A mortar bonding test piece preparation device and method

Abstract

The present application relates to building material test equipment technical field, disclose a kind of mortar bonding test piece preparation device and method, including bottom plate, multiple matrix forming frames are equipped on bottom plate, the bottom of bottom plate is slidably connected with receiving plate, receiving plate can be pulled along horizontal direction, for closing or opening the bottom of matrix forming frame;Multiple page turning steel plates are rotatably connected to the side surface of bottom plate.The present application is by being provided with multiple matrix forming frames on bottom plate, and rotatably connecting multiple layers of page turning steel plates on the side surface of bottom plate, each layer of page turning steel plate is equipped with bonding layer forming frame corresponding to matrix forming frame one by one, bonding layer forming cavity depth is adjusted by selecting different number of page turning steel plates to overturn and superimpose, the thickness of bonding layer is flexibly adjusted, while multiple forming frames correspond one by one, multiple test pieces can be prepared at a time, effectively solve the problem that only single test piece can be prepared in single time in existing device, bonding layer thickness is fixed and cannot be adjusted, so as to improve test piece preparation efficiency and comparability of test data.

Description

Technical Field

[0001] This invention relates to the field of building material testing equipment technology, and in particular to a mortar bonding specimen preparation device and method. Background Technology

[0002] In the field of construction engineering, mortar is often used as a functional external surface coating for concrete, including thermal insulation mortar, waterproof mortar, and anti-seepage mortar. The primary prerequisite for functional mortar to be used as an external surface coating for concrete is that the two have reliable bonding performance. Therefore, it is necessary to test it through the mortar tensile bond strength test. Currently, the bond strength specimen preparation device on the market usually includes a molding frame and a base plate. The molding frame is fixed in size as 40mm×40mm×6mm. When using it, firstly, cement mortar is poured into an independent substrate preparation mold, vibrated to compact it, and cured to the specified age to form a substrate block of 70mm×70mm×20mm. Then, the upper surface of the substrate block is ground smooth. Next, the base plate is placed horizontally, the substrate block is placed on the base plate, and the molding frame is placed at the center of the upper surface of the substrate block. Mortar material is poured into the molding frame, vibrated to compact it, and the surface is scraped smooth. After curing, the molding frame is pulled vertically upward to demold and remove the specimen.

[0003] However, since the thickness of the bonding layer in the existing device is determined by the fixed height of the molding frame, if the thickness of the bonding layer is to be changed, molding frames of different thicknesses need to be made again. This causes operators to repeatedly perform pouring, vibration, curing and demolding operations, which is not only extremely inefficient and time-consuming, but also makes it difficult to ensure the consistency of molding conditions for each specimen after multiple operations. This introduces batch-to-batch errors that affect the reliability of test data, making it difficult to meet the actual needs of diversified thickness testing and batch specimen preparation in mortar bonding performance research. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides an apparatus and method for preparing mortar-bonded specimens.

[0005] This invention provides a mortar-bonded specimen preparation apparatus, comprising: A base plate is provided with multiple base molding frames. A support plate is slidably connected to the bottom of the base plate. The support plate can be pulled out in the horizontal direction to close or open the bottom of the base molding frames. Multiple flip-up steel plates are rotatably connected to the side of the base plate. The multiple flip-up steel plates are stacked sequentially from bottom to top. Each of the multiple flip-up steel plates is provided with multiple adhesive layer forming frames that correspond one-to-one with the substrate forming frame. By flipping different numbers of the flip-up steel plates sequentially above the base plate and stacking them, the adhesive layer forming frames correspond vertically with the substrate forming frames, forming an adhesive layer forming cavity with a set depth to adjust the forming thickness of the adhesive layer.

[0006] Preferably, the number of the left and right steel plates is 5 each; When the thicknesses of the multiple flip-up steel plates are different, the thickness of the first layer of steel plate on the left side from bottom to top is 6mm, the thickness of the remaining layers of steel plate is 2mm, and the thickness of each layer of steel plate on the right side is 3mm.

[0007] Preferably, the left and right steel plates are rotatably connected to the base plate via U-shaped rings, and telescopic tubes slide at the ends of the U-shaped rings, with the two telescopic tubes respectively hinged to the base plate, the left steel plate, and / or the right steel plate.

[0008] Preferably, the size of the adhesive layer forming frame is smaller than the size of the substrate forming frame, and the left steel plate / or right steel plate is hinged to the side of the base plate through the U-shaped ring, so that when the left steel plate / or right steel plate is flipped to the top of the base plate, it is positioned in a preset position. The adhesive layer forming frame is vertically corresponding to the substrate forming frame and is located in the central area of ​​the substrate forming frame.

[0009] Preferably, the bottom of the base plate is provided with a vibration mechanism, which includes a vibrating motor and a spring. The vibrating motor is fixedly installed on the bottom surface of the base plate, and the spring is disposed between the vibrating motor and the base plate. The vibrating motor generates high-frequency vibration, which is buffered and transmitted by the spring so that the vibration is evenly applied to the base plate, for vibrating and compacting the concrete or mortar poured in the base molding frame and the bonding layer molding frame.

[0010] A method for preparing a mortar-bonded specimen preparation device includes the following steps: The receiving plate is pushed into the bottom of the base plate to close the bottom of the substrate forming frame. Then, concrete or mortar material is poured into the substrate forming frame of the base plate to form a substrate test block after molding. According to the thickness requirements of the target mortar bonding layer, select the corresponding number of the flip-up steel plates, and flip the selected flip-up steel plates one by one to the top of the base plate, so that the flip-up steel plates are stacked one by one from bottom to top, and the bonding layer forming frame on each flip-up steel plate is aligned with the substrate forming frame to form a bonding layer forming cavity of a set depth. Mortar material is poured into the bonding layer forming cavity enclosed by the bonding layer forming frame to form a mortar bonding layer; After the casting is completed, allow it to stand and cure until the specimen is formed. Then, flip the steel plates one by one to expose the bonded specimen. Finally, pull out the receiving plate to remove the specimen from the substrate molding frame, thus completing the specimen preparation.

[0011] Compared with the prior art, the technical solution provided by the embodiments of the present invention has the following advantages: The present invention sets multiple substrate forming frames on the base plate and rotatably connects multiple layers of flip-page steel plates on the side of the base plate. Each layer of flip-page steel plates is provided with an adhesive layer forming frame corresponding to the substrate forming frame. According to the required adhesive layer thickness, the corresponding number of flip-page steel plates can be selected and flipped sequentially to the top of the base plate for stacking, so that the adhesive layer forming frame and the substrate forming frame correspond vertically to form an adhesive layer forming cavity of a set depth. Thus, substrate specimen forming and adhesive layer forming can be realized simultaneously on the same device. Moreover, the adhesive layer thickness can be adjusted by stacking different numbers of flip-page steel plates, which effectively solves the problem that the existing device can only prepare a single specimen at a time and the adhesive layer thickness is fixed and cannot be adjusted. At the same time, multiple substrate forming frames correspond one-to-one with multiple adhesive layer forming frames, and multiple specimens can be prepared at one time, thereby greatly improving the specimen preparation efficiency and the comparability of test data. Attached Figure Description

[0012] Figure 1 This is a schematic plan view of the overall structure of a mortar bonding specimen preparation device provided by the present invention; Figure 2 An overall structural elevation view provided for this invention; Figure 3 This is a schematic diagram of the U-shaped ring structure provided by the present invention; Figure 4 This is a schematic diagram of the U-shaped ring portion structure provided by the present invention; Figure 5 This is a schematic diagram of the overall structure of the U-shaped ring provided by the present invention; Figure 6 This is a schematic diagram of the base plate structure provided by the present invention; Figure 7 A schematic diagram of the page-turning steel plate structure provided by the present invention; Figure 8 This is a schematic diagram of the overall structure fabrication provided by the present invention; Figure 9 Schematic diagram of the specimen structure provided by the present invention Figure 1 ; Figure 10 Schematic diagram of the specimen structure provided by the present invention Figure 2 ; Figure 11 Schematic diagram of the specimen structure provided by the present invention Figure 3 ; Figure 12 Schematic diagram of the specimen structure provided by the present invention Figure 4 .

[0013] Explanation of reference numerals in the attached figures: 1. Base plate; 11. Matrix molding frame; 2. Flip-over steel plate; 21. Adhesive layer forming frame; 22. Left side steel plate; 23. Right side steel plate; 3. Vibration mechanism; 4. Support plate; 5. U-shaped ring; 51. Expansion tube. Detailed Implementation

[0014] The following detailed description of a specific embodiment of the present invention is provided in conjunction with the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0015] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solution of this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0016] The present invention will be described below through several specific embodiments. To keep the following description of the embodiments clear and concise, detailed descriptions of known functions and components may be omitted. When any component of an embodiment of the present invention appears in more than one drawing, the component may be represented by the same reference numerals in each drawing.

[0017] Example 1 like Figures 1-8 As shown, an embodiment of the present invention provides a mortar bonding specimen preparation device, comprising: The base plate 1 has multiple base forming frames 11. The bottom of the base plate 1 is slidably connected to a support plate 4. The support plate 4 can be pulled out in the horizontal direction to close or open the bottom of the base forming frames 11. Multiple flip-up steel plates 2 are rotatably connected to the side of the base plate 1. The multiple flip-up steel plates 2 are stacked sequentially from bottom to top. Each of the multiple flip-up steel plates 2 is provided with multiple adhesive layer forming frames 21 that correspond one-to-one with the base forming frame 11. By flipping different numbers of flip-up steel plates 2 sequentially to the top of the base plate 1 and stacking them, the adhesive layer forming frames 21 correspond vertically with the base forming frames 11 to form an adhesive layer forming cavity with a set depth, so as to adjust the forming thickness of the adhesive layer. The receiving plate 4 is pushed into the bottom of the base plate 1 to close the base molding frame 11. Concrete or mortar is poured into the base molding frame 11 and compacted by vibration. After curing and hardening, a base test block is formed. Then, according to the required adhesive layer thickness, a corresponding number of flip steel plates 2 are selected from multiple flip steel plates 2 and flipped sequentially to the top of the base plate 1 for stacking. The adhesive layer molding frames 21 on each flip steel plate 2 correspond one-to-one with the base molding frames 11 on the base plate 1, forming an adhesive layer molding cavity with a set depth. Then, the adhesive layer molding cavity is filled with adhesive layer molding material. The mortar material is poured into the middle and vibrated to compact it. After curing and hardening, a mortar bonding layer is formed. Finally, each of the flip-up steel plates 2 is flipped open in sequence, and the receiving plate 4 is pulled out to open the bottom of the substrate forming frame 11. The specimen is then removed from the substrate forming frame 11, and a mortar bonding specimen with adjustable bonding layer thickness and integrally formed substrate and bonding layer is obtained. The bonding layer thickness can be adjusted by selecting different numbers of flip-up steel plates 2 and stacking them. At the same time, multiple forming frames can be matched one-to-one to prepare multiple specimens at one time, thereby effectively improving the specimen preparation efficiency and thickness adjustment flexibility.

[0018] Furthermore, such as Figures 1-8 As shown, the flip-up steel plate 2 includes a left steel plate 22 and a right steel plate 23. The left steel plate 22 and the right steel plate 23 are respectively located on opposite sides of the base plate 1. The flip-up steel plate 2 is divided into a left steel plate 22 and a right steel plate 23 and is respectively located on opposite sides of the base plate 1, so that the flip-up steel plate 2 can be flipped from both sides of the base plate 1 to the top of the base plate 1 for stacking. This effectively reduces the number of stacked steel plates on one side and avoids the flip-up steel plate 2 being stacked too high, which would affect the stability of operation. At the same time, it is convenient to take steel plates of different thicknesses from both sides for combination and stacking.

[0019] Furthermore, such as Figures 1-8 As shown, there are 5 steel plates 22 on the left and 5 steel plates 23 on the right. When the thicknesses of the multiple flip-up steel plates are different, the thickness of the first layer of steel plate 22 from bottom to top on the left side is 6mm, and the thickness of the remaining layers is 2mm. The thickness of each layer of steel plate 23 on the right side is 3mm. By selecting steel plates of different thicknesses and quantities from the left and right sides and combining them, various bonding layer thicknesses can be flexibly adjusted within the range of 6mm to 24mm, covering the standard thickness of 6mm and various non-standard thickness requirements. Moreover, the differentiated design of the thickness specifications of the steel plates on the left and right sides effectively improves the diversity of thickness combinations and the flexibility of adjustment.

[0020] Furthermore, such as Figures 1-8As shown, the left steel plate 22 and the right steel plate 23 are rotatably connected to the base plate 1 via U-shaped rings 5. Telescopic tubes 51 slide at the ends of the U-shaped rings 5. The two telescopic tubes 51 are hinged to the base plate 1, the left steel plate 22, and / or the right steel plate 23, respectively. One end of the U-shaped ring 5 is fixed to the side of the base plate 1, and the other end is rotatably connected to the page-turning steel plate 2. The U-shaped ring 5 serves as the rotation axis of the page-turning steel plate 2, enabling the independent and free flipping of each layer of page-turning steel plate 2. Each layer of page-turning steel plate 2 is connected to the base plate 1 via its own U-shaped ring 5, operating independently and without interference. Furthermore, the telescopic tubes 51 at the ends of the U-shaped ring 5 extend and retract within the U-shaped ring 5 with the flipping angle, adaptively adjusting the distance between the hinge points during the flipping process. This ensures that the page-turning steel plate 2 remains stably connected at any flipping angle, preventing jamming or shaking, thus ensuring smooth flipping.

[0021] Furthermore, such as Figures 1-8 As shown, the size of the adhesive layer forming frame 21 is smaller than that of the substrate forming frame 11. The left steel plate 22 / or the right steel plate 23 is hinged to the side of the base plate 1 through a U-shaped ring 5, so that when the left steel plate 22 / or the right steel plate 23 is flipped to the top of the base plate 1, it is positioned in a preset position. The adhesive layer forming frame 21 is vertically corresponding to the substrate forming frame 11 and is located in the central area of ​​the substrate forming frame 11. The size of the adhesive layer forming frame 21 is smaller than that of the substrate forming frame 11. The flipping steel plate 2 is hinged to the side of the base plate 1 through a U-shaped ring 5, so that when the flipping steel plate 2 is flipped to the top of the base plate 1, it is positioned in a preset position. This ensures that the adhesive layer forming frame 21 is vertically corresponding to the substrate forming frame 11 and is located in its central area, ensuring that the adhesive layer is centered on the upper surface of the substrate specimen, avoiding the adhesive layer shift that would cause the specimen to be subjected to eccentric force, thereby ensuring the accuracy of the bonding strength test results.

[0022] Furthermore, such as Figures 1-8 As shown, a vibration mechanism 3 is provided at the bottom of the base plate 1. The vibration mechanism 3 includes a vibrating motor and a spring. The vibrating motor is fixedly installed on the bottom surface of the base plate 1, and the spring is set between the vibrating motor and the base plate 1. The vibrating motor generates high-frequency vibration, which is buffered and transmitted by the spring so that the vibration is evenly applied to the base plate 1. This is used to vibrate and compact the concrete or mortar poured in the substrate forming frame 11 and the bonding layer forming frame 21. The vibrating motor is fixed to the bottom surface of the base plate 1 and generates high-frequency vibration. The vibration is buffered and transmitted by the spring so that the vibration is evenly applied to the base plate 1. This vibrates and compacts the concrete or mortar in the substrate forming frame 11 and the bonding layer forming frame 21, effectively removing air bubbles inside the material, ensuring that the specimen structure is uniform and dense, without pores or defects, thereby ensuring the accuracy of the bonding strength test results.

[0023] like Figures 1-8 As shown, a method for preparing a mortar-bonded specimen preparation device includes the following steps: Matrix block molding: Push the receiving plate 4 into the bottom of the base plate 1 to close the bottom of the matrix molding frame 11; pour concrete or mortar material into the matrix molding frame 11 of the base plate 1, start the vibrating motor of the vibration mechanism 3 to generate high-frequency vibration, and through the buffer and transmission of the spring, make the vibration evenly act on the base plate 1, fully vibrate and compact the poured material, effectively remove air bubbles inside the material, and let it stand for curing until the material hardens and forms a matrix block; Selection and stacking of flip-over steel plates: Based on the thickness requirements of the target mortar bonding layer, select the corresponding number and thickness of flip-over steel plates 2 from the left steel plate 22 and the right steel plate 23. When the thicknesses of multiple flip-over steel plates are different, the first layer of the left steel plate 22 from bottom to top has a thickness of 6mm, and the thickness of each subsequent layer is 2mm. The thickness of each layer of the right steel plate 23 is 3mm. By selecting and stacking flip-over steel plates 2 of different thicknesses and quantities, flexible adjustment of various bonding layer thicknesses can be achieved. The selected flip-over steel plates 2 are flipped sequentially to the bottom using the U-shaped ring 5. Above the plate 1, the flip steel plates 2 are stacked sequentially from bottom to top. The adhesive layer forming frame 21 on each flip steel plate 2 corresponds one-to-one with the base forming frame 11 on the base plate 1. The adhesive layer forming frame 21 is located in the central area of ​​the base forming frame 11, forming an adhesive layer forming cavity with a set forming depth. During the flipping process, the telescopic tube 51 at the port of the U-shaped ring 5 extends and retracts within the U-shaped ring 5 with the flipping angle, adapting to the change in the hinge point spacing during the flipping process, ensuring that the flip steel plates 2 maintain a stable connection at any flipping angle, and avoiding jamming or shaking. Mortar bonding layer pouring: mortar material is poured into the bonding layer forming cavity enclosed by the bonding layer forming frame 21. The vibrating motor of the vibration mechanism 3 is started to vibrate and compact the mortar material, so that the mortar fills the bonding layer forming cavity evenly and removes air bubbles, forming a mortar bonding layer that is tightly attached to the upper surface of the substrate test block and has a uniform thickness. Static curing: After the casting is completed, the entire device is statically cured for more than 24 hours until the substrate test block and the mortar bonding layer are completely hardened and formed; Flipping steel plates open: Flip each of the stacked flipping steel plates 2 in sequence to fully expose the prepared bonding specimen; Demolding and removal: Pull the receiving plate 4 on the bottom surface of the base plate 1 outward in the horizontal direction so that the bottom of the substrate molding frame 11 is no longer closed and the bottom of the specimen is no longer supported and is suspended in the air. The bonded specimen can be easily removed from the substrate molding frame 11 to complete the specimen preparation.

[0024] Example 2 like Figure 9 As shown, an example of working condition verification is performed based on Example 1, with a target adhesive layer thickness of 18 mm; In this embodiment, the thickness of the first layer of the left steel plate 22 from bottom to top is 6mm, and the thickness of each of the remaining layers is 2mm. The thickness of each layer of the right steel plate 23 is 3mm. First, the receiving plate 4 is pushed into the bottom of the base plate 1 to close the bottom of the substrate forming frame 11. Then, concrete or mortar material is poured into the substrate forming frame 11 of the base plate 1, the vibration mechanism 3 is started to vibrate and compact it, and it is left to cure until it hardens and forms a substrate test block. After the substrate specimen is formed, the three layers of steel plates (each layer is 2mm thick) of the left steel plate 22 are flipped over to the top of the base plate 1 in sequence, so that the bonding layer forming frame 21 on the steel plate corresponds vertically to the substrate forming frame 11 on the base plate 1, and the bonding layer forming frame 21 is located in the central area of ​​the substrate forming frame 11, forming a 6mm thick bonding layer forming cavity. Subsequently, the four steel plates (each 3mm thick) of the right steel plate 23 are flipped over and stacked on top of the base plate 1, so that the four right steel plates 23 are arranged from bottom to top. The bonding layer forming frame 21 on each layer is vertically aligned with the base forming frame 11, and the bonding layer forming frame 21 is located in the central area of ​​the base forming frame 11. The four 3mm thick layers are stacked together to a total thickness of 12mm. Together with the aforementioned 6mm thickness, a total bonding layer forming cavity with a thickness of 18mm is formed.

[0025] Mortar material is poured into the 18mm thick bonding layer forming cavity, and the vibration mechanism 3 is started to vibrate and compact it. It is then left to cure until the mortar bonding layer is completely hardened and formed. Then, the stacked flip steel plates 2 are flipped open in sequence, and the receiving plate 4 is pulled out to open the bottom of the substrate forming frame 11. The specimen is then removed from the substrate forming frame 11 to obtain a mortar bonding specimen with a bonding layer thickness of 18mm.

[0026] This embodiment achieves the preparation of an 18mm thick adhesive layer by combining and stacking three 2mm steel plates on the left and four 3mm steel plates on the right, demonstrating the flexibility of using the steel plates on both sides together.

[0027] Example 3 like Figure 10 As shown, another working condition verification example is performed based on Example 1, with a target adhesive layer thickness of 8 mm; In this embodiment, the receiving plate 4 is pushed into the bottom of the base plate 1 to close the bottom of the substrate forming frame 11. Then, concrete or mortar material is poured into the substrate forming frame 11 of the base plate 1, the vibration mechanism 3 is started to vibrate and compact it, and it is left to cure until it hardens and forms a substrate test block. After the substrate specimen is formed, only the left steel plate 22 is used for stacking. The first four layers of steel plates (each layer is 2mm thick) of the left steel plate 22 are flipped over to the top of the base plate 1 for stacking. The four layers of left steel plates 22 are arranged from bottom to top. The bonding layer forming frame 21 on each layer corresponds to the substrate forming frame 11 on the base plate 1 one by one, and the bonding layer forming frame 21 is located in the central area of ​​the substrate forming frame 11. The four steel plates are stacked with a total thickness of 2mm+2mm+2mm+2mm+8mm to form an 8mm thick bonding layer forming cavity. Mortar material is poured into the 8mm thick bonding layer forming cavity, and the vibration mechanism 3 is started to vibrate and compact it. It is left to cure until the mortar bonding layer is completely hardened and formed. Then, the stacked flip-up steel plates 2 are flipped open one by one, and the receiving plate 4 is pulled out to open the bottom of the base forming frame 11. The specimen is removed from the base forming frame 11, and a mortar bonding specimen with a bonding layer thickness of 10mm can be obtained.

[0028] In this embodiment, the right-side steel plate 23 is not required. All the required thickness is achieved by repeatedly flipping and stacking the left-side steel plate 22, which demonstrates the flexibility of the device in thickness adjustment and the convenience of single-sided operation.

[0029] Example 4 like Figure 11 As shown, another working condition verification example is performed based on Example 1, with a target adhesive layer thickness of 16 mm; In this embodiment, the receiving plate 4 is pushed into the bottom of the base plate 1 to close the bottom of the substrate forming frame 11. Then, concrete or mortar material is poured into the substrate forming frame 11 of the base plate 1, the vibration mechanism 3 is started to vibrate and compact it, and it is left to cure until it hardens and forms a substrate test block. After the substrate specimen is formed, the first two layers of steel plates (each layer is 2mm thick) of the left steel plate 22 are flipped over to the top of the base plate 1 and stacked. The two layers are stacked for a total of 4mm. After the two layers of steel plates are positioned, they are flipped back to their initial positions. Subsequently, the four layers of steel plates (each layer is 3mm thick) of the right steel plate 23 are flipped over and stacked on top of the bottom plate 1. The four layers of 3mm thickness are stacked to a total of 12mm. The 4mm thickness of the left steel plate 22 that has been flipped over and flipped back is added to the 12mm thickness of the four layers of the right steel plate 23 to form a bonding layer forming cavity with a total thickness of 16mm. Mortar material is poured into the 16mm thick bonding layer forming cavity, and the vibration mechanism 3 is started to vibrate and compact it. It is then left to cure until the mortar bonding layer is completely hardened and formed. Subsequently, the stacked flip steel plates 2 are flipped open in sequence, and the receiving plate 4 is pulled out to open the bottom of the substrate forming frame 11. The specimen is then removed from the substrate forming frame 11 to obtain a mortar bonding specimen with a bonding layer thickness of 16mm.

[0030] This embodiment achieves the preparation of a 16mm thick adhesive layer by combining and stacking two layers of steel plates on the left and four layers of steel plates on the right, further verifying the device's adjustability under complex thickness combinations. Example 5 like Figure 12 As shown, another working condition verification example is performed based on Example 1, with a target adhesive layer thickness of 12 mm; In this embodiment, the receiving plate 4 is pushed into the bottom of the base plate 1 to close the bottom of the substrate forming frame 11. Then, concrete or mortar material is poured into the substrate forming frame 11 of the base plate 1, the vibration mechanism 3 is started to vibrate and compact it, and it is left to cure until it hardens and forms a substrate test block. After the substrate specimen is formed, the left steel plate 22 is not flipped. All the required thickness is achieved by the right steel plate 23. The right steel plate 23 has five layers, each with a thickness of 3mm. The four layers of the right steel plate 23 are flipped sequentially to the top of the base plate 1 for stacking. The four 3mm thick layers are stacked to a total of 12mm, forming a 12mm thick bonding layer forming cavity. Mortar material is poured into the 12mm thick bonding layer forming cavity, and the vibration mechanism 3 is started to vibrate and compact it. It is then left to cure until the mortar bonding layer is completely hardened and formed. Subsequently, the stacked flip-up steel plates 2 are flipped open one by one, and the receiving plate 4 is pulled out to open the bottom of the substrate forming frame 11. The specimen is then removed from the substrate forming frame 11 to obtain a mortar bonding specimen with a bonding layer thickness of 12mm.

[0031] This embodiment uses only the right-side steel plate 23 for stacking, demonstrating the flexibility of the device to achieve thickness adjustment using only a single-side steel plate, while simplifying the operation process.

[0032] The above inventions are merely a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A mortar-bonded specimen preparation device, characterized in that, include: A base plate is provided with multiple base molding frames. A support plate is slidably connected to the bottom of the base plate. The support plate can be pulled out in the horizontal direction to close or open the bottom of the base molding frames. Multiple flip-up steel plates are rotatably connected to the side of the base plate. The multiple flip-up steel plates are stacked sequentially from bottom to top. Each of the multiple flip-up steel plates is provided with multiple adhesive layer forming frames that correspond one-to-one with the substrate forming frame. By flipping different numbers of the flip-up steel plates sequentially above the base plate and stacking them, the adhesive layer forming frames correspond vertically with the substrate forming frames, forming an adhesive layer forming cavity with a set depth to adjust the forming thickness of the adhesive layer.

2. The mortar bonding specimen preparation device as described in claim 1, characterized in that, The page-turning steel plate includes a left steel plate and a right steel plate, which are respectively disposed on opposite sides of the base plate.

3. The mortar bonding specimen preparation device as described in claim 2, characterized in that, The number of steel plates on the left and right sides is 5 each; When the thicknesses of the multiple flip-up steel plates are different, the thickness of the first layer of steel plate on the left side from bottom to top is 6mm, the thickness of the remaining layers of steel plate is 2mm, and the thickness of each layer of steel plate on the right side is 3mm.

4. The mortar bonding specimen preparation device as described in claim 2, characterized in that, The left and right steel plates are rotatably connected to the base plate via U-shaped rings. Each U-shaped ring has a sliding telescopic tube at its end, and the two telescopic tubes are respectively hinged to the base plate, the left steel plate, and / or the right steel plate.

5. The mortar bonding specimen preparation apparatus as described in claim 4, characterized in that, The size of the adhesive layer forming frame is smaller than the size of the substrate forming frame. The left steel plate / or the right steel plate is hinged to the side of the base plate through the U-shaped ring, so that when the left steel plate / or the right steel plate is flipped to the top of the base plate, it is positioned in a preset position. The adhesive layer forming frame is vertically corresponding to the substrate forming frame and is located in the central area of ​​the substrate forming frame.

6. The mortar bonding specimen preparation apparatus as described in claim 1, characterized in that, The bottom of the base plate is provided with a vibration mechanism, which includes a vibrating motor and a spring. The vibrating motor is fixedly installed on the bottom surface of the base plate, and the spring is disposed between the vibrating motor and the base plate. The vibrating motor generates high-frequency vibration, which is buffered and transmitted by the spring so that the vibration is evenly applied to the base plate. This is used to vibrate and compact the concrete or mortar poured into the base molding frame and the bonding layer molding frame.

7. A method for preparing a mortar-bonded specimen preparation device according to any one of claims 1-6, characterized in that, Includes the following steps: The receiving plate is pushed into the bottom of the base plate to close the bottom of the substrate forming frame. Then, concrete or mortar material is poured into the substrate forming frame of the base plate to form a substrate test block after molding. According to the thickness requirements of the target mortar bonding layer, select the corresponding number of the flip-up steel plates, and flip the selected flip-up steel plates one by one to the top of the base plate, so that the flip-up steel plates are stacked one by one from bottom to top, and the bonding layer forming frame on each flip-up steel plate is aligned with the substrate forming frame to form a bonding layer forming cavity of a set depth. Mortar material is poured into the bonding layer forming cavity enclosed by the bonding layer forming frame to form a mortar bonding layer; After the casting is completed, allow it to stand and cure until the specimen is formed. Then, flip the steel plates one by one to expose the bonded specimen. Finally, pull out the receiving plate to remove the specimen from the substrate molding frame, thus completing the specimen preparation.

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