A test device for the repair effect of microbial self-healing concrete cracks

Abstract

The invention discloses a device for testing the repair effect of microbial self-healing concrete cracks, relates to the technical field of self-healing concrete, comprises a self-healing concrete crack specimen and a water inlet trough, and also comprises a side trough, the top of which is fixedly provided with a connecting rod, the top of the connecting rod is fixedly provided with the outside of the water inlet trough, the bottom of the side trough is fixedly provided with a filter plate, the bottom of the filter plate is fixedly provided with a water collecting trough, and the bottom of the side of the water collecting trough is provided with a discharge port; the bottom of the water inlet trough is configured as a rubber sealing ring, the left and right sides of the side trough are configured as inclined, a triangular plate is fixedly provided at one end of the side trough close to the surface of the self-healing concrete crack specimen, and the repair effect of the self-healing concrete crack is demonstrated by directly performing a penetration test on the side leakage part, so that the permeability test is used to reflect the repair effect, and the influence of the side leakage on the penetration test effect during the penetration process can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of self-healing concrete, and in particular to a device for testing the repair effect of microbial self-healing concrete cracks. Background Art

[0002] Self-healing concrete is an innovative material with self-healing ability. It can repair micro cracks or minor damage through its own mechanism and extend the service life of concrete structures. This material is usually mixed into concrete using micro-cementitious materials (such as microcapsules, microfibers, etc.). When cracks occur in concrete, these micro-cementitious materials can release fillers to fill the cracks, thereby preventing the cracks from expanding and slowing down the damage to the concrete structure. The research and development and application of self-healing concrete are of great significance to improving the durability and reliability of concrete structures. It can reduce the penetration of moisture, oxygen and other harmful substances caused by cracks in concrete structures, reduce maintenance costs, extend service life, and reduce environmental impact. In addition, self-healing concrete also helps to improve the safety and durability of concrete structures, especially in infrastructure construction and important buildings. It has potential for wide application prospects. The penetration test of self-healing concrete is to evaluate the durability of its crack repair effect. By testing the penetration performance of concrete materials, it can provide a scientific basis for engineering design and application to ensure the long-term stability and safety of concrete structures.

[0003] In the prior art, the detection of concrete crack repair effect is mostly based on the water pressure penetration test method, that is, by applying water pressure to the crack, observing whether there is water seepage at the other end of the concrete specimen, and the amount of water seepage, the repair effect of the concrete crack is judged based on the permeability test data. However, during the test, it was found that if the crack to be repaired exists at the edge of the concrete specimen, side leakage is usually inevitable, which directly interferes with the accuracy and credibility of the test results, and seriously affects the effectiveness of the concrete crack repair evaluation. Summary of the invention

[0004] The purpose of the present invention is to provide a testing device for the repair effect of microbial self-healing concrete cracks, so as to solve the problem that the above-mentioned side leakage phenomenon may affect the penetration result.

[0005] The present invention is achieved through the following technical solutions:

[0006] A microbial self-healing concrete crack repair effect testing device, comprising a self-healing concrete crack test piece and a water inlet tank, and also comprising:

[0007] A side trough, a connecting rod is fixedly installed on the top of the side trough, the top of the connecting rod is fixedly installed on the outside of the water inlet trough, a filter plate is fixedly installed on the bottom of the side trough, a water collecting trough is fixedly installed on the bottom of the filter plate, and a discharge port is provided on the bottom of the side of the water collecting trough;

[0008] The bottom of the water inlet groove is set to be in the shape of a rubber sealing ring, the left and right sides of the side groove are set to be inclined, and a triangular plate is fixedly installed at one end of the side groove close to the surface of the self-healing concrete crack specimen. By directly performing a penetration test on the side leakage part, the permeability test is achieved to reflect the repair effect, and at the same time, the influence of side leakage on the penetration test effect during the penetration process can be avoided.

[0009] Furthermore, a slag removal mechanism is provided in the side groove, and the slag removal mechanism includes a drainage groove, and the drainage groove is fixedly installed at one end of the side groove away from the self-healing concrete crack specimen. A blocking plate is slidably installed at the water outlet of the drainage groove, and a push plate is slidably installed on the upper surface of the filter plate. The initial position of the push plate is located outside the triangular plate and is fitted thereto. A pull rod is penetrated and slidably installed on the side groove, which can very conveniently clean impurities on the filter plate, which is simple and efficient.

[0010] Furthermore, one end of the pull rod is fixedly installed on the outside of the push plate, and the other end of the pull rod is arranged on the outside of the side groove. A magnetic rod is fixedly installed on the outside of the push plate. A plug hole is opened on the blocking plate at the same horizontal position as the magnetic rod. The width of one end of the blocking plate located outside the side groove is greater than the width at the water outlet of the drainage groove. A collecting groove is fixedly installed on the outside of the side groove. Since the blocking plate is adsorbed by the magnetic rod through magnetic attraction, the blocking plate will not fall off after it is separated from the drainage groove, and the impurities pushed out by the push plate will enter the collecting groove and be collected.

[0011] Furthermore, a vibration mechanism is provided on the side groove, and the vibration mechanism includes a guide plate, and the guide plate is fixedly installed on the inclined surfaces on the left and right sides of the side groove, and the guide plate is arranged in an inclined state. A rotating rod is rotatably installed on the top of the push plate, and a fixed rod is fixedly installed on the top of the rotating rod. A round ball is rotatably installed outside the fixed rod, and the fixed rod is arranged inside the round ball to prevent the water flow from moving slowly when it is not aggregated and adhering to the left and right surfaces of the side groove and being difficult to move, thereby improving the collection efficiency of the side leakage water flow and thereby improving the test accuracy.

[0012] Furthermore, a bent rod is rotatably installed on the outside of the rotating rod, an elastic element is provided between the outside of the rotating rod and the top of the push plate, the bottom of the bent rod is set to a spherical shape, an elastic element is provided between the outside of the bent rod and the outside of the rotating rod, a circular groove is opened on the push plate, and the spherical end of the bottom of the bent rod is arranged close to the outside of the circular groove. Through the extrusion vibration of the bottom of the bent rod and the circular groove, impurities can be prevented from passing through the upper surface of the push plate and falling behind the push plate, thereby improving the collection efficiency of impurities.

[0013] Furthermore, an auxiliary mechanism is also provided in the sphere, the auxiliary mechanism includes a ring, the ring is slidably sleeved on the outside of the fixed rod, an elastic element is provided between the outside of the ring and the outside of the fixed rod, semicircular protrusions are fixedly installed on both sides of the bottom of the sphere, the interior of the semicircular protrusion is hollow and the exterior forms an integrated structure with the sphere, which can shake off the water flow attached to the surface of the sphere due to the friction between the sphere and the guide plate, and the vibration generated by the semicircular protrusion can also promote the vibration of the guide plate, thereby improving the vibration efficiency.

[0014] Furthermore, a swing rod is rotatably installed at the bottom of the ring, and the bottom of the swing rod is set in a spherical shape. A rubber elastic rod is fixedly installed on the outside of the swing rod, and a drooping rod is fixedly installed on the bottom of the rubber elastic rod. The bottom of the drooping rod is set in a spherical shape, and a semicircular block is fixedly installed inside the sphere. The bottom of the drooping rod is set close to the top of the semicircular block, and a collision is formed between the drooping rod and the semicircular block, so that the sphere vibrates during rotation, promotes the falling of water attached to its surface, and improves its own vibration efficiency.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0016] 1. The present invention collects and records the test data of the side leakage of the self-healing concrete crack specimen, and uses the side leakage data as the result data of the permeability test to show the repair effect of the self-healing concrete crack. In this way, by directly performing a permeability test on the side leakage part, the permeability test can be used to reflect the repair effect, and at the same time, the influence of the side leakage on the permeability test effect during the permeation process can be avoided;

[0017] 2. The present invention provides a slag removal mechanism. When the push plate drives the magnetic rod to move to the insertion hole, the magnetic rod can push the plugging plate to the outside of the side groove through the insertion hole, thereby opening the water outlet of the drainage groove, so that the push plate can push the impurities out of the side groove through the water outlet of the drainage groove. After the plugging plate is pushed out by the magnetic rod and the push plate, the plugging plate is adsorbed by the magnetic rod through the magnetic attraction, so that the plugging plate will not fall after leaving the drainage groove, and the impurities pushed out by the push plate will enter the collection groove and be collected. It is simple and efficient, and the overall test efficiency of penetration is improved;

[0018] 3. The present invention, by setting a vibration mechanism, the ball will collide with the guide plate, causing the guide plate to vibrate, thereby promoting the flow of water near the guide plate, preventing the water flow from moving slowly when it is not aggregated and attaching to the left and right surfaces of the side groove and being difficult to move, thereby improving the collection efficiency of the side leakage water flow, and further improving the test accuracy. Through the extrusion vibration of the bottom of the bent rod and the circular groove, it can prevent impurities from passing through the upper surface of the push plate and falling behind the push plate, thereby improving the collection efficiency of impurities;

[0019] 4. The present invention is provided with an auxiliary mechanism. When the ring is swinging back and forth, the ring will drive the swing rod to follow the movement. When the swing rod follows the reciprocating movement, it will knock on the semicircular protrusion. The semicircular protrusion is knocked to generate vibration, which can shake off the water flow attached to the surface of the ball due to the friction between the ball and the guide plate. At the same time, the vibration generated by the semicircular protrusion can also promote the vibration of the guide plate, thereby improving the vibration efficiency.

[0020] 5. In the present invention, when the ball rotates, the ball will drive the semicircular block to rotate along with it, and the semicircular block will contact and rub against the bottom of the drooping rod. When the swing rod follows the movement of the ring to strike the semicircular protrusion, the rubber elastic rod will push the drooping rod to move downward, so that a collision is formed between the drooping rod and the semicircular block, so that the ball vibrates during the rotation process, promotes the falling of water attached to its surface, and improves its own vibration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0022] Figure 1 It is a schematic diagram of the overall external structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the local structure of the side groove from the outside;

[0024] Figure 3 It is a schematic diagram of the external local structure of the side groove when looking down;

[0025] Figure 4 It is a schematic diagram of the external partial structure of the drainage trough;

[0026] Figure 5 This is a schematic diagram of the external structure of the plugging plate;

[0027] Figure 6 It is a schematic diagram of the external partial structure of the push plate;

[0028] Figure 7 It is a schematic diagram of the external local structure of the rotating rod;

[0029] Figure 8 It is a schematic diagram of the partial cross-sectional structure inside the sphere.

[0030] The reference numerals represent: 1-self-healing concrete crack specimen, 2-water inlet trough, 3-connecting rod, 4-side trough, 5-filter plate, 6-water collecting trough, 7-triangular plate, 8-drainage trough, 9-blocking plate, 10-pull rod, 11-push plate, 12-magnetic rod, 13-jack, 14-collecting trough, 15-guide plate, 16-rotating rod, 17-ball, 18-bent rod, 19-circular groove, 20-fixing rod, 21-ring, 22-swing rod, 23-semicircular protrusion, 24-rubber elastic rod, 25-drooping rod, 26-semicircular block. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and drawings. The schematic implementation modes and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the actual development and use stage.

[0032] like Figures 1 to 8 As shown, this embodiment includes a self-healing concrete crack specimen 1 and a water inlet trough 2, and also includes:

[0033] The side trough 4 has a connecting rod 3 fixedly installed on its top, and the top of the connecting rod 3 is fixedly installed on the outside of the water inlet trough 2. The bottom of the side trough 4 is fixedly installed with a filter plate 5, and the bottom of the filter plate 5 is fixedly installed with a water collecting trough 6. The bottom of the side of the water collecting trough 6 is provided with a discharge port to facilitate the discharge of the water collected in the test, so as to facilitate the subsequent test;

[0034] The bottom of the water inlet groove 2 is set in a rubber sealing ring shape, which is convenient for forming a sealing state with the top connection of the self-healing concrete crack specimen 1 to prevent water leakage. The left and right sides of the side groove 4 are set in an inclined shape to facilitate the flow of water. A triangular plate 7 is fixedly installed at one end of the side groove 4 close to the surface of the self-healing concrete crack specimen 1. The triangular plate 7 can guide the water leaking from the side, so that the water on the surface of the self-healing concrete crack specimen 1 can flow to the filter plate 5;

[0035] In the above technical scheme, when the self-healing concrete crack specimen 1 is being made, the artificial crack is directly placed at the edge of the specimen, and the side leakage is used to collect and record the penetration data of the side leakage, so that the side leakage data is used as the data of the permeability test, which not only achieves the effect of the permeability test but also avoids the influence of the side leakage on the permeability test. First, the water inlet trough 2 is installed on the top of the self-healing concrete crack specimen 1 through the rubber sealing ring at the bottom. At this time, the water inlet trough 2 places the side trough 4 outside the side crack of the self-healing concrete crack specimen 1 through the connecting rod 3, and the side trough 4 is arranged to fit the surface of the self-healing concrete crack specimen 1. Then the permeability test can be started, and water is injected into the water inlet trough 2. The water flow can leak out through the side cracks of the self-healing concrete crack specimen 1, and the leaked water flow can pass through the inclined shapes on the left and right sides of the side trough 4. Or it flows directly on the filter plate 5, the filter plate 5 can filter out the concrete impurities mixed in the side leakage water flow, and the filtered water flow continues to flow downward into the sump 6. After the side leakage penetration test is completed, the staff will conduct data statistics based on the amount of water collected in the sump 6. After the statistics are completed, the test water flow will be discharged through the discharge port of the sump 6 to facilitate subsequent testing. Multiple groups of data can be used for statistics to improve accuracy. Finally, the test data of penetration of the side leakage part of the self-healing concrete crack specimen 1 is collected and recorded, and the side leakage data is used as the result data of the permeability test to show the repair effect of the self-healing concrete crack. In this way, by directly conducting a penetration test on the side leakage part, the permeability test is performed to reflect the repair effect, and at the same time, the influence of side leakage on the penetration test effect during the penetration process can be avoided.

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in the present invention, a slag removal mechanism is also provided, which includes a drainage trough 8, which is fixedly installed at one end of the side trough 4 away from the self-healing concrete crack specimen 1, a plugging plate 9 is slidably installed at the water outlet of the drainage trough 8, a push plate 11 is slidably installed on the upper surface of the filter plate 5, and the initial position of the push plate 11 is located outside the triangular plate 7 and is arranged in a close fit, a pull rod 10 is passed through and slidably installed on the side trough 4, one end of the pull rod 10 is fixedly installed outside the push plate 11, and the other end of the pull rod 10 is arranged outside the side trough 4, a magnetic suction rod 12 is fixedly installed outside the push plate 11, the plugging plate 9 is made of iron, steel and other materials that can be magnetically adsorbed, a plug hole 13 is opened on the plugging plate 9 at the same horizontal position as the magnetic suction rod 12, the width of the end of the plugging plate 9 located outside the side trough 4 is greater than the width at the water outlet of the drainage trough 8, so as to facilitate the separation of the plugging plate 9 from the magnetic suction rod 12, and a collecting trough 14 is fixedly installed outside the side trough 4;

[0037] In the above technical scheme, since the water leaking out from the side will be mixed with concrete impurities, the impurities are filtered through the filter plate 5. However, the filter plate 5 needs to be cleaned after each penetration test. It only needs to pull the pull rod 10 toward the outside of the side groove 4, and the pull rod 10 can drive the push plate 11 to follow and move. The push plate 11 can clean the impurities on the surface of the filter plate 5 and push the impurities to move in the direction of the drainage groove 8. At the same time, the push plate 11 will also drive the magnetic suction rod 12 to follow and move. When the push plate 11 drives the magnetic suction rod 12 to move to the socket 13, the magnetic suction rod 12 can push the blocking plate 9 to the outside of the side groove 4 through the socket 13, thereby opening the water outlet of the drainage groove 8, so that the push plate 11 can push the impurities out of the side groove 4 through the water outlet of the drainage groove 8. After the plugging plate 9 is pushed out by the magnetic rod 12 and the push plate 11, the plugging plate 9 is adsorbed by the magnetic rod 12 through the magnetic attraction, so that the plugging plate 9 will not fall off after leaving the drainage groove 8, and the impurities pushed out by the push plate 11 will enter the collecting groove 14 and be collected. After cleaning, the pull rod 10 is pushed into the side groove 4, and the push rod 10 will push the push plate 11 to move along, and the push plate 11 will drive the magnetic rod 12 to move along, and the magnetic rod 12 can pull the plugging plate 9 to move along through the jack 13 through the magnetic attraction, so that the plugging plate 9 can block the drainage groove 8 again, which is convenient for starting the next round of penetration test. By setting up a slag removal mechanism, after each penetration test, the impurities on the filter plate 5 can be cleaned very conveniently, which is simple and efficient, and improves the overall test efficiency of penetration.

[0038] like Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, in the present invention, a vibration mechanism is also provided, which includes a guide plate 15, which is fixedly installed on the inclined surfaces on the left and right sides of the side groove 4, and the guide plate 15 is arranged in an inclined shape, which is convenient for aggregating water flow and increasing the flow rate. A rotating rod 16 is rotatably installed on the top of the push plate 11, and a fixing rod 20 is fixedly installed on the top of the rotating rod 16. A round ball 17 is rotatably installed outside the fixing rod 20, and the fixing rod 20 is arranged inside the round ball 17. A bent rod 18 is rotatably installed outside the rotating rod 16, and an elastic element is arranged between the outside of the rotating rod 16 and the top of the push plate 11, and a metal spring is used as the elastic element here, so that the rotation of the rotating rod 16 has an elastic restoring force, and the bottom of the bent rod 18 is set in a spherical shape, and an elastic element is arranged between the outside of the bent rod 18 and the outside of the rotating rod 16, and a metal spring is used as the elastic element here, so that the rotation of the bent rod 18 has an elastic restoring force, and a circular groove 19 is opened on the push plate 11, and the spherical end of the bottom of the bent rod 18 is arranged close to the outside of the circular groove 19;

[0039] In the above technical scheme, when the pull rod 10 is pulled outward from the side groove 4 to clean the impurities on the filter plate 5, the push plate 11 moves with the pull rod 10, and the push plate 11 will drive the rotating rod 16 and the ball 17 to follow and move. When the ball 17 moves to the position of the guide plate 15, the ball 17 will collide with the guide plate 15, causing the guide plate 15 to vibrate, thereby promoting the flow of water near the guide plate 15, preventing the water flow from moving slowly when it is not aggregated and attaching to the left and right side surfaces of the side groove 4 and being difficult to move, thereby improving the collection efficiency of the side leakage water flow, and thus improving the test accuracy. Due to the action force and reaction force, when the ball 17 hits the guide plate 15, the ball 17 will also be squeezed and drive the rotating rod 16 to rotate counterclockwise. At the same time, the ball 17 itself will also rotate with the fixed rod 20 as the center due to the squeezing friction. When the ball 17 is separated from the guide plate 15, the ball 17 will rotate clockwise due to the elastic force of the elastic element to return to the initial position. The counterclockwise rotation of the rotating rod 16 will drive the curved rod 18 to rotate accordingly, and the counterclockwise movement of the curved rod 18 will cause the spherical end at its bottom to squeeze and collide with the circular center groove 19, thereby generating vibration, which can promote the falling of impurities and water flow on the surface of the push plate 11, and the spherical groove 19 can aggregate the water flow and impurities on the surface of the push plate 11, thereby preventing the water flow and impurities from always existing on the upper surface of the push plate 11 and easily falling behind the push plate 11, where the back of the push plate 11 is the end close to the triangular plate 7. Finally, through the squeezing and vibration of the bottom of the curved rod 18 and the circular groove 19, impurities can be prevented from passing through the upper surface of the push plate 11 and falling behind the push plate 11, thereby improving the collection efficiency of impurities, and through the friction and collision between the ball 17 and the guide plate 15, the flow rate of the side leakage water flow can be increased, thereby improving the test accuracy.

[0040] like Figure 6 , Figure 7 and Figure 8 As shown, in the present invention, an auxiliary mechanism is also provided, which includes a collar 21, which is slidably sleeved on the outside of the fixing rod 20, and an elastic element is provided between the outside of the collar 21 and the outside of the fixing rod 20, wherein the elastic element uses a metal spring sheet, so that the sliding of the collar 21 has an elastic restoring force, and semicircular protrusions 23 are fixedly installed on both sides of the bottom of the ball 17, the interior of the semicircular protrusion 23 is hollow and the exterior forms an integrated structure with the ball 17, and a swing rod 22 is rotatably installed at the bottom of the collar 21, and the bottom of the swing rod 22 is spherical, thereby reducing the impact contact surface and thus reducing the impact loss, and a rubber elastic rod 24 is fixedly installed on the outside of the swing rod 22, and a drooping rod 25 is fixedly installed on the bottom of the rubber elastic rod 24, and the bottom of the drooping rod 25 is set in a spherical shape for easy impact, and a semicircular block 26 is fixedly installed on the inside of the ball 17, and the bottom of the drooping rod 25 is set close to the top of the semicircular block 26;

[0041] In the above technical scheme, when the ball 17 and the guide plate 15 are squeezed and reciprocatingly swung, the ring 21 will oscillate reciprocatingly due to the force of inertia, and due to the elastic restoring force of the elastic element of the ring 21, the ring 21 can return to the initial position after the swing, and in the process of the reciprocating swing of the ring 21, the ring 21 will drive the swing rod 22 to follow the movement, and the swing rod 22 will knock on the semicircular protrusion 23 when following the reciprocating movement. The semicircular protrusion 23 is struck and vibrates, which can shake off the water flow attached to the surface of the ball 17 due to the friction between the ball 17 and the guide plate 15. At the same time, the vibration generated by the semicircular protrusion 23 can also promote the vibration of the guide plate 15, thereby improving the vibration efficiency. Moreover, when the ball 17 rotates clockwise and approaches the inclined surfaces on the left and right sides of the side groove 4, the vibration generated by the semicircular protrusion 23 on the ball 17 will also assist the vibration of the inclined surfaces on the left and right sides of the side groove 4, thereby promoting the adjustment of the inclined surface The water flow of the body flows, and when the ball 17 rotates, the ball 17 will drive the semicircular block 26 to rotate with it, and the semicircular block 26 will contact and rub the bottom of the drooping rod 25. In the process that the swing rod 22 follows the movement of the ring 21 to knock the semicircular protrusion 23, the swing rod 22 will squeeze the rubber elastic rod 24, so that the rubber elastic rod 24 will bend downward, and the rubber elastic rod 24 will push the drooping rod 25 to move downward, so that a collision is formed between the drooping rod 25 and the semicircular block 26, so that the ball 17 vibrates during the rotation process, promotes the falling of the water flow attached to its own surface, and improves its own vibration efficiency. Finally, through the setting of the auxiliary mechanism, the ball 17 can promote the vibration effect through the semicircular protrusion 23 and the semicircular block 26 during the friction and extrusion between the ball 17 and the guide plate 15, improve the vibration efficiency, and accelerate the falling and flow rate of the surface water flow of the guide plate 15 and the ball 17 itself.

[0042] To sum up, by setting the side groove 4 to carry out the penetration test on the side leakage part of the self-healing concrete crack specimen 1, the side leakage data is used to show the repair effect of the self-healing concrete crack, which not only achieves the embodiment of the repair effect by the permeability test, but also avoids the influence of the side leakage on the penetration test effect during the penetration process. The impurities on the surface of the filter plate 5 can be cleaned by the slag removal mechanism, and the flow of water on the inclined surfaces on the left and right sides of the side groove 4 can be promoted by the vibration mechanism and the auxiliary mechanism, thereby improving the water collection efficiency and thus improving the test accuracy.

[0043] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for testing the repair effect of microbial self-healing concrete cracks, comprising a self-healing concrete crack specimen (1) and a water inlet tank (2), characterized in that: Also includes: A side trough (4) is fixedly mounted with a connecting rod (3) on its top, the top of the connecting rod (3) is fixedly mounted on the outside of the water inlet trough (2), a filter plate (5) is fixedly mounted on the bottom of the side trough (4), a water collecting trough (6) is fixedly mounted on the bottom of the filter plate (5), and a discharge port is provided at the bottom of the side of the water collecting trough (6); The bottom of the water inlet groove (2) is configured to be in the shape of a rubber sealing ring, the left and right sides of the side groove (4) are configured to be in an inclined shape, and a triangular plate (7) is fixedly mounted on one end of the side groove (4) close to the surface of the self-healing concrete crack specimen (1); A slag removal mechanism is provided in the side groove (4), and the slag removal mechanism comprises a drainage groove (8). The drainage groove (8) is fixedly installed at one end of the side groove (4) away from the self-healing concrete crack specimen (1). A blocking plate (9) is slidably installed at the water outlet of the drainage groove (8). A push plate (11) is slidably installed on the upper surface of the filter plate (5). The initial position of the push plate (11) is located outside the triangular plate (7) and is closely attached. A pull rod (10) is penetrated and slidably installed on the side groove (4). , one end of the pull rod (10) is fixedly mounted on the outside of the push plate (11), the other end of the pull rod (10) is arranged on the outside of the side groove (4), a magnetic rod (12) is fixedly mounted on the outside of the push plate (11), a plug hole (13) is provided on the blocking plate (9) at the same horizontal position as the magnetic rod (12), the width of one end of the blocking plate (9) located outside the side groove (4) is greater than the width of the water outlet of the drainage groove (8), and a collecting groove (14) is fixedly mounted on the outside of the side groove (4); The side groove (4) is provided with a vibration mechanism, which comprises a guide plate (15), the guide plate (15) being fixedly mounted on the inclined surfaces on the left and right sides of the side groove (4), a rotating rod (16) being rotatably mounted on the top of the push plate (11), a fixing rod (20) being fixedly mounted on the top of the rotating rod (16), a round ball (17) being rotatably mounted on the outside of the fixing rod (20), the fixing rod (20) being arranged inside the round ball (17), a bent rod (18) being rotatably mounted on the outside of the rotating rod (16), an elastic element being arranged between the outside of the rotating rod (16) and the top of the push plate (11), an elastic element being arranged between the outside of the bent rod (18) and the outside of the rotating rod (16), and a circular groove (19) being provided on the push plate (11).

2. A microbial self-healing concrete crack repair effect testing device according to claim 1, characterized in that: The guide plate (15) is arranged in an inclined shape, the bottom of the curved rod (18) is arranged in a spherical shape, and the spherical end of the bottom of the curved rod (18) is arranged close to the outside of the circular groove (19).

3. A microbial self-healing concrete crack repair effect testing device according to claim 2, characterized in that: An auxiliary mechanism is also provided in the sphere (17), the auxiliary mechanism comprising a collar (21), the collar (21) being slidably sleeved on the outside of the fixing rod (20), an elastic element being provided between the outside of the collar (21) and the outside of the fixing rod (20), semicircular protrusions (23) being fixedly mounted on both sides of the bottom of the sphere (17), the inside of the semicircular protrusion (23) being hollow and the outside forming an integral structure with the sphere (17).

4. A microbial self-healing concrete crack repair effect testing device according to claim 3, characterized in that: A swing rod (22) is rotatably mounted on the bottom of the collar (21), the bottom of the swing rod (22) being arranged in a spherical shape, a rubber elastic rod (24) is fixedly mounted on the outside of the swing rod (22), a drooping rod (25) is fixedly mounted on the bottom of the rubber elastic rod (24), the bottom of the drooping rod (25) being arranged in a spherical shape, a semicircular block (26) is fixedly mounted inside the sphere (17), the bottom of the drooping rod (25) being arranged close to the top of the semicircular block (26).

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