Concrete durability detection equipment
By designing concrete durability testing equipment and adopting a durability testing frame and strength testing components, the problem of difficulty in testing the strength of concrete structures after soaking was solved, realizing automated strength testing and improving testing efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG HUIFENG CONSTR ENG INSPECTION CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-21
AI Technical Summary
There is a lack of specialized equipment in the current technology for testing the durability of concrete, especially in sulfate attack tests, where it is difficult to conveniently detect whether the strength of concrete structures has decreased significantly after immersion.
A concrete durability testing device was designed, including a durability testing frame and a strength testing component. The device automates the testing of concrete structural strength by immersing concrete samples in the durability testing frame and using an electrically controlled winch to drive the concrete slab to apply pressure to the testing frame.
This technology enables automated testing of the structural strength of concrete samples after multiple immersions in sulfate solution, simplifying the operation process and improving testing efficiency and accuracy.
Smart Images
Figure CN224152165U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of concrete testing, and in particular to a concrete durability testing device. Background Technology
[0002] Testing the durability of concrete is a crucial step in ensuring the quality and safety of concrete structures. The sulfate attack test is an important method for evaluating the durability of concrete under sulfate conditions. This test involves immersing concrete samples in a sulfate solution containing sodium sulfate or magnesium sulfate, simulating the chemical corrosion environment that may be encountered in actual engineering projects. This method can effectively assess the resistance of concrete to sulfate attack.
[0003] Currently, there is a lack of specialized equipment for concrete durability testing. The testing process mainly relies on workers manually immersing concrete samples in sulfate solutions. After immersion, it is not convenient to test whether the structural strength has decreased significantly. Therefore, this utility model proposes a concrete durability testing device that is different from the existing technology to solve the above-mentioned technical problems. Utility Model Content
[0004] To address the aforementioned problem that it is inconvenient to detect whether the structural strength has significantly decreased after soaking, this invention provides a concrete durability testing device.
[0005] This utility model provides a concrete durability testing device, which adopts the following technical solution:
[0006] A concrete durability testing device includes a horizontal plate, a lower support frame installed on the upper surface of the horizontal plate, a testing frame welded to the rear side of the upper surface of the lower support frame, a strength testing component installed at the middle position of the upper surface of the testing frame, counterweight plate placement frames installed on both sides of the upper surface of the testing frame, concrete slabs disposed within the counterweight plate placement frames and the strength testing component, and a first durability testing frame disposed within the inner cavity of the lower support frame, the inner cavity of the first durability testing frame being filled with an appropriate amount of sulfate solution.
[0007] By adopting the above technical solution, an appropriate amount of sulfate solution such as sodium sulfate or magnesium sulfate is injected into the inner cavity of the first durability testing frame through the top opening. Then, the concrete sample to be tested is placed in the inner cavity of the first durability testing frame for multiple thorough soakings. After the number of soakings reaches the standard, it is placed in the middle position on the upper surface of the lower bracket. Then, an appropriate number of concrete slabs are placed into the strength testing component to apply pressure to the upper surface of the concrete sample, which facilitates the detection of whether the structural strength of the concrete sample has decreased significantly.
[0008] Optionally, multiple sets of vertical plates are uniformly welded into the inner cavity of the first durability testing frame, and multiple sets of sticky notes are uniformly pasted on the lower end of the front side wall of the first durability testing frame.
[0009] By adopting the above technical solution, concrete samples that have been soaked a different number of times are placed in different positions inside the first durability test frame under the action of multiple sets of vertical plates, and the number of times the concrete samples have been soaked can be recorded with the help of sticky notes.
[0010] Optionally, multiple sets of bottom wheels that contact the upper surface of the horizontal plate are installed at the outer edge of the bottom wall of the first durability testing frame, and a discharge pipe is installed at the bottom of one side of the outer wall of the first durability testing frame.
[0011] By adopting the above technical solution, the bottom wheels facilitate the movement of the first durability test frame, making it convenient to pick up and put down concrete samples, and the discharge pipe facilitates the discharge of sulfate solution from the inner cavity of the first durability test frame.
[0012] Optionally, the strength testing component includes an electrically controlled winch, which is fixed at the middle position on the upper surface of the testing frame. A steel wire rope is installed at the output end of the electrically controlled winch, penetrating the upper surface of the testing frame. A second durability testing frame is installed at the bottom end of the steel wire rope, and a concrete slab is provided in the inner cavity of the second durability testing frame.
[0013] By adopting the above technical solution, an appropriate number of concrete slabs are removed from the counterweight plate placement frame and then placed into the inner cavity of the second durability testing frame. The electric winch is started and the wire rope is stretched, so that the second durability testing frame can be moved downward under the action of gravity and press on the upper surface of the concrete sample, which facilitates the detection of whether the structural strength of the concrete sample has decreased significantly.
[0014] Optionally, multiple sets of hollow tubes are welded to both sides of the upper surface of the testing frame. T-shaped rods penetrating the upper surface of the testing frame are installed inside the multiple sets of hollow tubes, and the bottom ends of the multiple sets of T-shaped rods are welded to the upper surface of the second durability testing frame.
[0015] By adopting the above technical solution, when the second durability testing frame moves up and down, it can drive multiple sets of T-shaped rods to move synchronously in the hollow tube cavity at the corresponding positions, thereby avoiding the situation of left and right swaying when the second durability testing frame moves up and down.
[0016] Optionally, multiple sets of reinforcing plates are obliquely welded to the front side of the back side wall of the testing frame, and the tops of the multiple sets of reinforcing plates are welded to each other at the upper surface of the inner cavity of the testing frame.
[0017] By adopting the above technical solution, the support stability of the testing frame can be enhanced under the action of multiple sets of reinforcing plates.
[0018] Optionally, a magnet plate is fixed to one end of the upper surface of the lower bracket, and grooved slides are provided on both the front and rear sides of the upper surface of the lower bracket. A stainless steel plate is magnetically attracted to the outer wall of the magnet plate, and multiple sets of T-shaped sliders that slide and connect with the grooved slides are welded to the bottom end of the stainless steel plate.
[0019] By adopting the above technical solution, the stainless steel plate is moved to the other side to overcome the magnetic attraction between it and the magnetic plate, so that the stainless steel plate can automatically clean the concrete debris on the upper surface of the lower bracket during the movement.
[0020] In summary, this utility model has at least one of the following beneficial effects:
[0021] After the concrete sample has been soaked a certain number of times, it is placed in the middle of the upper surface of the lower support. Then, an appropriate number of concrete slabs are taken out from the counterweight plate placement frame and placed into the inner cavity of the second durability test frame. The electric winch is started and the wire rope is stretched so that the second durability test frame and the concrete slabs can move downward and apply pressure to the upper surface of the concrete sample. This can detect whether the structural strength of the concrete sample has decreased significantly after being repeatedly soaked and eroded by sulfate solutions such as sodium sulfate or magnesium sulfate.
[0022] Moving the stainless steel plate to the other side overcomes the magnetic attraction between it and the magnetic plate, allowing the stainless steel plate to automatically clean the concrete debris from the upper surface of the lower bracket during the movement. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the front sectional view of the present invention;
[0024] Figure 2 This is a front view structural diagram of the present invention;
[0025] Figure 3 This is a schematic diagram of the left-side cross-sectional structure of this utility model.
[0026] In the diagram: 1. Reinforcing plate; 2. Magnetic plate; 3. Stainless steel plate; 4. T-shaped slider; 5. Lower bracket; 6. Bottom wheel; 7. Horizontal plate; 8. Vertical plate; 9. Discharge pipe; 10. First durability test frame; 11. Groove slide; 12. Second durability test frame; 13. Test frame; 14. T-shaped rod frame; 15. Counterweight plate placement frame; 16. Hollow tube; 17. Electric winch; 18. Steel wire rope; 19. Concrete slab; 20. Sticky note. Detailed Implementation
[0027] The following is in conjunction with the appendix Figure 1-3 The present invention will be described in further detail below.
[0028] Please refer to the attached diagram in the instruction manual. Figure 1 ,2 3. One embodiment of this utility model: a concrete durability testing device, including a horizontal plate 7, a lower bracket 5 installed on the upper surface of the horizontal plate 7, a testing frame 13 welded to the rear side of the upper surface of the lower bracket 5, the lateral longitudinal section of the testing frame 13 being L-shaped, a strength testing component installed at the middle position of the upper surface of the testing frame 13, the strength testing component including an electrically controlled winch 17, the electrically controlled winch 17 being fixed at the middle position of the upper surface of the testing frame 13, a steel wire rope 18 being installed at the output end of the electrically controlled winch 17 penetrating the upper surface of the testing frame 13, a second durability testing frame 12 being installed at the bottom end of the steel wire rope 18, the lateral longitudinal section of the second durability testing frame 12 being U-shaped.
[0029] Please refer to the attached diagram in the instruction manual. Figure 1 , 2 3. On both sides of the upper surface of the test frame 13, there are counterweight plate placement frames 15. Concrete plates 19 are set inside the counterweight plate placement frames 15 and the second durability test frame 12. The length and weight of the concrete plates 19 are constant. The lower bracket 5 has a first durability test frame 10 in its inner cavity. The upper surface of the first durability test frame 10 is set as an opening. The inner cavity of the first durability test frame 10 is filled with an appropriate amount of sulfate solution such as sodium sulfate or magnesium sulfate. Multiple sets of vertical plates 8 are evenly welded into the inner cavity of the first durability test frame 10. Multiple sets of sticky notes 20 are evenly pasted on the lower end of the front side wall of the first durability test frame 10.
[0030] An appropriate amount of sodium sulfate or magnesium sulfate solution is injected into the inner cavity of the first durability testing frame 10 through the top opening. Then, the concrete sample to be tested is placed in the inner cavity of the first durability testing frame 10 and thoroughly soaked multiple times. After the number of soaking times reaches the standard, it is placed in the middle position on the upper surface of the lower bracket 5. Then, an appropriate number of concrete slabs 19 are taken out from the counterweight plate placement frame 15 and placed into the inner cavity of the second durability testing frame 12. The electric winch 17 is started and the wire rope 18 is stretched so that the second durability testing frame 12 can be moved downward under the action of gravity and press on the upper surface of the concrete sample. Under the gravity of an appropriate number of concrete slabs 19, it can be detected whether the structural strength of the concrete sample has decreased significantly after being repeatedly soaked and eroded by sodium sulfate or magnesium sulfate solution.
[0031] Please refer to the attached diagram in the instruction manual. Figure 1 , 2In section 3, multiple sets of bottom wheels 6 are installed at the outer edge of the bottom wall of the first durability testing frame 10, which contact the upper surface of the horizontal plate 7. A discharge pipe 9 is installed at the bottom of one side of the outer wall of the first durability testing frame 10, and a control valve is installed on the outside of the discharge pipe 9. Pulling the first durability testing frame 10 to move it on the upper surface of the horizontal plate 7 via the multiple sets of bottom wheels 6 opens the control valve on the discharge pipe 9, allowing the sulfate solution inside the first durability testing frame 10 to be discharged.
[0032] Please refer to the attached diagram in the instruction manual. Figure 1 , 2 3. Multiple sets of hollow tubes 16 are welded to both sides of the upper surface of the testing frame 13. T-shaped rods 14, penetrating the upper surface of the testing frame 13, are installed within each set of hollow tubes 16. The hollow tubes 16 and T-shaped rods 14 are positioned between the counterweight plate placement frame 15 and the electrically controlled winch 17. The bottom ends of the multiple sets of T-shaped rods 14 are welded to the upper surface of the second durability testing frame 12. When the second durability testing frame 12 moves up and down, it can drive the multiple sets of T-shaped rods 14 to move synchronously within the corresponding hollow tubes 16, thus preventing lateral swaying during the up-and-down movement of the second durability testing frame 12.
[0033] Please refer to the attached diagram in the instruction manual. Figure 1 , 2 In addition to the third type, multiple sets of reinforcing plates 1 are obliquely welded to the front side of the back side wall of the testing frame 13. The tops of the multiple sets of reinforcing plates 1 are all welded to the upper surface of the inner cavity of the testing frame 13. The reinforcing plates 1 are located on the outer side of the second durability testing frame 12. The multiple sets of reinforcing plates 1 can enhance the support stability of the testing frame 13.
[0034] Please refer to the attached diagram in the instruction manual. Figure 1 , 2 A magnetic plate 2 is fixed to one end of the upper surface of the lower bracket 5. Grooved slides 11 are provided on both the front and rear sides of the upper surface of the lower bracket 5. A stainless steel plate 3 is magnetically attracted to the outer wall of the magnetic plate 2. Multiple sets of T-shaped sliders 4 are welded to the bottom of the stainless steel plate 3 and slide in relation to the grooved slides 11. The lower surface of the stainless steel plate 3 is in contact with the upper surface of the lower bracket 5. Moving the stainless steel plate 3 to the other side overcomes the magnetic attraction between it and the magnetic plate 2, allowing the stainless steel plate 3 to automatically clean concrete debris from the upper surface of the lower bracket 5 during movement. When the stainless steel plate 3 moves horizontally, it drives the multiple sets of T-shaped sliders 4 to move synchronously within the inner cavity of the grooved slides 11, thus facilitating the restriction of the movement path of the stainless steel plate 3.
[0035] Working principle: When using this concrete durability testing equipment, an appropriate amount of sodium sulfate or magnesium sulfate solution is injected into the inner cavity of the first durability testing frame 10 through the top opening. Then, the concrete sample to be tested is placed in the inner cavity of the first durability testing frame 10 for multiple thorough immersions. Under the action of multiple sets of vertical plates 8, concrete samples that have been immersed for different numbers of times are placed in different positions in the inner cavity of the first durability testing frame 10. The number of immersions of the concrete sample can be recorded with the help of sticky notes 20. After each immersion, the concrete sample is taken out, air-dried, and then immersed again. The number of immersions depends on the type of concrete sample and the needs of the place of use.
[0036] After the required number of soaking cycles are reached, the sample is placed in the middle of the upper surface of the lower bracket 5. Then, an appropriate number of concrete slabs 19 are removed from the counterweight plate placement frame 15 and placed into the inner cavity of the second durability testing frame 12. The electric winch 17 is started and the wire rope 18 is stretched so that the second durability testing frame 12 can be moved downward under the action of gravity and press on the upper surface of the concrete sample. Under the gravity of an appropriate number of concrete slabs 19, it can be tested whether the structural strength of the concrete sample has decreased significantly after being repeatedly soaked and eroded by sulfate solutions such as sodium sulfate or magnesium sulfate. Concrete samples with significantly decreased strength will show a large number of cracks and fragments after being compressed, while concrete samples with no significant decrease in strength will not show significant changes.
[0037] When concrete samples break into pieces, workers only need to move the stainless steel plate 3 to the other side to overcome the magnetic attraction between it and the magnetic plate 2. This allows the stainless steel plate 3 to automatically clean the concrete pieces on the upper surface of the lower bracket 5 during the movement. When the stainless steel plate 3 moves horizontally, it can drive multiple sets of T-shaped sliders 4 to move synchronously in the inner cavity of the groove slide 11, which facilitates limiting the movement path of the stainless steel plate 3.
[0038] When the second durability testing frame 12 moves up and down, it can drive multiple sets of T-shaped rods 14 to move synchronously in the hollow tube 16 cavity at the corresponding position, thereby avoiding the left and right swaying when the second durability testing frame 12 moves up and down. Under the action of multiple sets of reinforcing plates 1, the support stability of the testing frame 13 can be enhanced. When taking concrete samples, the staff only needs to pull the first durability testing frame 10 to move it on the upper surface of the horizontal plate 7 through multiple sets of bottom wheels 6 and open the control valve on the discharge pipe 9 to discharge the sulfate solution in the cavity of the first durability testing frame 10.
[0039] All standard parts used in this utility model document can be purchased from the market. Each component in this utility model document can be customized according to the description and drawings. The specific connection methods of each component adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, and will not be described in detail here.
[0040] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.
Claims
1. A concrete durability testing apparatus comprising a cross plate (7), characterised in that: A lower bracket (5) is installed on the upper surface of the horizontal plate (7). A test frame (13) is welded to the rear side of the upper surface of the lower bracket (5). A strength test component is installed in the middle of the upper surface of the test frame (13). A counterweight plate placement frame (15) is installed on both sides of the upper surface of the test frame (13). A concrete slab (19) is installed inside both the counterweight plate placement frame (15) and the strength test component. A first durability test frame (10) is installed in the inner cavity of the lower bracket (5). The inner cavity of the first durability test frame (10) is filled with an appropriate amount of sulfate solution.
2. The concrete durability detection device according to claim 1, wherein: The inner cavity of the first durability test frame (10) is uniformly welded with multiple sets of vertical plates (8), and multiple sets of sticky notes (20) are uniformly pasted on the lower end of the front side wall of the first durability test frame (10).
3. The concrete durability detection device according to claim 1, wherein: Multiple sets of bottom wheels (6) that contact the upper surface of the horizontal plate (7) are installed at the outer edge of the bottom wall of the first durability test frame (10), and a discharge pipe (9) is installed at the bottom of one side of the outer wall of the first durability test frame (10).
4. The concrete durability testing apparatus of claim 1, wherein: The strength testing component includes an electrically controlled winch (17), which is fixed at the middle position on the upper surface of the testing frame (13). A steel wire rope (18) is installed at the output end of the electrically controlled winch (17) and passes through the upper surface of the testing frame (13). A second durability testing frame (12) is installed at the bottom end of the steel wire rope (18), and a concrete slab (19) is provided in the inner cavity of the second durability testing frame (12).
5. The concrete durability testing apparatus of claim 4, wherein: Multiple sets of hollow tubes (16) are welded to both sides of the upper surface of the test frame (13). T-shaped rods (14) that penetrate the upper surface of the test frame (13) are provided inside the multiple sets of hollow tubes (16). The bottom ends of the multiple sets of T-shaped rods (14) are welded to the upper surface of the second durability test frame (12).
6. The concrete durability testing apparatus of claim 1, wherein: The front side of the back side wall of the testing frame (13) is inclinedly welded with multiple sets of reinforcing plates (1), and the top of each set of reinforcing plates (1) is welded to the upper surface of the inner cavity of the testing frame (13).
7. The concrete durability testing apparatus of claim 1, wherein: A magnet plate (2) is fixed to one end of the upper surface of the lower bracket (5). The front and rear sides of the upper surface of the lower bracket (5) are provided with grooved slides (11). A stainless steel plate (3) is magnetically attracted to the outer wall of the magnet plate (2). Multiple sets of T-shaped sliders (4) that slide and connect with the grooved slides (11) are welded to the bottom of the stainless steel plate (3).