Test block forming device for ultra-high performance concrete

Abstract

The invention relates to the technical field of concrete test block preparation, and particularly discloses a test block forming device for ultra-high performance concrete. The test block forming device comprises a supporting frame and a forming mold. A stopping piece and a supporting assembly are arranged on the top face of the supporting frame, the forming mold is placed between the stopping piece and the supporting assembly, and a forming groove is formed in the forming mold. A plurality of partition assemblies are arranged in the forming groove and arranged in the preset direction. An angle clamping assembly is arranged on the top face of the supporting frame, the top face of the angle clamping assembly protrudes out of the top face of the supporting frame, a preset clamping distance is formed between the angle clamping assembly and the stopping piece, and the top face of the angle clamping assembly abuts against the bottom face of the forming mold. The bottom of the supporting assembly is movably connected to the top face of the supporting frame, and the top of the supporting assembly abuts against the bottom face of the forming mold. By adopting the method, the preparation operation of the standard test block can be effectively simplified, and the preparation precision and the performance stability of the standard test block are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of concrete specimen preparation technology, and in particular to a specimen molding device for ultra-high performance concrete. Background Technology

[0002] Ultra-high performance concrete (UHPC) is a new type of concrete material with self-leveling properties, made from materials such as active mineral powder and high-strength fibers. The dispersion and proportion of steel fibers are the main factors affecting the flexural strength of UHPC. Different UHPC materials exhibit varying flow characteristics, slopes, and placement spacing (which determines the self-leveling distance), leading to fluctuations in steel fiber dispersion and proportion. A larger placement spacing results in more efficient construction, but a lower steel fiber proportion leads to less stable flexural strength. Typically, large UHPC model slabs are prepared and cut into standard flexural strength test blocks for testing and observation. This study investigates the relationship between flow distance and flexural strength at different slopes, determining the optimal placement spacing for performance and construction efficiency. However, the actual cutting operation is inconvenient, making it difficult to guarantee cutting accuracy and ensuring the precision of standard test block preparation. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a test block molding device for ultra-high performance concrete, which can effectively simplify the preparation of standard test blocks and ensure the preparation accuracy and performance stability of standard test blocks.

[0004] To address the aforementioned technical problems, the present invention provides a test block molding device for ultra-high performance concrete, comprising: The support frame has stoppers and support components arranged on its top surface; A molding die is placed between the stop and the support assembly. A molding groove is formed inside the molding die. Multiple partition components are provided in the molding groove. The multiple partition components are arranged along a preset direction. The partition components are used to divide the molding groove into multiple standard test block grooves. The preset direction is the length direction of the molding die or the support frame. An angle locking component is provided on the top surface of the support frame. A preset locking distance is formed between the angle locking component and the stop. The top surface of the angle locking component protrudes outward from the top surface of the support frame and abuts against the bottom surface of the forming mold to adjust the tilt angle of the forming mold. The bottom of the support component is movably connected to the top surface of the support frame, and when the molding mold is tilted, the top of the support component abuts against the bottom surface of the molding mold.

[0005] As an improvement to the above solution, the angle positioning component includes a positioning rod, which is placed on the top surface of the support frame along the width direction of the support frame, and the top surface of the positioning rod protrudes outward from the top surface of the support frame. The preset positioning distance is the distance between the positioning rod and the stop member.

[0006] As an improvement to the above solution, the top surface of the locking rod protrudes outward at a preset height relative to the top surface of the support frame, the preset height being 20mm-25mm; the angle locking assembly includes a first locking groove, a second locking groove, and a third locking groove arranged along a preset direction, the first locking groove forming a first locking distance with the stop member, the first locking distance being 1146mm-1432mm; A second locking distance is formed between the second locking groove and the stop member, and the second locking distance is 572mm-716mm; A third locking distance is formed between the third locking groove and the stop member, and the third locking distance is 381mm-477mm.

[0007] As an improvement to the above solution, the support assembly includes at least one adjusting screw, the bottom end of which is connected to the support frame, and the top end of which abuts against the bottom surface of the molding die; An operating component is provided at the bottom end of the adjusting screw. The operating component is located below the support frame and is used to adjust the preset extension length of the adjusting screw relative to the top surface of the support frame.

[0008] As an improvement to the above solution, the preset extension length is inversely proportional to the preset card position spacing.

[0009] As an improvement to the above solution, the support frame is provided with a connecting block, the adjusting screw is spirally connected to the connecting block, and the operating component is located below the connecting block.

[0010] As an improvement to the above solution, the separating component includes multiple separating parts. During concrete pouring, the separating parts are located below the forming groove. A connecting groove is formed in the forming groove at a preset angle to the preset direction. The separating parts are slidably connected to the connecting groove, and the extension height of the connecting groove is equal to the height of the forming groove.

[0011] As an improvement to the above solution, the separator is a flexible fiber cloth, and a roller is connected to the bottom surface of the molding die. The roller is located below the connecting groove, and the bottom end of the flexible fiber cloth is wound around the roller. A lifting rod is provided at the top of the flexible fiber cloth, and the lifting rod is slidably connected to the connecting groove.

[0012] As an improvement to the above solution, a lifting handle is provided at the end of the lifting rod, the connecting groove is a hollow groove, and the lifting handle passes through the connecting groove.

[0013] As an improvement to the above solution, the bottom of the support frame is provided with adjustable feet, which are vertically connected to the bottom surface of the support frame for adjusting the levelness of the molding mold; a level is provided on the top surface of the support frame.

[0014] Implementing this invention has the following beneficial effects: The test block forming device in this embodiment utilizes an angle positioning component arranged on the top surface of the support frame. With the support of the support component, it can simulate the main slope angle of concrete test block forming. Furthermore, with the assistance of the dividing component, the whole concrete test block can be divided into multiple standard test blocks before the concrete has solidified. This eliminates the need to cut the concrete test slab after the concrete has solidified, effectively simplifying the preparation of standard test blocks and ensuring the preparation accuracy and performance stability of the standard test blocks. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the test block forming device in this invention when tilted at an angle; Figure 2 This is a front view schematic diagram of the test block forming device in this invention when it is horizontal; Figure 3 This is a schematic diagram of the main structure of the support frame in this invention; Figure 4 This is a top view of the support frame structure in this invention; Figure 5 This is a three-dimensional structural diagram of the support component in this invention; Figure 6 This is a schematic diagram of the main structure of the forming mold when the separator component is pulled up in this invention; Figure 7 This is a top view of the forming mold structure when the separator component is pulled up in this invention; Figure 8 This is a schematic diagram of the connection structure between the separator assembly and the forming mold when the separator is wound in this invention; Figure 9 This is a schematic diagram of the connection structure between the separator component and the forming mold when the separator component is pulled up in this invention. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the directional terms such as up, down, left, right, front, back, inside, and outside used in this text are based solely on the accompanying drawings and are not intended to specifically limit the invention.

[0017] It should be noted that ultra-high performance concrete (UHPC) is a new type of concrete material made from materials such as active mineral powder and high-strength fibers, and it has self-leveling properties.

[0018] This invention provides a test block molding device for ultra-high performance concrete, such as... Figure 1 and Figure 2 As shown, it includes a support frame 1 and a molding mold 2. The top surface of the support frame 1 is provided with a stop 11 and a support assembly 12. The molding mold 2 is placed between the stop 11 and the support assembly 12. A molding groove 21 is formed inside the molding mold 2. Concrete can be poured into the molding groove 21 and hardened and formed in the molding groove 21.

[0019] Multiple separating components 22 are provided within the molding groove 21. These components are arranged along a preset direction, allowing any two adjacent components to form a separate test block molding space. The separating components 22 divide the molding groove 21 into multiple standard test block slots 211, enabling the concrete block to be divided into multiple standard test blocks after concrete pouring, thus ensuring the molding accuracy of the concrete test blocks. The preset direction is the length direction of the molding mold 2 or the support frame 1 (e.g., the direction of the mold 2 or the support frame 1). Figure 1 (X direction shown).

[0020] An angle positioning component 13 is provided on the top surface of the support frame 1. The top surface of the angle positioning component 13 protrudes outward from the top surface of the support frame 1. A preset positioning distance is formed between the angle positioning component 13 and the stop 11. The top surface of the angle positioning component 13 abuts against the bottom surface of the forming mold 2 to adjust the tilt angle of the forming mold 2. This allows the forming mold 2 to simulate the main slope angle during bridge deck paving and precast beam casting, facilitating the study of the relationship between the flow distance and flexural strength of concrete test blocks under different slope conditions.

[0021] The bottom of the support component 12 is movably connected to the top surface of the support frame 1, and when the molding mold 2 is tilted, the top of the support component 12 abuts against the bottom surface of the molding mold 2.

[0022] Specifically, when preparing UHRC test blocks using the test block molding device provided in this embodiment, after placing the molding mold 2 on the top surface of the support frame 1, the preset positioning distance between the angle positioning component 13 and the stop component 11 can be adjusted to allow the molding mold 2 to have different inclination slopes. For example, the molding mold 2 can be formed with an inclination angle of 1°, 2°, or 3°. By utilizing the support effect of the support component 12 on the molding mold 2, the main slope angles of the UHRC self-leveling project can be simulated, and the molding mold 2 can be stably placed on the top surface of the support frame 1. Furthermore, when pouring concrete into the molding mold 2, the concrete in the molding groove 21 can have different flow characteristics based on different inclination slopes, thereby enabling the molding mold 2 to prepare concrete simulation slabs with different slope conditions.

[0023] After the pouring is completed and the molding mold 2 is readjusted to the horizontal, the molding groove 21 is divided into multiple partitioned test block molding spaces using the partition component 22. The concrete simulation board is kept within the partitioned test block molding spaces to solidify and harden the concrete simulation board, thereby obtaining standard test blocks under different slope conditions. This facilitates subsequent performance testing using standard test blocks under different slope conditions and analysis to determine the optimal material placement spacing for performance and construction benefits.

[0024] Therefore, the test block forming device of this embodiment, by using the angle positioning component 13 arranged on the top surface of the support frame 1 and in conjunction with the supporting component 12, can simulate the main slope angle of concrete test block forming; and with the cooperation of the dividing component 22, the whole concrete test block can be divided into multiple standard test blocks before the concrete has solidified, without the need to cut the concrete test plate after the concrete has solidified, effectively simplifying the preparation operation of standard test blocks and ensuring the preparation accuracy and performance stability of standard test blocks.

[0025] It should be noted that the stop 11 and the support assembly 12 are respectively disposed on both sides of the top surface of the support frame 1 to provide placement space for the forming mold 2. For example, with Figure 1 and Figure 2 As shown as the front of the device, the stop 11 is located on the right side of the top surface of the support frame 1, and the support assembly 12 is located on the left side of the top surface of the support frame 1. When the molding die 2 forms different tilt angles, the stop 11 can provide a right-side limit stop for the molding die 2, preventing the molding die 2 from moving relative to the support frame 1 and sliding out from the right side of the support frame 1 when tilted.

[0026] In addition, such as Figure 4As shown, the stop 11 is a rectangular steel bar installed on the top surface of the support frame 1. The stop 11 can be installed on the support frame 1 by a fixed connection method such as welding or a detachable connection method such as threaded connection, which is not specifically limited here. The length of the stop 11 is preferably equal to the width of the support frame 1. For example, if the width of the support frame 1 is 500mm, the length of the stop 11 is also 500mm. The width of the stop 11 can be selectively arranged according to the actual structure, which is not specifically limited here. The height of the stop 11 is preferably higher than the bottom height of the forming groove 21 of the forming mold 2. For example, if the overall height of the forming mold 2 is 130mm and the groove depth of the forming groove 21 is 110mm, that is, the bottom height of the forming groove 21 is 20mm, then the height of the stop 11 is higher than 20mm to ensure the limiting and stopping effect of the stop 11 on the forming mold 2.

[0027] It should also be noted that the spacing between any two separating components 22 in the molding groove 21 can be adjusted according to the width of the standard test block to be prepared. For example, when the width of the standard test block is 110mm, the spacing between the two separating components 22 can be 110mm.

[0028] It should also be noted that the support frame 1 can be formed by splicing together multiple steel bars, and any two steel bars can be welded together. The width of the steel bar located below the support component 12 and the width of the steel bar located below the stop member 11 are both greater than the width of the steel bars in other positions, so as to ensure the stress on the support component 12 and the stop member 11.

[0029] In this embodiment, to facilitate adjusting the preset positioning distance between the angle positioning component 13 and the stop member 11, the angle positioning component 13 includes a positioning rod 131. The positioning rod 131 is movably connected to the top surface of the support frame 1. The positioning rod 131 is placed on the top surface of the support frame 1 along the width direction of the support frame 1, and the top surface of the positioning rod 131 protrudes outward from the top surface of the support frame 1. The preset positioning distance is the distance between the positioning rod 131 and the stop member 11. Therefore, by adjusting the specific placement position of the positioning rod 131 on the top surface of the support frame 1, the preset positioning distance between the positioning rod 131 and the stop member 11 can be adjusted accordingly, allowing the positioning rod 131 to tilt and lift the molding mold 2, thereby ensuring that the molding mold 2 can have different slope angles.

[0030] It should be noted that the length of the locking rod 131 is preferably greater than or equal to the width of the forming mold 2. For example, when the width of the forming mold 2 is 400mm, the length of the locking rod 131 is greater than or equal to 400mm, so that the locking rod 131 can extend along the width direction of the support frame 1 and ensure that the entire locking rod 131 abuts against the bottom surface of the forming mold 2. This ensures that the locking rod 131 can provide a uniform support contact area for the bottom surface of the forming mold 2, ensuring the support stability of the locking rod 131 for the forming mold 2 and preventing the forming mold 2 from becoming unstable and tipping over during casting.

[0031] As a specific example, such as Figures 1 to 3 As shown, the locking rod 131 can be placed on the top surface of the support frame 1 through the slot structure to ensure the stability of the locking rod 131 on the top surface of the support frame 1. The number of slots preferably corresponds to the actual required tilt angle of the molding die 2. For example, when the molding die 2 needs to have three tilt angles (1°, 2°, and 3°), the top surface of the support frame 1 preferably forms three slots, i.e. Figure 3 As shown, the angle positioning component 13 includes a first positioning groove 132, a second positioning groove 133 and a third positioning groove 134 arranged along a preset direction, so that the first positioning groove 132 is set as a 1° positioning groove, the second positioning groove 133 is set as a 2° positioning groove and the third positioning groove 134 is set as a 3° positioning groove, which corresponds to the positioning rod 131 to realize the angle adjustment of the forming mold 2.

[0032] Specifically, such as Figure 1 and Figure 3 As shown, the top surface of the locking rod 131 protrudes outward by a preset height H1 relative to the top surface of the support frame 1. The preset height H1 is 20mm-25mm. A first locking distance D1 is formed between the first locking groove 132 and the stop member 11. The first locking distance D1 is 1146mm-1432mm. That is, the ratio of the preset height H1 of the locking rod 131 to the first locking distance D1 is distributed between 0.014 and 0.022. At this time, after the molding mold 2 is tilted and lifted by the locking rod 131, the tilt angle of the molding mold 2 is 0.8°-1.25°, which effectively ensures that the molding mold 2 meets the process requirement of a 1° tilt angle.

[0033] The second locking groove 133 and the stop member 11 form a second locking distance D2, which is 572mm-716mm. That is, the ratio of the preset height H1 of the outward protrusion of the locking rod 131 to the second locking distance D2 is distributed between 0.028 and 0.044. At this time, after the molding mold 2 is tilted and lifted by the locking rod 131, the tilt angle of the molding mold 2 is 1.6°-2.5°, which effectively ensures that the molding mold 2 meets the process requirement of a 2° tilt angle.

[0034] The third positioning groove 134 and the stop member 11 form a third positioning distance D3, which is 381mm-477mm. That is, the ratio of the preset height H1 of the outward protrusion of the positioning rod 131 to the first positioning distance D1 is distributed between 0.042 and 0.065. At this time, after the molding mold 2 is tilted and lifted by the positioning rod 131, the tilt angle of the molding mold 2 is 2.4°-3.75°, which effectively ensures that the molding mold 2 meets the process requirement of a 3° tilt angle.

[0035] In the first optional embodiment, the preset height H1 of the outward protrusion of the locking rod 131 is 20mm. At this time, the first locking distance D1 is 1146mm, the second locking distance D2 is 572mm, and the third locking distance D3 is 381mm.

[0036] In the second optional embodiment, the preset height H1 of the outward protrusion of the locking rod 131 is 21mm. At this time, the first locking distance D1 is 1203mm, the second locking distance D2 is 601mm, and the third locking distance D3 is 401mm.

[0037] In the third optional embodiment, the preset height H1 of the outward protrusion of the locking rod 131 is 22mm. At this time, the first locking distance D1 is 1260mm, the second locking distance D2 is 630mm, and the third locking distance D3 is 420mm.

[0038] In the fourth optional embodiment, the preset height H1 of the outward protrusion of the locking rod 131 is 23mm. At this time, the first locking distance D1 is 1318mm, the second locking distance D2 is 659mm, and the third locking distance D3 is 439mm.

[0039] In the fifth optional embodiment, the preset height H1 of the outward protrusion of the locking rod 131 is 24mm. At this time, the first locking distance D1 is 1375mm, the second locking distance D2 is 687mm, and the third locking distance D3 is 458mm.

[0040] In the sixth optional embodiment, the preset height H1 of the outward protrusion of the locking rod 131 is 25mm. At this time, the first locking distance D1 is 1432mm, the second locking distance D2 is 716mm, and the third locking distance D3 is 477mm.

[0041] It should also be noted that, such as Figure 1 and Figure 3 As shown, the locking rod 131 can be a round rod, and the locking groove can be a semi-circular groove. By using the round rod to abut against the bottom surface of the forming mold 2, the stress concentration between the round rod and the bottom surface of the forming mold 2 can be reduced, and permanent indentations can be avoided on the locking rod 131. The locking rod 131 can also be a square rod, and the locking groove can be a square groove. The square groove is inclined at a certain angle relative to the top surface of the support frame 1. The inclination angle of the square groove can be complementary to the required inclination angle of the forming mold 2, so that the side of the square rod facing the forming mold 2 is parallel to the bottom surface of the forming mold 2 when it is tilted, ensuring that the square rod and the bottom surface of the forming mold 2 form a surface contact, thereby avoiding stress concentration.

[0042] In another embodiment, in addition to being placed on the top surface of the support frame 1 through the positioning slot, the positioning rod 131 can also be connected to the top surface of the support frame 1 through a cylinder, a lead screw module or other linear movement module, and the preset positioning distance between the positioning rod 131 and the stop member 11 can be adjusted through the aforementioned linear movement module. The telescopic rod of the cylinder, the lead screw of the lead screw module or the linear movement structure of the other linear movement module are arranged on the top surface of the support frame 1 along a preset direction.

[0043] As an optional embodiment, when the molding die 2 forms different tilt angles, to ensure that the support assembly 12 can support the tilted molding die 2, such as... Figures 3 to 5 As shown, the support assembly 12 includes at least one adjusting screw 121. The bottom end of the adjusting screw 121 is connected to the support frame 1, and the top end of the adjusting screw 121 abuts against the bottom surface of the molding die 2. An operating member 122 is provided at the bottom end of the adjusting screw 121. The operating member 122 is located below the support frame 1 and is used to adjust the preset extension length of the adjusting screw 121 relative to the top surface of the support frame 1. Therefore, by adjusting the operating member 122, the adjusting screw 121 can extend the corresponding preset extension length when the molding die 2 forms different tilt angles, ensuring that the adjusting screw 121 can abut against the molding die 2, thereby ensuring the placement stability of the molding die 2 when tilted.

[0044] Specifically, when the tilt angle between the molding die 2 and the support frame 1 is 1°, the ratio between the length of the adjusting screw 121 and the length of the molding die 2 is 0.017; when the tilt angle between the molding die 2 and the support frame 1 is 2°, the ratio between the length of the adjusting screw 121 and the length of the molding die 2 is 0.035; and when the tilt angle between the molding die 2 and the support frame 1 is 3°, the ratio between the length of the adjusting screw 121 and the length of the molding die 2 is 0.053. For example, when the length of the molding die 2 is 1530mm, to ensure the stability of the molding die 2 when tilted at 1°, the preset extension length of the adjusting screw 121 is 26.7mm; to ensure the stability of the molding die 2 when tilted at 2°, the preset extension length of the adjusting screw 121 is 53.4mm; and to ensure the stability of the molding die 2 when tilted at 3°, the preset extension length of the adjusting screw 121 is 80.1mm.

[0045] In this embodiment, as Figure 4 As shown, preferably, two adjusting screws 121 are provided. The two adjusting screws 121 are arranged at intervals along the width direction of the support frame 1 on the top surface of the support frame 1 to further ensure the stability of the molding die 2 supported by the adjusting screws 121. The distance between the two adjusting screws 121 is preferably less than the width of the molding die 2.

[0046] It should be noted that the preset extension length is inversely proportional to the preset locking distance. That is, the closer the locking rod 131 is to the stop 11, the larger the tilt angle of the forming mold 2, and the longer the extension length of the adjusting screw 121, to further ensure the stability of the forming mold 2 when it is tilted. For example, when the preset locking distance is 1432mm, the extension length of the adjusting screw 121 is 26.7mm; when the preset locking distance is 716mm, the extension length of the adjusting screw 121 is 53.4mm; and when the preset locking distance is 477mm, the extension length of the adjusting screw 121 is 80.1mm.

[0047] In another embodiment, to facilitate control of the preset extension length of the adjusting screw 121, and to ensure that the extension length of the adjusting screw 121 can be matched with different tilt angles of the molding die 2, such as... Figure 5 As shown, the support frame 1 is provided with a connecting block 123, and the adjusting screw 121 is screwed to the connecting block 123. The operating part 122 is located below the connecting block 123 so that the lower end of the adjusting screw 121 can be rotated below the connecting part to increase or decrease the extension length of the adjusting screw 121, thereby meeting the matching requirements of different tilt angles of the molding die 2.

[0048] Preferably, the operating element 122 is a rubber handle sleeved on the bottom of the adjusting screw 121, so as to increase the friction at the bottom of the adjusting screw 121, facilitate the application of external force to the adjusting screw 121 to drive its rotation, and simplify the operation of adjusting the extension length.

[0049] Furthermore, the length of the lifting groove and the stop 11 in the preset direction is a preset interval length, and the ratio between the preset interval length and the length of the forming mold 2 is 0.95-1, to ensure that the adjusting screw 121 is located below the forming mold 2 and supports the forming mold 2 when the adjusting screw 121 extends, thus ensuring the supporting effect of the adjusting screw 121 on the forming mold 2. Preferably, the ratio between the preset interval length and the length of the forming mold 2 is 0.99, that is, when the length of the forming mold 2 is 1530mm, the preset interval length between the lifting groove and the stop 11 is 1514.7mm.

[0050] In this embodiment, as Figures 6 to 9As shown, the separating component 22 includes multiple separating elements 221. During concrete pouring, the separating elements 221 are located below the forming groove 21. A connecting groove 212 is formed within the forming groove 21 at a preset angle to a preset direction. The separating elements 221 are slidably connected to the connecting groove 212, and the extension height of the connecting groove 212 is equal to the height of the forming groove 21. Furthermore, when it is necessary to divide the forming groove 21 into multiple separate test block forming spaces using the separating component 22, it can be driven to slide upward relative to the connecting groove 212, causing the separating elements 221 to slide into the forming groove 21, thereby dividing the forming groove 21 into multiple test block forming spaces and simplifying the preparation of standard test blocks.

[0051] Furthermore, since the separator 221 divides the forming groove 21 from bottom to top, the concrete diverted by the separator 221 mainly fills in the vertical direction during the upward movement of the separator 221. This can avoid secondary mixing of the concrete when the separator 221 moves upward, thereby effectively reducing the disturbance to the concrete fibers and reducing the risk of fiber clumping.

[0052] Since the extension height of the connecting groove 212 is equal to the height of the forming groove 21, the separator 221 can slide in the connecting groove 212 to the top of the forming groove 21, further ensuring that the forming groove 21 is divided, effectively guaranteeing that the forming groove 21 is divided into multiple test block forming spaces.

[0053] As a specific example, such as Figure 8 and Figure 9 As shown, the separator 221 is made of flexible fiber cloth. A roller 222 is connected to the bottom surface of the forming mold 2. The roller 222 is located below the connecting groove 212. The bottom end of the flexible fiber cloth is wound around the roller 222, so that the roller 222 can be used to wind and release the flexible fiber cloth. A lifting rod 223 is provided at the top end of the flexible fiber cloth. The extension direction of the lifting rod 223 is consistent with the extension direction of the roller 222, and the end of the lifting rod 223 is slidably connected to the connecting groove 212.

[0054] Therefore, during concrete pouring, the roller 222 can be rotated to wind the separator 221, causing it to retract to the bottom of the forming groove 21 and preventing it from interfering with the natural flow of concrete within the forming groove 21. After the concrete pouring is complete but before it solidifies, the roller 222 can be rotated to release the separator 221, simultaneously applying an upward pulling force to the lifting rod 223, driving it to move upward relative to the connecting groove 212. This completes the lifting action of the separator 221, dividing the forming groove 21 into multiple test block forming spaces.

[0055] Specifically, to facilitate the transmission connection of the roll 222 to the bottom surface of the forming mold 2, such as... Figure 8 and Figure 9As shown, a connecting bottom shell 225 is formed on the outer bottom surface of the forming mold 2. The connecting bottom shell 225 extends along the width direction of the forming mold 2, and a bearing hole is provided on the side wall of the short side of the connecting bottom shell 225. The end of the roller 222 is connected to the bearing in the bearing hole, thereby realizing the transmission connection between the roller 222 and the forming mold 2.

[0056] It should also be noted that the end of the roller 222 connected to the bearing can also extend through the connecting bottom shell 225 and be connected to the drive structure such as the drive motor, so that the roller 222 can be driven to rotate through the output shaft of the motor to complete the winding and unwinding of the flexible fiber cloth.

[0057] It should also be noted that the bottom surface of the molding mold 2 has a perforation. The top of the flexible fiber cloth and the lifting rod 223 pass through the perforation and are located inside the molding groove 21. When pouring concrete, the top of the flexible fiber cloth is located at the inner bottom of the molding groove 21. When the separator 221 is pulled up, the lifting rod 223 and the top of the flexible fiber cloth are pulled up from the inner bottom of the molding groove 21 to the top of the molding groove 21 by force.

[0058] It should also be noted that the flexible fiber cloth is preferably concrete canvas, which can be easily wound onto the roll 222 and can stably withstand the load applied by the concrete after being released and unfolded, thus ensuring its own structural stability.

[0059] More specifically, to facilitate applying force to the lifting rod 223, so as to lift the lifting rod 223 and the flexible fiber cloth, such as Figure 7 and Figure 9 As shown, the end of the lifting rod 223 is provided with a lifting handle 224. The connecting groove 212 is a hollow groove. The lifting handle 224 passes through the connecting groove 212. When it is necessary to pull the lifting rod 223 up, the lifting action of the flexible fiber cloth can be completed by pulling the lifting handle outside the forming mold 2, switching the flexible fiber cloth to the pulled-up state, and further simplifying the lifting action of the separator 221.

[0060] The lifting handle 224 has an internal thread, and its end has a corresponding external thread. The lifting handle 224 is threaded to the end of the mold. The forming mold 2 has a groove-shaped structure. Its four side walls and bottom wall are all formed by steel plates bound together with bolts to form a forming groove 21. A connecting groove 212 is formed on two opposite side walls. A latch is provided at the top of the side wall forming the connecting groove 212. The side of the lifting handle 224 facing the forming mold 2 has a slot. When the lifting handle 224 lifts the lifting rod 223 and the flexible fiber cloth, it can be engaged with the slot by the latch, fixing the lifting handle 224 to the side wall of the forming mold 2. This ensures that the flexible fiber cloth is taut and further ensures the structural stability of the standard specimen after forming.

[0061] As an optional embodiment, such as Figure 1 , Figure 2 and Figure 4 As shown, the bottom of the support frame 1 is provided with multiple adjustable feet 141, each of which is vertically connected to the bottom surface of the support frame 1 for adjusting the levelness of the molding die 2; a level 142 is provided on the top surface of the support frame 1. Specifically, before placing the molding die 2 on the top surface of the support frame 1, the level of the support frame 1 can be adjusted by adjusting the height of the multiple adjustable feet 141 and observing the level 142, thus preventing the top surface of the support frame 1 from having a tilt angle, which would affect the subsequent adjustment of the tilt angle of the molding die 2.

[0062] The workflow of the present invention will be further described below with reference to specific embodiments.

[0063] The support frame 1 has overall dimensions of 1700mm*500mm*150mm. The locking rod 131 is a round rod 500mm long and 50mm in diameter, protruding 25mm from the top surface of the support frame 1. The top surface of the support frame 1 has three locking grooves: the first groove is 1432mm away from the stop 11, the second groove is 716mm away, and the third groove is 477mm away. The stop 11 is a steel strip welded to the top right side of the support frame 1. An adjusting screw 121 is spirally connected to the top left side of the support frame 1.

[0064] The molding mold 2 has a groove structure. Its four side walls and bottom wall are all made of steel plates and are bolted together to form a molding groove 21. The overall size of the molding groove 21 is 1530mm*400mm*110mm. The bottom is connected to a roller 222 through a bearing drive. The roller 222 winds a flexible fiber cloth. The top of the flexible fiber cloth extends into the molding groove 21, and the lifting rod 223 at the top of the flexible fiber cloth passes through the connecting groove 212 on the side wall of the molding groove 21 through the lifting handle 224.

[0065] When preparing the concrete model slab, the support frame 1 can be placed on a flat ground. The adjustable feet 141 at the bottom of the support frame 1 are adjusted, and the level 142 at the top of the support frame 1 is observed to complete the leveling operation of the support frame 1. Then, according to different slope requirements, the locking rod 131 is placed in the locking groove at the corresponding angle position, and the forming mold 2 is placed between the adjusting screw 121 and the stop 11. The locking rod 131 contacts the bottom surface of the forming mold 2, so that the forming mold 2 is tilted relative to the support frame 1 at the corresponding slope (such as 1°, 2° and 3°).

[0066] After placing the molding die 2 on top of the support frame 1, rotate the adjusting screw 121 so that the adjusting screw 121 abuts against the bottom surface of the molding die 2, and ensure that the bottom surface of the molding die 2 abuts against both the adjusting screw 121 and the locking rod 131 at the same time, ensuring that the inclined molding die 2 is in stable contact. At this time, the inclination angle of the molding die 2 is the test slope.

[0067] After placing the molding mold 2, the UHPC mixture is poured evenly from the higher side, using a fixed placement point, until the lower side of the molding trough 21 is filled, completing the concrete pouring process. Then, the adjusting screw 121 is raised, and the locking rod 131 is pulled out from the bottom of the molding mold 2. The molding mold 2 is then placed on the top surface of the support frame 1, ensuring it remains level. After leveling the molding mold 2, the lifting rod 223 is raised using the lifting handle 224, causing the flexible fiber cloth to rise. This utilizes the flexible fiber cloth to divide the molding trough 21 into multiple test block molding spaces, completing the concrete model slab segmentation. After the UHPC material hardens, loosen the bolts, unscrew the steel frame bolts, and gently tap the steel plate of the molding groove 21 with a rubber hammer to remove the molding groove 21. Then, gently tap the test blocks and remove the standard flexural strength test blocks one by one. Cure the test blocks to the test age and conduct flexural strength tests. Plot the flow distance and flexural strength under the material and slope conditions, analyze the dispersion of steel fibers inside the damaged test blocks, and propose the optimal material spacing according to the design requirements.

[0068] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A test block molding device for ultra-high performance concrete, characterized in that, include: The support frame has stoppers and support components arranged on its top surface; A molding die is placed between the stop and the support assembly. A molding groove is formed inside the molding die. Multiple partition components are provided in the molding groove. The multiple partition components are arranged along a preset direction. The partition components are used to divide the molding groove into multiple standard test block grooves. The preset direction is the length direction of the molding die or the support frame. An angle locking component is provided on the top surface of the support frame. A preset locking distance is formed between the angle locking component and the stop. The top surface of the angle locking component protrudes outward from the top surface of the support frame and abuts against the bottom surface of the forming mold to adjust the tilt angle of the forming mold. The bottom of the support component is movably connected to the top surface of the support frame, and when the molding mold is tilted, the top of the support component abuts against the bottom surface of the molding mold.

2. The test block molding device for ultra-high performance concrete as described in claim 1, characterized in that, The angle positioning assembly includes a positioning rod, which is placed on the top surface of the support frame along the width direction of the support frame, and the top surface of the positioning rod protrudes outward from the top surface of the support frame. The preset positioning distance is the distance between the positioning rod and the stop member.

3. The test block molding device for ultra-high performance concrete as described in claim 2, characterized in that, The top surface of the locking rod protrudes outward at a predetermined height relative to the top surface of the support frame, the predetermined height being 20mm-25mm; the angle locking assembly includes a first locking groove, a second locking groove, and a third locking groove arranged along a predetermined direction, the first locking groove forming a first locking distance with the stop member, the first locking distance being 1146mm-1432mm; A second locking distance is formed between the second locking groove and the stop member, and the second locking distance is 572mm-716mm; A third locking distance is formed between the third locking groove and the stop member, and the third locking distance is 381mm-477mm.

4. The test block molding device for ultra-high performance concrete as described in claim 1, characterized in that, The support assembly includes at least one adjusting screw, the bottom end of which is connected to the support frame, and the top end of which abuts against the bottom surface of the molding die. An operating component is provided at the bottom end of the adjusting screw. The operating component is located below the support frame and is used to adjust the preset extension length of the adjusting screw relative to the top surface of the support frame.

5. The test block molding device for ultra-high performance concrete as described in claim 4, characterized in that, The preset extension length is inversely proportional to the preset card slot spacing.

6. The test block molding device for ultra-high performance concrete as described in claim 4, characterized in that, The support frame is provided with a connecting block, the adjusting screw is spirally connected to the connecting block, and the operating component is located below the connecting block.

7. The test block molding device for ultra-high performance concrete as described in claim 1, characterized in that, The separating component includes multiple separating parts. During concrete pouring, the separating parts are located below the forming groove. A connecting groove is formed in the forming groove at a preset angle to the preset direction. The separating parts are slidably connected to the connecting groove. The extension height of the connecting groove is equal to the height of the forming groove.

8. The test block molding device for ultra-high performance concrete as described in claim 7, characterized in that, The separator is a flexible fiber cloth, and a roller is connected to the bottom surface of the molding die. The roller is located below the connecting groove, and the bottom end of the flexible fiber cloth is wound around the roller. A lifting rod is provided at the top of the flexible fiber cloth, and the lifting rod is slidably connected to the connecting groove.

9. The test block molding device for ultra-high performance concrete as described in claim 8, characterized in that, The lifting rod is provided with a lifting handle at its end, and the connecting groove is a hollow groove through which the lifting handle passes.

10. The test block molding device for ultra-high performance concrete as described in claim 1, characterized in that, The bottom of the support frame is provided with adjustable feet, which are vertically connected to the bottom surface of the support frame for adjusting the levelness of the molding mold; the top surface of the support frame is provided with a level.

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