A device for forming a specimen for testing the adhesive property of concrete

Abstract

The utility model relates to concrete oblique shearing test piece manufacturing technical field especially for a kind of oblique shearing test piece forming device for concrete bonding performance test, including setting mould body, the front and rear two end edge positions of setting mould body are all set with side slot, the inside bottom surface middle position of setting mould body is set with center groove, in the utility model, by the setting of auxiliary flat plate, outer convex strip, rubber braid, round hole slot, ultrasonic generator, auxiliary vertical plate and center groove, will be convenient the oblique shearing test piece forming device for concrete bonding performance test can be in the process of setting manufacturing to concrete oblique shearing test piece, with the concrete slurry of proper amount respectively injected into the two independent setting space divided by feed inlet, the device can generate vibration force when multiple ultrasonic generators start running, and vibration force is transmitted to concrete slurry by auxiliary flat plate, and the solidification speed of concrete oblique shearing test piece is accelerated.

Description

Technical Field

[0001] This utility model relates to the field of concrete oblique shear specimen preparation technology, specifically an oblique shear specimen forming device for testing the bonding performance of concrete. Background Technology

[0002] In testing the bond performance between new and old concrete, the stress state of the bond layer between new and old concrete varies greatly under different structural forms and usage conditions. The oblique shear test is considered to be one of the test methods that can sensitively reflect changes in bond strength. The concrete oblique shear specimen is a test specimen used to test the bond performance between new and old concrete. Before conducting the concrete oblique shear specimen test, it is usually necessary to use a molding device, i.e. a molding mold, to make the oblique shear specimen.

[0003] Currently available oblique shear specimen molding devices for testing concrete bond performance mainly involve pouring an appropriate amount of concrete slurry into the mold cavity and then curing it to form the concrete oblique shear specimen. However, considering that the concrete slurry usually needs a certain amount of time to settle and level after injection, this operation often results in problems such as long slurry leveling time and low curing efficiency during actual operation. This is also not conducive to the rapid curing of the concrete oblique shear specimen and the subsequent rapid testing. Therefore, an oblique shear specimen molding device for testing concrete bond performance is proposed to address the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a shear specimen molding device for testing the bonding performance of concrete, in order to solve the problem mentioned in the background art that the curing efficiency of existing shear specimen molding devices for testing the bonding performance of concrete is affected by the long flow of slurry during use.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A shear specimen forming device for testing the bond performance of concrete includes a shaping mold body. Side grooves are formed at both the front and rear edges of the shaping mold body. A central groove is formed at the center of the inner bottom surface of the shaping mold body. Auxiliary upright plates are fixedly connected to the left and right sides of the inner side of the central groove. An auxiliary flat plate, which is clamped to the inner side of the central groove, is attached to the top of the auxiliary upright plates. Outer protrusions are fixedly connected to both the front and rear ends of the auxiliary flat plate, and rubber strips are adhered to the outside of the outer protrusions. An ultrasonic generator is fixedly installed at the lower-middle position inside the central groove. A partition plate is fixedly connected to the top of the auxiliary flat plate. Clamping plates that engage with the side grooves are fixedly connected to both ends of the front end of the partition plate. An electric actuator extending into the shaping mold body is fixedly installed at the lower inner position of the side groove.

[0007] Preferably, a base is fixedly connected to the bottom of the sizing die body. Fastening screws are provided at four corner positions on the upper end surface of the base, and the lower ends of the fastening screws penetrate through the interior of the base and extend downward.

[0008] Preferably, an outer support ring is fixedly connected to the outside of the sizing die body. An upper cover is provided in a fitting manner on the top of the outer support ring and is clamped together with the sizing die body. The outer support ring has a "hui" - shaped structure.

[0009] Preferably, side handles are fixedly connected to both the left and right sides of the upper cover. A feed inlet is connected to the top of the upper cover, and the feed inlet is in communication with the interior of the sizing die body.

[0010] Preferably, several ultrasonic generators are arranged in a horizontally equidistant structure along the interior of the central groove. The end of the vibration head provided at the top of the ultrasonic generator is clamped into the interior of the round hole groove. The inner surface of the central groove is in contact with the outer surface of the rubber strip. The rubber strip has a "U" - shaped structure. The movable end of the electric push rod is fixedly connected to the bottom end of the clamping plate. The partition insertion plate is inserted into the interior of the sizing template body in an inclined structure.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] In the present utility model, through the setting of the auxiliary flat plate, the outer convex strip, the rubber strip, the round hole groove, the ultrasonic generator, the auxiliary vertical plate and the central groove, it is convenient for the forming device for the inclined shear specimen used for testing the bonding performance of concrete to carry out the sizing production of the concrete inclined shear specimen. Under the auxiliary division effect of the partition insertion plate, as an appropriate amount of concrete slurry is respectively injected into the two independent sizing spaces divided through the feed inlet, under the auxiliary sealing of the rubber strip and the auxiliary support of the auxiliary vertical plate, the device can use the vibration force generated when multiple ultrasonic generators are started and operated, and the vibration force is transmitted to the concrete slurry through the auxiliary flat plate, enabling it to achieve rapid leveling, avoiding the influence on the curing efficiency of the device due to the long leveling time of the slurry, accelerating the curing speed of the concrete inclined shear specimen, and also accelerating the progress of the subsequent testing work using the concrete inclined shear specimen. At the same time, the vibration component and the partition component are used in combination, enabling the concrete inclined shear specimen to be quickly demolded and taken out from the interior of the sizing die body after being cured and formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 is a schematic diagram of the overall disassembled structure of the present utility model;

[0015] Figure 3 This is a schematic diagram of the upward movement structure of the separator plate of this utility model;

[0016] Figure 4 This is a schematic diagram of the circular hole groove arrangement structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the internal semi-section structure of the shaping mold body of this utility model.

[0018] In the diagram: 1. Shaping mold body; 2. Outer support ring; 3. Central groove; 4. Auxiliary plate; 5. Outer protrusion strip; 6. Rubber wrapping strip; 7. Round hole groove; 8. Ultrasonic generator; 9. Auxiliary upright plate; 10. Divider plate; 11. Clamping plate; 12. Side groove; 13. Electric push rod; 14. Base; 15. Fastening screw; 16. Upper cover; 17. Side handle; 18. Feed port. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-5 This utility model provides a technical solution:

[0021] A shear specimen forming device for testing the bonding performance of concrete includes a shaping mold body 1. Side grooves 12 are provided at both the front and rear edges of the shaping mold body 1. A central groove 3 is provided at the middle of the inner bottom surface of the shaping mold body 1. Auxiliary upright plates 9 are fixedly connected to the left and right sides of the inner side of the central groove 3. An auxiliary flat plate 4 is attached to the top of the auxiliary upright plate 9 and is clamped to the inner side of the central groove 3. Outer protrusions 5 are fixedly connected to both the front and rear ends of the auxiliary flat plate 4. Rubber strips 6 are glued to the outside of the outer protrusions 5. An ultrasonic generator 8 is fixedly installed at the lower middle position inside the central groove 3. A partition plate 10 is fixedly connected to the top of the auxiliary flat plate 4. The front ends of the partition plate 10 are fixedly connected to the clamping plates 11 that are clamped into the side grooves 12. An electric push rod 13 extending into the shaping mold body 1 is fixedly installed at the lower position inside the side grooves 12.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, a base 14 is fixedly connected to the bottom of the shaping mold body 1. At the four corner positions of the upper end surface of the base 14, fastening screws 15 are provided. The lower ends of the fastening screws 15 extend downward through the interior of the base 14. The multiple fastening screws 15 serve to fix the device to a horizontal platform. An outer support ring 2 is fixedly connected to the outside of the shaping mold body 1. A top cover 16 that is snap-connected to the shaping mold body 1 is fitted on the top of the outer support ring 2. The outer support ring 2 has a "hui" - shaped structure. After the top cover 16 is snapped in place, the "hui" - shaped structure will assist in supporting the top cover 16, making its installation more stable. Side grips 17 are fixedly connected to both the left and right sides of the top cover 16. A feed inlet 18 is connected to the top of the top cover 16, and the feed inlet 18 is in communication with the interior of the shaping mold body 1. With this up - and - down communication setting, the device can accurately inject an appropriate amount of concrete slurry into two independent shaping spaces through the two feed inlets 18.

[0023] As Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, several ultrasonic generators 8 are arranged in a horizontal equidistant structure along the interior of the central groove 3. The end of the vibration head provided at the top of the ultrasonic generator 8 is snapped into the interior of the round hole groove 7. The inner surface of the central groove 3 is in contact with the outer surface of the rubber strip 6. The rubber strip 6 has a "U" - shaped structure. The movable end of the electric push rod 13 is fixedly connected to the bottom end of the clamping plate 11. The partition insertion plate 10 is inserted into the interior of the shaping template body in an inclined structure. When the auxiliary flat plate 4 is fitted into the interior of the central groove 3, the rubber strip 6 can fill and seal the gap between the auxiliary flat plate 4 and the central groove 3, and at the same time, it can utilize its own resilience effect to prevent the auxiliary flat plate 4 from shifting in position due to vibration.

[0024] Workflow: The electrical energy required for the device to start and operate in this utility model comes from an external power source. Before use, the device needs to be fixed to a horizontal platform surface by multiple fastening screws 15. Before conducting bonding performance tests on new and old concrete, when preparing oblique shear specimens, as the previous stage of preparation is completed, the two electric push rods 13 move downwards through the front and rear clamping plates 11, carrying the dividing plate 10 and the auxiliary plate 4. The auxiliary plate 4 is supported by the auxiliary upright plate 9 and fits into the interior of the central groove 3. The vibrator head at the top of the ultrasonic generator 8 fits into the interior of the circular hole groove 7. The dividing plate 10 divides the interior of the mold into two pouring spaces, and the clamping plate 11 fits into the interior of the side groove 12. Then, the upper cover 16 is attached to the mold body 1, making the interior of the mold cavity semi-closed. The release agent is applied to the inner surface of the molding mold body 1. Under the dividing action of the partition plate 10, an appropriate amount of concrete slurry is poured into the two divided molding spaces through the left and right feed ports 18. Multiple ultrasonic generators 8 are activated to generate vibration force, which is transmitted to the concrete slurry through the auxiliary plate 4. This allows the concrete slurry to achieve rapid leveling, accelerating the leveling process and the initial setting process. Then, with the assistance of the partition plate 10, the inclined concrete shear specimen is shaped inside the molding mold body 1. The upper cover 16 is removed, and the two electric push rods 13 are activated again to push the clamping plate 11 upward. The partition plate 10 will then lift the two formed concrete shear specimens upward through the auxiliary plate 4, making it convenient for subsequent operators to demold and remove the concrete shear specimens.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shearing specimen forming device for testing the bond performance of concrete, comprising a shaping mold body (1), characterized in that: Side grooves (12) are provided at the edge positions of the front and rear ends of the shaping die body (1). A central groove (3) is provided in the middle of the inner bottom surface of the shaping die body (1). Auxiliary vertical plates (9) are fixedly connected to both the left and right sides inside the central groove (3). An auxiliary flat plate (4) clamped inside the central groove (3) is arranged in a fitting manner on the top of the auxiliary vertical plate (9). Outer protruding strips (5) are fixedly connected to both the front and rear ends of the auxiliary flat plate (4). Rubber wrapping strips (6) are adhered to the outside of the outer protruding strips (5). An ultrasonic generator (8) is fixedly installed at the lower middle position inside the central groove (3). A partition inserting plate (10) is fixedly connected to the top of the auxiliary flat plate (4). Clamping plates (11) clamped into the side grooves (12) are fixedly connected to both ends of the front end of the partition inserting plate (10). An electric push rod (13) extending into the shaping die body (1) is fixedly installed at the lower position inside the side groove (12).

2. The oblique shear specimen forming device for testing the bond performance of concrete according to claim 1, characterized in that: A base (14) is fixedly connected to the bottom of the shaping die body (1). Tightening screws (15) are provided at the four corner positions of the upper end surface of the base (14). The lower ends of the tightening screws (15) extend downward through the inside of the base (14).

3. The oblique shear specimen forming device for testing the bond performance of concrete according to claim 1, characterized in that: An outer supporting ring (2) is fixedly connected to the outside of the shaping die body (1). An upper cover (16) clamped to the shaping die body (1) is arranged in a fitting manner on the top of the outer supporting ring (2). The outer shape of the outer supporting ring (2) is a "hui" - shaped structure.

4. The oblique shear specimen forming device for testing the bond performance of concrete according to claim 3, characterized in that: Side holding handles (17) are fixedly connected to both the left and right sides of the upper cover (16). A feed inlet (18) is connected to the top of the upper cover (16). The feed inlet (18) is conductively arranged with the inside of the shaping die body (1).

5. The oblique shear specimen forming device for testing the bond performance of concrete according to claim 1, characterized in that: A plurality of ultrasonic generators (8) are arranged in a horizontally equidistant structure along the inside of the central groove (3). The end of the vibrating head provided at the top of the ultrasonic generator (8) is clamped into the inside of the circular hole groove (7). The inner surface of the central groove (3) is in contact with the outer surface of the rubber wrapping strip (6). The outer shape of the rubber wrapping strip (6) is a "U" - shaped structure. The movable end of the electric push rod (13) is fixedly connected to the bottom end of the clamping plate (11). The partition inserting plate (10) is inserted into the inside of the shaping die body (1) in an inclined structure.

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