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Plane grid rib for structure reinforcement, mould and manufacturing method of plane grid rib

A manufacturing method and technology of grid bars, which are applied to structural elements, bridge reinforcement, building components, etc., can solve the problems of gaps in the composite material layer, irregular interfaces, and irregular cross-sections, and achieve stable mechanical properties without difficulty. Cracked, uniform cross-section effect

Active Publication Date: 2013-07-24
江苏绿材谷新材料科技发展有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the commonly used composite material grid bars have shortcomings such as irregular cross-section, protruding nodes, or gaps in the composite material bars around the nodes, which urgently need to be improved.
[0009] At present, the steel grid bars are directly welded with vertical and horizontal steel bars or bound with thin steel wires. The nodes are prominent, and the connection at the nodes is not firm, and it is easy to peel off and break.
The preparation method of FRP composite bars is basically binding, and there are also disadvantages such as protruding nodes, easy peeling and breaking at nodes, etc.
At present, there are also no-node FRP grid reinforcement products, but the preparation method is manual preparation, and there are defects such as irregular interfaces and gaps in the composite material around the nodes, which lead to easy cracking at the nodes and poor mechanical properties of longitudinal and transverse reinforcement. Defects such as stability

Method used

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  • Plane grid rib for structure reinforcement, mould and manufacturing method of plane grid rib
  • Plane grid rib for structure reinforcement, mould and manufacturing method of plane grid rib
  • Plane grid rib for structure reinforcement, mould and manufacturing method of plane grid rib

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preparation example Construction

[0054] The preparation method of the present invention is characterized in that compression molding is adopted, and diamond-shaped fine grid patterns are engraved on the surfaces of the female mold 5 and the male mold 4, so that corresponding patterns are formed on the upper and lower surfaces of the plane grid ribs, and the plane surface can be enhanced during use. The combination of grid bars and concrete or other materials, and the process has high production efficiency, high and stable product quality, neat and beautiful appearance.

[0055] The planar grid reinforcement prepared by the invention has performance characteristics such as high fiber content, high tensile strength and high elastic modulus, and is suitable for strengthening bridges, tunnels, houses and other buildings.

Embodiment 1

[0058] Using the manufacturing method of the present invention, the planar grid reinforcement is manufactured. The fiber selects high-performance glass fiber fiber, and the resin selects vinyl resin. The high-performance glass fiber is impregnated with thermosetting resin, arranged vertically and horizontally along the mold, molded and heated. In the first step, the mass content of fibers is 80% and the mass content of resin is 20%. In the second step, the distance between adjacent grooves 501 is 50 mm. In the third step, lay 800Tex resin-impregnated fibers in the groove 501 of the female mold, apply a pressure of 200Kg, heat and solidify, and finally make planar grid ribs with an interval of 50mm and a thickness of 1mm.

[0059] According to the different thickness requirements of the product design, different numbers of resin-impregnated fibers are arranged in the groove 501 of the female mold, and planar grid bars with different thicknesses can be prepared according to th...

Embodiment 2

[0061] Using the manufacturing method of the present invention, the planar grid reinforcement is manufactured. The fiber is selected from basalt fiber, and the resin is selected from epoxy resin. The basalt fiber is soaked in thermosetting resin, arranged vertically and horizontally along the female mold 5, molded and heated. In the first step, the mass content of fibers is 80% and the mass content of resin is 20%. In the second step, the distance between adjacent grooves 501 is 100 mm. In the third step, lay 4800Tex resin-impregnated fibers in the groove 501 of the female mold, apply a pressure of 1000Kg, heat and solidify, and finally make planar grid ribs with an interval of 100mm and a thickness of 10mm.

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Abstract

The invention discloses a plane grid rib for structure reinforcement. The plane grid rib comprises longitudinal composite ribs and horizontal composite ribs, wherein the longitudinal composite ribs and the horizontal composite ribs are fixedly connected on a same plane to form a plane grid; and the cross sections of the longitudinal and horizontal composite ribs are rectangular. The invention also discloses a mould for manufacturing the plane grid. The mould comprises a male mould and a female mould, wherein the male mould is a first platform; the lower part of the first platform is provided with criss-cross convex ridges; the female mould is a second platform; the upper part of the second platform is provided with criss-cross grooves; and the grooves of the second platform are matched with the convex ridges of the first platform. The invention also discloses a manufacturing method of the plane grid rib. The method comprises the following steps of: 1, manufacturing fibrous composite materials; 2, distributing the fibrous composite materials; and 3, applying pressure to the fibrous composite materials to manufacture the plane grid rib. The plane grid rib disclosed by the invention has the advantages of regularity in section and high tensile strength and elastic modulus.

Description

technical field [0001] The invention belongs to the field of new materials for structural reinforcement in the fields of civil engineering, construction and transportation, and specifically relates to a plane grid reinforcement, a mold and a manufacturing method for structural reinforcement. Background technique [0002] Due to earthquakes, wars, material aging, increased loads, and structural damage, etc., the bearing capacity and durability of the main structural components of buildings such as houses, bridges, dams, and tunnels continue to lose, and even affect their safety. If the building cannot reach the expected service life, effective reinforcement measures must be taken to reinforce it. [0003] Sticking fiber cloth and using grid bars for reinforcement are emerging fiber reinforcement technologies. The comparison between the two has the following characteristics: [0004] The fiber cloth reinforcement method belongs to the "post-reinforcement" means, and it can on...

Claims

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Application Information

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IPC IPC(8): E04C5/07E04G23/02E01D22/00B29C33/00B29C70/34E01D101/40
Inventor 吴智深刘建勋吴智仁吴刚朱中国朱虹
Owner 江苏绿材谷新材料科技发展有限公司
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