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Fiber wall with strong rib material of plastic

A fiber reinforced plastic and fiber plastic technology, applied in the direction of building reinforcements, structural elements, building components, etc., can solve the problems of falling off, reducing the service life of reinforced concrete components, and reducing the grip between FRP reinforcement and concrete.

Inactive Publication Date: 2007-02-21
SINOMA SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under a certain load, the sand particles tend to fall off from the bonding interface with the FRP reinforcement, which leads to a decrease in the grip force between the FRP reinforcement and the concrete, and unexpected damage to the bond between the sand particles and the reinforcement, thus Significantly reduces the service life of reinforced concrete elements

Method used

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  • Fiber wall with strong rib material of plastic
  • Fiber wall with strong rib material of plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: Preparation of a φ9.5 FRP bar

[0014] The fiber of the core layer 1 adopts 1200TEX alkali-free glass fiber roving, the fiber of cladding 2 adopts 1200TEX alkali-free glass fiber bulked yarn, and the matrix resin adopts epoxy vinyl ester resin. Through dedicated equipment (see figure 2 ) And its pultrusion-winding one-step forming process to prepare the FRP bar. The manufacturing process is as follows:

[0015] 1. Arrange the fiber yarn of the core layer 1 and the bulky yarn group of the cladding 2 on the creel 6;

[0016] 2. The yarns are respectively drawn from the creel 6 to the yarn collector 5, and the bulky yarns of the cladding 2 are arranged around the fiber yarns of the core 1;

[0017] 3. Under the action of the tractor 7, the fiber yarn of the core layer 1 and the bulked yarn of the cladding 2 enter the dipping tank 8 for dipping;

[0018] 4. After dipping, the fiber yarn of the core layer 1 and the bulky yarn of the cladding 2 are led to the preformin...

Embodiment 2

[0021] Example 2: Manufacturing a φ12.7FRP bar

[0022] The fibers of the core layer 1 in this embodiment use 1200TEX alkali-free glass fiber non-twisted roving and 800TEX carbon fiber yarn, and the volume ratio of the alkali-free glass fiber non-twisted roving and carbon fiber yarn is 2:1. The fiber of the cladding 2 adopts 1200TEX high-strength glass fiber bulked yarn, and the matrix resin adopts unsaturated polyester resin. The FRP reinforcement is prepared by the pultrusion-winding one-step forming process and its special equipment. The manufacturing process is the same as the above, the difference is:

[0023] The central core hole 9 of the preforming mold 3 has a diameter of φ9.0. The diameter of the central core hole 9 can be controlled. The fiber volume content of the core layer is about 70%. The central hole 10 of the other preforming mold 4 has a diameter of φ12.7. The diameter of the central hole 10 of the preforming mold can be controlled. The cladding fiber volume con...

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Abstract

The present invention provides a fibre reinforced plastics rib material. It includes fibre reinforced plastics (FRP) core layer and matrix resin impregnating fibre reinforced plastics (FRP), the peripheral surface of said core layer is axially covered with glass fibre bulk yarn reinforced plastics covering layer. Said glass fibre bulk yarn reinforced plastics covering layer can effectively increase roughness of exterior surface of the fibre reinforced plastics rib material core layer, so that the bond stress of said rib material core layer and concrete also can be raised, and the service lift of concrete member also can be raised.

Description

Technical field [0001] Fiber reinforced plastic (hereinafter referred to as FRP) reinforcement is an improvement of the original FRP reinforcement. Background technique [0002] The traditional FRP reinforcement is made of fiber roving as the core layer, impregnated with matrix resin and then pultruded. It has the advantages of light weight, high strength, corrosion resistance, low electrical conductivity, designability, and linear expansion coefficient similar to concrete. In recent years, it has gradually replaced steel bars to reinforce concrete and is widely used in buildings in harsh environments, such as marine engineering. Structures, parking lots and bridges using antifreeze, etc. In these projects, the bonding performance of FRP bars and concrete, or the bond strength with concrete, has attracted much attention as an important concrete structure design parameter. Therefore, in order to improve the binding force between FRP reinforcements and concrete, a layer of sand is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C5/02
Inventor 赵谦黄建洧戴方毕夏涛王南杨中平李若谷
Owner SINOMA SCI & TECH
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