A docking anti-wrinkle sodium bentonite waterproof blanket

Abstract

This invention relates to the field of bentonite waterproofing blanket technology, specifically a sodium-based bentonite waterproofing blanket with anti-wrinkle design. The blanket includes a main body with an integrated anti-wrinkle structure at its joint end, comprising: a tenon-and-mortise positioning strip, a tension-distributed reinforcing bar, a limiting frame, an anti-warping edge, and a buffer transition layer. By providing this integrated anti-wrinkle structure at the joint end of the main body, the tenon-and-mortise positioning strip enables interlocking and positioning constraints between adjacent waterproofing blankets. The tension-distributed reinforcing bar balances the multi-directional tension during the laying process, while the limiting frame restricts the displacement and scattering of sodium-based bentonite at the joint. Combined with the anti-warping edge on the outer side of the joint end to constrain edge deformation, and the buffer transition layer to coordinate the stress at the connection points of each component, the functional structures work together to constrain the displacement and deformation of the joint area of ​​the waterproofing blanket.

Description

Technical Field

[0001] This invention relates to the field of bentonite waterproof blanket technology, specifically to a sodium-based bentonite waterproof blanket with anti-wrinkle properties. Background Technology

[0002] Bentonite waterproofing blankets are geosynthetic materials specifically designed for seepage prevention in artificial lakes and water features, landfills, underground garages, rooftop gardens, pools, oil depots, and chemical storage areas. They consist of highly expansive sodium-based bentonite filled between specially formulated composite geotextiles and non-woven fabrics. The bentonite waterproofing blankets, manufactured using a needle-punching method, create numerous small fiber spaces that prevent the bentonite particles from moving. Upon contact with water, a uniform, high-density gel-like waterproof layer forms within the blanket, effectively preventing water seepage.

[0003] Existing technology discloses a sodium-based bentonite waterproof blanket and its construction method (application number CN201810513243.3). This sodium-based bentonite waterproof blanket features a polygonal columnar drainage channel between a fabric face and a fabric back. The cavity formed by the border of the drainage channel has several through-holes along its upper edge, and a gap between its lower edge and the fabric back. The interior of the border is filled with fast-setting dry powder mortar. Sodium-based bentonite powder is filled within the space between the fabric face, the fabric back, and the drainage channel. During use, surface water from permeable concrete pavements or slopes can seep into the fabric face of the sodium-based bentonite waterproof blanket. The through-holes between the fabric face and the cavity in the drainage channel allow the seeped water to drain away, thus solving the problem of water accumulation between the sodium-based bentonite waterproof blanket and the concrete pavement or slope, which could damage the concrete pavement or slope.

[0004] However, existing technologies, especially this particular solution, still have the following problems: Existing technologies only focus on the drainage function of waterproof blankets and do not design a special positioning and limiting structure for the joint of the waterproof blankets. Precise interlocking and alignment cannot be achieved during the jointing process, which can easily lead to misalignment and displacement, resulting in wrinkles at the joint and damaging the flatness of the joint, which indirectly affects the overall seepage prevention effect of the waterproof blanket. Existing technologies do not have relevant structures to balance the multi-directional tension during the jointing and laying process. The waterproof blanket is subjected to uneven stress during the jointing process, which can easily cause deformation and wrinkles in the jointing area due to local pulling and loosening, reducing the stability and durability of the jointing structure.

[0005] In existing technologies, no dedicated sodium-based bentonite constraint structure is set at the joint. During the jointing process, the bentonite is prone to lateral movement and accumulation, resulting in bulges, unevenness, and other wrinkles at the joint, which also affects the seepage prevention and sealing performance of the joint. Existing technologies do not design an anti-warping and rebound structure at the joint end of the waterproof blanket. After the joint is completed, the joint edge is prone to warping and rebound due to its own stress or external forces, resulting in edge wrinkles. Furthermore, the tightness of the joint edge cannot be guaranteed, which can easily lead to gaps. Summary of the Invention

[0006] The purpose of this invention is to provide a technical solution to address the problems in the prior art mentioned in the background section.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A type of anti-wrinkle sodium-based bentonite waterproof blanket includes: The waterproof blanket body includes a fabric face fabric, a fabric back fabric, and a sodium-based bentonite layer sandwiched between the two. The joint end of the waterproof blanket body is provided with an integrated anti-wrinkle structure, which includes: Tenon and mortise positioning strips are set on both sides of the mating end for precise interlocking and positioning when two waterproof blankets are joined together. Tension-distributing reinforcement is set inside the tenon and mortise positioning strip to balance the multi-directional tensile force during the jointing process; A limiting frame is installed at the joint to restrain the sodium-based bentonite at the joint. Anti-warping edge is provided on the outermost side of the mating end to prevent the mating edge from warping and springing back; A buffer transition layer is laid between the tenon and mortise positioning strip, tension distribution reinforcement, limiting frame, and anti-warping pressure edge to resolve the stress difference between the various structures.

[0008] Preferably, after the two waterproof blankets are joined together to form an integrated anti-wrinkle structure, the outer surface of the integrated anti-wrinkle structure is provided with a pressing and reinforcing structure, which includes a transverse pressing strip and a longitudinal reinforcing block. The transverse pressing strip extends continuously along the direction parallel to the joint, and is attached and fixed to the outer surface of the integrated anti-wrinkle structure to press and support the joint as a whole, and to suppress bulges and wrinkles at the joint. The longitudinal reinforcing block spans two waterproof blankets in a direction perpendicular to the joint, and is arranged in a segmented and spaced manner. The spanning part presses the integrated anti-wrinkle structure and the main body of the waterproof blankets on both sides, which is used to horizontally tighten and fix the joint, and prevent the two waterproof blankets from misaligning and warping at the edges.

[0009] Preferably, the tenon and mortise positioning strip is configured as a multi-level stepped tenon and mortise positioning strip; the multi-level stepped tenon and mortise positioning strip includes an integrally arranged main positioning tenon, secondary positioning teeth and anti-disengagement hook; The main positioning tenon is a trapezoidal structure that is wider at the top and narrower at the bottom. The secondary positioning teeth are symmetrically arranged on both sides of the main positioning tenon, and the anti-disengagement hooks are set facing the outside of the mating to achieve self-locking during mating.

[0010] Preferably, the long side of the waterproof blanket body is continuously provided with tenon and mortise positioning strips throughout the entire joint end; the short side is provided with tenon and mortise positioning strips only in the middle area of ​​the joint end, with assembly allowance reserved at both ends; the corners of the waterproof blanket body are provided with rounded transition structures to eliminate local wrinkles caused by right-angle stress concentration.

[0011] Preferably, the tension distribution reinforcement is configured as a double-layer elastic tension distribution reinforcement, which includes a main force reinforcement and a secondary buffer reinforcement. The main tension ribs are made of high-elastic fiber filaments arranged in a cross pattern of horizontal and diagonal, and are laid out inside the tenon and mortise positioning strips as a whole; the secondary buffer ribs are elastic and flexible pads sandwiched between the main tension ribs and the sodium bentonite layer, and deformation buffer grooves are reserved at the intersection of the tension ribs. The tension-distributed reinforcement is woven together with the surface fabric of the waterproof blanket body, and the secondary buffer reinforcement is fixed to the inner side of the bottom fabric by hot pressing.

[0012] Preferably, the limiting frame is configured as a double-layer nested limiting frame, which includes an inner flexible limiting soft frame and an outer rigid reinforcing hard frame; the flexible limiting soft frame is a limiting groove structure formed by a thin film, covering the bentonite around the joint; the rigid reinforcing hard frame is a segmented prefabricated frame, embedded in the edge of the joint end, and a water-soluble isolation layer is provided between the soft frame and the hard frame.

[0013] Preferably, the inner side of the double-layer nested limiting frame is fitted and aligned with the outer side of the tenon and mortise positioning strip, the outer side of the limiting frame is flush with the edge of the docking end, and the rigidly reinforced hard frame is embedded and fixed in the preset groove of the bottom fabric.

[0014] Preferably, the anti-warping edge is configured as a three-layer composite anti-warping edge, which is integrally fixed to the outermost part of the mating end and is composed of a wear-resistant base, an elastic intermediate pad, and an anti-slip surface layer; the anti-slip surface layer is provided with an anti-slip toothed structure, and a thickened anti-warping reinforcement strip is provided on the outer side of the edge. The three-layer composite anti-warping edge is connected to the main body of the waterproof blanket as a whole by using a hot-pressed composite combined with seam reinforcement.

[0015] Preferably, the buffer transition layer is configured as a butt joint anti-wrinkle buffer transition layer, which is a flexible and elastic thin layer that is fully covered at the connection gaps of the tenon and mortise positioning strip, the tension distribution rib, the limiting frame and the anti-warping pressing edge, so as to realize the flexible transition of multiple components.

[0016] Preferably, it also includes a method for laying the waterproof blanket, comprising the following steps: S1: Base surface cleaning and pretreatment, base surface cleaning and pretreatment, leveling and compacting the foundation slope and base surface, completing the base surface cleaning, avoiding sharp debris from damaging the main fabric of the waterproof blanket, the fabric backing and the sodium bentonite layer. S2: Mortise and tenon joint and tension adjustment, precisely fit and position the mortise and tenon positioning strips at the joint ends of two adjacent waterproof blankets, evenly pull and flatten the waterproof blanket, so that the tension distribution reinforcement is evenly stressed to balance the multi-directional tension of the joint section, while ensuring that the buffer transition layer fits the mortise and tenon positioning strips and the tension distribution reinforcement to eliminate local stress differences. S3: Limiting curing and joint compaction. The limiting frame at the joint is moistened to solidify the prefabricated reinforcement structure of the limiting frame. Simultaneously, the sodium bentonite at the joint is constrained to prevent lateral movement and accumulation. The joint is compacted at a uniform speed using a pressure roller to ensure that each anti-wrinkle structure fits tightly. S4: Edge pressing and sealing shaping, pressing and bonding the outer anti-warping edge to make the anti-warping edge tightly connected with the fabric of the waterproof blanket body, sealing the joint edge and preventing the joint edge from warping and springing back. S5: Hydration curing and protective finishing touches. Overall water spraying curing is carried out to fully hydrate and expand the sodium-based bentonite layer inside the waterproof blanket, forming a dense impermeable layer. After curing, a protective layer is covered on the surface of the waterproof blanket to complete the overall laying construction.

[0017] Technical effects and advantages of the present invention: The sodium-based bentonite waterproof blanket with anti-wrinkle properties proposed in this invention has the following advantages compared with the prior art: This invention achieves interlocking and positioning constraints between adjacent waterproof blankets by setting an integrated anti-wrinkle structure at the joint end of the main body of the waterproof blanket, and by using tenon and mortise positioning strips; it balances the multi-directional tension during the joint laying process by relying on tension-distributed reinforcing bars, and uses a limiting frame to restrict the displacement and scattering of sodium-based bentonite at the joint position; it combines anti-warping pressure edge on the outside of the joint end to constrain edge deformation, and at the same time coordinates the stress at the joint position of each component through a buffer transition layer, so that each functional structure cooperates with each other to jointly constrain the displacement and deformation of the joint part of the waterproof blanket.

[0018] Relying on the integrated assembly structure at the docking end, precise positioning of the waterproof blanket docking can be achieved, balancing the stress state of the docking area and reducing wrinkling problems caused by misalignment and uneven stress. It can stably constrain the bentonite arrangement at the docking seam, avoiding structural unevenness caused by local material movement and ensuring the regularity of the docking area. It effectively suppresses warping and rebound at the docking edge, buffers stress differences between structures, reduces deformation defects at the connection point, and improves the fit and overall structural stability of the waterproof blanket docking assembly; it also achieves anti-wrinkle foundation layout at the waterproof blanket docking position, relying on the independent function of each component to jointly form a docking protection system. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the sodium-based bentonite waterproof blanket of the present invention; Figure 2 This is a schematic diagram of the planar structure of the sodium-based bentonite waterproof blanket of the present invention; Figure 3 This is a flowchart illustrating the construction method for laying waterproof blankets in an embodiment of the present invention.

[0020] In the picture: 10. Waterproof blanket body; 11. Fabric face fabric; 12. Sodium bentonite layer; 13. Fabric back fabric; 14. Butt joint; 20. Integrated anti-wrinkle structure; 21. Mortise and tenon positioning strip; 22. Tension evenly distributed reinforcement; 23. Limiting frame; 24. Anti-warping edge pressing; 25. Buffer transition layer; 26. Press-fit reinforcement structure; 27. Transverse pressing strip; 28. Longitudinal reinforcement block. Detailed Implementation

[0021] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0022] The invention provides, for example Figures 1 to 3 As shown, a butt-jointed, wrinkle-resistant sodium-based bentonite waterproof blanket includes: The waterproof blanket body 10 includes a fabric face fabric 11, a fabric back fabric 13, and a sodium-based bentonite layer 12 sandwiched between the two. The connecting end 14 of the waterproof blanket body 10 is provided with an integrated anti-wrinkle structure 20, the integrated anti-wrinkle structure 20 including: Tenon and mortise positioning strips 21 are set on both sides of the mating end 14 for precise interlocking and positioning when two waterproof blankets are joined together. Tension-distributing ribs 22 are provided on the inner side of the tenon and mortise positioning strips 21 to balance the multi-directional tensile forces during the jointing process; The limiting frame 23 is set at the joint to restrain the sodium-based bentonite at the joint. Anti-warping edge 24 is provided on the outermost side of the mating end 14 to prevent the mating edge from warping and springing back; The buffer transition layer 25 is laid between the tenon and mortise positioning strip 21, the tension distribution reinforcement 22, the limiting frame 23, and the anti-warping pressing edge 24 to resolve the stress difference between the various structures.

[0023] Working principle: By setting an integrated anti-wrinkle structure 20 at the joint end 14 of the waterproof blanket body 10, the interlocking and positioning constraint of adjacent waterproof blankets is achieved through the tenon and mortise positioning strip 21; the tension distribution reinforcement 22 is used to balance the multi-directional tension during the joint laying process, and the limiting frame 23 is used to limit the displacement and scattering of sodium bentonite at the joint position; combined with the anti-warping pressing edge 24 on the outside of the joint end 14 to constrain edge deformation, and at the same time, the stress at the joint position of each component is coordinated through the buffer transition layer 25, so that each functional structure cooperates with each other to jointly constrain the displacement and deformation of the joint part of the waterproof blanket.

[0024] Relying on the integrated 14-piece docking structure, precise positioning of the waterproof blanket docking can be achieved, balancing the stress state of the docking area and reducing wrinkling problems caused by misalignment and uneven stress. It can stably constrain the bentonite arrangement at the docking seam, avoiding structural unevenness caused by local material movement and ensuring the regularity of the docking area. It effectively suppresses warping and rebound at the docking edge, buffers stress differences between structures, reduces deformation defects at the connection point, and improves the fit and overall structural stability of the waterproof blanket docking assembly; it also achieves anti-wrinkle foundation layout at the waterproof blanket docking position, relying on the independent functions of each component to jointly form a docking protection system.

[0025] Regarding the external reinforcement design of the joint after the assembly is completed, the overall support and bridging fixation of the joint are achieved. After the two waterproof blankets are joined to form an integrated anti-wrinkle structure 20, the outer surface of the integrated anti-wrinkle structure 20 is provided with a pressing and reinforcing structure 26, which includes a transverse pressing strip 27 and a longitudinal reinforcing block 28. The transverse pressing strip 27 extends continuously along the direction parallel to the joint, and is attached and fixed to the outer surface of the integrated anti-wrinkle structure 20. It is used to press and support the joint as a whole, and to suppress bulges and wrinkles at the joint. The longitudinal reinforcing block 28 spans two waterproof blankets in a direction perpendicular to the joint, and is arranged in a segmented and spaced manner. The spanning part presses the integrated anti-wrinkle structure 20 and the main body 10 of the waterproof blankets on both sides, which is used to tighten and fix the joint laterally to prevent the two waterproof blankets from misaligning and warping at the edges. It should be noted that the tenon and mortise positioning strip 21 adopts a multi-level stepped optimized structure, combined with a main positioning tenon, secondary positioning teeth, and anti-loosening barb. It relies on a special cross-sectional structure to achieve self-locking during mating, improving splicing stability. The tenon and mortise positioning strip 21 is configured as a multi-level stepped tenon and mortise positioning strip 21; the multi-level stepped tenon and mortise positioning strip 21 includes an integrally arranged main positioning tenon, secondary positioning teeth, and anti-loosening barb. The main positioning tenon is a trapezoidal structure that is wider at the top and narrower at the bottom. The secondary positioning teeth are symmetrically arranged on both sides of the main positioning tenon, and the anti-disengagement hooks are set facing the outside of the mating to achieve self-locking during mating.

[0026] Furthermore, considering the differences in splicing length and short sides of the waterproof blanket, the layout range of the tenon and mortise positioning strips 21 is rationally planned. Simultaneously, rounded transition structures are set at the corners to alleviate stress concentration at right angles and reduce local wrinkles. The tenon and mortise positioning strips 21 are continuously installed throughout the entire joint end 14 of the long side of the waterproof blanket body 10; the tenon and mortise positioning strips 21 are only installed in the middle area of ​​the joint end 14 of the short side, with assembly allowances reserved at both ends; rounded transition structures are set at the corners of the waterproof blanket body 10 to eliminate local wrinkles caused by stress concentration at right angles.

[0027] Preferably, the tension distribution reinforcement 22 is configured as a double-layer elastic structure, which limits the reinforcement arrangement, the installation position of the padding layer, and the reserved buffer groove structure, and limits the composite connection method with the waterproof blanket body 10, adapting to the multi-directional force adjustment requirements. The tension distribution reinforcement 22 is configured as a double-layer elastic tension distribution reinforcement 22, which includes a main force reinforcement and a secondary buffer reinforcement. The main tension ribs are made of high-elastic fiber filaments arranged in a cross pattern of horizontal and diagonal, and are laid out on the inner side of the tenon and mortise positioning strip 21. The secondary buffer ribs are elastic and flexible pads sandwiched between the main tension ribs and the sodium bentonite layer 12, and deformation buffer grooves are reserved at the intersection of the tension ribs. The tension uniformly distributed ribs 22 are woven together with the surface fabric of the waterproof blanket body 10, and the secondary buffer ribs are fixed to the inner side of the fabric base 13 by hot pressing.

[0028] In addition, the limiting frame 23 adopts a double-layer nested combination structure, distinguishing between the inner flexible protection and the outer rigid reinforcement structure, and is equipped with a segmented frame and isolation layer to fully cover and protect the sodium-based bentonite in the docking area. The limiting frame 23 is configured as a double-layer nested limiting frame 23, which includes an inner flexible limiting soft frame and an outer rigid reinforcement hard frame; the flexible limiting soft frame is a limiting groove structure formed by a thin film enclosure, covering the bentonite around the docking joint; the rigid reinforcement hard frame is a segmented prefabricated frame, embedded in the edge of the docking end 14, and a water-soluble isolation layer is set between the soft frame and the hard frame.

[0029] Specifically, the positional relationship between the double-layer nested limiting frame 23, the tenon and mortise positioning strip 21, and the mating end 14 is clearly defined. Structural alignment and adaptation are achieved through an embedded installation method, ensuring the neatness of the limiting component installation. The inner side of the double-layer nested limiting frame 23 is aligned with the outer side of the tenon and mortise positioning strip 21, and the outer side of the limiting frame 23 is flush with the edge of the mating end 14. The rigidly reinforced frame is embedded and fixed within the pre-set groove of the bottom fabric.

[0030] The anti-warping edge 24 features a refined layered structure, employing a three-layer composite integral molding structure, combined with a surface anti-slip structure and edge reinforcement strips. This is achieved through a combination of heat-pressing composite and stitching to enhance edge connection strength and anti-warping performance. The anti-warping edge 24 is a three-layer composite structure, integrally fixed to the outermost part of the mating end 14. It consists of a wear-resistant base, an elastic intermediate pad, and an anti-slip surface layer. The anti-slip surface layer features an anti-slip toothed structure, and a thickened anti-warping reinforcement strip is provided on the outer side of the edge. The three-layer composite anti-warping edge 24 is connected to the waterproof blanket body 10 as a whole using a combination of heat-pressing composite and stitching reinforcement.

[0031] Based on the connection and adaptation requirements of various functional components, the buffer transition layer 25 is set as a flexible and elastic thin layer, which fully covers the connection gaps of multiple structures and achieves flexible transition between components by relying on its own material properties. The buffer transition layer 25 is set as a butt joint anti-wrinkle buffer transition layer 25. The butt joint anti-wrinkle buffer transition layer 25 is a flexible and elastic thin layer that is fully covered at the connection gaps of the tenon and mortise positioning strip 21, the tension distribution rib 22, the limiting frame 23 and the anti-warping pressing edge 24, so as to achieve flexible transition of multiple components.

[0032] To ensure the effective functioning of various anti-wrinkle structures after construction, a dedicated installation process is established. Through standardized, step-by-step operations, the entire process of waterproof blanket splicing, structural fitting, and curing is guaranteed to be implemented stably. This also includes the installation method for the waterproof blanket, comprising the following steps: S1: Base surface cleaning and pretreatment, base surface cleaning and pretreatment, leveling and compacting the foundation slope and base surface, completing the base surface cleaning, avoiding sharp debris from damaging the fabric face 11, fabric back 13 and sodium bentonite layer 12 of the waterproof blanket body 10. S2: Mortise and tenon joint and tension adjustment, precisely fit and position the mortise and tenon positioning strips 21 of the joint ends 14 of the two adjacent waterproof blankets, evenly pull and flatten the waterproof blanket, so that the tension distribution reinforcement 22 is evenly stressed to balance the multi-directional tension of the joint section, while ensuring that the buffer transition layer 25 fits the mortise and tenon positioning strips 21 and the tension distribution reinforcement 22 to eliminate local stress difference. S3: Limiting curing and joint compaction. The limiting frame 23 at the joint is wetted to solidify the prefabricated reinforcement structure of the limiting frame 23. Simultaneously, the sodium-based bentonite at the joint is constrained to prevent lateral movement and accumulation. The joint is compacted at a uniform speed using a pressure roller to ensure that each anti-wrinkle structure fits tightly. S4: Edge pressing and sealing shaping, pressing and bonding the outer anti-warping edge 24 to make the anti-warping edge 24 tightly connected with the fabric surface 11 of the waterproof blanket body 10, sealing the joint edge and preventing the joint edge from warping and springing back. S5: Water curing and protection finishing touches, overall water spraying curing, so that the sodium-based bentonite layer 12 in the main body 10 of the waterproof blanket is fully hydrated and expanded to form a dense seepage-proof layer. After curing, a protective layer is covered on the surface of the waterproof blanket to complete the overall laying construction.

[0033] In summary, the present invention also has the following combined effects: This solution integrates an integrated anti-wrinkle structure 20 at the joint end 14 of the waterproof blanket body 10. Using tenon and mortise positioning strips 21, it achieves precise interlocking and self-locking of the two waterproof blankets, preventing misalignment and displacement from the outset. Double-layer tension-distributed reinforcing bars 22 balance the multi-directional tension during laying, while a buffer transition layer 25 eliminates stress differences at structural joints, alleviating deformation and wrinkles caused by localized tension and relaxation. At the joint, a double-layer nested limiting frame 23 constrains the sodium-based bentonite, preventing its movement, accumulation, and localized bulging. Combined with a three-layer composite anti-warping edge 24, it enhances the fit and resilience of the joint edges, suppressing edge warping. After the waterproof blanket is assembled, an independent pressing and reinforcing structure 26 is added to the outside of the integrated anti-wrinkle structure 20. The transverse pressing strip 27 and the longitudinal reinforcing block 28 form a longitudinal and transverse cooperating external pressing system to support the joint as a whole and lock it in sections, further limiting the deformation and misalignment of the joint. Together with the internal anti-wrinkle structure, it forms an internal and external anti-deformation mechanism that is suitable for the entire process of waterproof blanket laying, stress and use after bentonite hydration.

[0034] This device integrates 14 components at the docking end to achieve coordinated docking positioning, tension adjustment, material limiting, edge anti-warping, and stress buffering. It can effectively avoid various wrinkles and defects such as misalignment, uneven tension, bentonite accumulation, and edge warping after the waterproof blanket is docked, and significantly improve the stability of the docking fit.

[0035] The external pressing and reinforcement structure 26, which combines segmentation and continuity, works in conjunction with the internal anti-wrinkle structure to enhance the overall pressing effect of the joint, prevent the joint from loosening, bulging and cracking during later use, and ensure the integrity of the joint position.

[0036] Each structure is integrally formed with the main body of the waterproof blanket and has a reasonable layout. It can adapt to different docking and laying requirements for long and short sides. The rounded corner structure can eliminate stress concentration and adapt to complex on-site laying environments. The structure has stronger adaptability and construction practicality.

[0037] By relying on the limiting frame 23, the anti-warping edge pressing 24 and the overall compaction process, the sealing and fitting of the joint can be guaranteed, the bentonite can be uniformly formed after hydration, the overall seepage prevention performance of the waterproof blanket can be maintained, and the service life of the paving structure can be extended.

[0038] The overall structure is clearly hierarchical and highly modular, with coherent and controllable construction steps. Each anti-wrinkle structure can work together synchronously during the laying process, simplifying the joint treatment process and improving the construction quality of the waterproof blanket connection.

[0039] The embodiments of the present invention have been described above, but the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention, all of which are within the protection scope of the present invention.

Claims

1. A type of anti-wrinkle sodium-based bentonite waterproof blanket, characterized in that, include: The waterproof blanket body (10) includes a fabric face fabric (11), a fabric back fabric (13), and a sodium bentonite layer (12) sandwiched between the two. The joint end (14) of the waterproof blanket body (10) is provided with an integrated anti-wrinkle structure (20), the integrated anti-wrinkle structure (20) includes: The tenon and tenon positioning strip (21) is set on both sides of the mating end (14) for precise interlocking and positioning when the two waterproof blankets are joined. Tension-distributed reinforcement (22) is set inside the tenon and mortise positioning strip (21) to balance the multi-directional tensile force during docking; A limiting frame (23) is set at the joint to restrain the sodium-based bentonite at the joint; Anti-warping edge pressing (24) is provided on the outermost side of the mating end (14) to prevent the mating edge from warping and springing back; A buffer transition layer (25) is laid between the tenon and mortise positioning strip (21), tension distribution reinforcement (22), limiting frame (23), and anti-warping pressing edge (24) to resolve the stress difference between the structures.

2. The sodium-based bentonite waterproof blanket with anti-wrinkle properties according to claim 1, characterized in that, When the two waterproof blankets are joined together to form an integrated anti-wrinkle structure (20), the outer surface of the integrated anti-wrinkle structure (20) is provided with a pressing and reinforcing structure (26), which includes a transverse pressing strip (27) and a longitudinal reinforcing block (28). The transverse pressing strip (27) extends continuously in a direction parallel to the joint and is attached to the outer surface of the integrated anti-wrinkle structure (20) to press and support the joint as a whole, and to suppress bulges and wrinkles at the joint. The longitudinal reinforcing block (28) spans two waterproof blankets in a direction perpendicular to the joint, and is arranged in a segmented and spaced manner. The spanning part presses the integrated anti-wrinkle structure (20) and the main body (10) of the waterproof blanket on both sides to tighten and fix the joint laterally, so as to prevent the two waterproof blankets from misaligning and warping at the edges.

3. The sodium-based bentonite waterproof blanket for butt joint anti-wrinkle as described in claim 1, characterized in that, The tenon and mortise positioning strip (21) is configured as a multi-level stepped tenon and mortise positioning strip (21); the multi-level stepped tenon and mortise positioning strip (21) includes an integrally arranged main positioning tenon, secondary positioning teeth and anti-disengagement hook; The main positioning tenon is a trapezoidal structure that is wider at the top and narrower at the bottom. The secondary positioning teeth are symmetrically arranged on both sides of the main positioning tenon, and the anti-disengagement hooks are set facing the outside of the mating to achieve self-locking during mating.

4. The sodium-based bentonite waterproof blanket for butt joint anti-wrinkle as described in claim 1, characterized in that, The long side of the waterproof blanket body (10) is continuously provided with tenon and tenon positioning strips (21) at the joint end (14); the short side is provided with tenon and tenon positioning strips (21) only in the middle area at the joint end (14), and assembly allowance is reserved at both ends; the corners of the waterproof blanket body (10) are provided with rounded transition structures to eliminate local wrinkles caused by right angle stress concentration.

5. A sodium-based bentonite waterproof blanket for butt joint anti-wrinkle as described in claim 4, characterized in that, The tension distribution reinforcement (22) is configured as a double-layer elastic tension distribution reinforcement (22), which includes a main force reinforcement and a secondary buffer reinforcement. The main tension ribs are made of high elastic fiber filaments arranged in a cross pattern in the horizontal and diagonal directions, and are laid in a way that fits the inside of the tenon and mortise positioning strip (21); the secondary buffer ribs are elastic flexible pads sandwiched between the main tension ribs and the sodium bentonite layer (12), and deformation buffer grooves are reserved at the intersection of the tension ribs. The tension distribution reinforcement (22) is woven together with the surface fabric of the waterproof blanket body (10) and the secondary buffer reinforcement is fixed to the inside of the fabric base (13) by hot pressing composite method.

6. The sodium-based bentonite waterproof blanket for butt joint anti-wrinkle as described in claim 1, characterized in that, The limiting frame (23) is set as a double-layer nested limiting frame (23), which includes an inner flexible limiting soft frame and an outer rigid reinforcing hard frame; the flexible limiting soft frame is a limiting groove structure formed by a thin film enclosure, which covers the bentonite around the joint; the rigid reinforcing hard frame is a segmented prefabricated frame, which is embedded in the edge of the joint end (14), and a water-soluble isolation layer is set between the soft frame and the hard frame.

7. A sodium-based bentonite waterproof blanket for butt joint anti-wrinkle as described in claim 6, characterized in that, The inner side of the double-layer nested limiting frame (23) is aligned with the outer side of the tenon positioning strip (21), the outer side of the limiting frame (23) is flush with the edge of the docking end (14), and the rigid reinforced hard frame is embedded and fixed in the preset groove of the bottom cloth.

8. A sodium-based bentonite waterproof blanket for butt joint anti-wrinkle as described in claim 1, characterized in that, The anti-warping edge (24) is configured as a three-layer composite anti-warping edge (24). The three-layer composite anti-warping edge (24) is integrally fixed to the outermost side of the butt joint (14). It is composed of a wear-resistant base, an elastic intermediate pad, and an anti-slip surface layer. The anti-slip surface layer is provided with an anti-slip toothed structure, and a thickened anti-warping reinforcement strip is provided on the outer side of the edge. The three-layer composite anti-warping edge (24) is connected to the waterproof blanket body (10) as a whole by means of hot-press composite combined with seam reinforcement.

9. A sodium-based bentonite waterproof blanket for butt joint anti-wrinkle as described in claim 1, characterized in that, The buffer transition layer (25) is set as a docking anti-wrinkle buffer transition layer (25). The docking anti-wrinkle buffer transition layer (25) is a flexible elastic thin layer that is fully covered at the connection gap between the tenon positioning strip (21), the tension distribution rib (22), the limiting frame (23) and the anti-warping pressing edge (24) to achieve flexible transition of multiple components.

10. A sodium-based bentonite waterproof blanket for butt joint anti-wrinkle as described in claim 1, characterized in that, It also includes the installation method for waterproof blankets, including the following steps: S1: Base surface cleaning and pretreatment, base surface cleaning and pretreatment level and compact the foundation slope and base surface, complete the base surface cleaning, avoid sharp debris from damaging the fabric face cloth (11), fabric back cloth (13) and sodium bentonite layer (12) of the waterproof blanket body (10). S2: Mortise and tenon joint and tension adjustment, precisely fit and position the mortise and tenon positioning strips (21) of the joint ends (14) of the two adjacent waterproof blankets, evenly pull and flatten the waterproof blanket, so that the tension distribution reinforcement (22) is subjected to balanced force to balance the multi-directional tension of the joint section, and at the same time ensure that the buffer transition layer (25) fits the joint gap of the mortise and tenon positioning strips (21) and the tension distribution reinforcement (22) to eliminate local stress difference; S3: Limiting and solidifying and joint compaction. The limiting frame (23) at the joint is wetted to solidify the prefabricated reinforcement structure of the limiting frame (23), and simultaneously constrain the sodium-based bentonite at the joint to prevent it from moving laterally and accumulating. The pressure roller is used to compact the joint at a uniform speed to ensure that each anti-wrinkle structure fits tightly. S4: Edge pressing and sealing shaping, pressing and bonding the outer anti-warping edge (24) to make the anti-warping edge (24) and the fabric (11) of the waterproof blanket body (10) tightly connected, sealing the joint edge and preventing the joint edge from warping and rebounding; S5: Water curing and protection finishing, overall water curing, so that the sodium-based bentonite layer (12) in the main body (10) of the waterproof blanket is fully hydrated and expanded to form a dense seepage-proof layer. After curing, a protective layer is covered on the surface of the waterproof blanket to complete the overall laying construction.

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