RU237361U1 - FLEXIBLE CONCRETE CANVAS - Google Patents

Abstract

This utility model relates to building materials, specifically flexible multilayer cement-fabric products. The technical result is increased tensile and bending strength of the fabric. This is achieved through the design of a flexible concrete fabric made of three layers joined by a knitting and stitching method. The top and bottom layers are made of woven or non-woven material, and the middle layer is made of a cement mixture containing at least 40% alumina cement by weight. The middle layer contains reinforcement, and the fabric is stitched in a zigzag pattern at regular intervals.

Description

AREA OF TECHNOLOGY

[0001] The utility model relates to the field of building materials, in particular to flexible multilayer cement-fabric products.

LEVEL OF TECHNOLOGY

[0002] A structural concrete sheet based on fine-grained modified concrete is known from the prior art (patent RU 221771 U1, 22.11.2023), which includes a middle layer of modified dry concrete mix, enclosed between lower and upper sheets of rolled woven or non-woven material fastened together, the lower sheet is made with folded edges on the sides, and the sheets themselves are selected so that they allow moisture to pass through, but at the same time the cement mixture does not spill out through them, while the sheets are fastened by stitching with thin bundles (threads) based on basalt fiber; modified fine-grained concrete based on a composite binder is used as the core material, containing, by weight %:

Portland cement 44.0 finely ground mechanically activated volcanic tuff 21.0 quartz sand (a mixture of grains of medium diameter 1.0-1.4 mm - 40%, diameter 0.2-0.6 mm - 60%) 32.0 cellulose ether 0.16 water rest

[0003] The disadvantages of this product are that this fabric is flammable and does not provide sufficient tensile and bending strength.

ESSENCE OF THE UTILITY MODEL

[0004] The claimed device makes it possible to solve a technical problem in terms of creating a new and effective flexible concrete sheet with improved strength characteristics.

[0005] The technical result is an increase in the tensile and bending strength of the fabric.

[0006] The claimed technical result is achieved by the design of a flexible concrete sheet made from three layers connected by a knitting-stitching method, wherein the upper and lower layers are made from a woven or non-woven material, and the middle layer is made from a cement mixture with an alumina cement content of at least 40 wt.%, wherein the middle layer contains reinforcement, and the stitching of the sheet is carried out in a zigzag pattern at equal intervals.

[0007] In one particular example of implementation, reinforcement is performed using threads or rovings.

[0008] In another particular example of implementation, the reinforcement is carried out using a lattice.

[0009] In another particular example of implementation, the threads or rovings are laid in the longitudinal and/or transverse direction.

[0010] In another particular example of implementation, threads or rovings pass through the middle layer at equally spaced points.

[0011] In another particular example of implementation, the threads or rovings are made from a material selected from the group: basalt fiber, silica fiber, polyethylene terephthalate (PET), polyester or polypropylene fibers (PP).

[0012] In another particular embodiment, the bottom layer additionally comprises a layer of silicone sealant or PVC plastisol.

[0013] In another particular example of implementation, the material of the bottom and top layers is selected from the group: basalt fiber, silica fiber, PET, PP, polyester, or combinations thereof.

BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 illustrates an example of the design of a flexible web with longitudinal reinforcement.

[0015] Fig. 2 illustrates an example of the design of a flexible web with longitudinal and transverse reinforcement.

[0016] Fig. 3 illustrates an example of zigzag stitching of layers. IMPLEMENTATION OF THE UTILITY MODEL

[0017] As shown in Fig. 1, the claimed flexible concrete sheet (10) is made of at least three layers, where the upper (1) and lower (3) layers are a textile woven or non-woven material, for example, of a roll type, between which a layer (2) of cement mixture is located, which subsequently hardens upon contact with water.

[0018] The middle layer (2) is made on the basis of alumina cement with the content of the latter being not less than 40 wt.%. The middle layer (2) also contains a reinforcing element (21) or a group of elements (21), which may be fibers, rovings or a mesh (geogrid).

[0019] An example of the composition of the mixture for forming the middle layer (2) can be the following composition in % ratio per 1 ton of mixture:

- alumina cement GC 40-60%,

- glass basalt fiber 3000 g,

- lithium carbonate 200 g.

[0020] Reinforcement can be performed either in one direction (longitudinal or transverse) or in two directions as shown in the example in Fig. 2.

[0021] The top (1) and bottom (3) layers are typically made from one type of material, such as basalt fiber, silica fiber, polyethylene terephthalate (PET), polyester or polypropylene fibers (PP), or combinations thereof.

[0022] Layers (1) and (3) are connected by a knitting-stitching method, in which the stitching of the fabric is carried out in a zigzag at equal intervals, as shown in Fig. 3. The middle layer (2) is penetrated by a minimum number of connections per 100 cm ² , the number of connections is preferably equal to 50 to 200 connections. The stitching of the layers is carried out in equally spaced sections, forming an ordered arrangement of connections.

[0023] The reinforcing elements (21) can also be made from various materials, such as basalt fiber, silica fiber, PET, polyester, or PP. Combinations of the above materials can also be used.

[0024] The choice of a specific type of material depends on the purpose of using the web (10), for example:

- surface protection on flare installations;

- fireproof partition in mines;

- arrangement of ventilation chambers;

- creation of a fire-resistant anti-filtration layer for waterproofing fire-hazardous tanks (reserve tank cage).

[0025] The web (10) can be made completely non-flammable if materials based on silica and/or basalt fiber are used.

[0026] Additionally, a layer of non-flammable silicone sealant may be applied to the bottom layer, which, after drying in an oven, forms a waterproofing coating. When using the sheet (10) on objects requiring "absolute waterproofing," a polyethylene geomembrane is bonded to the bottom layer. A layer of PVC plastisol may also be applied to the bottom layer (3) for this purpose. In another specific embodiment, a PVC or PE membrane may be bonded to the bottom layer (3).

[0027] Table 1 provides an example of the characteristics of the manufactured product.

[0028] The claimed solution allows it to be effectively used to solve the following problems:

- surface protection on flare installations;

- fireproof partition in mines;

- arrangement of ventilation chambers;

- creation of a fire-resistant anti-filtration layer for waterproofing fire-hazardous tanks (reserve tank cage).

[0029] The stated solution may also be applied:

- to create a shelter by placing fabric on a frame;

- for the construction of formwork for the construction of a concrete foundation;

- for the construction of barriers, for example for laying tunnels;

- for repair or reinforcement of structures, such as roofs;

- for the production of floors or waterproofing structures;

- to strengthen soil structures, such as river banks and unstable slopes;

- to provide protection against floods;

- for repairing existing pipes, including buried water pipes, or for constructing new pipes;

- for fire-resistant elements of new or existing structures, for example in the form of fire-resistant covers or linings of chimneys;

- to form a hard surface that reduces harmful dust and contains spilled fuel for aircraft, such as helicopter landing pads and runways;

- to strengthen sandbag structures and protect them from damage by atmospheric factors such as wind and ultraviolet radiation;

- to strengthen earthworks and prevent the leaching of chemical impurities, for example, when backfilling soil or during secondary fuel localization work;

- to create a watertight lining for a water container such as a pond, a canal support and a reservoir or settling tanks, or septic tanks;

- for the formation of permanent awnings or roof structures;

- to strengthen drainage canals;

- to ensure a waterproof outer surface of buildings;

- to form an integral part of wear-resistant gabion structures;

- to repair and/or strengthen gabion structures and protect them from damage by atmospheric factors such as wind and ultraviolet radiation.

Claims (6)

1. A flexible concrete sheet made of three layers joined by a knitting and stitching method, wherein the upper and lower layers are made of woven or non-woven material, and the middle layer is made of a cement mixture with an alumina cement content of 60% by weight, wherein the middle layer contains roving reinforcement, and the stitching of the sheet is carried out in a zigzag pattern at equal intervals. 2. The fabric according to item 1, in which the threads or rovings are laid in the longitudinal and/or transverse direction. 3. The fabric according to claim 1, in which the threads or rovings pass through the middle layer at equally spaced points. 4. The fabric according to claim 1, wherein the threads or rovings are made of a material selected from the group: basalt fiber, silica fiber, polyethylene terephthalate (PET), polyester or polypropylene fibers (PP). 5. The fabric according to claim 1, wherein the bottom layer additionally contains a layer of silicone sealant or PVC plastisol. 6. The fabric according to item 1, in which the material of the lower and upper layers is selected from the group: basalt fiber, silica fiber, PET, PP, polyester or combinations thereof.