A needle-punched reinforced composite cement blanket

Abstract

The utility model discloses a kind of needle punching reinforced composite cement blanket, belong to building material technical field, including surface cloth, layered mechanism and flanging mechanism, carbon fiber microfilament is premixed in surface cloth, layered mechanism includes reinforced layer, composite cement layer and hydrophobic cloth, reinforced layer includes water-permeable cloth and rib block, water-permeable cloth is connected surface cloth by needle punching technology and is provided with water-permeable hole, hydrophobic cloth is implanted with rubber microparticle and surface is activated by plasma, flanging mechanism includes bunching strip, bunching strip is provided with inner groove for clamping surface cloth edge, bunching strip is also welded with lifting ring. The utility model by above-mentioned structure, so that cement blanket has high tensile crack resistance, high wear resistance and slope skid resistance, and the setting of flanging mechanism facilitates the binding, hoisting and transportation of cement blanket, and the structure integration degree is high, construction is convenient.

Description

Technical Field

[0001] This utility model relates to the field of building materials technology, and in particular to a needle-punched reinforced composite cement blanket. Background Technology

[0002] Cement blankets, also known as concrete canvas, are flexible textiles impregnated with cement-based composite materials. When exposed to water, they undergo a hydration reaction and harden rapidly, forming a strong and durable thin layer of concrete. In the fields of civil engineering, water conservancy protection, and infrastructure construction, they are often used as a quick solution for channel lining, slope protection, or ground hardening.

[0003] However, existing cement blankets still have some shortcomings in practical applications. First, conventional cement blankets are essentially thin-shell concrete structures after hardening. Although they have a certain compressive strength, their tensile, crack, and bending resistance is poor. When faced with uneven settlement of the foundation or external impact, they will undergo brittle fracture, affecting the long-term protective effect of the cement blanket. At the same time, the wear resistance of the cement blanket surface also needs to be improved, as it will be worn down by water erosion or people stepping on it.

[0004] When carrying out slope protection and other sloping construction, the base material of traditional cement blankets only considers water retention or impermeability, lacking a special design for effective anchoring with the foundation ground or improving friction. This results in insufficient adhesion of the cement blankets during laying, especially before hardening, which can lead to landslides or displacement. This not only affects the construction accuracy but also leads to protection failure. Furthermore, cement blankets are usually supplied in roll form, which needs to be unrolled and hoisted on the construction site. Existing cement blanket products lack specialized integrated designs for binding and fixing after rolling and for overall hoisting. Workers usually need to temporarily use ropes or packing straps for binding, which is cumbersome and the fixing effect is unreliable. There is also a lack of safe and convenient hoisting points, which increases the difficulty of construction and labor intensity.

[0005] Therefore, this utility model proposes a needle-punched reinforced composite cement blanket to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems of insufficient reinforcement performance, easy cracking, poor slope anti-slip properties and lack of integrated handling structure in the existing needle-reinforced composite cement blanket, the present invention aims to provide a needle-reinforced composite cement blanket with improved structure that can effectively solve the above problems.

[0007] This utility model provides a needle-punched reinforced composite cement blanket, comprising: a surface fabric, a layering mechanism, and an edge-rolling mechanism.

[0008] The layered structure includes a reinforced layer, a composite cement layer, and a hydrophobic cloth stacked from top to bottom. The reinforced layer includes a permeable cloth and reinforcing bars from top to bottom. The permeable cloth has multiple permeable holes on its surface. Rubber microparticles are embedded in the hydrophobic cloth, and the surface of the hydrophobic cloth is treated with plasma activation.

[0009] The hemming mechanism includes a gathering strip, an inner groove on the left side of the gathering strip, a hanging ring welded to the right side of the gathering strip, a gathering box on the top of the gathering strip, an elastic band rotatably connected to the gathering box, a locking block fixedly connected to the top of the elastic band, and a locking groove on the right side of the gathering strip, the locking block being used to engage in the locking groove.

[0010] Furthermore, the layering mechanism is located below the surface fabric, the permeable fabric is tightly connected to the surface fabric through needle punching technology, and the edge rolling mechanism is located at the edge of the surface fabric, with the edge of the surface fabric engaging with the inner groove.

[0011] Preferably, the substrate of the surface fabric is a blended needle-punched geotextile.

[0012] Preferably, the substrate weight of the surface fabric is between 210 and 230 grams per square meter.

[0013] Preferably, the carbon fiber microfilaments are 6 mm in length and 18 micrometers in diameter.

[0014] Preferably, the reinforcing blocks are evenly distributed within the reinforcing layer.

[0015] Preferably, the substrate of the hydrophobic fabric is short fiber needle-punched geotextile.

[0016] Preferably, the substrate weight of the hydrophobic fabric is between 365 and 395 grams per square meter.

[0017] Preferably, the particle size of the rubber microparticles is 80 to 120 micrometers.

[0018] This utility model has the following beneficial effects: 1. This utility model solves the problems of cement blankets being difficult to bind and fix, lacking a dedicated hoisting structure, and causing inconvenience in overall handling and construction in the prior art by setting up a curling mechanism composed of a gathering strip, a lifting ring, a gathering box, an elastic band, a locking block, and a locking groove. It achieves the effect of high structural integration, quick binding and packaging, and convenient hoisting and transportation. 2. This utility model solves the problems of insufficient strength, easy cracking, poor surface wear resistance and bending resistance of cement blankets after hardening by premixing carbon fiber microfilaments in the surface fabric and setting uniformly arranged ribs in the reinforcing layer. It achieves the effect of significantly improving the tensile strength, crack resistance and impact resistance of cement blankets, and enhancing the surface wear resistance and bending resistance of cement blankets after hardening. 3. This utility model solves the problem of landslides and displacements caused by insufficient adhesion when cement blankets are laid on complex terrains such as slopes by embedding rubber microparticles in the bottom layer of hydrophobic cloth and performing plasma activation treatment on the surface of the hydrophobic cloth. It achieves the effects of improving the adhesion between cement blankets and the base ground, effectively preventing slippage, and improving construction stability. Attached Figure Description

[0019] Figure 1 This is a perspective view of a needle-punched reinforced composite cement blanket proposed in this utility model; Figure 2 This is a cross-sectional view of the surface fabric of a needle-punched reinforced composite cement blanket proposed in this utility model. Figure 3 This is a cross-sectional view of the reinforcing layer of a needle-punched reinforced composite cement blanket proposed in this utility model; Figure 4 This is a schematic diagram of the structure of the binding strip of a needle-punched reinforced composite cement blanket proposed in this utility model.

[0020] Legend: 1. Surface fabric; 2. Layered mechanism; 201. Reinforcing layer; 202. Composite cement layer; 203. Permeable fabric; 204. Permeable holes; 205. Reinforcing block; 206. Water-repellent fabric; 3. Hemming mechanism; 301. Gathering strip; 302. Inner groove; 303. Hanging ring; 304. Gathering box; 305. Elastic band; 306. Locking block; 307. Locking groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in 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 embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0022] Example: Please refer to Figures 1 to 4 This utility model provides a needle-punched reinforced composite cement blanket, which aims to solve the problems of existing cement blankets having single structural function, insufficient wear and crack resistance, poor anti-slip performance on slopes, and lack of integrated handling structure, which leads to inconvenience in construction.

[0023] Please refer to Figure 2 , Figure 3 and Figure 4A needle-punched reinforced composite cement blanket includes a surface fabric 1, a layering mechanism 2 disposed below the surface fabric 1, and an edge-rolling mechanism 3 disposed at the edge of the surface fabric 1. The surface fabric 1 is premixed with carbon fiber microfilaments. The layering mechanism 2 includes a reinforcing layer 201, a composite cement layer 202, and a hydrophobic fabric 206 stacked sequentially from top to bottom. The reinforcing layer 201 includes a permeable fabric 203 and reinforcing blocks 205 from top to bottom. The permeable fabric 203 is tightly connected to the surface fabric 1 by needle punching technology. The surface of the permeable fabric 203 has multiple permeable holes 204. The hydrophobic fabric 206 is embedded with rubber. The adhesive microparticles and the surface of the hydrophobic fabric 206 are plasma activated. The hemming mechanism 3 includes a gathering strip 301. An inner groove 302 is provided on the left side of the gathering strip 301. The edge of the surface fabric 1 is engaged and connected to the inner groove 302. A hanging ring 303 is welded to the right side of the gathering strip 301. A gathering box 304 is provided at the top of the gathering strip 301. An elastic band 305 is rotatably connected to the gathering box 304. A locking block 306 is fixedly connected to the top of the elastic band 305. A locking groove 307 is provided on the right side of the gathering strip 301. The locking block 306 is used to engage in the locking groove 307.

[0024] Please refer to Figure 2 and Figure 3 The base material of the surface fabric 1 is a blended needle-punched geotextile. The weight of the surface fabric 1 is controlled between 210 g / m² and 230 g / m². The surface fabric 1 is pre-mixed with carbon fiber microfilaments, each 6 mm long and 18 micrometers in diameter. The surface fabric 1 has excellent water conductivity, facilitating rapid water penetration to promote the hardening of the cement blanket. After hardening, the surface fabric 1 is tightly bonded to the internal cement hydration products, significantly improving the surface wear resistance and bending resistance of the cement blanket. The layering mechanism 2 is located directly below the surface fabric 1. The layering mechanism 2 utilizes different layer structures to perform different functions. The reinforcing layer 201 in the layering mechanism 2 has… With a complex internal structure, the reinforced layer 201 is provided with permeable cloth 203 and reinforcing blocks 205 from top to bottom. The permeable cloth 203 is connected to the top surface cloth 1 and is tightly connected to the surface cloth 1 by needle punching technology. Multiple permeable holes 204 are opened on the surface of the permeable cloth 203, which facilitate the flow of water from the upper layer through the permeable cloth 203 into the lower layer. The reinforcing blocks 205 are evenly distributed inside the reinforced layer 201. The reinforcing blocks 205 effectively improve the tensile strength, crack resistance and impact resistance of the cement blanket. The specific arrangement of the reinforcing blocks 205 does not affect the flexibility of the cement blanket before shaping. The cement blanket can adapt to various complex terrains and curved surface laying requirements.

[0025] The composite cement layer 202 contains specially formulated dry powder concrete and cement composite materials. Upon contact with water, the composite cement layer 202 undergoes a hydration reaction and hardens within a certain time, forming a uniformly thick concrete layer to provide rigid support. The hydrophobic fabric 206 substrate is made of short-fiber needle-punched geotextile, with a weight controlled between 365 g / m² and 395 g / m². Rubber microparticles with a particle size of 80 to 120 micrometers are embedded during the needle-punching process. The surface of the hydrophobic fabric 206 is plasma-activated, making it resistant to deformation and improving bottom adhesion. The hydrophobic fabric 206 also prevents the cement blanket from sliding on slopes. Overall, the cement blanket exhibits high strength and good durability.

[0026] In a preferred embodiment, the substrate of the surface fabric 1 is a blended needle-punched geotextile, and further, the substrate weight of the surface fabric 1 is between 210 and 230 grams per square meter.

[0027] As another preferred embodiment, in order to accurately control the water-conducting and reinforcing effects of the surface fabric 1, the length of the carbon fiber microfilaments premixed with carbon fiber microfilaments is preferably 6 mm, and the diameter of the carbon fiber microfilaments is preferably 18 micrometers.

[0028] As another preferred embodiment, in order to ensure that the reinforcing layer 201 is subjected to uniform stress and does not affect its flexibility, the reinforcing blocks 205 are evenly distributed within the reinforcing layer 201.

[0029] As another preferred embodiment, in order to improve the anti-slip and durability of the bottom, the substrate of the hydrophobic fabric 206 is a short fiber needle-punched geotextile. Furthermore, the substrate weight of the hydrophobic fabric 206 is between 365 and 395 grams per square meter, and the particle size of the rubber microparticles embedded in the hydrophobic fabric 206 is preferably between 80 and 120 micrometers.

[0030] Working principle: During transportation and handling, the cement blanket is in the form of a rolled blanket. At this time, the elastic band 305 on the edge rolling mechanism 3 is pulled out from the gathering box 304. The elastic band 305 is tied around the rolled edge of the blanket. The locking block 306 at the top of the elastic band 305 is engaged into the locking groove 307 on the right side of the gathering strip 301, which completes the binding and packaging, making transportation convenient. When hoisting is required, the entire blanket can be hoisted and transported through the lifting ring 303 welded to the right side of the gathering strip 301. During the laying process, water is introduced from the surface fabric 1. The carbon fiber microfilaments of the surface fabric 1 have water-conducting capabilities. After passing through the surface fabric 1, the water flows evenly into the composite cement layer 202 through the water-permeable fabric 203 in the reinforcing layer 201 through the water-permeable holes 204. This causes the composite cement layer 202 to undergo a hydration reaction and harden. During the hardening process, the composite cement layer 202 is tightly bonded to the reinforcing blocks 205 in the reinforcing layer 201, providing tensile, crack, and impact resistance. The hardened surface fabric 1 has improved surface wear resistance and bending resistance due to the carbon fiber microfilaments. Meanwhile, the bottom hydrophobic fabric 206, with its embedded rubber microparticles and plasma-activated surface, provides high adhesion to the base surface, preventing landslides during slope construction.

Claims

1. A needle-punched reinforced composite cement blanket, comprising: The surface fabric (1), the layering mechanism (2) disposed below the surface fabric (1), and the hemming mechanism (3) disposed at the edge of the surface fabric (1); The surface fabric (1) is characterized by being premixed with carbon fiber microfilaments, and the layered structure (2) includes a reinforcing layer (201), a composite cement layer (202), and a hydrophobic fabric (206) stacked sequentially from top to bottom. The reinforcing layer (201) includes a permeable fabric (203) and reinforcing blocks (205) from top to bottom. The permeable fabric (203) is tightly connected to the surface fabric (1) by needle punching technology. The surface of the permeable fabric (203) is provided with multiple permeable holes (204). Rubber microparticles are embedded in the hydrophobic fabric (206), and the surface of the hydrophobic fabric (206) is treated with plasma activation. The hemming mechanism (3) includes a gathering strip (301), an inner groove (302) is provided on the left side of the gathering strip (301), the edge of the surface fabric (1) is engaged and connected in the inner groove (302), a hanging ring (303) is welded on the right side of the gathering strip (301), a gathering box (304) is provided on the top of the gathering strip (301), an elastic band (305) is rotatably connected to the gathering box (304), a locking block (306) is fixedly connected to the top of the elastic band (305), a locking groove (307) is provided on the right side of the gathering strip (301), and the locking block (306) is used to engage in the locking groove (307).

2. The needle-punched reinforced composite cement blanket according to claim 1, characterized in that, The substrate of the surface fabric (1) is a blended needle-punched geotextile.

3. The needle-punched reinforced composite cement blanket according to claim 2, characterized in that, The substrate weight of the surface fabric (1) is between 210 and 230 grams per square meter.

4. The needle-punched reinforced composite cement blanket according to claim 1, characterized in that, The carbon fiber microfilaments are 6 millimeters long and 18 micrometers in diameter.

5. The needle-punched reinforced composite cement blanket according to claim 1, characterized in that, The reinforcing blocks (205) are evenly distributed within the reinforcing layer (201).

6. The needle-punched reinforced composite cement blanket according to claim 1, characterized in that, The base material of the hydrophobic fabric (206) is short fiber needle-punched geotextile.

7. The needle-punched reinforced composite cement blanket according to claim 6, characterized in that, The substrate weight of the hydrophobic fabric (206) is between 365 and 395 grams per square meter.

8. The needle-punched reinforced composite cement blanket according to claim 6, characterized in that, The particle size of the rubber microparticles is 80 to 120 micrometers.

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