Concrete sulfate resistance circulating detection device
By designing a concrete sulfate resistance cycle testing device, which uses a clamping device to simulate stress state and liquid circulation in a solution tank, the problem of inaccurate prediction of the long-term durability performance of concrete is solved, and more accurate performance evaluation and efficient resource utilization are achieved.
Patent Information
- Application Number
- CN202520151712.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-01-22
AI Technical Summary
Current technology cannot accurately predict the long-term durability of concrete under sulfate attack conditions.
A concrete sulfate resistance cyclic testing device was designed, comprising a clamping device and a solution tank. The clamping device simulates the stress state of concrete by precisely adjusting the pre-tightening force, and the solution tank is connected to the test device through a drainage system to realize liquid circulation and simulate corrosive media.
It can more accurately evaluate the durability and mechanical properties of concrete under different preload conditions, provide reliable engineering application basis, and improve resource utilization efficiency and the continuity of the test process.
Smart Images
Figure CN223808323U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to concrete test technical field, concretely, relate to a kind of concrete resistance to sulphate cyclic detection device. BACKGROUND
[0002] In the existing concrete test technology, concrete is a kind of structural material that is widely used and crucial in the field of civil engineering, and its performance in actual engineering environment is particularly critical. Concrete structures often need to cope with the combined effects of multiple environmental factors, including in specific environments with sulphate erosion, the mineral components of ettringite, calcium sulphoaluminate and other minerals inside the concrete will chemically react with sulphate ions, not only will it lead to the generation of volume-expanding products, such as further crystallization of ettringite or the formation of new expansive mineral phases, but also will directly cause significant changes in the internal microstructure of concrete, including the initiation and propagation of microcracks and the gradual increase of pore structure. When concrete is under stress, the pre-existing microcracks inside it are prone to accelerated expansion under stress concentration, which provides a more convenient penetration channel for the erosion medium, accelerating the deterioration process of concrete and leading to the problem of being unable to accurately predict the long-term durability of concrete.
[0003] There is an urgent need for a concrete resistance to sulphate cyclic detection device to solve the problem of being unable to accurately predict the long-term durability of concrete. SUMMARY
[0004] The utility model aims at providing a kind of concrete resistance to sulphate cyclic detection device to improve the above-mentioned problem. In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:
[0005] A kind of concrete resistance to sulphate cyclic detection device, comprising: the test device is provided with clamping device, the bottom of the clamping device is connected with the test device, the clamping device includes multiple support plates and fixed structure, the fixed structure is vertically arranged along the height direction of the test device, multiple the support plate is all provided with connecting hole, multiple the support plate is connected with the fixed structure by connecting hole, multiple the support plate is arranged at intervals, and the adjacent two support plates are used to set concrete test piece between the support plate;
[0006] Solution tank, the side of the solution tank is connected with the side of the test device, and the liquid in the solution tank enters the test device through the liquid discharge system.
[0007] Preferably, multiple the support plate includes first steel plate and second steel plate, the first steel plate is arranged at the bottom of the second steel plate, the first steel plate and the second steel plate are arranged at intervals, and the concrete test piece is arranged between the first steel plate and the second steel plate.
[0008] Preferably, the first steel plate has a first area value, the second steel plate has a second area value, the first area value is less than the second area value, and the first steel plate has a first height value greater than the second height value.
[0009] Preferably, the plurality of support plates comprises a third steel plate arranged on top of the second steel plate, and the third steel plate and the second steel plate are arranged in a spaced manner by the fixing structure.
[0010] Preferably, a spring is further included, the spring is sleeved on the fixing structure, and two ends of the spring are in contact with the second steel plate and the third steel plate, respectively.
[0011] Preferably, the third steel plate has the same structure as the second steel plate.
[0012] Preferably, the fixing structure comprises a stud, a first nut and a second nut, the bottom of the stud is fixed by the first nut, and the top of the stud is fixed by the second nut.
[0013] Preferably, the test device comprises a heating system, a test box and a steel frame, the bottom end of the steel frame is arranged in the test box, the top end of the steel frame is connected to the bottom of the clamping device, and the heating system is arranged between the test box and the steel frame.
[0014] Preferably, the test device comprises an air circulator arranged on the top of the test box, the air circulator is provided with a circulating port, one end of the circulating port extends to the clamping device, and the other end of the circulating port extends out of the test box.
[0015] Preferably, the liquid drainage system comprises a first circulating pipe, a circulating pump and a second circulating pipe, two ends of the circulating pump are connected to one end of the first circulating pipe and one end of the second circulating pipe, respectively, the other end of the first circulating pipe is arranged in the solution tank, and the other end of the second circulating pipe is arranged in the test device.
[0016] The beneficial effects of the structure are:
[0017] The clamping device and the solution tank are introduced, the clamping device is arranged in the test device, the clamping device simulates the behavior of concrete under actual stress state by accurately controlling the pre-tightening force, and the durability and mechanical properties of concrete under different pre-tightening forces can be more accurately evaluated, thereby providing more reliable basis for the application in actual engineering.
[0018] The solution tank is used for storing and supplying liquid, the liquid is used for simulating one of erosion mediums that concrete can encounter in natural environment, in order to ensure continuity and effectiveness of the test process, the solution tank and the experimental device are connected through the liquid drainage system. The liquid circulation between the two tank bodies during the test process can not only meet the accurate control requirement of the liquid concentration of the test, but also greatly improve the resource utilization efficiency. The problem that the long-term durability of the concrete cannot be accurately predicted is effectively solved.
[0019] Other features and advantages of the present application will be described in the following description, and some will become apparent from the description, or will be understood from the practice of the present application. The purpose and other advantages of the present application can be achieved and obtained through the structures specifically pointed out in the written description, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained from these drawings without creative labor.
[0021] Fig. 1 It is a schematic diagram of the overall device of the present application;
[0022] Fig. 2 It is a schematic diagram of the internal structure in the present application;
[0023] Fig. 3 It is a schematic diagram of the clamping device in the present application;
[0024] Markings in the figure:
[0025] 1, clamping device; 2, concrete test piece; 3, solution tank; 4, liquid drainage system; 5, spring; 6, heating system; 7, test tank; 8, steel frame; 9, air circulator; 11, support plate; 12, fixing structure; 41, first circulating pipe; 42, circulating pump; 43, second circulating pipe; 111, first steel plate; 112, second steel plate; 113, third steel plate; 121, stud; 122, first nut; 123, second nut. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model protection.
[0027] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the utility model, the terms "first", "second" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.
[0028] As Figs. 1 to 3 shown, a kind of concrete sulfate resistance cycle detection device, comprising: the test device is provided with clamping device 1, the bottom of the clamping device 1 is connected with the test device, the clamping device 1 includes multiple support plates 11 and fixed structure 12, the fixed structure 12 is vertically arranged along the height direction of the test device, multiple support plates 11 are all provided with connecting hole, multiple support plates 11 are connected with the fixed structure 12 by connecting hole, multiple support plates 11 are arranged at intervals, and two adjacent support plates 11 are used to set concrete test piece 2;Solution tank 3, the side of the solution tank 3 is connected with the side of the test device, and the liquid in the solution tank 3 enters the test device by liquid discharge system 4.
[0029] In the implementation test process, first, the pre-tightening force of bolt in the fixed structure 12 is accurately regulated using digital display torque wrench, until the predetermined value of test design is reached. Then, the clamping device 1 is placed in the test device. The liquid in the solution tank 3 flows into the test device through the liquid discharge system 4 by the control system, which is used to soak the concrete test piece 2. After reaching the preset soaking time, the concrete test piece 2 is taken out for subsequent test analysis.
[0030] The clamping device 1 effectively realizes the regulation and control of the axial stress state level of the concrete test piece 2 by precisely controlling the size of the wrench torque T and the pre-tightening force F. For the M10 to M68 specification coarse thread of the fixed structure 12, the wrench torque T is approximately equal to 0.2 times the product of the pre-tightening force F and the nominal diameter d (i.e. T ≈ 0.2Fd) under the condition of no lubrication, the clamping device 1 simulates the behavior of the concrete test piece 2 under actual stress state by precisely regulating the pre-tightening force, and the staff can more accurately evaluate the durability and mechanical properties of the concrete test piece 2 under different pre-tightening force conditions, thereby providing more reliable basis for the application in actual engineering.
[0031] In addition, the solution tank 3 and the test device are connected through the drainage system 4 to establish a liquid circulation mechanism, ensuring the continuity and effectiveness of the test process, and the utility model effectively solves the problem of being unable to accurately predict the long-term durability of concrete.
[0032] Preferably, the solution is a sulfate solution.
[0033] In the structure, a plurality of support plates 11 include a first steel plate 111 and a second steel plate 112, the first steel plate 111 is arranged at the bottom of the second steel plate 112, the first steel plate 111 and the second steel plate 112 are arranged at intervals, and the concrete test piece 2 is arranged between the first steel plate 111 and the second steel plate 112. The combination process of the structure is: the first steel plate 111 is arranged on the fixed structure 12 through the connecting hole, the concrete test piece 2 is arranged at the top end of the first steel plate 111, the second steel plate 112 is arranged on the fixed structure 12 through the connecting hole, and the first steel plate 111 and the second steel plate 112 clamp the concrete test piece 2. Further, the area of the first steel plate 111 is a first area value, the area of the second steel plate 112 is a second area value, the first area value is less than the second area value, and the height value of the first steel plate 111 is greater than the height value of the second steel plate 112.
[0034] To clarify the specific structure of the support plate 11, a plurality of support plates 11 include a third steel plate 113, the third steel plate 113 is arranged at the top of the second steel plate 112, and the third steel plate 113 and the second steel plate 112 are arranged at intervals through the fixed structure 12. Further, the third steel plate 113 and the second steel plate 112 have the same structure.
[0035] In the utility model, still include spring 5, the spring 5 is sleeved on the fixed structure 12, the both ends of spring 5 are in contact with the second steel sheet 112 and the third steel sheet 113 respectively.Spring 5 is in close contact with the second steel sheet 112 and the third steel sheet 113, ensure that can provide elastic support when being stressed, can maintain the stability of structure, the spring 5 with the second steel sheet 112 and the third steel sheet 113 between have the high adjustability, can according to the concrete test piece 2 specific size size corresponding adjustment.
[0036] To make clear the specific setting of the fixed structure 12, the fixed structure 12 includes stud 121, first nut 122 and second nut 123, the bottom of stud 121 is fixed through first nut 122, the top of stud 121 is fixed through second nut 123.
[0037] To make clear the cooperation structure of the test device, the test device includes heating system 6, test box 7 and steel frame 8, the bottom end of steel frame 8 is arranged in test box 7, the top end of steel frame 8 is connected with the bottom of clamping device 1, heating system 6 is arranged between test box 7 and steel frame 8.Heating system 6 is used for heating in test box 7, reaches the effect of drying concrete test piece 2, test box 7 is used for receiving liquid discharged by solution tank 3, the liquid is used for testing concrete test piece 2, steel frame 8 is used for supporting clamping device 1.
[0038] In the utility model, the test device includes air circulator 9, the air circulator 9 is arranged at the top of test box 7, the air circulator 9 is provided with circulation port, one end of circulation port extends to clamping device 1 end, the other end of circulation port extends to test box 7 outside.Air circulator 9 is used for exhausting in test box 7, reaches the effect of drying concrete test piece 2.
[0039] In the structure, the liquid discharge system 4 includes first circulation pipe 41, circulating pump 42 and second circulation pipe 43, the both ends of circulating pump 42 are connected with one end of first circulation pipe 41 and one end of second circulation pipe 43 respectively, the other end of first circulation pipe 41 is arranged in solution tank 3, the other end of second circulation pipe 43 is arranged in test device.Liquid discharge system 4 circulates liquid in solution tank 3 and test device, solution tank 3, test device and liquid discharge system 4 not only meet the accurate control demand of liquid concentration for test, but also greatly improve the utilization efficiency of resources.
[0040] The implementation process of the device is: the liquid in the solution tank 3 is discharged into the test tank 7 through the first circulating pipe 41, the circulating pump 42 and the second circulating pipe 43, the liquid submerges the concrete test piece 2, and the concrete test piece 2 is soaked. After the preset soaking time is reached, the liquid is discharged into the solution tank 3, the air circulator 9 and the heating system 6 are started to exhaust and heat the test tank 7, and the concrete test piece 2 reaches the drying effect. The concrete test piece 2 is taken out for subsequent test analysis.
[0041] The above is only the preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.
[0042] The above is only the preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.
[0042] The above is only the preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A device for detecting resistance to sulfate cycles of concrete, characterized in that, The utility model relates to a concrete test device, which comprises a clamping device (1) arranged in a test device, the bottom of the clamping device (1) is connected with the test device, the clamping device (1) comprises a plurality of support plates (11) and a fixing structure (12), the fixing structure (12) is vertically arranged along the height direction of the test device, a plurality of the support plates (11) are provided with connecting holes, a plurality of the support plates (11) are connected with the fixing structure (12) through the connecting holes, a plurality of the support plates (11) are arranged at intervals, and a concrete test piece (2) is arranged between two adjacent support plates (11). A solution tank (3) is connected with the side of the test device, and the liquid in the solution tank (3) enters the test device through a drainage system (4). The plurality of support plates (11) comprise a first steel plate (111) and a second steel plate (112), the first steel plate (111) is arranged at the bottom of the second steel plate (112), the first steel plate (111) and the second steel plate (112) are arranged at intervals, and the concrete test piece (2) is arranged between the first steel plate (111) and the second steel plate (112).
2. The concrete sulfate resistance cycling test apparatus of claim 1, wherein The area of the first steel plate (111) is a first area value, the area of the second steel plate (112) is a second area value, the first area value is smaller than the second area value, and the height value of the first steel plate (111) is greater than the height value of the second steel plate (112).
3. The concrete sulfate resistance cycling test apparatus of claim 2, wherein, The plurality of support plates (11) comprise a third steel plate (113), the third steel plate (113) is arranged at the top of the second steel plate (112), and the third steel plate (113) and the second steel plate (112) are arranged at intervals through the fixing structure (12).
4. The concrete sulfate resistance cycling test apparatus of claim 2, wherein A spring (5) is further arranged on the fixing structure (12), and the two ends of the spring (5) are in contact with the second steel plate (112) and the third steel plate (113) respectively.
5. The concrete sulfate resistance cycling test apparatus of claim 4, wherein, The third steel plate (113) has the same structure as the second steel plate (112).
6. The concrete sulfate resistance cycling test apparatus of claim 4, wherein The fixing structure (12) comprises a threaded stud (121), a first nut (122) and a second nut (123), the bottom of the threaded stud (121) is fixed through the first nut (122), and the top of the threaded stud (121) is fixed through the second nut (123).
7. The concrete sulfate resistance cycling test apparatus of claim 1, wherein The test device comprises a heating system (6), a test box (7) and a steel frame (8), the bottom end of the steel frame (8) is arranged in the test box (7), the top end of the steel frame (8) is connected with the bottom of the clamping device (1), and the heating system (6) is arranged between the test box (7) and the steel frame (8).
8. The concrete sulfate resistance cycling test apparatus of claim 1, wherein, The test device comprises an air circulator (9), the air circulator (9) is arranged at the top of the test box (7), the air circulator (9) is provided with a circulating port, one end of the circulating port extends to the clamping device (1), and the other end of the circulating port extends out of the test box (7).
9. The concrete sulfate resistance cycling test apparatus of claim 8, wherein, 10. The concrete sulfate resistance cycling test apparatus of claim 1, wherein, The liquid drainage system (4) comprises a first circulation pipe (41), a circulation pump (42) and a second circulation pipe (43), two ends of the circulation pump (42) are connected with one end of the first circulation pipe (41) and one end of the second circulation pipe (43) respectively, the other end of the first circulation pipe (41) is arranged in the solution tank (3), and the other end of the second circulation pipe (43) is arranged in the test device.