 62 and the concrete is minimal.

[0038] The cleaning sponge assembly 7 includes a mounting base 61, a packaging ring 71, an absorbent sponge 72, and a water-absorbing drive 73 that drives the packaging ring 71 to reciprocate above and outside the concrete mold 3. The mounting base 61 of the cleaning sponge assembly 7 has the same structure as the mounting base 61 of the seepage sponge assembly 6. The water-absorbing drive 73 also uses a cylinder and is mounted on the mounting base 61 of the cleaning sponge assembly 7. The absorbent sponge 72 has the same structure as the seepage sponge 63. The way the absorbent sponge 72 is installed and fixed inside the packaging ring 71 is the same as that of the seepage sponge 63. The driving method of the water-absorbing drive 73 and the seepage drive 64 is the same. The absorbent sponge 72 and the seepage sponge 63 alternately contact the concrete inside the concrete mold 3. However, the thickness of the packaging ring 71 is less than the thickness of the closing ring 62, so that the lower part of the absorbent sponge 72 protrudes from the packaging ring 71. The distance between the packaging ring 71 and the upper side wall of the concrete inside the concrete mold 3 is larger than the distance between the closing ring 62 and the upper side wall of the concrete inside the concrete mold 3, which is beneficial for removing excess water.

[0039] The implementation principle of the concrete water absorption rate test instrument in this application embodiment is as follows: the water-permeable sponge 63 moves onto the concrete, the water spraying component 5 sprays water onto the water-permeable sponge 63, and the water comes into full contact with the concrete. After a specified time, the water-permeable sponge 63 is removed, and the water-absorbing sponge 72 moves above the concrete to clean the upper surface of the concrete. The corresponding change in gravity after the concrete absorbs water can be obtained. By repeating the operation, the change in the unit area water absorption rate of the concrete over time can be obtained.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A test instrument for concrete water absorption rate, characterized in that: The system includes a water collection box (2), a concrete mold (3), a weighing assembly (4), and a water spraying assembly (5). The concrete mold (3) has an open upper side and a hollow interior for concrete pouring. The weighing assembly (4) includes a gravity sensor (42) connected to an external display (421), a hook (43) acting on the gravity sensor (42), and a weighing plate (44) placed on the hook (43) for placing the concrete mold (3). The water spraying assembly (5) includes a nozzle (51) located above the concrete mold (3) and spraying water towards the concrete mold (3). The water collection box (2) is located below the weighing plate (44) and covers the vertical projection of the concrete mold (3).

2. The concrete water absorption rate testing instrument according to claim 1, characterized in that: The concrete mold (3) includes a fixed box (31) and a detachable box (32). The fixed box (31) is a square shell with an opening at the top. The detachable box (32) is a stepped shell that runs vertically through the top and bottom. The smaller end of the detachable box (32) is inserted into the fixed box (31) and fits against the inner wall of the fixed box (31). The end of the detachable box (32) away from the fixed box (31) is larger than the fixed box (31).

3. The concrete water absorption rate testing instrument according to claim 2, characterized in that: The concrete mold (3) also includes a rubber ring (33). The larger part of the detachable box (32) is destroyed after the concrete is poured. The rubber ring (33) is fitted onto the outside of the concrete, and the upper sidewall of the rubber ring (33) is flush with the upper sidewall of the concrete.

4. The concrete water absorption rate testing instrument according to claim 3, characterized in that: The rubber ring (33) is larger at the top and smaller at the bottom, meaning that the outer wall of the rubber ring (33) is inclined.

5. The concrete water absorption rate testing instrument according to claim 4, characterized in that: The lower sidewall of the rubber ring (33) is provided with a partition ring groove (34).

6. The concrete water absorption rate testing instrument according to claim 1, characterized in that: It also includes a water-permeable sponge assembly (6) and a cleaning sponge assembly (7). The water-permeable sponge assembly (6) includes a closed ring (62), a water-permeable sponge (63), and a water-permeable driving component (64) that drives the closed ring (62) to reciprocate above and outside the concrete mold (3). The water-permeable sponge (63) is installed inside the closed ring (62) and covers the upper side wall of the concrete inside the concrete mold (3) under the drive of the water-permeable driving component (64). The cleaning sponge assembly (7) includes a packaging ring (71), a water-absorbing sponge (72), and a water-absorbing driving component (73) that drives the packaging ring (71) to reciprocate above and outside the concrete mold (3). The water-absorbing sponge (72) is installed inside the packaging ring (71) and contacts the upper side wall of the concrete inside the concrete mold (3) under the drive of the water-absorbing driving component (73).

7. The concrete water absorption rate testing instrument according to claim 6, characterized in that: The lower part of the absorbent sponge (72) protrudes from the packaging ring (71).

8. The concrete water absorption rate testing instrument according to claim 1, characterized in that: The concrete mold (3) has an installation hole (312) on its lower side wall, and the weighing plate (44) is provided with a protrusion (45) that is inserted into the installation hole (312).

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