A test block casting device and method for testing the bond performance of reinforced concrete

Abstract

The present invention discloses a test block casting device and method for testing the bonding performance of reinforced concrete, belonging to the technical field of concrete test block preparation, and comprising: a bottom plate, vertically connected with a frame body above it; a plurality of casting plates arranged in a row; a casting pipe vertically arranged in the middle of the upper end surface of the frame body, and a cover plate is hermetically arranged above the casting plates; a diameter adjusting unit arranged in each of the casting plates, a pillar is vertically fixed on one side of the frame body, and a connecting plate is slidably installed on the pillar; a circulating liquid supply unit is installed on the connecting plate, and a liquid inlet channel and a liquid discharge channel are arranged on one side of the casting plate; the present invention can be stacked and fixed as required to form a concrete casting cavity with a specific size. A diameter adjusting unit is arranged in each casting plate, which can effectively change the size of different positions of the concrete casting cavity, so as to form a concrete test block with a specific shape during subsequent casting and molding, meeting different bonding performance test experiments.

Description

Technical Field

[0001] The present invention belongs to the technical field of concrete specimen preparation, and specifically relates to a specimen pouring device and method for testing the bond performance of reinforced concrete. Background Technique

[0002] Reinforced concrete is a composite material widely used in modern architecture, composed of steel bars and concrete. It has excellent mechanical properties and can withstand large tensile and compressive forces. With the rapid development of the construction industry in China, reinforced concrete structures are the main building forms for housing construction. Among them, steel bars are ductile materials and concrete is a brittle material, and the bond performance between steel bars and concrete directly affects the overall strength and durability of the structure. When testing the bond performance between steel bars and concrete, it is usually necessary to make specimens containing one or more steel bars and embed them in concrete.

[0003] Traditional specimen pouring methods mainly include manual pouring or simple mold forming. For example, the invention patent with the publication number CN109366698B can realize the integrated operation of pouring and demolding, and it is convenient to quickly demold by using the gravity of concrete itself. However, the pouring surface size of the concrete specimen is constant, and it is impossible to prepare concrete specimens with specific sizes and shapes; moreover, during the pouring process, it is impossible to vibrate the concrete, especially in the area where steel bars are dense, air bubbles or voids are easily formed, which will reduce the contact area between steel bars and concrete, and thus affect the accuracy of the bond performance test results. Therefore, it is necessary to provide a specimen pouring device and method for testing the bond performance of reinforced concrete to solve the problems proposed in the above background technique. Summary of the Invention

[0004] To achieve the above object, the present invention provides the following technical solution: A specimen pouring device for testing the bond performance of reinforced concrete, which includes: a bottom plate, with a frame body vertically connected above it; a support column, arranged and fixed in the middle of the bottom plate, and a guard plate seat is installed at the upper end of the support column; a plurality of pouring plates are arranged in a row, and the plurality of pouring plates are distributed along the axial direction of the support column and fixed above the guard plate seat; a pouring pipe is vertically arranged in the middle of the upper end surface of the frame body, a cover plate is hermetically arranged above the pouring plate, and the lower end of the pouring pipe is connected to the cover plate; a diameter adjustment unit is arranged in each of the pouring plates; an outer sliding frame is slidably installed in the frame body, a support column is vertically fixed on one side of the frame body, a connecting plate is slidably installed on the support column, and the connecting plate is fixed to the outer sliding frame; a circulating liquid supply unit is installed on the connecting plate, a liquid inlet channel and a liquid discharge channel are opened on one side of the pouring plate, and the circulating liquid supply unit is hermetically docked with the liquid inlet channel and the liquid discharge channel.

[0005] Preferably, the casting plates are hermetically combined to form a concrete casting cavity, and an anti-seepage membrane is provided in the concrete casting bin; the cover plate is provided with steel bar insertion holes.

[0006] Preferably, the diameter adjusting unit includes: an upper pressing plate, the center of which is arranged in the casting plate, and a lower pressing plate is installed below the upper pressing plate on the casting plate; positioning holes are circumferentially formed on the upper pressing plate and the lower pressing plate; inner adjusting plates are provided in a plurality and distributed circumferentially. One end of each inner adjusting plate is symmetrically fixed with a shaft pin up and down and is rotationally connected to the positioning hole through the shaft pin. The cross-section of the inner adjusting plate is in an arc structure.

[0007] Preferably, the ends of the inner adjusting plates are slidably sleeved with adjacent inner adjusting plates, and sliding grooves are formed on the upper and lower end surfaces of the inner adjusting plates. The adjacent inner adjusting plates are slidably connected to the sliding grooves through guide shafts; a toothed disc is rotatably arranged in the casting plate, a guide rod is eccentrically connected to the toothed disc, one end of the guide rod is connected to one of the inner adjusting plates, a toothed plate is slidably arranged in the casting plate, the toothed plate is meshed and driven with the toothed disc, and a top support cylinder is arranged on the outer sliding frame on the side far from the connecting plate. The output end of the top support cylinder abuts against the toothed plate.

[0008] Preferably, a plurality of inner rods are circumferentially distributed below the upper pressing plate. Each inner rod vertically slides through the casting plate, and the lower end of the inner rod is fixed to the lower pressing plate. A spring is sleeved on the inner rod, and the upper end of the spring abuts against the casting plate; a sharp-toothed disc is fixed on the inner rod in the casting plate, and a top toothed ring is rotatably arranged in the casting plate, so that the tooth tips of the top toothed ring and the sharp-toothed disc are staggered or in abutting contact.

[0009] Preferably, a circulation bin is formed in the casting plate, a turbine blade is rotatably arranged in the circulation bin, and the liquid inlet channel and the liquid outlet channel are both communicated with the circulation bin; a sealing ring is rotatably arranged above the circulation bin in the casting plate, a plurality of coupling shafts are fixed in the sealing ring, the upper end of the coupling shaft is connected to the top toothed ring, and the lower end thereof is fixed to the turbine blade.

[0010] Preferably, a plurality of vibration guide rods are circumferentially distributed in the casting plate. Each vibration guide rod is radially slidably arranged in the casting plate. A compression spring is sleeved on the vibration guide rod, and the compression spring makes the vibration guide rod slide toward the side close to the center of the casting plate through elastic force; one end of the vibration guide rod is fixed with an inclined block, and a dial ring is coaxially fixed on the top toothed ring. A plurality of convex edges are distributed on the outer wall of the dial ring, and the convex edges are in sliding fit contact with the inclined block.

[0011] Preferably, the circulating liquid supply unit includes: a fixed shaft vertically fixed on the connecting plate, with a fine-tuning plate slidably mounted on the fixed shaft; a liquid guide seat, which is a plurality of vertically arranged and fixed on the fine-tuning plate, each of the liquid guide seats is in sealed contact with the corresponding casting plate, and a liquid supply pipe is connected to the outside of each liquid guide seat; an adjusting cylinder vertically connected to the connecting plate, and the output end of the adjusting cylinder is connected to the fine-tuning plate.

[0012] Preferably, a method for casting specimens for testing the bond performance of reinforced concrete includes the following steps:

[0013] S1. Stack and fix multiple groups of casting plates along the axial direction of the support column according to the casting height, and form a layered concrete casting cavity supported by the guard plate seat. An anti-seepage membrane is laid inside to prevent leakage, and then a cover plate is sealed on the upper casting plate;

[0014] S2. Based on the pre-cast shape, control the vertical sliding adjustment of the outer sliding frame along the frame body, so that the top support cylinder on the outer sliding frame pushes and adjusts the toothed plate in each casting plate, thereby driving the toothed disk to rotate, and the inner adjustment plate slides and unfolds under the push of the guide rod to adjust the inner diameter size of the casting cavity;

[0015] S3. Pour concrete through the top casting pipe, and the concrete gradually fills the casting cavity; during the casting process, the outer sliding frame is synchronously adjusted upward with the casting height. Among them, the circulating liquid supply unit can be hermetically docked with each casting plate, so as to drive the high-speed rotation of the turbine blades in the casting plate through hydraulic action, and during the rotation, the diameter adjustment unit vibrates axially through the meshing action of the top tooth ring and the tooth edge of the sharp tooth disk, while the vibration guide rod can provide radial vibration for the inner adjustment plate during the rotation of the dial ring;

[0016] S4. After the initial casting is completed, the liquid supply pipe injects a constant temperature medium into the circulation bin to precisely control the hardening temperature of the concrete through closed-loop flow;

[0017] S5. After curing, demold each casting plate one by one.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] In the present invention, multiple casting plates can be stacked and fixed as needed to form a concrete casting cavity of a specific size. Each casting plate is provided with a diameter adjusting unit, which can effectively change the size of different positions of the concrete casting cavity, so as to form concrete test blocks of a specific shape during subsequent casting and molding, in order to meet different bond performance test experiments. Each casting plate is provided with a turbine blade, which can make the top tooth ring and the tooth edge of the sharp tooth disc bite and interleave during continuous rotation, so as to realize the overall axial vibration of the diameter adjusting unit. The anti-seepage membrane can effectively prevent the leakage of concrete slurry. The circumferentially distributed vibration guide rods can provide radial vibration for the concrete slurry in the casting plate at the same time. Therefore, during the casting process, as the casting height increases, the circulating liquid supply unit is docked with each casting plate to transport high-pressure fluid to the circulation bin in the casting plate to drive the turbine blade in the casting plate to rotate at different speeds, realizing the step-by-step vibration effect during the casting process. And after the casting is completed, it can be vibrated in segments as needed to avoid voids or bubbles in the test block, thus affecting the subsequent test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a side view of the present invention;

[0022] Figure 3 is a schematic diagram of the structure of the casting plate in the present invention;

[0023] Figure 4 is a half-sectional view of the diameter adjusting unit in the present invention;

[0024] Figure 5 is a schematic diagram of the installation structure of the tooth disc and the tooth plate in the present invention;

[0025] Figure 6 is a schematic diagram of the installation structure of the top tooth ring and the sharp tooth disc in the present invention;

[0026] Figure 7 is a schematic diagram of the installation structure of the vibration guide rod in the present invention;

[0027] Figure 8 is a schematic diagram of the distribution structure of multiple vibration guide rods in the present invention;

[0028] Figure 9 is Figure 2 a schematic enlarged view of the structure at A in

[0029] In the figure: 1. Bottom plate; 11. Frame body; 12. Support column; 13. Guard plate seat; 14. Pouring pipe; 15. Cover plate; 16. Outer sliding frame; 17. Support pillar; 18. Connecting plate; 19. Steel bar jack; 2. Pouring plate; 21. Liquid inlet channel; 22. Liquid discharge channel; 23. Serrated disk; 24. Top tooth ring; 25. Circulation bin; 26. Turbine blade; 3. Diameter adjustment unit; 31. Upper pressure plate; 32. Lower pressure plate; 33. Positioning hole; 34. Inner adjustment plate; 35. Axle pin; 36. Chute; 37. Tooth disk; 38. Guide rod; 39. Tooth plate; 4. Circulating liquid supply unit; 41. Fixed shaft; 42. Fine adjustment plate; 43. Liquid guide seat; 44. Adjusting cylinder; 5. Inner rod; 51. Sealing ring; 52. Coupling; 6. Vibration guide rod; 61. Inclined block; 62. Dial ring. Detailed implementation manner

[0030] Please refer to Figures 1 - 9 , in the embodiment of the present invention, a test block pouring device for testing the bonding performance of reinforced concrete includes:

[0031] A bottom plate 1, with a frame body 11 vertically connected above it;

[0032] Support columns 12, arranged and fixed in the middle of the bottom plate 1, and a guard plate seat 13 is installed at the upper end of the support columns 12;

[0033] Pouring plates 2, which are multiple arranged in a row, and the multiple pouring plates 2 are distributed along the axial direction of the support columns 12 and fixed above the guard plate seat 13; among them, multiple guide rods can be vertically arranged in the frame body 11, and each pouring plate 2 can be installed on the guide rods in a limited sliding manner to prevent the pouring plate 2 from tilting during pouring;

[0034] Pouring pipes 14, vertically arranged in the middle of the upper end surface of the frame body 11, a cover plate 15 is hermetically arranged above the pouring plates 2, and the lower end of the pouring pipe 14 is communicated with the cover plate 15;

[0035] Diameter adjustment units 3, arranged in each of the pouring plates 2, for adjusting the effective pouring area in the pouring plates 2, so as to change the size and shape of the subsequent poured and formed parts;

[0036] An outer sliding frame 16, slidably installed in the frame body 11, a support pillar 17 is vertically fixed on one side of the frame body 11, a connecting plate 18 is slidably installed on the support pillar 17, and the connecting plate 18 is fixed to the outer sliding frame 16;

[0037] The circulating liquid delivery unit 4 is installed on the connecting plate 18. One side of the casting plate 2 is provided with a liquid inlet channel 21 and a liquid discharge channel 22. The circulating liquid delivery unit 4 is hermetically docked with the liquid inlet channel 21 and the liquid discharge channel 22. The high-pressure fluid in the circulating liquid delivery unit 4 can enter the casting plate 2 through the liquid inlet channel 21 and then flow out from the liquid discharge channel 22.

[0038] In this embodiment, the casting plates 2 are hermetically combined to form a concrete casting cavity. An anti-seepage membrane is provided in the concrete casting bin. The anti-seepage membrane can isolate the concrete from the casting plate 2, avoid adhesion between the concrete and the casting plate 2, and at the same time prevent the concrete from leaking out during the casting process. The cover plate 15 is provided with steel bar insertion holes 19, which is convenient for pre-inserting multiple steel bars.

[0039] As a preferred embodiment, the diameter adjusting unit 3 includes:

[0040] An upper pressing plate 31, the center of which is arranged in the casting plate 2. A lower pressing plate 32 is installed below the upper pressing plate 31 on the casting plate 2.

[0041] Positioning holes 33 are circumferentially provided on the upper pressing plate 31 and the lower pressing plate 32.

[0042] Inner adjusting plates 34 are multiple and distributed circumferentially. One end of each inner adjusting plate 34 is symmetrically fixed with a shaft pin 35 up and down and is rotatably connected to the positioning hole 33 through the shaft pin 35. The cross-section of the inner adjusting plate 34 is in an arc structure. The multiple inner adjusting plates 34 can be combined with each other to jointly form a frame structure with a hollow middle part. At this time, the concrete can be cast and formed in the middle of the frame structure. When the inner adjusting plates 34 rotate synchronously to adjust, the center of the frame structure gradually becomes larger or smaller, thereby changing the size of the casting area.

[0043] In this embodiment, the end of each inner adjusting plate 34 is slidably sleeved with an adjacent inner adjusting plate 34, and sliding grooves 36 are provided on the upper and lower end surfaces of the inner adjusting plate 34. The adjacent inner adjusting plates 34 are slidably connected through guide shafts and the sliding grooves 36.

[0044] A toothed disk 37 is rotatably arranged in the pouring plate 2. An ejector rod 38 is eccentrically connected to the toothed disk 37. One end of the ejector rod 38 is connected to one of the inner adjusting plates 34. A toothed plate 39 is slidably arranged in the pouring plate 2. The toothed plate 39 is in meshing transmission with the toothed disk 37. A jacking cylinder (not shown in the figure) is arranged on the side of the outer sliding frame 16 away from the connecting plate 18. The output end of the jacking cylinder abuts against the toothed plate 39. Among them, before concrete pouring for each pouring plate 2, each inner adjusting plate 34 in the pouring plate 2 is in the initial position. At this time, the pouring area is the maximum size. When the outer sliding frame 16 slides up and down for adjustment, the toothed plate 39 is pushed to slide correspondingly by the jacking cylinder. Thus, the toothed disk 37 drives the ejector rod 38 under the action of gear meshing to press the inner adjusting plate 34 to one side, thereby changing the installation angle of each inner adjusting plate 34 and effectively adjusting the pouring area size to a suitable size. After pouring is completed, the jacking cylinder can push each toothed plate 39 in the reverse direction so that the inner adjusting plate 34 rotates and resets, facilitating the demoulding of concrete test blocks.

[0045] In this embodiment, a plurality of inner rods 5 are circumferentially distributed below the upper pressing plate 31. Each inner rod 5 vertically slides through the pouring plate 2, and the lower end of the inner rod 5 is fixed to the lower pressing plate 32. A spring is sleeved on the inner rod 5, and the upper end of the spring abuts against the pouring plate 2.

[0046] A sharp-toothed disk 23 is fixed on the inner rod 5 in the pouring plate 2. A top-toothed ring 24 is rotatably arranged in the pouring plate 2, so that the teeth of the top-toothed ring 24 intersect or abut against the tooth tips of the sharp-toothed disk 23. With such a setting, when the top-toothed ring 24 continuously rotates at different speeds, it can drive the inner rod 5 to slide up and down reciprocally through the biting action with the sharp-toothed disk 23. At this time, the concrete in the structural frame formed by the inner adjusting plates 34 can fully flow, the air bubble film in the concrete ruptures and discharges, accelerating the migration and discharge process of the bubbles and ensuring the pouring quality. The tooth pitch between the top-toothed ring 24 and the sharp-toothed disk 23 is designed to be 2 mm, the amplitude is 0.5 mm - 1.0 mm, and the frequency is 20 Hz - 50 Hz, realizing axial high-frequency micro-vibration. It should be noted that the upper pressing plate 31 and the lower pressing plate 32 in adjacent pouring plates 2 are provided with annular protrusions and grooves, which can ensure that the pouring plates 2 are always in sliding and sealing fit with each other to prevent concrete from overflowing. Some concrete may remain in the matching gap between the upper pressing plate 31 and the lower pressing plate 32, and external grinding and trimming (i.e., removing residual materials) can be carried out during subsequent demoulding.

[0047] In this embodiment, a circulation bin 25 is opened in the pouring plate 2. A turbine blade 26 is rotatably arranged in the circulation bin 25, and both the liquid inlet channel 21 and the liquid discharge channel 22 are communicated with the circulation bin 25.

[0048] A sealing ring 51 is rotatably arranged above the circulation bin 25 in the casting plate 2. A plurality of coupling shafts 52 are fixed in the sealing ring 51. The upper end of the coupling shaft 52 is connected to the top tooth ring 24, and the lower end thereof is fixed to the turbine blade 26. Thus, when high-pressure fluid enters the circulation bin 25 through the liquid inlet channel 21, it can push the turbine blade 26 to rotate at a high speed, thereby providing a rotational driving force for the top tooth ring 24.

[0049] As a preferred embodiment, a plurality of vibration guide rods 6 are circumferentially distributed in the casting plate 2. Each vibration guide rod 6 is radially slidably arranged in the casting plate 2. A compression spring is sleeved on the vibration guide rod 6, and the compression spring makes the vibration guide rod 6 slide towards the side close to the center of the casting plate 2 by elastic force.

[0050] One end of the vibration guide rod 6 is fixed with an inclined block 61, and a dial ring 62 is coaxially fixed on the top tooth ring 24. A plurality of convex edges are distributed on the outer wall of the dial ring 62, and the convex edges are in sliding fit contact with the inclined block 61. That is, when the dial ring 62 rotates synchronously with the top tooth ring 24, it can push the vibration guide rod 6 to slide towards the side away from the center of the casting plate 2 through the convex edges. At this time, the compression spring is gradually compressed. When the convex edge slides out of contact with the inclined block 61, the vibration guide rod 6 vibrates axially against the inner adjusting plate 34 under the action of elastic force, so that the concrete in the casting plate 2 flows sufficiently.

[0051] In this embodiment, the circulating liquid supply unit 4 includes:

[0052] A fixed shaft 41 is vertically fixed on the connecting plate 18, and a fine-tuning plate 42 is slidably mounted on the fixed shaft 41.

[0053] Liquid guide seats 43 are arranged in multiple rows up and down and fixed on the fine-tuning plate 42. Each liquid guide seat 43 is in sealed contact with the corresponding casting plate 2, and a liquid supply pipe is connected to the outside of each liquid guide seat 43. Such a setting can convey high-pressure fluid to the adjacent casting plates 2 through a plurality of liquid guide seats 43, which is convenient for each casting plate 2 to provide a vibrating effect on the concrete inside at the same time, so that the concrete as a whole flows sufficiently. Among them, after the casting is completed, the liquid supply pipe can inject a constant-temperature medium into the circulation bin 25 at a low pressure, and the hardening temperature of the concrete can be accurately controlled through closed-loop flow.

[0054] An adjusting cylinder 44 is vertically connected to the connecting plate 18, and the output end of the adjusting cylinder 44 is connected to the fine-tuning plate 42, which can vertically slide and adjust the fine-tuning plate 42. On the one hand, it ensures the sealed docking of the liquid guide seat 43 and the casting plate 2, and on the other hand, it can quickly switch the sealed docking of the liquid guide seat 43 and different casting plates 2, improving the flexibility of the vibrating operation during casting.

[0055] In this embodiment, a method for casting test blocks for testing the bond performance of reinforced concrete includes the following steps:

[0056] S1. According to the pouring height, multiple groups of pouring plates 2 are stacked and fixed along the axial direction of the support column 12. Each layer of pouring plates 2 can be connected by quick-release bolts. Rubber sealing rings are set between layers to ensure that the vertical error of the cavity is ≤1mm / m. The guard plate seat 13 is used to support the formation of a layered concrete pouring cavity. An impermeable membrane is laid inside to prevent leakage. The impermeable membrane adopts a polymer membrane (such as HDPE or PTFE) with a thickness of ≥0.5mm, which has the characteristics of corrosion resistance and high tensile strength. The joints are sealed by hot-melt welding process, and then the cover plate 15 is sealed on the upper pouring plate 2;

[0057] S2. Based on the precast shape, the outer sliding frame 16 is controlled to slide vertically along the frame body 11, so that the top support cylinder on the outer sliding frame 16 pushes and adjusts the tooth plate 39 in each casting plate 2, thereby driving the tooth plate 37 to rotate, and the inner adjustment plate 34 is pushed by the guide rod 38 to slide and expand, thereby adjusting the inner diameter of the casting cavity;

[0058] S3, pouring concrete through the top pouring pipe 14, the concrete gradually fills the pouring cavity, and the pouring speed is 0.5m³ / h-1.0m³ / h; during the pouring process, the outer sliding frame 16 is adjusted to move upward synchronously with the pouring height, wherein the circulating liquid delivery unit 4 can be sealed and docked with each pouring plate 2, thereby driving the turbine blades 26 in the pouring plate 2 to rotate at high speed through the hydraulic action, and during the rotation, the diameter adjustment unit 3 is axially vibrated through the tooth edge bite action of the top tooth ring 24 and the toothed disc 23, and at the same time, the vibration guide rod 6 can provide radial vibration to the inner adjustment plate 34 during the rotation of the dial ring 62, and its axial vibration frequency is 20Hz-50Hz, and the radial vibration frequency is 15Hz-30Hz;

[0059] S4. After the initial pouring is completed, the liquid supply pipe injects a constant temperature medium into the circulation chamber 25 to accurately control the concrete hardening temperature through closed-loop flow;

[0060] S5. After the curing is completed, demould the casting plates 2 one by one, and the time is 24h-48h (constant temperature 20℃±2℃).

[0061] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A test block casting device for testing the bonding performance of reinforced concrete, characterized in that: It includes: A bottom plate (1), with a frame body (11) vertically connected to the top of the bottom plate; A support column (12) is arranged and fixed in the middle of the base plate (1), and a guard plate seat (13) is installed at the upper end of the support column (12); A plurality of casting plates (2) are arranged in an array, and the plurality of casting plates (2) are distributed along the axial direction of the support column (12) and fixed above the guard plate seat (13); A pouring pipe (14) is vertically arranged in the middle of the upper end surface of the frame body (11); a cover plate (15) is sealed above the pouring plate (2); and the lower end of the pouring pipe (14) is connected to the cover plate (15); A diameter adjustment unit (3) is arranged in each of the casting plates (2); An outer sliding frame (16) is slidably mounted in the frame body (11); a support column (17) is vertically fixed to one side of the frame body (11); a connecting plate (18) is slidably mounted on the support column (17); and the connecting plate (18) is fixed to the outer sliding frame (16); A circulating liquid supply unit (4) is installed on the connecting plate (18); a liquid inlet channel (21) and a liquid discharge channel (22) are provided on one side of the casting plate (2); and the circulating liquid supply unit (4) is sealed and butted against the liquid inlet channel (21) and the liquid discharge channel (22).

2. A test block casting device for testing the bonding performance of reinforced concrete according to claim 1, characterized in that: The casting plates (2) are sealed and combined to form a concrete casting chamber, and an anti-seepage membrane is provided in the concrete casting chamber; the cover plate (15) is provided with a steel bar insertion hole (19).

3. A test block casting device for testing the bonding performance of reinforced concrete according to claim 1, characterized in that: The diameter adjustment unit (3) comprises: An upper pressing plate (31) whose center is arranged inside the casting plate (2), and a lower pressing plate (32) is installed on the casting plate (2) below the upper pressing plate (31); Positioning holes (33) are circumferentially formed on the upper pressure plate (31) and the lower pressure plate (32); The inner adjustment plates (34) are multiple and distributed around a circle. An axle pin (35) is fixed symmetrically at one end of each inner adjustment plate (34) and is rotatably connected to the positioning hole (33) via the axle pin (35). The cross section of the inner adjustment plate (34) is an arc-shaped structure.

4. A test block casting device for testing the bonding performance of reinforced concrete according to claim 3, characterized in that: The end of each inner adjustment plate (34) is slidably sleeved with an adjacent inner adjustment plate (34), and upper and lower end surfaces of the inner adjustment plate (34) are provided with a slide groove (36), and the adjacent inner adjustment plates (34) are slidably connected to the slide groove (36) via a guide shaft; A toothed disc (37) is rotatably arranged inside the casting plate (2), a guide rod (38) is eccentrically connected to the toothed disc (37), one end of the guide rod (38) is connected to one of the inner adjustment plates (34), a toothed plate (39) is slidably arranged inside the casting plate (2), the toothed plate (39) is meshed with the toothed disc (37) for transmission, and a supporting cylinder is arranged on a side of the outer sliding frame (16) away from the connecting plate (18), the output end of the supporting cylinder is in abutment with the toothed plate (39).

5. A test block casting device for testing the bonding performance of reinforced concrete according to claim 4, characterized in that: A plurality of inner rods (5) are distributed on the circumference below the upper pressure plate (31), each of the inner rods (5) vertically slides through the casting plate (2), and the lower end of the inner rod (5) is fixed to the lower pressure plate (32), and a spring is sleeved on the inner rod (5), and the upper end of the spring abuts against the casting plate (2); A toothed disc (23) is fixed on the inner rod (5) in the casting plate (2), and a top toothed ring (24) is rotatably arranged in the casting plate (2), so that the top toothed ring (24) and the toothed disc (23) are staggered or in contact with each other.

6. A test block casting device for testing the bonding performance of reinforced concrete according to claim 5, characterized in that: A circulation chamber (25) is provided in the casting plate (2), turbine blades (26) are rotatably arranged in the circulation chamber (25), and the liquid inlet channel (21) and the liquid discharge channel (22) are both connected to the circulation chamber (25); A sealing ring (51) is rotatably arranged above the circulating chamber (25) in the casting plate (2), and a plurality of coupling shafts (52) are fixed in the sealing ring (51). The upper ends of the coupling shafts (52) are connected to the top gear ring (24), and the lower ends of the coupling shafts (52) are fixed to the turbine blades (26).

7. A test block casting device for testing the bonding performance of reinforced concrete according to claim 6, characterized in that: A plurality of vibration guide rods (6) are distributed on the inner circumference of the casting plate (2), each of the vibration guide rods (6) being radially slidably arranged in the casting plate (2), and a compression spring is sleeved on the vibration guide rod (6), and the compression spring causes the vibration guide rod (6) to slide toward a side close to the center of the casting plate (2) through the action of elastic force; An inclined block (61) is fixed to one end of the vibration guide rod (6), and a shifting ring (62) is coaxially fixed to the top gear ring (24), and a plurality of convex edges are distributed on the outer wall of the shifting ring (62), and the convex edges are in sliding contact with the inclined block (61).

8. A test block casting device for testing the bonding performance of reinforced concrete according to claim 1, characterized in that: The circulating liquid feeding unit (4) comprises: A fixed shaft (41) is vertically fixed on the connecting plate (18), and a fine-tuning plate (42) is slidably mounted on the fixed shaft (41); A plurality of liquid guide seats (43) are arranged vertically and fixed on the fine-tuning plate (42), each of the liquid guide seats (43) being in sealing contact with the corresponding casting plate (2), and each of the liquid guide seats (43) is connected to a liquid supply pipe; The regulating cylinder (44) is vertically connected to the connecting plate (18), and the output end of the regulating cylinder (44) is connected to the fine-tuning plate (42).

9. A method for casting a test block for testing the bonding performance of reinforced concrete, which adopts the test block casting device for testing the bonding performance of reinforced concrete as claimed in claim 7, characterized in that: It includes the following steps: S1, stacking and fixing a plurality of casting plates (2) axially along the support column (12) according to the casting height, supporting the formation of a layered concrete casting cavity through a guard plate seat (13), laying an anti-seepage membrane inside to prevent leakage, and then sealing the upper casting plate (2) with a cover plate (15); S2. Based on the precast shape, the outer sliding frame (16) is controlled to slide vertically along the frame body (11), so that the top support cylinder on the outer sliding frame (16) pushes and adjusts the tooth plate (39) in each casting plate (2), thereby driving the tooth plate (37) to rotate, and the inner adjustment plate (34) is pushed and unfolded under the push of the guide rod (38), thereby adjusting the inner diameter size of the casting cavity; S3, pouring concrete through the top pouring pipe (14), and the concrete gradually fills the pouring cavity; during the pouring process, the outer sliding frame (16) is adjusted to move upward synchronously with the pouring height, wherein the circulating liquid delivery unit (4) can be sealed and docked with each pouring plate (2), thereby driving the turbine blades (26) in the pouring plate (2) to rotate at high speed through hydraulic action, and during the rotation, the diameter adjustment unit (3) is axially vibrated through the tooth bite action of the top tooth ring (24) and the tooth plate (23), and at the same time, the vibration guide rod (6) can provide radial vibration to the inner adjustment plate (34) during the rotation of the dial ring (62); S4. After the initial pouring is completed, the liquid supply pipe injects a constant temperature medium into the circulation chamber (25) to accurately control the concrete hardening temperature through closed-loop flow; S5. After the curing is completed, the casting plates (2) are demoulded one by one.

Images