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Carbon fiber reinforcement system

a technology of carbon fiber reinforcement and fiber reinforcement, which is applied in the direction of building repair, transportation and packaging, walls, etc., can solve the problem of limited space between fibers for propagation of micro-cracks formed between fibers, and achieve the effect of minimizing structural changes

Inactive Publication Date: 2007-09-18
WHEATLEY DONALD G +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0033]The mesh tape since air entrapment is not an issue allows a wide sheet to be used. The wider sheet minimizes the structural changes between the reinforced and un-reinforced transition in the structure.
[0034]The edges of the mesh tape can have wider fiber spacing to feather the stiffness of the tape so not to cause a large stress concentration at the junction of the reinforced structure to the un-reinforced structure.

Problems solved by technology

Moreover, propagation of micro-cracks formed between fibers is limited to the spaces between fibers and cannot propagate along the mesh tape.

Method used

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  • Carbon fiber reinforcement system
  • Carbon fiber reinforcement system
  • Carbon fiber reinforcement system

Examples

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Embodiment Construction

[0051]The following description of the preferred embodiment is merely exemplary in nature, and is in no way intended to limit the invention, or its application, or uses.

[0052]Referring now to the drawings, shown in FIG. 1 is an article, a carbon fiber strip assembly 10 (here after just strip 10) for use in reinforcing structure element 12, such as a concrete block wall, as seen in FIG. 3. In accordance with the teachings of the present invention, the strip 10 comprises a carbon fiber sheet 14 having a roughened surface 28 exposed or produced upon removal of a cover sheet 24.

[0053]To obtain the strip 10, a layer of carbon fiber 13 having a first surface 16 and a second surface 18, is provided. The first surface 16 and the second surface 18 of the carbon fiber 13 define a thickness 20. The fibers (not shown specifically in the drawings) of the carbon fiber 13 are generally axially oriented with respect to the strip 10 for good tensile strength as is well known.

[0054]Referring in parti...

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Abstract

An article and method for reinforcing structural members is provided. The article includes a carbon fiber material, preferably a carbon fiber mesh with a roughened surface defined by an epoxy resin. The article has lateral fibers woven into longitudinal carbon fibers that are in tension, creating a mesh. An epoxy resin is applied to the fiber mesh to form a rigidifiedrigified fiber mesh tape once the resin is cured. To obtain a roughened surface, a plastic sheet is removably attached to the surface of the fiber mesh. The plastic sheet is removed thereby exposing a roughened carbon fiber surface defined by the epoxy. An alternative tensile tape is also provided for reinforcing a wall structure.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation-in-part application of application Ser. No. 09 / 903,414, filed Jul. 11, 2001 which is a continuation-in-part application of application Ser. No. 09 / 736,853 filed on Dec. 13, 2000.BACKGROUND OF THE INVENTION[0002]This invention relates to a product for use in reinforcing structures and a method for attaching the product to the structure and in particular to reinforce concrete walls using carbon fiber material with epoxy adhered to the carbon fiber material. The invention further includes a rigidified mesh of carbon fiber material designed for adherence to a structural element.DESCRIPTION[0003]Walls constructed of concrete blocks are well known in the field of construction and have been extensively used for both above ground and basement walls. Such concrete walls constructed in this manner are generally capable of supporting residential and light commercial structures and are relatively inexpensive to manu...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B32B5/12B29C73/10E04G23/02
CPCB29C73/10E04G23/0203E04G23/0218E04G2023/0251E04G23/0214Y10T428/24322
Inventor WHEATLEY, DONALD G.WHEATLEY, DONALD E.
Owner WHEATLEY DONALD G
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