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Reinforcement bar and method for manufacturing same

A technology of reinforcing strips and fibers, used in building reinforcements, building construction, transportation and packaging, etc., can solve the problems of negative effects of concrete dehydration and curing process, difficult mixing of water absorption tendency, clogging and other problems

Active Publication Date: 2013-06-26
REFORCETECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Further, during mixing and pouring, conventional steel fibers have a tendency to roll into balls, causing clogging, and are also difficult to mix due to water absorption tendencies, thereby negatively affecting the dehydration and curing process of the poured concrete

Method used

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  • Reinforcement bar and method for manufacturing same
  • Reinforcement bar and method for manufacturing same
  • Reinforcement bar and method for manufacturing same

Examples

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Embodiment Construction

[0105] figure 1 Schematically shows a MiniBar according to the present invention TM 10 view of the first embodiment. MiniBar TM 10 comprises a plurality of parallel fibers 11 of basalt, glass fibers or carbon embedded in a cured matrix of conventional type resistant to alkaline corrosion. Such a matrix may be, for example, thermoplastic, vinyl ester (VE) or epoxy. An elastic or non-elastic strand 12 is continuously wound around the elongated embedded fibers, and tension is applied to the strand 12 to partially deform the circumferential surface of the strip 10, creating an elongated helically arranged indentation 14. This winding operation is preferably carried out simultaneously with or after the embedding of the elongated fibers 11 in the matrix, but before the final curing step, so as to ensure the desired deformation of the circumferential surface of the strip 10 . Further, MiniBar TM 10 The elongated rope or strip can be made in a continuous process, whereupon the c...

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Abstract

The invention relates to reinforcement bars for concrete structures, comprising a large number of continuous, parallel fibers, preferably made of basalt, carbon, glass fiber, or the like, embedded in a cured matrix, the bars preferably having an average length of 20 mm to 200 mm, and an average diameter of 2 mm to 10 mm, each bar being made of at least one fiber bundles comprising a number of parallel, preferably straight fibers having a cylindrical cross section and said bars being provided with a surface shape and / or texture which contributes to good bonding with the concrete. At least a part of the surface of each bar being deformed prior to or during the curing stage of the matrix by means of: a) one or more strings of an elastic or inelastic, but tensioned material being helically wound around said at least one bundle of parallel, straight fibers prior to curing of the matrix in which the fibers are embedded, maintaining the fibers in an parallel state during curing and providing an uneven external surface in a longitudinal direction of the reinforcement bars, and / or b) at least one deformed section and / or at least one end of each reinforcement bar; thereby producing a roughened surface. The invention also relates to a method for manufacturing reinforcement bars and for use of such short fibers.

Description

technical field [0001] The invention relates to reinforcing elements for use in connection with structures to be cast, such as concrete structures. [0002] More specifically, the present invention relates to reinforcing strips for concrete structures and methods of making such strips. The strip comprises a plurality of continuous parallel fibers preferably composed of basalt fibres, carbon fibres, glass fibers or similar material embedded in a cured matrix slightly stretched to work together, the strip preferably having an average length of 20 to 200mm and an average diameter of 0.3 to 3 mm, each strip consists of at least one fiber bundle comprising a plurality of parallel, preferably straight fibers having a cylindrical or elliptical cross-section, and said strips are provided with a surface shape and / or texture. Background technique [0003] Plain concrete is strong in compression but very weak in tension, which results in low tensile strain failure. Therefore, it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/38C04B16/06C04B32/02E04C5/07
CPCC04B20/1029E04C5/07Y10T428/2936Y10T428/2918C04B20/0068E04C5/073C04B14/4668C04B14/386C04B14/42C04B28/02C04B2201/50B29C53/58
Inventor P·卡托·斯坦达伦纳德·W·米勒
Owner REFORCETECH LTD
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