Bacteria erosion device for evaluating effectiveness of concrete antibacterial agent
By designing a bacterial erosion device, the problems of long evaluation cycle of concrete antibacterial agents and inaccurate test results are solved, and fast and accurate antibacterial agent screening is achieved, experimental operations are simplified, external interference is reduced, and the safety and accuracy of the test is improved. sex.
Patent Information
- Application Number
- CN202420891342.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The prior art is difficult to quickly and accurately evaluate the effectiveness of concrete antibacterial agents, and traditional methods have problems such as inconsistent with the concrete structure and high maintenance costs. The lack of special tools leads to a long experimental cycle, which affects the accuracy of the test results.
Design a bacterial erosion device, including the main container, inner cover, outer cover and hanging clip, providing safe and breathable passage through the air chamber, filter membrane and breathable holes, ensuring that the concrete specimens are stably immersed in the bacterial solution and through the hanging clip Achieve continuous suspension support of the specimen, reduce external interference, use a non-toxic sulfur source to replace toxic hydrogen sulfide gas, and simplify experimental operations.
The device accelerates the concrete antibacterial evaluation process, shortens the evaluation cycle, can obtain relevant results within one month, improves the accuracy and safety of the test, reduces external interference, and helps quickly determine the most effective antibacterial formulation.
Smart Images
Figure CN222274523U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of concrete testing tools, and in particular relates to a bacterial erosion device for evaluating the effectiveness of concrete antibacterial agents. Background Art
[0002] Microbiologically induced corrosion of concrete (MICC) has become a prominent problem in the construction and maintenance of concrete structures. The problem stems from the metabolic activities of certain microorganisms, which lead to the degradation of concrete quality. The acidic compounds produced by these microorganisms severely corrode concrete, causing a series of problems, including increased maintenance costs, impaired structural integrity, and potential safety hazards. Studies have found that the development of MICC is closely related to sulfur-oxidizing bacteria (SOB), which are widely found in narrow and humid soil and concrete environments, especially sewer environments. These acidophilic bacteria, including Thiobacillus and Acidithiobacillus, produce inorganic acids through metabolism, reducing the pH value of the surrounding environment to below 3, creating a highly acidic environment that is extremely destructive to concrete. The acidic environment causes the hydration products of traditional silicate cementitious matrix (such as hydrated calcium silicate and calcium hydroxide) to decalcify and decompose, losing their original cementitious properties. This leads to weakened cohesion and microscopic cracking of concrete, further exacerbating the deterioration of concrete. In response to the problem of bacterial erosion of sewer concrete, spraying antimicrobial agents on the concrete surface or coating epoxy resin has long been used to prevent and control it. However, due to the long-term exposure of concrete to the external environment, the antibacterial agent and epoxy resin layer are prone to peeling off, resulting in short-lived antibacterial effect and high maintenance costs.
[0003] At present, there is also a technology to improve the antibacterial properties of concrete by adding antibacterial ingredients. However, there are still some shortcomings. For example, the direct addition of antibacterial agents containing silver and copper ions fails to achieve the effect of slowly releasing effective antibacterial ions; chitosan-based antibacterial agents and gelatin and husk powder-based corrosion inhibitors have compatibility issues with concrete and related problems of inconsistency between the service life of antibacterial agents and concrete structures. However, due to the lack of standardized procedures and related special tools for evaluating the antibacterial effects of such concrete antibacterial agents, it takes more than one year of long-term observation to evaluate the performance of antibacterial concrete in actual sewer environments, which puts a time test on related research. At present, there is no special screening tool that can speed up the antibacterial agent in the laboratory environment. After the concrete specimen is operated according to the predetermined requirements of the test, it needs to be taken out and cut separately. From erosion to cutting, it is easy to contact other external substances and affect the accuracy of the test results. There is a lack of matching tools that are conducive to concrete segmentation in the continuous operation from erosion to cutting. Utility Model Content
[0004] In order to solve the problems mentioned in the above background technology, the purpose of the utility model is to provide a bacterial erosion device for evaluating the effectiveness of concrete antibacterial agents.
[0005] The utility model discloses a bacterial erosion device for evaluating the effectiveness of an antibacterial agent for concrete, comprising a main body container, an inner cover body, an outer cover body and two hanging clips, wherein the top end of the main body container is an open end, the inner cover body is detachably connected to the open end of the main body container, two hanging clips are detachably connected to the bottom surface of the inner cover body, a concrete test piece is arranged between the two hanging clips, a bacterial solution is arranged in the main body container, the bottom end of the concrete test piece is arranged in the bacterial solution, the outer cover body comprises a main cover body, an inner liner sleeve and a filter membrane, the main cover body is a circular cover body, an inner liner sleeve is coaxially arranged in the main cover body, an inner wall of the inner liner sleeve and an inner wall of the top of the main cover body are enclosed to form an air cavity, the inner cover body is processed with a plurality of air holes along the thickness direction thereof, the bottom of the air cavity is connected with the inside of the main body container through the plurality of air holes, the top of the main cover body is processed with a central hole along the thickness direction thereof, a filter membrane is arranged in the central hole, and the top of the air cavity is connected with the outside through the filter membrane.
[0006] As a preferred solution, both hanging clamps are splitting-assisting hanging clamps, each hanging clamp includes a main connecting plate, a flexible outer connecting plate, two top connecting plates and four connecting ropes, the main connecting plate is fixedly connected to the outer wall of the concrete specimen, a flexible outer connecting plate is arranged on the outer wall of the main connecting plate, two top connecting plates are vertically arranged on the top of the main connecting plate, and two connecting ropes are correspondingly arranged on each top connecting plate, the lower end of each connecting rope is fixedly connected to its corresponding top connecting plate, and the upper end of each connecting rope is detachably connected to the bottom surface of the inner cover body.
[0007] Compared with the prior art, the beneficial effects of the utility model are:
[0008] The utility model provides a special matching structure for promoting the entire erosion process of the concrete specimen through the main container, the inner cover body, the outer cover body and the two hanging clamps. The utility model is a bacterial corrosion device operated in the middle link. The utility model can not only ensure that the bottom of the concrete specimen is stably immersed in the bacterial solution, but also provide a safe and good ventilation channel for corrosion through the mutual cooperation between the air cavity, the filter membrane and the air permeable holes, which is beneficial to the gas exchange between the bacterial solution in the main container and the outside world, and can also prevent external bacteria from entering the main container, thereby reducing the adverse interference of the outside world on the erosion process.
[0009] The matching structure of the air cavity and the main container in the utility model is conducive to the filling of the sulfur source. The sulfur source used in the utility model is non-toxic sulfur (S0), which provides energy for the sulfur oxidizing bacteria in the bacterial solution in the main container, thereby reducing the safety problem of using toxic hydrogen sulfide gas as a reducing sulfur source.
[0010] In the utility model, the inner cover body, the two hanging clamps and the concrete specimen cooperate to form a continuous suspension support effect for the concrete specimen to the concrete test block after cutting, which is beneficial to the probability of the concrete specimen contacting with external substances during the process of the concrete specimen to the concrete test block after cutting, and is beneficial to the intuitive, accurate and stable acquisition process of subsequent cutting and verification of erosion thickness related data.
[0011] The use of the utility model speeds up the evaluation process of various antimicrobial agents in concrete. The utility model can obtain relevant results on the effectiveness of concrete antimicrobial agents within one month. Compared with the existing field evaluation which usually takes more than one year, the evaluation cycle is shortened, which helps to quickly determine the most effective antimicrobial agent in the concrete formula. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] For ease of explanation, the present invention is described in detail by the following specific embodiments and drawings.
[0013] Figure 1 A three-dimensional structural schematic diagram of the connection relationship between the main container, the inner cover, the concrete specimen and the two hanging clamps;
[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model, in which no bacterial solution is injected;
[0015] Figure 3 Another three-dimensional structural schematic diagram of the connection relationship between the main container, the inner cover, the concrete test piece and the two hanging clamps, in which an annular slot matching the inner liner is processed on the top surface of the inner cover;
[0016] Figure 4 It is a schematic diagram of the structure of the outer cover body when viewed from above;
[0017] Figure 5 It is a schematic diagram of the main structure of the connection relationship between the concrete specimen and the two hanging clamps;
[0018] Figure 6 It is a rear view structural schematic diagram of the connection relationship between the concrete specimen and the two hanging clamps;
[0019] Figure 7 It is a schematic diagram of the main structure of the connection relationship between the concrete specimen, two hanging clamps and two scale bars;
[0020] Figure 8 A side structural schematic diagram of the connection relationship between the connecting rope, the connecting plate and the top connecting piece;
[0021] Fig. 9 It is a schematic diagram of the structure of the inner cover body when viewed from above;
[0022] Fig.10 It is a schematic diagram of the main structure of the built-in connector;
[0023] Fig.11 It is a schematic diagram of the main structure of the connection relationship between the built-in connecting piece, the connecting plate, the connecting rope, the top connecting piece and the main connecting piece;
[0024] Fig.12 Schematic diagram of the connection process between the hanging clamp and the cut concrete test block, in which the arrow near the insertion sleeve in the cut concrete test block indicates the uncovering direction of one end of the flexible outer connecting piece, and the arrow away from the insertion sleeve in the cut concrete test block indicates the rotation direction of the flexible outer connecting piece, and the other end of the flexible outer connecting piece near the arrow is fixedly connected to the main connecting piece;
[0025] Fig.13 It is a three-dimensional structural schematic diagram of the utility model when used in conjunction with a temperature-controlled shaking table.
[0026] In the figure: 1-main container; 2-inner cover; 3-outer cover; 3-1-main cover; 3-2-inner sleeve; 3-3-filter membrane; 4-hanging clamp; 4-1-main connecting piece; 4-2-flexible outer connecting piece; 4-3-top connecting piece; 4-4-connecting rope; 4-5-threading sleeve; 5-air cavity; 6-air vent; 7-center hole; 8-bacterial solution; 9-annular slot; 10-concrete specimen; 11-connecting plate; 12-temperature-controlled shaker; 13-scale bar; 14-built-in connector; 14-1-upper plate; 14-2-vertical plate; 14-3-lower plate; 15-concrete specimen after cutting. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in the utility model, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects that can be produced by the utility model and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.
[0028] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.
[0029] Specific implementation method 1: Combination Figures 1 to 13 The present embodiment is described. The erosion device in the present embodiment comprises a main body container 1, an inner cover body 2, an outer cover body 3 and two hanging clips 4. The main body container 1 is a cylindrical container, the bottom end of which is a sealed end, and the top end of the main body container 1 is an open end. The main body container 1 is specifically a glass container. The inner cover body 2 is detachably connected to the open end of the main body container 1, so as to facilitate the subsequent removal of the inner cover body 2 and the removal of the concrete specimen 10. Two hanging clips 4 are detachably connected to the bottom surface of the inner cover body 2. The hanging clips 4 are used to position the concrete specimen 10. The concrete specimen 10 is a cylindrical specimen. A concrete specimen 10 is arranged between the two hanging clips 4. Both of the two hanging clips 4 are arc-shaped enclosed clamping bodies. The inner wall of the arc-shaped enclosed clamping body is fixedly connected to the concrete specimen 10. It can be connected without loss by bonding, or it can be connected to the concrete specimen 10 by inserting a nail body. The two hanging clips 4 are enclosed on the outer wall of the concrete specimen 10. The end gaps of the two hanging clips 4 are set. The gaps formed are used to expose the outer wall of the concrete specimen 10, which is conducive to providing a cutting position without removing the hanging clips 4 in the future, and is convenient for realizing continuous clamping and fixing of the concrete specimen 10. The main container 1 is provided with a bacterial solution 8 to provide an erosion environment for the concrete specimen 10. The bottom end of the concrete specimen 10 is immersed in the bacterial solution 8. The immersion depth of the concrete specimen 10 is at least one-third of its own height, thereby ensuring the effectiveness of the erosion. The outer cover 3 is a circular double-layer cover. The outer cover 3 includes a main cover 3-1, an inner liner 3-2 and a filter membrane 3-3. The main cover 3-1 is a cylindrical cover with an open end at the lower end. The inner liner 3-2 is coaxially arranged in the main cover 3-1. The inner liner 3-2 forms a filter membrane. Longitudinal support height, the inner wall of the inner sleeve 3-2 and the inner wall of the top of the main cover body 3-1 enclose an air cavity 5, the air cavity 5 provides a stable air intake space for ventilation, the inner cover body 2 is processed with a plurality of air holes 6 along its thickness direction, the bottom of the air cavity 5 is connected with the interior of the main container 1 through a plurality of air holes 6, the top of the main cover body 3-1 is processed with a center hole 7 along its thickness direction, a filter membrane 3-3 is arranged in the center hole 7, the filter membrane 3-3 provides an external filtering structure for the penetration of clean air, and the top of the air cavity 5 is connected with the outside through the filter membrane 3-3.
[0030] Furthermore, the structure of the outer cover body 3 can simultaneously achieve a double-layer sealing effect. When the outer cover body 3 is buckled on the main container 1, the inner wall of the inner sleeve 3-2 of the outer cover body 3 is clamped with the outer circumferential wall of the inner cover body 2, and the inner wall of the main cover body 3-1 of the outer cover body 3 is clamped with the outer wall of the main container 1, thereby forming a test environment that is conducive to the erosion process of the concrete specimen 10.
[0031] Furthermore, the bacterial solution 8 is an existing bacterial solution, 10% of the volume of the bacterial solution 8 is replaced with fresh culture medium every week, and samples of the bacterial solution 8 are taken every week for bacterial concentration testing, and the testing principle is the existing bacterial concentration testing principle.
[0032] Furthermore, the utility model needs to be sterilized by ultraviolet light as a whole before testing, and the main container 1, the inner cover 2, the outer cover 3, the two hanging clips 4 and the concrete specimen 10 all need to be sterilized by ultraviolet light before testing.
[0033] Specific implementation method two: This implementation method is a further limitation of specific implementation method one. In this implementation method, both of the two hanging clamps 4 are splitting-assisting hanging clamps, which can not only achieve the clamping and positioning effect of the concrete specimen 10 during the erosion process, but also provide a continuous positioning effect without changing parts during subsequent cutting operations, reducing the probability of accidental contact of the external environment and external substances with the concrete specimen 10. Each hanging clamp 4 includes a main connecting piece 4-1, a flexible external connecting piece 4-2, two top connecting pieces 4-3 and four connecting ropes 4-4. The main connecting piece 4-1 is fixedly connected to the outer wall of the concrete specimen 10. The main connecting piece 4-1 is a hard supporting piece used to directly connect to the outer wall of the concrete specimen 10. The outer wall of the main connecting piece 4-1 is provided with a flexible external connecting piece 4-2. The flexible external connecting piece 4-3 is provided with a flexible external connecting piece 4-4. The sheet 4-2 is an elastic metal sheet or other existing wear-resistant cloth sheet with flexible properties. Two top connecting sheets 4-3 are vertically arranged on the top of the main connecting sheet 4-1. Two connecting ropes 4-4 are correspondingly arranged on each top connecting sheet 4-3. The connecting rope 4-4 is a metal wire, an existing polypropylene rope or a high-strength fiber rope that can bear a large load. The lower end of each connecting rope 4-4 is fixedly connected to its corresponding top connecting sheet 4-3. The top connecting sheet 4-3 and the main connecting sheet 4-1 are on the same vertical arc surface and do not block the flexible outer connecting sheet 4-2, which is conducive to the smooth expansion and enclosure action of the flexible outer connecting sheet 4-2. The upper end of each connecting rope 4-4 is detachably connected to the bottom surface of the inner cover body 2, so that the subsequent connecting rope 4-4 can pull and drive the concrete specimen 10 to move to the cutting position.
[0034] Furthermore, the cooperation between the two hanging clamps 4 can realize eight-line circumferential suspension support for the concrete test block 10 in the erosion process. When the concrete test block 10 is longitudinally cut, the concrete test block 10 forms two cut concrete test blocks 15, and each cut concrete test block 15 can also realize stable support of four connecting ropes 4-4 through the hanging clamps 4 connected thereto.
[0035] Specific implementation method three: This implementation method is a further limitation of specific implementation methods one or two. A connecting sleeve 4-5 that matches the flexible outer connecting piece 4-2 is provided on the outer wall of one end of the main connecting piece 4-1. The connecting sleeve 4-5 provides an end fixed insertion position for the concrete test block 15 after the flexible outer connecting piece 4-2 is expanded and enclosed and cut. The connecting sleeve 4-5 is fixedly connected to the main connecting piece 4-1 on one side close to the flexible outer connecting piece 4-2, and the other side of the connecting sleeve 4-5 is a movable side for subsequent insertion. The shape of the concrete test block 15 after cutting is a semi-cylinder. When the concrete test piece When the concrete specimen 10 is in the infiltration state, the inner wall of the flexible outer connecting piece 4-2 is attached to the outer wall of the main connecting piece 4-1. When the concrete specimen 10 is in the cutting state, one end of the flexible outer connecting piece 4-2 is fixedly connected to the outer wall of the main connecting piece 4-1, and the other end of the flexible outer connecting piece 4-2 bypasses the cutting surface of the concrete specimen 10 and is connected to the connecting sleeve 4-5, thereby realizing the circumferential positioning and wrapping of the concrete specimen 15 after cutting, forming a suspended circumferential stabilization process of the concrete specimen 15 after cutting, which is beneficial to reducing the probability of the bottom of the concrete specimen 15 after cutting contacting with external substances.
[0036] Specific embodiment four: This embodiment is a further limitation of specific embodiments one, two or three. The main container 1 is a cylindrical container, and the inner cover body 2 and the outer cover body 3 are both circular cover bodies. An annular slot 9 that cooperates with the inner sleeve 3-2 is processed on the top surface of the inner cover body 2, and the bottom of the inner sleeve 3-2 is plugged into the annular slot 9.
[0037] Combination Figure 3 As shown, one form of the annular slot 9 is a wide half slot, and correspondingly, the top of the inner cover body 2 is formed in the form of a boss, and the outer wall of the boss is used to clamp the inner wall of the inner sleeve 3-2 to provide an annular structure position.
[0038] Combination Fig. 9 As shown, another form of the annular slot 9 is a narrow groove body, and correspondingly, the top of the inner cover body 2 forms an annular groove structure, and the inner walls on both sides of the groove body in the annular groove structure are used to provide a position for inserting the inner sleeve 3-2.
[0039] Specific implementation mode five: This implementation mode is a further limitation of specific implementation modes one, two, three or four. The shape of the main connecting piece 4 - 1 is matched with the shape of the outer wall of the concrete specimen 10 .
[0040] Specific implementation method 6: This implementation method is a further limitation of specific implementation methods 1, 2, 3, 4 or 5. Fig. 9 and Fig.10As shown, four built-in connectors 14 are arranged at the bottom of the inner cover body 2. One matching mode of the built-in connectors 14 is: a built-in connector 14 is correspondingly arranged above each main connecting piece 4-1, and the built-in connector 14 is an I-shaped connector. The built-in connector 14 includes an upper plate 14-1, a vertical plate 14-2 and a lower plate 14-3. The upper plate 14-1 and the lower plate 14-3 are arranged horizontally and side by side from top to bottom, and the vertical plate 14-2 is vertically arranged between the upper plate 14-1 and the lower plate 14-3. The inner wall of one side of the vertical plate 14-2, the bottom surface of the upper plate 14-1 and the top surface of the lower plate 14-3 are enclosed to form an adapter connection rope. The inner wall of the other side of the vertical plate 14-2, the bottom surface of the upper plate 14-1 and the top surface of the lower plate 14-3 enclose another insertion position for the connection rope 4-4. The lower plate 14-3 provides a position for connecting with the connection rope 4-4. The length of the upper plate 14-1 is less than the length of the lower plate 14-3. The purpose is to provide a connection position with a larger length for the arrangement of the connection rope 4-4. The upper ends of the two connection ropes 4-4 on each main connecting piece 4-1 are detachably connected to the bottom of the built-in connector 14. The purpose of such a setting is to facilitate the movement of the concrete specimen 10 after disassembly for subsequent longitudinal cutting and testing. The setting of the built-in connector 14 can not only provide a connection position for the connection rope 4-4, but also have no effect on the position of the air vent 6, avoid grooving damage to the inner cover body 2, and reduce drilling damage to the inner cover body 2.
[0041] Specific implementation method 7: This implementation method is a further limitation of specific implementation methods 1, 2, 3, 4, 5 or 6. Fig. 9 , Fig.10 and Fig.11As shown, a built-in connector 14 is correspondingly arranged above each main connecting piece 4-1, and four built-in connectors 14 are arranged at the bottom of the inner cover body 2. Another matching mode of the built-in connector 14 is: a built-in connector 14 is correspondingly arranged above each main connecting piece 4-1, and the built-in connector 14 is an I-shaped connector. A connecting plate 11 is correspondingly arranged on the two connecting ropes 4-4 on each main connecting piece 4-1. The connecting plate 11 is detachably connected to the bottom of the built-in connector 14. The built-in connector 14 includes an upper plate 14-1, a vertical plate 14-2 and a lower plate 14-3. The upper plate 14-1 and the lower plate 14-3 are horizontally arranged in parallel from top to bottom, and the vertical plate 14-2 is vertically arranged on the upper plate 14-1 and Between the lower plate 14-3, the inner wall on one side of the vertical plate 14-2, the bottom surface of the upper plate 14-1 and the top surface of the lower plate 14-3 enclose a position for fitting the connecting screws, the inner wall on the other side of the vertical plate 14-2, the bottom surface of the upper plate 14-1 and the top surface of the lower plate 14-3 enclose another position for fitting the connecting screws, the lower plate 14-3 is connected to the connecting plate 11 by two connecting screws, the upper ends of the two connecting ropes 4-4 on the same main connecting plate 4-1 are fixedly connected to the connecting plate 11, and the built-in connector 14 provides a position for fitting the two connecting screws connected to the connecting plate 11, and the purpose of such a setting is to facilitate the movement of the concrete specimen 10 after disassembly for subsequent longitudinal cutting and testing. The setting of the built-in connector 14 has no effect on the position of the air vent 6, avoids slotting damage to the inner cover 2, reduces the damage to the inner cover 2 by punching, and can also provide a stable connection position for the connection of the connecting plate 11. When the concrete specimen 10 needs to be disassembled, it is only necessary to remove the connecting plate 11 from the built-in connecting part 14. The connecting plate 11 can also be convenient for subsequent fixing or clamping on an existing cutting machine. It is only necessary to longitudinally cut the outer wall of the concrete specimen 10 exposed between the two hanging clamps 4.
[0042] Specific embodiment eight: This embodiment is a further limitation of specific embodiments one, two, three, four, five or six, and the bottom of the main container 1 is provided with a temperature-controlled shaking table 12. The temperature-controlled shaking table 12 is an existing product and provides test-related conditions for the utility model.
[0043] Specific embodiment nine: This embodiment is a further limitation of specific embodiments one, two, three, four, five or six. A scale bar 13 is vertically arranged below each main connecting piece 4-1. The starting scale end of the scale bar 13 is arranged flush with the bottom end of the concrete specimen 10. The scale bar 13 is a flexible strip with scales, which is applied to the outer wall of the concrete specimen 10. The purpose is to achieve a process of obtaining intuitive data on the erosion depth after the erosion operation is completed, after the concrete specimen 10 is longitudinally cut and sprayed with phenolphthalein solution.
[0044] The working principle of this utility model:
[0045] After the concrete specimen 10 prepared according to the predetermined requirements is connected to the two hanging clips 4, the concrete specimen 10 is connected to the inner cover body 2 through the two hanging clips 4, the bacterial solution 8 of the predetermined test requirements is injected into the main container 1, the lower end of the concrete specimen 10 is immersed in the bacterial solution 8, and the concrete specimen 10 is continuously shaken in the temperature-controlled shaking table 12 to ensure that the concrete specimen 10 is eroded in the bacterial solution 8 for 4 weeks, and then the concrete specimen 10 with the two hanging clips 4 is taken out, and the position of the concrete specimen 10 exposed between the two hanging clips 4 is used as the cutting position, and after longitudinal cutting along the axial direction of the concrete specimen 10, the concrete specimen 10 forms two cut concrete specimens 15, and the straight surface of each cut concrete specimen 15 is the cutting surface, and the phenolphthalein solution is evenly sprayed on the cutting surface, and the purple part in the cutting surface is the part not eroded by bacteria, and the colorless part is the position of the erosion layer. It is conducive to the scale bar 13 to directly read the depth of the colorless part, which is the erosion depth of the concrete specimen 10.
Claims
1. A bacterial erosion device for evaluating the effectiveness of concrete antimicrobial agents, characterized in that: The invention comprises a main container (1), an inner cover (2), an outer cover (3) and two hanging clips (4); the top of the main container (1) is an open end; the inner cover (2) is detachably connected to the open end of the main container (1); two hanging clips (4) are detachably connected to the bottom surface of the inner cover (2); a concrete specimen (10) is arranged between the two hanging clips (4); a bacterial solution (8) is arranged in the main container (1); the bottom end of the concrete specimen (10) is arranged in the bacterial solution (8); the outer cover (3) comprises a main cover (3-1), an inner liner (3-2) and a filter membrane (3-3); the main cover (3-1) is an inner liner (3-2) and a filter membrane (3-3); the inner cover (2) is detachably connected to the open end of the main container (1); two hanging clips (4) are detachably connected to the bottom surface of the inner cover (2); a concrete specimen (10) is arranged between the two hanging clips (4); a bacterial solution (8) is arranged in the main container (1); the bottom end of the concrete specimen (10) is arranged in the bacterial solution (8); the outer cover (3) comprises a main cover (3-1), an inner liner (3-2) and a filter membrane (3-3); The cover body (3-1) is a circular cover body. An inner sleeve (3-2) is coaxially arranged inside the main cover body (3-1). The inner wall of the inner sleeve (3-2) and the inner wall of the top of the main cover body (3-1) enclose an air cavity (5). The inner cover body (2) is processed with a plurality of air holes (6) along its thickness direction. The bottom of the air cavity (5) is connected to the inside of the main container (1) through the plurality of air holes (6). The top of the main cover body (3-1) is processed with a center hole (7) along its thickness direction. A filter membrane (3-3) is arranged in the center hole (7). The top of the air cavity (5) is connected to the outside through the filter membrane (3-3).
2. A bacterial erosion device for evaluating the effectiveness of concrete antimicrobial agents according to claim 1, characterized in that: The two hanging clips (4) are both splitting-assisting hanging clips. Each hanging clip (4) comprises a main connecting piece (4-1), a flexible outer connecting piece (4-2), two top connecting pieces (4-3) and four connecting ropes (4-4). The main connecting piece (4-1) is fixedly connected to the outer wall of the concrete specimen (10). The flexible outer connecting piece (4-2) is arranged on the outer wall of the main connecting piece (4-1). The two top connecting pieces (4-3) are vertically arranged on the top of the main connecting piece (4-1). Two connecting ropes (4-4) are correspondingly arranged on each top connecting piece (4-3). The lower end of each connecting rope (4-4) is fixedly connected to its corresponding top connecting piece (4-3). The upper end of each connecting rope (4-4) is detachably connected to the bottom surface of the inner cover body (2).
3. A bacterial erosion device for evaluating the effectiveness of concrete antimicrobial agents according to claim 2, characterized in that: A connecting sleeve (4-5) matching with the flexible outer connecting sheet (4-2) is arranged on the outer wall of one end of the main connecting sheet (4-1); when the concrete specimen (10) is in an infiltrated state, the inner wall of the flexible outer connecting sheet (4-2) is attached to the outer wall of the main connecting sheet (4-1); when the concrete specimen (10) is in a cut state, one end of the flexible outer connecting sheet (4-2) is fixedly connected to the outer wall of the main connecting sheet (4-1), and the other end of the flexible outer connecting sheet (4-2) bypasses the cut surface of the concrete specimen (10) and is connected to the connecting sleeve (4-5).
4. A bacterial erosion device for evaluating the effectiveness of concrete antimicrobial agents according to claim 1, characterized in that: The main container (1) is a cylindrical container, the inner cover body (2) and the outer cover body (3) are both circular cover bodies, an annular slot (9) matched with the inner liner (3-2) is processed on the top surface of the inner cover body (2), and the bottom of the inner liner (3-2) is plug-connected with the annular slot (9).
5. A bacterial erosion device for evaluating the effectiveness of concrete antimicrobial agents according to claim 2, characterized in that: The shape of the main connecting piece (4-1) is matched with the shape of the outer wall of the concrete test piece (10).
6. A bacterial erosion device for evaluating the effectiveness of concrete antibacterial agents according to claim 2 or 5, characterized in that: A built-in connecting piece (14) is correspondingly arranged above each main connecting piece (4-1), the built-in connecting piece (14) being an I-shaped connecting piece, and the upper ends of the two connecting ropes (4-4) on each main connecting piece (4-1) are detachably connected to the bottom of the built-in connecting piece (14).
7. A bacterial erosion device for evaluating the effectiveness of concrete antibacterial agents according to claim 2 or 5, characterized in that: A built-in connecting piece (14) is correspondingly arranged above each main connecting piece (4-1), the built-in connecting piece (14) being an I-shaped connecting piece, and a connecting plate (11) is correspondingly arranged for the two connecting ropes (4-4) on each main connecting piece (4-1), the connecting plate (11) being detachably connected to the bottom of the built-in connecting piece (14).
8. The bacterial erosion device for evaluating the effectiveness of concrete antibacterial agents according to claim 1, characterized in that: A temperature-controlled shaking table (12) is provided at the bottom of the main container (1).
9. The bacterial erosion device for evaluating the effectiveness of concrete antimicrobial agents according to claim 2, characterized in that: A scale bar (13) is vertically arranged below each main connecting piece (4-1), and the starting scale end of the scale bar (13) is arranged flush with the bottom end of the concrete test piece (10).