A precast mold simulating irregular cracks in concrete

Abstract

The utility model provides a kind of prefabricated mould of simulating irregular crack of concrete, it is related to concrete detection technical field, including: mould structure, the mould structure includes base, a group of lifting legs is equipped in the bottom position of base, an isolation plate is installed in the upper position of base, the upper position of base is installed in four corners with a group of butt joint frame with cooperation bolt, transverse plate and side plate are installed between a group of butt joint frame, transverse plate, side plate are respectively set to two, transverse plate, side plate mutually splice into rectangular structure. First locking block through type locking and second locking block spring auxiliary inclined plane unlocking structure, the quick assembly and disassembly of mould are realized;Tension positioning rod can separate stable structure, without complex tool, mould dismounting time is greatly shortened, it is convenient that concrete test block stripping and mould reuse, improve test efficiency while reducing artificial operation cost and mould maintenance difficulty.

Description

Technical Field

[0001] This utility model relates to the field of concrete testing technology, and in particular to a precast mold for simulating irregular cracks in concrete. Background Technology

[0002] In the field of concrete testing, especially when using radar detection technology to detect internal defects in concrete, it is necessary to prefabricate concrete test blocks containing different defects to verify the accuracy and reliability of the testing equipment. Simulating irregular cracks inside concrete is a crucial test component. Currently, prefabricated molds used to simulate internal concrete defects face numerous technical bottlenecks, making it difficult to meet the diverse needs of scientific research and engineering testing. Specifically: Existing concrete defect simulation molds mostly adopt a fixed structure design, relying on manual measurement and positioning during assembly, and lack precise positioning structures between components; traditional molds require the use of various tools for assembly and disassembly, consuming a lot of time and manpower; the complex disassembly and assembly process not only reduces the efficiency of the test, but also increases the cost of manual operation and the risk of mold damage, making it difficult to meet the needs of efficient and frequent testing; For the preliminary preparation work of testing, the traditional test block area division relies on manual measurement and marking using tools such as tape measures and chalk. This method is not only inefficient, but also makes it difficult to guarantee the uniformity and accuracy of grid distribution, which leads to increased errors in subsequent radar detection and other work, affecting the reliability of the test data. Utility Model Content

[0003] This utility model relates to a precast mold for simulating irregular cracks in concrete. Modular and precise assembly is achieved through L-shaped splicing grooves and bolt mounting holes in the mold structure, ensuring the accuracy of the concrete body's molding. The use of horizontal and vertical stabilizing blocks enhances the mold's pressure-bearing stability during concrete pouring. The design of the first and second locking blocks and positioning rods enables rapid mold assembly and disassembly, reducing operation and maintenance costs. A nine-square grid formed by laser lights on the positioning plate optimizes the division of testing areas in the early stages of detection. Various simulated defect components can be flexibly arranged within the mold to meet diverse testing needs. The protective structure of the protective cap and positioning ring extends the mold's service life. The coordinated operation of all structural parts effectively solves the problems of traditional molds in terms of accuracy, stability, and convenience, providing an efficient and reliable tool for concrete defect detection testing.

[0004] This utility model provides a precast mold for simulating irregular cracks in concrete, specifically including: a mold structure, the mold structure including a base, a set of supporting legs at the bottom of the base, an isolation plate installed at the top of the base, a set of connecting frames installed at the four corners of the top of the base with bolts, a horizontal plate and two side plates installed between the connecting frames, the horizontal plate and the side plate being spliced ​​together to form a rectangular structure, a set of bolt mounting holes at the bottom of the connecting frames, a positioning ring above each bolt mounting hole, a set of protective caps installed on the outer side of the positioning rings, a set of connecting plates installed at the corners between the base and the connecting frames, a set of reference rods installed above the horizontal plate and the side plates with bolts, the reference rods being distributed obliquely at the corners, the inner side of the horizontal plate and the side plates being filled with concrete, two positioning plates installed on the outer side of the horizontal plate and the side plates, a set of bolt mounting holes at the bottom of the positioning plates; the inner side of the concrete body being filled with irregular crack forming components.

[0005] Furthermore, a splicing groove is provided on the inner side of the docking frame. The splicing groove has an L-shaped structure, and one side of the horizontal plate and the side plate extends into the interior of the splicing groove. The base, the partition plate, the horizontal plate, and the side plate cooperate with each other to form a mold structure.

[0006] Furthermore, a horizontal stabilizing block is provided on the inner side of the docking frame, and a vertical stabilizing block is provided at the corner on the outer side of the docking frame. The horizontal stabilizing block and the vertical stabilizing block are both inclined block structures. A set of rectangular grooves is opened on the outer side of the side plate, and the bottom of the horizontal stabilizing block and the rectangular grooves are engaged.

[0007] Furthermore, a set of vertically distributed first locking blocks are provided on the inner side of the connecting plate. The first locking blocks are cylindrical structures. Two sets of sliding holes are opened on one side of the connecting frame, and a set of sliding holes are opened on each side of the horizontal plate. The horizontal sliding holes are interconnected. The first locking blocks pass through the interior of the sliding holes in sequence. A set of locking grooves are opened at the corners of the bottom of the base, and the first locking block at the bottom extends into the interior of the locking groove.

[0008] Furthermore, a 90-degree bending block is provided on one side of the connecting plate. A set of sliding holes are opened on the bending block, and two positioning rods are inserted inside the sliding holes. A second locking block is installed between the two positioning rods. The second locking block is an inclined block structure. A support spring is installed on the outer side of the positioning rod. The support spring is located between the bending block and the second locking block. The side of the second locking block and the vertical stabilizing block are in contact. The connecting plate, the first locking block, the positioning rods, and the second locking block cooperate with each other to form a stable structure.

[0009] Furthermore, a clamping groove is formed on the upper part of the positioning plate. The clamping grooves are arranged in a 90-degree longitudinal and transverse pattern and have an arc structure. A laser light is installed on the inner side of each clamping groove.

[0010] Furthermore, a locking groove is formed on the outer side of the positioning ring. The locking groove has a circular structure, and a retaining ring is provided on the inner side of the protective cap, extending into the interior of the locking groove.

[0011] Furthermore, the irregular crack forming component includes an inclined tube, a sphere, an empty bottle, a cube, and a crack forming plate. The concrete body also has a large particle area, and an un-tamped area is provided at the corner of the concrete body on one side of the reference rod.

[0012] This invention provides a precast mold for simulating irregular cracks in concrete, which has the following advantages: The mold structure of this utility model adopts a modular design with L-shaped splicing grooves and bolt mounting holes. The horizontal plate and side plate can be quickly embedded into the docking frame to achieve precise positioning and assembly. The components work closely together to form a regular pouring space, ensuring the accuracy of the concrete body molding.

[0013] The horizontal stabilizing block engages with the rectangular groove of the side plate, and the vertical stabilizing block, in conjunction with the inclined surface of the second locking block of the stabilizing structure, reinforces the mold frame from both horizontal and vertical dimensions. Under the high pressure of concrete pouring, this structure can effectively prevent the side plate from shifting or deforming, ensure the overall stability of the mold, avoid distortion of simulated defect morphology caused by mold loosening, and guarantee the reliability of the test block quality.

[0014] The through-type locking of the first locking block and the inclined unlocking structure assisted by the spring of the second locking block enable the rapid assembly and disassembly of the mold; the tension positioning rod can separate the stable structure without complicated tools, greatly shortening the mold assembly and disassembly time, facilitating the demolding of concrete test blocks and the reuse of the mold, improving the efficiency of the test while reducing the cost of manual operation and the difficulty of mold maintenance.

[0015] The design incorporates laser lights that intersect to form a nine-square grid, enabling rapid and precise marking of test areas on the surface of concrete test blocks, replacing the cumbersome process of traditional manual measurement and marking. This design not only improves the efficiency of test area division but also ensures the uniformity and accuracy of grid distribution.

[0016] The mold can be flexibly arranged with various simulated defects such as inclined tubes, spheres, empty bottles, and cracked forming plates. At the same time, large particle areas and untamped areas can be set to comprehensively simulate common defect types in concrete such as voids, foreign objects, cracks, uneven aggregate, and inadequate compaction. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0018] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the present invention.

[0019] In the attached diagram: Figure 1 A schematic diagram of the axial structure of the precast mold and the concrete body after they are combined is shown. Figure 2 A schematic diagram of the axial structure of the prefabricated mold of this utility model is shown; Figure 3 This utility model illustrates Figure 2 A schematic diagram of a partial axial side structure; Figure 4 A schematic diagram of the axial structure of the prefabricated mold disassembly structure of this utility model is shown; Figure 5 A schematic diagram of the axial side structure of the partially disassembled prefabricated mold of this utility model is shown. Figure 6 A schematic diagram of the axial side structure of a partially sectionalized preform mold of this utility model is shown. Figure 7 This utility model illustrates Figure 2 A magnified structural diagram at point A.

[0020] List of reference numerals 1. Mold structure; 101. Base; 102. Isolation plate; 103. Horizontal plate; 104. Side plate; 2. Connecting frame; 201. Horizontal stabilizing block; 202. Vertical stabilizing block; 203. Positioning ring; 3. Protective helmet; 4. Stable structure; 401. Connecting plate; 402. First locking block; 403. Positioning rod; 404. Second locking block; 5. Reference rod; 6. Concrete main body; 601. Inclined tube; 602. Sphere; 603. Empty bottle; 604. Cube; 605. Cracked molded plate; 606. Large particle area; 607. Untamped area; 7. Positioning plate; 701. Laser light. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Example 1: Please refer to Figures 1 to 7 : This utility model proposes a precast mold for simulating irregular cracks in concrete, comprising: a mold structure 1, the mold structure 1 including a base 101, a set of supporting legs at the bottom of the base 101, an isolation plate 102 installed above the base 101, and a set of connecting frames 2 bolted to the four corners above the base 101. A horizontal plate 103 and a side plate 104 are installed between the connecting frames 2, with two horizontal plates 103 and two side plates 104 each, which are spliced ​​together to form a rectangular structure. The inner side of the connecting frames 2 is provided with... There is an L-shaped splicing groove. One side of the horizontal plate 103 and the side plate 104 extend into the interior of the splicing groove. The base 101, the partition plate 102, the horizontal plate 103, and the side plate 104 cooperate to form the mold structure 1. Specifically, the L-shaped splicing groove, in conjunction with the horizontal plate 103 and the side plate 104, enables precise positioning and rapid splicing of each component, preventing misalignment during assembly, ensuring the overall shape of the mold structure 1 is regular, providing a stable and accurate space for the pouring of the concrete body 6, and improving the assembly efficiency and forming accuracy of the mold structure 1; docking. A set of bolt mounting holes is provided at the bottom of the frame 2. A positioning ring 203 is provided above each bolt mounting hole. A horizontal stabilizing block 201 is provided on the inner side of the connecting frame 2, and a vertical stabilizing block 202 is provided at the corner on the outer side of the connecting frame 2. Both the horizontal and vertical stabilizing blocks 201 and 202 are inclined block structures. A set of rectangular grooves is provided on the outer surface of the side plate 104. The bottom of the horizontal stabilizing block 201 engages with the rectangular grooves, restricting the vertical movement of the side plate 104 and effectively preventing the side plate 104 from being damaged during concrete pouring. During the construction process, the pressure causes vertical or horizontal displacement, ensuring the stability of the mold structure 1, thereby ensuring the accuracy and stability of the forming dimensions of the concrete body 6. A locking groove is opened on the outer side of the positioning ring 203. The locking groove is a circular ring structure. A retaining ring is provided on the inner side of the protective cap 3, which extends into the interior of the locking groove. Specifically, the retaining ring of the protective cap 3 cooperates with the locking groove of the positioning ring 203 to realize the quick installation and fixation of the protective cap 3. It can also protect the locking bolts of the connecting frame 2, preventing debris from entering or damaging the bolts during the concrete pouring process. In this embodiment, a set of protective caps 3 are installed on the outer side of the positioning ring 203, and a set of connecting plates 401 are installed at the corner between the base 101 and the docking frame 2. A set of vertically distributed first locking blocks 402 are provided on the inner side of the connecting plate 401. The first locking blocks 402 are cylindrical structures. Two sets of sliding holes are opened on one side of the docking frame 2, and a set of sliding holes are opened on both sides of the horizontal plate 103. The horizontal sliding holes are interconnected. The first locking blocks 402 pass through the interior of the sliding holes in sequence. A set of locking grooves are opened at the corners of the bottom of the base 101. The first locking blocks 402 at the bottom extend into the interior of the locking grooves. Specifically, the first locking blocks 402 pass through the sliding holes of the docking frame 2 and the horizontal plate 103 and extend into the locking grooves of the base 101, forming a fast through-locking of multiple components. This enhances the firmness of the connection between the docking frame 2, the horizontal plate 103 and the base 101, making the connection of each component more stable when the mold is subjected to concrete pressure, reducing the risk of loosening, and ensuring the reliability of the overall structure of the mold. A 90-degree bend is provided on one side of the connecting plate 401. A set of sliding holes is made on the folded block and the bending block. Two positioning rods 403 are inserted inside the sliding holes. A second locking block 404 is installed between the two positioning rods 403. The second locking block 404 is an inclined block structure. A support spring is installed on the outer side of the positioning rods 403. The elasticity of the support spring is selected according to actual needs. The support spring is located between the bending block and the second locking block 404. The second locking block 404 is in contact with the side of the vertical stabilizing block 202. The connecting plate 401, the first locking block 402, the positioning rods 403, and the second locking block 404 cooperate with each other to form a stabilizing structure 4. Specifically, the elasticity of the support spring pushes the second locking block 404 to fit tightly with the side of the vertical stabilizing block 202. The inclined surface cooperation realizes the quick locking of the installation position of the stabilizing structure 4, further enhancing the connection stability of components such as the docking frame 2. At the same time, the positioning rods 403 can be stretched to one side to quickly stabilize the structure 4, unlock the mold structure 1 and the docking frame 2, facilitate the assembly and disassembly of the mold structure 1 and the docking frame 2, and facilitate the demolding of the concrete body 6. In this embodiment, a set of reference rods 5 are bolted to the upper positions of the horizontal plate 103 and the side plate 104. The reference rods 5 are distributed at the corners in an inclined manner. The inner side of the horizontal plate 103 and the side plate 104 is filled with a concrete body 6. The inner side of the concrete body 6 is filled with an irregular crack forming component. The irregular crack forming component includes an inclined tube 601, a sphere 602, an empty bottle 603, a cube 604, and a crack forming plate 605. The concrete body 6 is also provided with a large particle area 606. An un-tamped area is provided at the corner of the concrete body 6 on one side of the reference rods 5. Specifically, 607, the inclined tube 601, sphere 602, empty bottle 603, and cube 604 can respectively simulate different types of defects inside the concrete, such as pipes, spherical impurities, voids, and cubic foreign objects; the crack forming plate 605 is used to simulate concrete cracks; the large particle area 606 simulates uneven distribution of concrete aggregates; and the uncompacted area 607 simulates the defect of insufficient compaction of concrete. By setting these different types of simulated defects within the concrete body 6, concrete test blocks containing various typical defects can be provided for radar detection and other tests, facilitating comprehensive verification and testing. The equipment's ability to identify and detect different defects enhances the comprehensiveness and effectiveness of the test. Two positioning plates 7 are installed on the outer sides of the horizontal plate 103 and the side plate 104, respectively. A set of bolt mounting holes is opened at the bottom of the positioning plates 7. Matching bolts are installed according to actual needs, ensuring the positioning plates 7 are securely in place. A clamping groove is opened on the top of each positioning plate 7, arranged at a 90-degree angle. The clamping grooves have an arc structure. A laser light 701 is installed on the inner side of each clamping groove. The laser light 701 is selected according to actual needs. In the existing pen-shaped model, the power supply structure of the laser lamp 701 can be selected according to actual needs. It can be charged or powered by a button battery. The laser lamps 701 are parallel to each other. Specifically, the lasers emitted by the laser lamps 701 intersect to form a nine-square grid, which can quickly delineate a regular test area grid on the surface of the concrete body 6 or the poured area. Compared with the traditional manual drawing method, it greatly improves the efficiency and accuracy of test area division, provides a clear and accurate reference for test area positioning in subsequent radar detection and other work, and facilitates the rapid determination and marking of the detection area.

[0023] Example 2, based on Example 1, such as Figures 1-6 As shown, after the simulated cracks in the concrete body 6 are formed, the location of the defects is circled and detected using existing radar detection equipment.

[0024] The working principle of this embodiment: Place the base 101 on a flat surface, install the isolation plate 102 on top of the base 101, and use bolts to install the four docking brackets 2 at the four corners of the base 101, ensuring that the docking brackets 2 and the base 101 are installed firmly and in the correct position. Insert one side of the horizontal plate 103 and the side plate 104 into the L-shaped splicing groove inside the docking frame 2, so that the horizontal plate 103 and the side plate 104 are spliced ​​together to form a rectangular structure, which constitutes the basic frame of the mold. Insert the positioning rod 403 into the sliding hole of the bending block of the connecting plate 401, place the connecting plate 401 in the corner between the base 101 and the docking frame 2, and pass the first locking block 402 through the sliding holes of the docking frame 2 and the horizontal plate 103 in sequence, and extend it into the locking groove at the bottom of the base 101; the second locking block 404 is tightly fitted to the side of the vertical stabilizing block 202 of the docking frame 2 under the elastic force of the supporting spring, thus completing the installation of the stabilizing structure 4 and strengthening the connection stability of each component of the mold. Align the retaining ring on the inside of the protective cap 3 with the locking groove of the positioning ring 203 on the docking frame 2, and snap it in to complete the installation of the protective cap 3 and complete the protection of the locking bolts of the docking frame 2. Install the positioning plate 7 on the outside of the horizontal plate 103 and the side plate 104 with bolts, and then install the laser lamp 701 in the clamping groove above the positioning plate 7 to ensure that the laser lamp 701 is installed firmly and can emit laser normally in the future. Based on the experimental requirements, the distribution positions of simulated defects such as inclined tube 601, sphere 602, empty bottle 603, cube 604, and crack forming plate 605 in the mold are planned, and the range of large particle area 606 and untamped area 607 is determined. Turn on the laser light 701 on the positioning plate 7. The laser light 701 emits lasers that intersect to form a nine-square grid, quickly marking a regular grid of test areas on the surface of the concrete body 6, providing a clear and accurate reference for subsequent radar detection and other work. Mix the concrete according to the concrete mix requirements; then slowly pour the concrete into the space enclosed by the horizontal plate 103 and the side plate 104 of the mold structure 1. During the pouring process, take care to avoid disturbing the simulated defects that have been arranged. The concrete is compacted using a vibrating device, but in the uncompacted area 607, no vibration is performed as required by the test, to simulate the defect of the concrete not being compacted. According to the plan, the inclined tube 601, sphere 602, empty bottle 603, and cube 604 are placed in the designated positions in the mold in sequence, the crack forming plate 605 is arranged to simulate concrete cracks, and large aggregates are arranged in the corresponding areas to form large particle areas 606, and an untamped area 607 is reserved. After the concrete has solidified, stretch the positioning rod 403 to separate the second locking block 404 from the vertical stabilizing block 202, thereby releasing the lock of the stabilizing structure 4; then remove the first locking block 402 and remove the connecting plate 401; finally, remove the connecting frame 2, the horizontal plate 103, and the side plate 104 in sequence, and remove the concrete body 6 with simulated defects. The extracted concrete test blocks were placed in a suitable environment for curing to ensure that the strength and other properties of the concrete test blocks met the test requirements. After the simulated cracks in the concrete body 6 have formed and the concrete test blocks meet the testing requirements, the concrete body 6 is tested using existing radar detection equipment according to the defined test area grid, the location of the defects is circled and the test results are analyzed.

Claims

1. A precast mold for simulating irregular cracks in concrete, comprising: The mold structure (1), the docking frame (2), and the reference rod (5) are described. The mold structure (1) includes a base (101), a set of supporting legs at the bottom of the base (101), and an isolation plate (102) installed above the base (101). The characteristic feature is that a set of docking frames (2) are installed at the four corners above the base (101) with bolts. A horizontal plate (103) and a side plate (104) are installed between the set of docking frames (2). The horizontal plate (103) and the side plate (104) are each set in twos. The horizontal plate (103) and the side plate (104) are spliced ​​together to form a rectangular structure. A set of bolt mounting holes are opened at the bottom of the docking frame (2), and the bolt mounting holes are respectively located above the reference rod. A positioning ring (203) is provided, and a set of protective caps (3) are installed on the outer side of the positioning ring (203). A set of connecting plates (401) is installed at the corner between the base (101) and the docking frame (2). A set of reference rods (5) are installed on the upper part of the horizontal plate (103) and the side plate (104) with bolts. The reference rods (5) are distributed in an inclined manner at the corner. The inner side of the horizontal plate (103) and the side plate (104) is filled with concrete body (6). Two positioning plates (7) are installed on the outer side of the horizontal plate (103) and the side plate (104) respectively. A set of bolt mounting holes are opened at the bottom of the positioning plate (7). The inner side of the concrete body (6) is filled with irregular crack forming components.

2. The precast mold for simulating irregular cracks in concrete according to claim 1, characterized in that, The inner side of the docking frame (2) is provided with a splicing groove. One side of the horizontal plate (103) and the side plate (104) extend into the interior of the splicing groove. The base (101), the isolation plate (102), the horizontal plate (103), and the side plate (104) cooperate with each other to form the mold structure (1).

3. The precast mold for simulating irregular cracks in concrete according to claim 1, characterized in that, The inner side of the docking frame (2) is provided with a horizontal stabilizing block (201), and the outer side of the docking frame (2) is provided with a vertical stabilizing block (202) at the corner. The horizontal stabilizing block (201) and the vertical stabilizing block (202) are inclined block structures respectively. A set of rectangular grooves are opened on the outer side of the side plate (104), and the bottom of the horizontal stabilizing block (201) and the rectangular groove are engaged.

4. The precast mold for simulating irregular cracks in concrete according to claim 1, characterized in that, The inner side of the connecting plate (401) is provided with a set of vertically distributed first locking blocks (402). The first locking blocks (402) are cylindrical structures. Two sets of sliding holes are opened on one side of the docking frame (2), and a set of sliding holes are opened on both sides of the horizontal plate (103). The horizontal sliding holes are interconnected. The first locking blocks (402) pass through the interior of the sliding holes in sequence. A set of locking grooves are opened at the corners of the bottom of the base (101), and the first locking blocks (402) at the bottom extend into the interior of the locking grooves.

5. A precast mold for simulating irregular cracks in concrete according to claim 1, characterized in that, A 90-degree bending block is provided on one side of the connecting plate (401). A set of sliding holes are opened on the bending block. Two positioning rods (403) are inserted inside the sliding holes. A second locking block (404) is installed between the two positioning rods (403). A support spring is installed on the outer side of the positioning rods (403). The support spring is located between the bending block and the second locking block (404). The second locking block (404) and the side of the vertical stabilizing block (202) are in contact. The connecting plate (401), the first locking block (402), the positioning rods (403), and the second locking block (404) cooperate with each other to form a stable structure (4).

6. A precast mold for simulating irregular cracks in concrete according to claim 1, characterized in that, A clamping groove is opened on the upper part of the positioning plate (7), and the clamping grooves are distributed in a 90-degree longitudinal and transverse direction. A laser lamp (701) is installed on the inner side of the clamping groove.

7. A precast mold for simulating irregular cracks in concrete according to claim 1, characterized in that, A locking groove is provided on the outer side of the positioning ring (203), and a retaining ring is provided on the inner side of the protective cap (3), which extends into the interior of the locking groove.

8. A precast mold for simulating irregular cracks in concrete according to claim 1, characterized in that, The irregular crack forming component includes an inclined tube (601), a sphere (602), an empty bottle (603), a cube (604), and a crack forming plate (605). The concrete body (6) also has a large particle area (606), and an untamped area (607) is provided at the corner of the concrete body (6) on one side of the reference rod (5).

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