WO2000046460A1 - Fibre de renforcement pour beton a fibres d'acier - Google Patents

Fibre de renforcement pour beton a fibres d'acier Download PDF

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Publication number
WO2000046460A1
WO2000046460A1 PCT/EP1999/010343 EP9910343W WO0046460A1 WO 2000046460 A1 WO2000046460 A1 WO 2000046460A1 EP 9910343 W EP9910343 W EP 9910343W WO 0046460 A1 WO0046460 A1 WO 0046460A1
Authority
WO
WIPO (PCT)
Prior art keywords
section
fiber
reinforcing fiber
reinforcing
notches
Prior art date
Application number
PCT/EP1999/010343
Other languages
German (de)
English (en)
Inventor
Karl-Heinz Breuer
Original Assignee
Vulkan Harex Stahlfasertechnik Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vulkan Harex Stahlfasertechnik Gmbh & Co. Kg filed Critical Vulkan Harex Stahlfasertechnik Gmbh & Co. Kg
Publication of WO2000046460A1 publication Critical patent/WO2000046460A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/012—Discrete reinforcing elements, e.g. fibres

Definitions

  • the present invention relates to a reinforcement fiber for reinforcing steel fiber reinforced concrete, made of steel wire with a round cross-section, which has a substantially straight center section, to which end anchors are connected at both ends in the form of shorter, bent end sections and which are at least partially corrugated with transverse to Notches extending longitudinally is provided.
  • steel wire fibers are known in a variety of embodiments for reinforcing fiber concrete.
  • the spatial reinforcement is carried out simply by adding the fibers to the concrete, which remains workable as usual.
  • the properties of the concrete ceiling with regard to bending tensile strength, impact strength and the like are influenced equally by the addition quantity - and - in particular by the physical and geometric properties of the steel fibers themselves. In the prior art, this has resulted in the fact that even in the area of wire fibers with a round cross-section a variety of embodiments exist, each of which is optimized with regard to certain properties.
  • a steel wire fiber according to the prior art is described for example in DE 92 07 598 U1.
  • This special embodiment has a straight central section with double bent end sections.
  • This fiber is first made from steel wire with a circular cross-section.
  • To increase the adhesion in the concrete gets to that between the End anchorages lying, essentially straight middle section a flattened shape.
  • an enlarged active surface is formed in the central region, which is known to be advantageous in particular with regard to the prevention of microcracking.
  • the bent end anchors ensure an improved long-range bond.
  • the invention proposes, starting from the prior art described at the outset, that only the central section has notches.
  • the straight central section has particularly advantageous properties with regard to the prevention of microcracking due to its structuring, the long-range bond is created by the end anchorages.
  • the stability of the kinked areas is in any case higher than in the prior art, since there are no indentations which could otherwise lead to weakening due to their notching effect when turning.
  • the particular advantage of the steel wire fiber designed according to the invention lies in an improved microscopic and macroscopic bond, which of course benefits the properties of the fiber concrete as a whole.
  • the notches are only on one side of the wire cross-section.
  • the corrugations, which follow one another axially along a surface line, on the one hand ensure sufficient reinforcing forces in the longitudinal direction of the wire and, on the other hand, due to the asymmetrical local wire cross-section for spatial fixation, which is also secured against rotation and shear.
  • the aforementioned embodiment is further optimized in that the notches are on the side of the wire cross-section to which the end anchorages are bent.
  • This version assumes that all bent end sections and the central section lie in a single plane, namely the fiber plane. It has been found that the corrugation according to the invention has an optimized adhesive effect at this point.
  • a preferred embodiment of the steel wire fiber according to the invention provides that the end anchorages have a first end section bent at an obtuse angle to the center section and a second end section adjoining it outwards and running parallel to the center section.
  • This form of a flat steel wire fiber is a particularly proven version, which has excellent static and dynamic properties due to the special shape of the end anchorages, which are further improved by the combination according to the invention with the corrugation in the middle area.
  • the notches are preferably V-shaped. Such a design is particularly suitable for preventing microcracks.
  • the dimensions of the steel wire fibers according to the invention are in a length range between 20 and 60 mm, the wire diameter being between 0.5 and 1.5 mm.
  • the fibers with a corrosion-protective coating, for example a zinc coating.
  • FIG. 1 An embodiment of a fiber according to the invention is shown in the drawing Figure 1. This shows a view of a fiber plane flat steel wire fiber, which is shown enlarged and is provided as a whole with the reference number 1.
  • the fiber 1 consists of steel wire with a circular cross section. It has a straight central section 2, which is joined by first end sections 3, which are bluntly bent on both sides. The associated, outwardly projecting second end sections 4 in turn run parallel to the central section 2.
  • the steel wire fiber 1 shown has the advantages already explained due to the notches 5 made on one side only in the central section 2.
  • a fiber 1 provides that, as is known, sections are cut to length from steel wire with a circular cross section, the end sections 3 and 4 being bent as shown with a stamping tool and notches 5 being made in the center section.
  • the turning and notching can be done in a single or in separate work steps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

Cette invention concerne une fibre de renforcement utilisée pour renforcer du béton à fibres d'acier. Elle consiste en un fil d'acier à section circulaire présentant une partie centrale (2), principalement rectiligne, aux extrémités de laquelle sont raccordées des parties d'ancrage (3, 4) plus petites et courbées. Au moins une partie de la partie centrale présente une striation avec des rainures (5) s'étendant transversalement à la longueur. Pour améliorer l'ancrage de telles fibres de renforcement dans du béton, il est proposé de ménager des encoches (5) uniquement sur la partie centrale (2).
PCT/EP1999/010343 1999-02-01 1999-12-23 Fibre de renforcement pour beton a fibres d'acier WO2000046460A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29901676U DE29901676U1 (de) 1999-02-01 1999-02-01 Bewehrungsfaser zur Bewehrung von Stahlfaserbeton
DE29901676.5 1999-02-01

Publications (1)

Publication Number Publication Date
WO2000046460A1 true WO2000046460A1 (fr) 2000-08-10

Family

ID=8068746

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/010343 WO2000046460A1 (fr) 1999-02-01 1999-12-23 Fibre de renforcement pour beton a fibres d'acier

Country Status (2)

Country Link
DE (1) DE29901676U1 (fr)
WO (1) WO2000046460A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1375773A2 (fr) * 2002-06-05 2004-01-02 Euro Business Corporation bvba Fibres métalliques pour l'utilisation dans le béton renforcé de fibres
CN103261542A (zh) * 2010-12-15 2013-08-21 贝卡尔特公司 用于强化混凝土或砂浆的、具有带有至少两个弯曲部的锚固端的钢纤维
CN112609900A (zh) * 2020-12-18 2021-04-06 武汉新途工程新材料科技有限公司 一种变截面多锚固段特种钢纤维结构
US20220098099A1 (en) * 2019-01-10 2022-03-31 The Regents Of The University Of Michigan Striated fiber-based concrete reinforcement

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20050074U1 (it) * 2005-11-28 2007-05-29 Fili & Forme Srl Manufatto per l'edilizia
ITVI20060093A1 (it) * 2006-03-31 2007-10-01 Matassina Srl Elemento di rinforzo per strutture in calcestruzzo ed elemento strutturale in calcestruzzo che utilizza tale elemento di rinforzo

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2103905A5 (fr) * 1970-08-04 1972-04-14 Thy Marcinelle Monceau
US4078940A (en) * 1972-11-28 1978-03-14 Australian Wire Industries Proprietary Limited Concrete reinforcing elements and reinforced composite incorporating same
DE8815120U1 (de) 1988-12-05 1989-03-30 Hermann Gloerfeld -Metallwaren- GmbH & Co. KG, 5860 Iserlohn Armierungsfaser aus Metall, insbesondere aus Stahldraht, zur Armierung von Beton, insbesondere von Spritzbeton
DE9006524U1 (de) 1990-06-09 1990-08-09 Hermann Gloerfeld GmbH & Co KG, 5860 Iserlohn Armierungsfaser aus Metall für die Bewehrung von Beton
DE9207598U1 (de) 1992-06-04 1992-08-27 ME Fasersysteme GmbH, 3201 Diekholzen Armierungsfaser aus Stahldraht
DE4242150A1 (de) * 1992-12-15 1994-06-16 Michael Dipl Ing Borttscheller Stahlfaser und Vorrichtung zu ihrer Herstellung
EP0608013A2 (fr) * 1993-01-21 1994-07-27 Robert Hugo Jacob Over Fibre de renforcement pour le renforcement du béton
EP0861948A1 (fr) * 1997-02-28 1998-09-02 N.V. Bekaert S.A. Fibre d'acier pour le renforcement de béton à haute performance

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2103905A5 (fr) * 1970-08-04 1972-04-14 Thy Marcinelle Monceau
US4078940A (en) * 1972-11-28 1978-03-14 Australian Wire Industries Proprietary Limited Concrete reinforcing elements and reinforced composite incorporating same
DE8815120U1 (de) 1988-12-05 1989-03-30 Hermann Gloerfeld -Metallwaren- GmbH & Co. KG, 5860 Iserlohn Armierungsfaser aus Metall, insbesondere aus Stahldraht, zur Armierung von Beton, insbesondere von Spritzbeton
DE9006524U1 (de) 1990-06-09 1990-08-09 Hermann Gloerfeld GmbH & Co KG, 5860 Iserlohn Armierungsfaser aus Metall für die Bewehrung von Beton
DE9207598U1 (de) 1992-06-04 1992-08-27 ME Fasersysteme GmbH, 3201 Diekholzen Armierungsfaser aus Stahldraht
DE4242150A1 (de) * 1992-12-15 1994-06-16 Michael Dipl Ing Borttscheller Stahlfaser und Vorrichtung zu ihrer Herstellung
EP0608013A2 (fr) * 1993-01-21 1994-07-27 Robert Hugo Jacob Over Fibre de renforcement pour le renforcement du béton
EP0861948A1 (fr) * 1997-02-28 1998-09-02 N.V. Bekaert S.A. Fibre d'acier pour le renforcement de béton à haute performance

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1375773A2 (fr) * 2002-06-05 2004-01-02 Euro Business Corporation bvba Fibres métalliques pour l'utilisation dans le béton renforcé de fibres
EP1375773A3 (fr) * 2002-06-05 2004-02-04 van Laer, Marcel Fibres métalliques pour l'utilisation dans le béton renforcé de fibres
CN103261542A (zh) * 2010-12-15 2013-08-21 贝卡尔特公司 用于强化混凝土或砂浆的、具有带有至少两个弯曲部的锚固端的钢纤维
US20220098099A1 (en) * 2019-01-10 2022-03-31 The Regents Of The University Of Michigan Striated fiber-based concrete reinforcement
EP3908560A4 (fr) * 2019-01-10 2022-09-28 The Regents of The University of Michigan Renforcement de béton à base de fibres striées
CN112609900A (zh) * 2020-12-18 2021-04-06 武汉新途工程新材料科技有限公司 一种变截面多锚固段特种钢纤维结构

Also Published As

Publication number Publication date
DE29901676U1 (de) 1999-08-12

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