Concrete crack resistance test device

Abstract

The utility model relates to a concrete crack resistance test device, and belongs to the technical field of researching or analyzing concrete by using a special method. The device comprises a square box body provided with at least two layers of drawers; a heater and a sprayer are fixed on the inner wall of the box body corresponding to each layer of drawer, and heat dissipation holes are formed in the inner wall; and a display, a controller and an observation port are arranged on the outer wall of the box body corresponding to each layer of drawer, so that different proportions, temperatures and humidity can be controlled for testing. The drawable part of the drawer is defined by a bottom plate, left and right baffles and front and rear baffles, the bottom plate is provided with a sinking groove, sliding grooves are formed in the left and right sides of the sinking groove, and notches are formed in ports of the two sides of the sinking groove; the left baffle and the right baffle are connected with the vertical cutter pieces in the drawer through bolts, the bottom edges of the vertical cutter pieces are placed on the sliding strips respectively, and the disassembly and assembly convenience of the device is improved on the whole.

Description

Technical Field

[0001] The utility model relates to a concrete anti-cracking test device, belonging to the technical field of using special methods to study or analyze concrete (G01N33 / 38). Background Art

[0002] Concrete is a building material made of a mixture of raw materials such as cement, sand, gravel and water. Concrete itself has high strength, rigidity and durability and is widely used in building structures. However, due to its own brittleness, it is prone to cracks under the influence of various factors such as heavy loads and temperature changes. The appearance of cracks will affect the bearing capacity and service life of the concrete structure. Therefore, studying the crack resistance of concrete is particularly important to enhance the safety and durability of the structure.

[0003] Traditional test methods such as the flat plate method and the ring method can only test a single environment when studying the crack resistance of concrete. In response to this deficiency, new technologies have emerged that can adjust different temperatures and humidity to measure the crack resistance of concrete. However, this device can only simulate one temperature and humidity at the same time, or only one set of concrete specimens can be tested in the same temperature and humidity environment, which limits the test efficiency. Utility Model Content

[0004] The first technical problem to be solved by the utility model is: how to improve the adaptability of concrete anti-cracking test.

[0005] The second technical problem to be solved by the utility model is: how to improve the convenience of disassembly and assembly of the concrete crack resistance testing device.

[0006] The utility model proposes a technical solution to solve the above technical problem: a concrete crack resistance test device, comprising a square box; at least two layers of drawers are arranged in the square box; a heater and a sprayer are fixed on the inner wall of the box corresponding to each layer of drawers, and a plurality of heat dissipation holes are also arranged on the inner wall of the box corresponding to each layer of drawers; a display, a controller and an observation port are arranged on the outer wall of the box corresponding to the outside of each layer of drawers; each layer of drawers is used to pour concrete of different proportions during the test.

[0007] In order to solve the second technical problem mentioned above, the utility model further improves the technical solution proposed above in that the pull-out part of the drawer is surrounded by a bottom plate, left and right baffles and front and rear baffles; a sinking groove is formed in the middle of the bottom plate of the drawer, and sliding grooves are provided on the left and right sides of the sinking groove, and the two ends of a plurality of slide bars are inserted into the sliding grooves and form a moving pair with the bottom plate; notches are provided at the two end parts of the left and right sides of the sinking groove, and the left and right baffles of the drawer are inserted into the notches, and folded edges are provided at the two ends of the left and right baffles of the drawer, and the folded edges and the parts of the front and rear baffles of the drawer extending out of the left and right baffles are fixed with screws.

[0008] Furthermore, the drawer is provided with a plurality of vertical knife pieces for inducing concrete cracking; the vertical knife piece is formed by bending a thin plate into a three-dimensional piece with a pointed house-shaped cross-section; the pointed top of the house-shaped vertical knife piece faces upward to form a blade, and the bottom edges on both sides of the house-shaped vertical knife piece are respectively placed on two adjacent sliding bars; a plurality of spaced support plates are fixedly provided on the inner walls on both sides of the house-shaped vertical knife piece, and the two support plates that are farther apart are respectively connected to the left and right baffles of the drawer by first bolts, and second bolts are passed through the remaining support plates.

[0009] Furthermore, lighting lamps are installed at both ends of the heater.

[0010] The beneficial effects of the utility model are as follows: since at least two layers of drawers are arranged in a square box; a heater and a sprayer are fixed on the inner wall of the box corresponding to each layer of drawers, and a display, a controller and an observation port are arranged on the outer wall of the box corresponding to each layer of drawers, during the test, not only concrete with different proportions can be poured into different drawers, but also a variety of temperatures and humidity can be simulated, which greatly improves the adaptability of the concrete crack resistance test.

[0011] Furthermore, because the left and right baffles of the drawer are inserted into the notches at both ends of the sinking groove of the drawer bottom plate, and the folded edges at both ends of the left and right baffles of the drawer and the parts of the left and right baffles extending from the front and rear baffles of the drawer are fixed with screws, the left and right baffles of the drawer can be disassembled and assembled, and the detachable left and right baffles of the drawer are connected to the vertical knife parts in the drawer by bolts, and the bottom edges on both sides of the house shape of the vertical knife parts are respectively placed on the sliding strips that form a moving pair with the drawer bottom plate, thereby improving the overall convenience of disassembly and assembly of the concrete anti-cracking test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following is a further description of a concrete crack resistance testing device of the present invention in conjunction with the accompanying drawings.

[0013] Figure 1 It is a schematic diagram of the external structure of a square box of a concrete crack resistance testing device in an embodiment.

[0014] Figure 2 It is a schematic diagram of the internal structure of a square box of a concrete crack resistance testing device in an embodiment.

[0015] Figure 3 It is a schematic diagram of the drawer structure of the concrete anti-cracking test device in the embodiment.

[0016] Figure 4 yes Figure 3 Schematic diagram of the split drawer structure.

[0017] Figure 5 It is a schematic diagram of the structure of the vertical knife member of the concrete crack resistance testing device in the embodiment.

[0018] Figure 6 It is a schematic diagram of the heater structure of the concrete crack resistance test device in the embodiment.

[0019] In the figure: 1. square box; 2. drawer; 3. heater; 4. sprayer; 5. heat dissipation hole; 6. display; 7. controller; 8. observation port; 9. drawer bottom plate; 10. left and right baffles; 11. front and rear baffles; 12. sinking groove; 13. slide groove; 14. slide bar; 15. folding edge; 16. screw; 17. vertical knife piece; 18. bottom edge of vertical knife piece; 19. support plate; 20. first bolt; 21. second bolt; 22. lighting lamp; 23. notch. DETAILED DESCRIPTION Example

[0020] A concrete crack resistance test device of this embodiment is as follows Figure 1 , 2 As shown, it includes a square box 1; three layers of drawers 2 are arranged in the square box 1; a heater 3 and a sprayer 4 are fixed on the inner wall of the box 1 corresponding to each layer of drawers 2, and a plurality of heat dissipation holes 5 are also arranged on the inner wall of the box 1 corresponding to each layer of drawers 2; a display 6, a controller 7 and an observation port 8 are arranged on the outer wall of the box 1 outside each layer of drawers 2.

[0021] like Figure 3 , 4 As shown, the pull-out part of the drawer is surrounded by a bottom plate 9, left and right baffles 10 and front and rear baffles to form a circle 11. A sinking groove 12 is formed in the middle of the bottom plate 9 of the drawer 2. Slide grooves 13 are arranged on the left and right sides of the sinking groove 12. Both ends of a plurality of slide bars 14 are inserted into the slide grooves 13 to form a moving pair with the bottom plate 9. Notches 23 are arranged at both ends of the left and right sides of the sinking groove 12. The left and right baffles 10 of the drawer are inserted into the notches 23. Folding edges are arranged at both ends of the left and right baffles 10 of the drawer. The folding edges 15 and the parts of the front and rear baffles of the drawer extending out of the left and right baffles are fixed with screws 16.

[0022] like Figure 5 As shown, a plurality of vertical blade members 17 for inducing concrete cracking are provided in the drawer; the vertical blade member 17 is formed by bending a thin plate into a three-dimensional member with a pointed house-shaped cross-section; the pointed top of the house-shaped vertical blade member 17 faces upward to form a blade, and the bottom edges 18 on both sides of the house-shaped vertical blade member are respectively placed on two adjacent slide bars 14; a plurality of spaced support plates 19 are fixedly provided on the inner walls on both sides of the house-shaped vertical blade member, and the two support plates 19 that are farther apart are respectively connected to the left and right baffles of the drawer through the first bolts 20, and the second bolts 21 are passed through the remaining support plates.

[0023] like Figure 6 As shown, lighting lamps 22 are installed at both ends of the heater 3.

[0024] During the test, the tip surface of the vertical blade 17 is coated with vaseline and covered with a film, and then concrete of different proportions is poured in. The required temperature and humidity are adjusted by the controller 6, and the display 6 displays the temperature and humidity information. The cracking of the concrete is observed through the observation port 8. The lighting lamps 22 at both ends of the heater 3 increase the nighttime observation. After the test, the concrete falls off easily due to the special design of the left and right baffles 10 of the drawer and the vertical blade 17, which are all connected parts for easy disassembly.

[0025] The present invention is not limited to the above-mentioned embodiments, and any technical solutions formed by equivalent replacement shall fall within the protection scope required by the present invention.

Claims

1. A concrete crack resistance test device, comprising a square box; characterized in that : The square box is provided with at least two layers of drawers; a heater and a sprayer are fixed on the inner wall of the box corresponding to each layer of drawers, and a plurality of heat dissipation holes are also provided on the inner wall of the box corresponding to each layer of drawers; a display, a controller and an observation port are provided on the outer wall of the box corresponding to each layer of drawers; each layer of drawers is used to pour concrete of different proportions during the test.

2. The device according to claim 1, characterized in that: The pull-out part of the drawer is surrounded by a bottom plate, left and right baffles and front and rear baffles; a sinking groove is formed in the middle of the bottom plate of the drawer, and sliding grooves are provided on the left and right sides of the sinking groove, and the two ends of multiple slides are inserted into the sliding grooves to form a moving pair with the bottom plate; notches are provided at the two end portions of the left and right sides of the sinking groove, and the left and right baffles of the drawer are inserted into the notches, and folded edges are provided at the two ends of the left and right baffles of the drawer, and the folded edges and the parts of the front and rear baffles of the drawer extending out of the left and right baffles are fixed with screws.

3. The device according to claim 2, characterized in that: The drawer is provided with a plurality of vertical knife pieces for inducing concrete cracking; the vertical knife pieces are formed by bending a thin plate into a three-dimensional piece with a pointed house-shaped cross-section; the pointed top of the house-shaped vertical knife piece faces upward to form a blade, and the bottom edges of the house-shaped vertical knife piece are respectively placed on two adjacent sliding bars; a plurality of spaced support plates are fixedly provided on the inner walls of the two sides of the house-shaped vertical knife piece, and the two support plates that are farther apart are respectively connected to the left and right baffles of the drawer by first bolts, and second bolts are passed through the remaining support plates.

4. The device according to claim 1, characterized in that: Illuminating lamps are installed at both ends of the heater.

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