Fiber concrete curable blanket

Abstract

The utility model relates to the technical field of cement blankets, and discloses a fiber concrete curable blanket which comprises a water absorption protection layer, a high-strength low-elongation reinforced net, a needle-punched composite plastic woven geotechnical cloth layer, a rubber coating, a concrete dry powder layer, fiber bundles and an isolating membrane. The top surface of the concrete dry powder layer is provided with a high-strength low-elongation reinforced net, and the bottom surface of the concrete dry powder layer is provided with a needle-punched composite plastic woven geotextile layer; a water absorption protection layer is arranged on the top surface of the high-strength low-elongation reinforced net; a rubber coating is arranged on the bottom surface of the needle-punched composite plastic woven geotextile layer; the fiber bundles are vertically arranged in the concrete dry powder layer, the upper ends of the fiber bundles are connected with the water absorption protection layer, and the lower ends of the fiber bundles are connected with the needling composite plastic woven geotechnical cloth layer. An isolating membrane is arranged on the bottom surface of the rubber coating. The anti-tensile property of the curing blanket can be improved, water seepage and leakage are prevented, deformation or damage is not prone to occurring, and meanwhile water and soil loss is avoided.

Description

Technical Field

[0001] This utility model relates to the field of cement blanket technology, and in particular to a fiber-reinforced concrete curable blanket. Background Technology

[0002] Needle-punched cement blanket, as a new type of building material, has been widely used in civil engineering and construction in recent years. After being laid, the needle-punched cement blanket is saturated with water in one go. The dry concrete powder absorbs the water and undergoes a hydration reaction, eventually hardening into a plate-like structure with a certain thickness and hardness. During production and processing, the dry concrete powder is first evenly spread on a plastic woven fabric, then covered with needle-punched nonwoven fabric, and the three layers are tightly bonded together by a needle-punching machine. Needle-punched cement blanket is convenient to transport and construct. Before hardening, it is a flexible blanket-like material that can be shaped and closely adhere to any shape of foundation surface, reducing construction difficulty and cost. It has been widely used in projects such as fishpond slope protection, aquaculture, and temporary field roads.

[0003] However, needle-punched cement blankets still have some problems and shortcomings in construction and use. Traditional needle-punched cement blankets have limited tensile strength and stability when facing significant external forces or complex environments, making them prone to deformation or damage. Their waterproofing performance mainly relies on the concrete layer, but the three-layer structure of needle-punched cement blankets is connected by fiber bundles drawn from the surface layer (water-absorbing protective layer). These fiber bundles penetrate the entire three-layer structure of the cement blanket, and while they have water absorption and conduction functions, they can guide water from the upper layer to the bottom of the cement blanket, meaning the entire cement blanket structure cannot achieve complete leak-proof functionality. Furthermore, due to their low interlayer peel strength, needle-punched cement blankets are prone to interlayer peeling during transportation and installation, leading to the loss, slippage, and accumulation of dry concrete powder within the blanket, affecting the overall structural stability and strength. Moreover, the curing time of needle-punched cement blankets is relatively long, requiring a considerable amount of time after construction to reach the design strength, making it difficult to meet the requirements of rapid construction in some urgent projects. Utility Model Content

[0004] The purpose of this invention is to provide a fiber-reinforced concrete curable blanket that improves the tensile strength of the curable blanket and prevents moisture penetration and leakage, making the blanket more structurally stable and preventing moisture from seeping from the bottom, thus reducing deformation or damage and preventing soil erosion. The specific technical solution is as follows:

[0005] A fiber-reinforced concrete curable blanket includes an absorbent protective layer, a high-strength, low-elongation reinforcing mesh, a needle-punched composite woven geotextile layer, a rubber coating, a concrete powder layer, fiber bundles, and a release membrane.

[0006] The top surface of the concrete dry powder layer is provided with a high-strength, low-elongation reinforcing mesh, and the bottom surface is provided with a needle-punched composite woven geotextile layer; the top surface of the high-strength, low-elongation reinforcing mesh is provided with a water-absorbing protective layer; the bottom surface of the needle-punched composite woven geotextile layer is provided with a rubber coating; the fiber bundles are vertically arranged inside the concrete dry powder layer, with the upper end of the fiber bundle connected to the water-absorbing protective layer and the lower end connected to the needle-punched composite woven geotextile layer; the bottom surface of the rubber coating is provided with an isolation membrane.

[0007] Preferably, it also includes an anchoring trench and a base layer; the top surface of the base layer has an anchoring trench, and a curing blanket is laid on the top surface of the base layer; the four sides of the curing blanket are laid in the anchoring trench.

[0008] Preferably, it also includes a first U-shaped nail and a second U-shaped nail; the first U-shaped nail is nailed in the middle of the curing blanket; the second U-shaped nail is nailed at the overlap of the two overlapping curing blankets.

[0009] Preferably, the absorbent protective layer is a single-layer needle-punched nonwoven fabric or a double-layer needle-punched nonwoven fabric.

[0010] Preferably, the fiber length of the absorbent protective layer is 76 cm.

[0011] Preferably, the double-layer needle-punched nonwoven fabric includes a lower needle-punched nonwoven fabric and a surface needle-punched nonwoven fabric; the fiber fineness of the lower needle-punched nonwoven fabric is 8 dtex; and the fiber fineness of the surface needle-punched nonwoven fabric is 4 dtex.

[0012] Preferably, the needle-punched composite woven geotextile layer is a composite fabric made of woven geotextile and needle-punched geotextile.

[0013] Compared with existing technologies, this utility model has the following beneficial effects:

[0014] This invention improves the tensile strength of the curing blanket by setting a high-strength, low-elongation reinforcing mesh on the top surface of the dry concrete powder layer. This allows the curing blanket to maintain structural stability and resist deformation or damage even under significant external forces. Simultaneously, the fiber bundles are vertically positioned inside the dry concrete powder layer, connected to an absorbent protective layer at the upper end and a needle-punched composite woven geotextile layer at the lower end. The needle-punched composite woven geotextile layer clamps and fixes the fiber bundles within the structure, enhancing interlayer bonding strength and effectively transferring stress, further improving the overall stability of the curing blanket.

[0015] In addition, a water-absorbing protective layer, a release membrane, and a rubber coating are also provided. The rubber coating is a 0.3-0.5mm thick two-component waterproof rubber coating sprayed onto the bottom surface of the composite woven fabric layer. This prevents moisture from penetrating from the bottom of the curing blanket, protecting the foundation structure of the paving site from moisture erosion, preventing soil erosion, and extending the service life of the overall project structure. A release membrane is installed on the bottom surface of the rubber coating to prevent incompletely cured rubber coating from sticking to the upper non-woven fabric during the rolling process, ensuring that the quality of the curing blanket is not affected during storage and transportation. The water-absorbing protective layer can absorb a certain amount of moisture and transfer it to the concrete dry powder layer, providing sufficient moisture for the hydration reaction and completing the curing process. It also prevents excessively rapid evaporation of moisture during curing, which could lead to incomplete curing of the concrete dry powder layer, thus ensuring the stable performance of the entire curing blanket. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the anchoring trench of this utility model.

[0019] Figure 3 This is a schematic diagram of the installation structure of the first U-shaped nail and the second U-shaped nail of this utility model.

[0020] Explanation of key figure labels:

[0021] 1-Water-absorbing protective layer, 2-High-strength low-elongation reinforcing mesh, 3-Needle-punched composite woven geotextile layer, 4-Rubber coating, 5-Concrete dry powder layer, 6-Fiber bundle, 7-Isolation membrane, 8-Anchoring trench, 9-Curing blanket, 10-Base layer, 11-First U-shaped nail, 12-Second U-shaped nail. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0026] Example 1

[0027] As shown in the figure, a fiber-reinforced concrete curable blanket includes an absorbent protective layer 1, a high-strength, low-elongation reinforcing mesh 2, a needle-punched composite woven geotextile layer 3, a rubber coating 4, a concrete dry powder layer 5, fiber bundles 6, and a release membrane 7. The top surface of the concrete dry powder layer 5 is provided with the high-strength, low-elongation reinforcing mesh 2, and the bottom surface is provided with the needle-punched composite woven geotextile layer 3. The top surface of the high-strength, low-elongation reinforcing mesh 2 is provided with the absorbent protective layer 1. The bottom surface of the needle-punched composite woven geotextile layer 3 is provided with the rubber coating 4. The fiber bundles 6 are vertically arranged inside the concrete dry powder layer 5, with the upper end of the fiber bundles 6 connected to the absorbent protective layer 1 and the lower end connected to the needle-punched composite woven geotextile layer 3. The bottom surface of the rubber coating 4 is provided with the release membrane 7.

[0028] Next, the working principle of this embodiment will be described in detail so that those skilled in the art can better understand this utility model:

[0029] The absorbent protective layer 1 is located on the top layer of the curing blanket. It protects the internal structure from external environmental erosion and absorbs a certain amount of moisture, providing a suitable curing environment for the concrete dry powder layer 5 and preventing uneven curing of the concrete dry powder layer 5 due to excessively rapid moisture evaporation. The high-strength, low-elongation reinforcing mesh 2 is laid on the top surface of the concrete dry powder layer 5. It has the characteristics of high strength and low elongation, which can effectively enhance the overall strength and stability of the curing blanket. It is tightly bonded with the absorbent protective layer 1 and the concrete dry powder layer 5 to form a stable structural layer, which together bears external pressure and tension. The fiber bundles 6 are vertically arranged inside the concrete dry powder layer 5. The upper end is connected to the high-strength, low-elongation reinforcing mesh 2, and the lower end is connected to the needle-punched composite woven geotextile layer 3. This allows the fiber bundles 6 to effectively transfer stress during the curing process, evenly distributing the tension and pressure of the upper layer to the lower layer, enhancing the interlayer bonding strength of the curing blanket, and preventing interlayer delamination. The needle-punched composite woven geotextile layer 3 serves as the lower layer of the curing blanket, acting as a water control and reinforcement layer. It possesses excellent friction and clamping properties, effectively holding the fiber bundles 6 and preventing displacement or loosening during curing. Furthermore, the needle-punched composite woven geotextile layer 3 effectively controls moisture penetration and diffusion, ensuring the concrete dry powder layer 5 cures under suitable humidity conditions, preventing poor curing or structural damage caused by excessive moisture. The rubber coating 4, sprayed onto the bottom surface of the needle-punched composite woven geotextile layer 3 with a thickness of 0.3-0.5 mm, provides waterproofing, effectively preventing moisture penetration from the bottom of the curing blanket and protecting the foundation layer 10 structure beneath the curing blanket from moisture erosion, thus extending the service life of the curing blanket and the overall engineering structure. The release membrane 7 is placed on the bottom surface of the rubber coating 4 to prevent the incompletely cured rubber coating 4 from adhering to the upper nonwoven fabric during roll forming.

[0030] When installing the curing blanket as defined in this application, first remove vegetation, tree roots, loose soil, gravel, garbage, and any other debris from the slope that may affect the adhesion or strength of the fiber-reinforced concrete curing blanket. Next, level the slope as much as possible, filling large potholes and smoothing sharp protrusions to provide a relatively flat and stable working surface. Some undulation is permissible, but large steps or steep slopes should be avoided. For soft soil slopes, proper compaction is necessary to increase the density of the base surface and prevent unexpected settlement. Finally, inspect the construction area and remove any sharp objects to avoid puncturing or damaging the curing blanket. Then, transport the fiber-reinforced concrete curing blanket to the installation site, taking care not to damage the packaging during transportation and loading / unloading. Cut the fiber-reinforced concrete curing blanket to the required dimensions for the installation area, including the dimensions within the anchoring trench. This step can be done in advance during factory production, i.e., the factory can produce the blanket directly according to the actual dimensions of the installation site. The fiber-reinforced concrete curable blanket is laid from the top of the slope downhill by rolling. For slopes longer than 5m, a roll rope can be used to slowly lower the blanket from top to bottom until it reaches the bottom. For flat surfaces, it can be laid by pushing and rolling from one end. Two sheets of cement blanket are connected by overlapping, with an overlap width of not less than 10cm. After the fiber-reinforced concrete curable blanket is laid, the overlap is sealed with cement mortar or structural adhesive. Use a sewage pump or other low-flow water pump connected to a hose to water and harden the cement blanket. The water flow should not be too high to avoid washing out the dry concrete powder in the blanket.

[0031] Example 2

[0032] This embodiment differs from Embodiment 1 in that it also includes an anchoring trench 8 and a base layer 10. An anchoring trench 8 is formed on the top surface of the base layer 10, and the curing blanket is laid on top of the base layer 10. The four sides of the curing blanket are respectively laid within the anchoring trench 8. The anchoring trench 8 is located on the top surface of the base layer 10 and is used to fix the sides of the fiber-reinforced concrete curing blanket, ensuring that the curing blanket can firmly adhere to the slope after laying, preventing slippage due to external forces or its own weight. Its width and depth can be set to 30cm-40cm, and the size design provides sufficient space for effective anchoring. The base layer 10 serves as the foundation for laying the curing blanket and can withstand the weight of the curing blanket as well as various loads that may occur during construction and use. The anchoring trench 8 is formed on the top surface of the base layer 10, allowing the sides of the curing blanket to be embedded within the anchoring trench 8. During installation, the process includes anchoring trenches 8 and a base layer 10. When the base layer 10 is a slope, anchoring trenches 8 are dug at both the top and bottom of the slope. When the base layer 10 is a flat surface, anchoring trenches 8 are also dug around its perimeter. The curing blanket is then laid on top of the base layer 10. The top and bottom ends (for slope installation) and the four sides (for flat installation) of the curing blanket are respectively laid within the anchoring trenches 8. The width and depth of the anchoring trenches 8 are both 30cm-40cm. The four sides of the curing blanket are laid within the anchoring trenches 8 to ensure that the sides can be embedded in the anchoring trenches 8, preventing the curing blanket from slipping during use.

[0033] The working principle of this embodiment is the same as that of Embodiment 1.

[0034] Example 3

[0035] The difference between this embodiment and Embodiment 2 is that it also includes a first U-shaped nail 11 and a second U-shaped nail 12; the first U-shaped nail 11 is nailed in the middle of the curing blanket; the second U-shaped nail 12 is nailed at the overlap of the two overlapping curing blankets. The diameter of the first U-shaped nail 11 and the second U-shaped nail 12 is not less than 6mm and the length is not less than 20cm to provide sufficient fixing force. The first U-shaped nail 11 is nailed in the middle of the curing blanket to further fix the curing blanket and prevent it from shifting or deforming due to external forces during use. The second U-shaped nail 12 is nailed at the overlap of the two overlapping curing blankets to strengthen the fixing effect of the overlap and prevent the overlap from separating or loosening due to external forces. The first U-shaped nail 11 can be nailed every 80cm-100cm in the middle of the curing blanket to ensure that the middle of the curing blanket can be firmly fixed to the base layer 10. A second U-shaped nail 12 can be driven into the overlap of the two overlapping curing blankets every 80cm-100cm to ensure that the overlap can be firmly fixed and to prevent the overlap from separating or loosening due to external force.

[0036] The working principle of this embodiment is the same as that of Embodiment 1.

[0037] Example 4

[0038] The difference between this embodiment and Embodiment 3 is that the absorbent protective layer 1 is a single-layer needle-punched nonwoven fabric or a double-layer needle-punched nonwoven fabric. The double-layer needle-punched nonwoven fabric includes a lower needle-punched nonwoven fabric and a surface needle-punched nonwoven fabric; the fiber fineness of the lower needle-punched nonwoven fabric is 8 dtex; the fiber fineness of the surface needle-punched nonwoven fabric is 4 dtex. The double-layer structure further improves interlayer peel strength and makes the surface layer denser, enhancing abrasion resistance.

[0039] The working principle of this embodiment is the same as that of Embodiment 1.

[0040] Example 5

[0041] The difference between this embodiment and embodiment 4 is that the fiber length of the absorbent protective layer 1 is 76cm.

[0042] The fiber length of the absorbent protective layer 1 is changed from 51cm to 76cm in ordinary needle-punched cement blankets. This can reduce fiber breakage and the phenomenon of the entire fiber being pulled out of the upper fabric due to excessive fiber displacement caused by the needle hook during the needle-punching production process, thereby improving the interlayer peeling force and enhancing the stability of the overall structure.

[0043] The working principle of this embodiment is the same as that of Embodiment 1.

[0044] Example 6

[0045] The difference between this embodiment and embodiment 5 is that the needle-punched composite woven geotextile layer 3 is a composite fabric made of woven geotextile and needle-punched geotextile.

[0046] The needle-punched composite woven geotextile layer 3 is a composite fabric of 80-90g / ㎡ woven geotextile and 130-150g / ㎡ needle-punched geotextile. The composite of woven geotextile and needle-punched geotextile increases the friction between the fiber bundles 6 of the water-control reinforcement layer and the water-absorbing protective layer 1 brought by the needle hooks, improves the clamping force on the fiber bundles 6, and thus improves the interlayer peel force of the fiber concrete curable blanket.

[0047] The working principle of this embodiment is the same as that of Embodiment 1.

[0048] In summary, this invention improves the tensile strength of the curing blanket by setting a high-strength, low-elongation reinforcing mesh on the top surface of the concrete dry powder layer. This allows the curing blanket to maintain structural stability and prevent deformation or damage even under significant external forces. Simultaneously, the fiber bundles are vertically positioned inside the concrete dry powder layer, connected to an absorbent protective layer at the upper end and a needle-punched composite woven geotextile layer at the lower end. The needle-punched composite woven geotextile layer clamps and fixes the fiber bundles within the structure, enhancing interlayer bonding strength and effectively transferring stress, further improving the overall stability of the curing blanket.

[0049] In addition, a water-absorbing protective layer, a release membrane, and a rubber coating are also provided. The rubber coating is a 0.3-0.5mm thick two-component waterproof rubber coating sprayed onto the bottom surface of the composite woven fabric layer. This prevents moisture from penetrating from the bottom of the curing blanket, protecting the foundation structure of the paving site from moisture erosion, preventing soil erosion, and extending the service life of the overall project structure. A release membrane is installed on the bottom surface of the rubber coating to prevent incompletely cured rubber coating from sticking to the upper non-woven fabric during the rolling process, ensuring that the quality of the curing blanket is not affected during storage and transportation. The water-absorbing protective layer can absorb a certain amount of moisture and transfer it to the concrete dry powder layer, providing sufficient moisture for the hydration reaction and completing the curing process. It also prevents excessively rapid evaporation of moisture during curing, which could lead to incomplete curing of the concrete dry powder layer, thus ensuring the stable performance of the entire curing blanket.

[0050] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A fiber-reinforced concrete curable blanket, characterized in that, It includes a water-absorbing protective layer, a high-strength low-elongation reinforcing mesh, a needle-punched composite woven geotextile layer, a rubber coating, a concrete dry powder layer, fiber bundles, and a release membrane; The top surface of the concrete dry powder layer is provided with a high-strength, low-elongation reinforcing mesh, and the bottom surface is provided with a needle-punched composite woven geotextile layer; the top surface of the high-strength, low-elongation reinforcing mesh is provided with a water-absorbing protective layer; the bottom surface of the needle-punched composite woven geotextile layer is provided with a rubber coating; the fiber bundles are vertically arranged inside the concrete dry powder layer, with the upper end of the fiber bundle connected to the water-absorbing protective layer and the lower end connected to the needle-punched composite woven geotextile layer; the bottom surface of the rubber coating is provided with an isolation membrane.

2. The fiber-reinforced concrete curable blanket according to claim 1, characterized in that, It also includes an anchoring trench and a base layer; the top surface of the base layer has an anchoring trench, and a curing blanket is laid on the top surface of the base layer; the four sides of the curing blanket are laid in the anchoring trench.

3. The fiber-reinforced concrete curable blanket according to claim 1, characterized in that, It also includes a first U-shaped nail and a second U-shaped nail; the first U-shaped nail is nailed in the middle of the curing blanket; the second U-shaped nail is nailed at the overlap of the two overlapping curing blankets.

4. The fiber-reinforced concrete curable blanket according to claim 1, characterized in that, The absorbent protective layer is a single-layer needle-punched nonwoven fabric or a double-layer needle-punched nonwoven fabric.

5. The fiber-reinforced concrete curable blanket according to claim 1, characterized in that, The fiber length of the absorbent protective layer is 76 cm.

6. The fiber-reinforced concrete curable blanket according to claim 4, characterized in that, The double-layer needle-punched nonwoven fabric includes a lower needle-punched nonwoven fabric and a surface needle-punched nonwoven fabric; the fiber fineness used in the lower needle-punched nonwoven fabric is 8 dtex; the fiber fineness used in the surface needle-punched nonwoven fabric is 4 dtex.

7. The fiber-reinforced concrete curable blanket according to claim 1, characterized in that, The needle-punched composite woven geotextile layer is a composite fabric made by combining woven geotextile and needle-punched geotextile.

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