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US20080141614A1 - Flexible fiber reinforced composite rebar - Google Patents

Flexible fiber reinforced composite rebar Download PDF

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Publication number
US20080141614A1
US20080141614A1 US11/955,637 US95563707A US2008141614A1 US 20080141614 A1 US20080141614 A1 US 20080141614A1 US 95563707 A US95563707 A US 95563707A US 2008141614 A1 US2008141614 A1 US 2008141614A1
Authority
US
United States
Prior art keywords
bar
set forth
fibers
cross sectional
rebar
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US11/955,637
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English (en)
Inventor
Brian J. Knouff
Alan Fatz
A. Dean Thompson
William P. Junk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US11/955,637 priority Critical patent/US20080141614A1/en
Priority to EP07862985A priority patent/EP2102434A4/fr
Priority to JP2009541413A priority patent/JP2010513751A/ja
Priority to CA002671371A priority patent/CA2671371A1/fr
Priority to AU2007334387A priority patent/AU2007334387A1/en
Priority to PCT/US2007/025711 priority patent/WO2008076400A2/fr
Publication of US20080141614A1 publication Critical patent/US20080141614A1/en
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/14—Twisting

Definitions

  • Concrete and other masonry or cementitious materials have high compressive strength but relatively low tensile strength.
  • the reinforcing members are usually comprised of a rigid rod or bar, such as a steel rod or bar.
  • Such reinforcing members are typically referred to as “rebar”.
  • steel and other metals are susceptible to oxidation.
  • such materials are quite rigid prior to use so that the placement of such reinforcing members can be difficult and time-intensive.
  • conventional metal rebar must be cut into pieces and joined in order to form a “criss-cross” or other desired pattern.
  • U.S. Pat. No. 6,048,598 to Bryan, III et al. discloses a twisted rope rebar having individual fibers bound to each other by a thermosetting resin.
  • U.S. Pat. No. 5,580,642 to Okamoto et al. discloses a reinforcing member comprised of reinforcing fibers and thermoplastic fibers.
  • U.S. Pat. Nos. 5,593,536 and 5,626,700 to Kaiser disclose an apparatus for forming reinforcing structural rebar including a combination of pultrusion and SMC (sheet molding compound).
  • the modified pultrusion produces a rebar having a core of thermoset resin reinforcing material and an outer sheet molding compound.
  • U.S. Pat. No. 5,077,113 to Kakihara et al. proposes an inner filament bundle layer spirally wound around a fiber-reinforced core, a plurality of intermediate filament bundles oriented axially along the core, and an outer filament bundle spirally wound around the core and the other bundles.
  • U.S. Pat. No. 4,620,401 to L'Esperance et al. proposes a fiber reinforced thermosetting resin core and a plurality of continuous fibers helically wound around the core and impregnated with the thermosetting resin.
  • the Jackson U.S. Pat. No. 2,425,883 discloses a rod or bar formed of fine glass fibers with a phenolic resin cured under heat.
  • the present invention provides an improved composite reinforcement bar or rebar structure.
  • the rebar structure is generally formed by continuous fibers embedded in a thermoplastic resin matrix to form a reinforcement bar.
  • the bar is flattened to achieve a cross sectional aspect ratio greater than one to one.
  • the bar is then twisted in a substantially helical manner.
  • the bar has a substantially elliptical cross sectional shape with a cross sectional aspect ratio of about two to one and a twist pitch of about 30 centimeters.
  • the matrix may be a thermoplastic resin such as polypropylene, and the fibers may be formed of glass.
  • the thermoplastic resin matrix allows the matrix to be softened by the application of heat to thereby bend or flex the bar to desired shapes. The capability of being conveniently bent is also aided by the cross sectional shape and aspect ratio and by the twist applied to the bar. Once bent to a desired shape, the bar is allowed to cool and re-harden to a substantially rigid state.
  • FIG. 1 is a diagrammatic view of a pultrusion process for forming the flexible fiber reinforced composite rebar of the present invention.
  • FIG. 2 is a fragmentary perspective view of a length of the flexible fiber reinforced composite rebar of the present invention.
  • FIG. 3 is a greatly enlarged cross sectional view of the rebar taken on line 3 - 3 of FIG. 2 .
  • the reference numeral 1 generally designates a flexible fiber reinforced composite reinforcement bar or rebar structure embodying the present invention.
  • the rebar structure 1 generally includes a plurality of reinforcement fibers 2 ( FIGS. 2 and 3 ) embedded within a thermoplastic resin matrix 3 .
  • the rebar structure 1 is twisted in a generally helical manner.
  • FIG. 1 diagrammatically illustrates system and process 10 for manufacturing the rebar structure 1 .
  • a creel arrangement 12 including a plurality of spools or bobbins 14 of pays out a plurality of continuous reinforcement fibers 2 into a set of fiber guides 16 .
  • the fibers 2 are provided in the form of “rovings” or twisted strands on the spools 14 .
  • the fibers 2 may be man made or artificial continuous filaments, such as carbon, glass, aramid, organic and/or metallic fiber.
  • the creel arrangement 12 provides the fibers with optimum pre-tension in order to maximize the impregnation of the polymer 3 into the fibers 2 .
  • the particular arrangement of the creel system 12 may vary depending upon the form of the reinforcement/roving 2 provided by the suppliers.
  • the fibers move through a guides 16 which might consist of guide pins and tensioners, depending upon the final size of the end product.
  • the guides 16 apart from guiding the path of the fibers 2 , helps increase the surface area of the within a matrix impregnation chamber 18 .
  • the illustrated process 10 includes a dryer 20 into which thermoplastic resin 3 is fed.
  • a heater component 22 heats the thermoplastic resin to a plastic state.
  • a screw “pump” 24 forces the heated resin into the impregnation chamber 18 .
  • the impregnation chamber 18 an important component of the process 10 , includes two parts.
  • a first part 26 the fibers 2 come into contact with the thermoplastic polymer 3 pumped into the impregnation chamber 18 .
  • the design of the chamber 18 enables creation of high shear zones for the thermoplastic polymer 3 that results in significant reduction of the viscosity thereof. This reduction of the viscosity tremendously improves the impregnation of the high viscous polymeric material 3 into the fibers 2 .
  • the impregnated fibers 2 are converged into a consolidated impregnated rebar 30 .
  • the consolidated rebar 30 is given its final shape while it is still hot.
  • the cooler system 32 Once the rebar 30 with its final shape leaves the impregnation chamber 18 , it goes through a cooler system 32 .
  • the design of the cooler system depends upon the final form of the product.
  • the cooler system 32 might be in the form of a long tube with water sprinklers (not shown) attached along its length. The sprinklers would be used to spray water on the thermoplastic rebar 30 to cool its surface.
  • the impregnated rebar 30 next moves through the puller 36 .
  • the puller 36 pulls the impregnated rebar 30 though the entire device throughout the manufacturing process 10 .
  • the impregnated rebar enters a cutter station 38 , which cuts the final product to its required length.
  • thermoplastic rebar 30 consists of E-glass, or electrical grade glass, as the fiber reinforcement 2 and polypropylene as the thermoplastic matrix 3 .
  • the fiber volume ratio is approximately 45% of the total volume of the rebar 30 , a representative value for typical long fiber thermoplastic processes.
  • a thermoplastic rebar design optimization was performed using ABAQUSTM finite element analysis software (Dassault Systemes Societe Anonyme France, www.simulia.com).
  • An optimal profile for the rebar 30 was found to be an elliptical cross sectional shape having an aspect ratio of about 2:1, with specific dimensions varying for different rebar sizes.
  • the rebar 30 has a major axis of about 0.75 inch (19.05 mm) and a minor axis of about 0.375 inch (9.53 mm). It is foreseen that the rebar 30 could alternatively have other flattened shapes which are not specifically elliptical. Further, the optimal profile also includes a twist pitch of 30 centimeters (cm) or about one twist per 12 inches of rebar 30 . Alternatively, the twist pitch may fall within a range of about 6 to 24 inches (15.24 to 60.96 cm). An example profile is illustrated below in FIG. 2 , and additional highlights of the design optimization are described below.
  • thermoplastic matrix 3 was chosen over thermoset because a thermoplastic material has the potential for being bendable in the field.
  • One embodiment of the rebar structure incorporates a polypropylene resin as the thermoplastic matrix 3 .
  • other thermoplastic resins could be advantageously employed for use in some applications and environments.
  • Bending the rebar 30 may require onsite heating, which will reduce the stresses resulting from the applied bending force.
  • the heating is preferably not of a temperature which would actually melt the thermoplastic material 3 , but only to temporarily soften the rebar 30 for bending.
  • the heating temperature may range from about 150 to 200F (65.6 to 93.3° C.).
  • a rebar structure 1 having an elliptical cross-section with bends along the major axis appears to meet the demands of being bendable in the field.
  • the elliptical shape minimizes transverse stress, while twists allow ease of bending without having to align the rebar.
  • the twist pitch represents the resolution of bend length; that is, if the pitch is 30 cm, the rebar can only be bent every 30 cm. It was determined that increasing the twists in the rebar 30 (that is, decreasing the twist pitch) increases stress and strain values. Of the many twist pitches considered during analysis, the profile which showed the least longitudinal stress was the pitch 30 cm. Further, rebar was found to be optimally bendable in the horizontal to normal plane of the cross section, that is, about the major axis.
  • thermoplastic rebar structure 1 meeting the criteria of bendability in the field yet not requiring alignment included a polypropylene matrix 3 with E-glass fibers 2 at a 45% fiber volume ratio, a substantially elliptical profile with an aspect ratio of about 2:1, and a twist pitch of about 30 centimeters.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Reinforced Plastic Materials (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Laminated Bodies (AREA)
US11/955,637 2006-12-14 2007-12-13 Flexible fiber reinforced composite rebar Abandoned US20080141614A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US11/955,637 US20080141614A1 (en) 2006-12-14 2007-12-13 Flexible fiber reinforced composite rebar
EP07862985A EP2102434A4 (fr) 2006-12-14 2007-12-14 Barre nervurée composite renforcée de fibres flexible
JP2009541413A JP2010513751A (ja) 2006-12-14 2007-12-14 曲げることのできる繊維強化複合材の鉄筋
CA002671371A CA2671371A1 (fr) 2006-12-14 2007-12-14 Barre nervuree composite renforcee de fibres flexible
AU2007334387A AU2007334387A1 (en) 2006-12-14 2007-12-14 Flexible fiber reinforced composite rebar
PCT/US2007/025711 WO2008076400A2 (fr) 2006-12-14 2007-12-14 Barre nervurée composite renforcée de fibres flexible

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US87482806P 2006-12-14 2006-12-14
US11/955,637 US20080141614A1 (en) 2006-12-14 2007-12-13 Flexible fiber reinforced composite rebar

Publications (1)

Publication Number Publication Date
US20080141614A1 true US20080141614A1 (en) 2008-06-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
US11/955,637 Abandoned US20080141614A1 (en) 2006-12-14 2007-12-13 Flexible fiber reinforced composite rebar

Country Status (6)

Country Link
US (1) US20080141614A1 (fr)
EP (1) EP2102434A4 (fr)
JP (1) JP2010513751A (fr)
AU (1) AU2007334387A1 (fr)
CA (1) CA2671371A1 (fr)
WO (1) WO2008076400A2 (fr)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012098053A1 (fr) * 2011-01-17 2012-07-26 Sgl Carbon Se Élément de support destiné à être logé dans une bande de support de charge et de traction
WO2013006964A1 (fr) * 2011-07-14 2013-01-17 Pultrall Inc. Tige courbée de renforcement ayant une résistance mécanique améliorée à l'endroit de sa courbure et méthode pour produire celle-ci
US8921692B2 (en) 2011-04-12 2014-12-30 Ticona Llc Umbilical for use in subsea applications
US9012781B2 (en) 2011-04-12 2015-04-21 Southwire Company, Llc Electrical transmission cables with composite cores
US9233486B2 (en) 2011-04-29 2016-01-12 Ticona Llc Die and method for impregnating fiber rovings
US9278472B2 (en) 2011-04-29 2016-03-08 Ticona Llc Impregnation section with upstream surface for impregnating fiber rovings
US9283708B2 (en) 2011-12-09 2016-03-15 Ticona Llc Impregnation section for impregnating fiber rovings
US9289936B2 (en) 2011-12-09 2016-03-22 Ticona Llc Impregnation section of die for impregnating fiber rovings
DK201500202A1 (da) * 2015-03-31 2016-04-18 Fiberline Composites As Halvfabrikat og konstruktionselement lavet ud fra samme
US9321073B2 (en) 2011-12-09 2016-04-26 Ticona Llc Impregnation section of die for impregnating fiber rovings
US9346222B2 (en) 2011-04-12 2016-05-24 Ticona Llc Die and method for impregnating fiber rovings
DE102015100386A1 (de) * 2015-01-13 2016-07-14 Technische Universität Dresden Bewehrungsstab aus Filamentverbund und Verfahren zu dessen Herstellung
US9410644B2 (en) 2012-06-15 2016-08-09 Ticona Llc Subsea pipe section with reinforcement layer
US9409355B2 (en) 2011-12-09 2016-08-09 Ticona Llc System and method for impregnating fiber rovings
US9623437B2 (en) 2011-04-29 2017-04-18 Ticona Llc Die with flow diffusing gate passage and method for impregnating same fiber rovings
US9624350B2 (en) 2011-12-09 2017-04-18 Ticona Llc Asymmetric fiber reinforced polymer tape
US9685257B2 (en) 2011-04-12 2017-06-20 Southwire Company, Llc Electrical transmission cables with composite cores
US9885181B2 (en) 2012-03-23 2018-02-06 Pultrall Inc. Bent reinforcement rod having improved mechanical strength at the bending point thereof, and method for producing same
US10036165B1 (en) * 2015-03-12 2018-07-31 Global Energy Sciences, Llc Continuous glass fiber reinforcement for concrete containment cages
US20180291738A1 (en) * 2017-03-06 2018-10-11 Minova International Limited Oval bar
DE102017107948A1 (de) * 2017-04-12 2018-10-18 Technische Universität Dresden Bewehrungsstab zum Einbringen in eine Betonmatrix sowie dessen Herstellungsverfahren, ein Bewehrungssystem aus mehreren Bewehrungsstäben sowie ein Betonbauteil
WO2019042895A1 (fr) 2017-09-01 2019-03-07 Groz-Beckert Kommanditgesellschaft Procédé et dispositif de cintrage pour le cintrage d'une barre en matériau composite
US10336016B2 (en) 2011-07-22 2019-07-02 Ticona Llc Extruder and method for producing high fiber density resin structures
US10676845B2 (en) 2011-04-12 2020-06-09 Ticona Llc Continuous fiber reinforced thermoplastic rod and pultrusion method for its manufacture
CN113370559A (zh) * 2020-07-22 2021-09-10 江苏易鼎复合技术有限公司 一种自承压连续线性的树脂基纤维增强预浸料
US11118292B2 (en) 2011-04-12 2021-09-14 Ticona Llc Impregnation section of die and method for impregnating fiber rovings
RU2771972C2 (ru) * 2017-09-01 2022-05-16 Золидиан ГмбХ Способ гибки и гибочное устройство для гибки композитного стержня
US11555310B2 (en) 2018-11-19 2023-01-17 Owens Corning Intellectual Capital, Llc Composite rebar
DE102023203726A1 (de) * 2023-04-24 2024-10-24 Sgl Carbon Se Bewehrungseinheit

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DE102017219774B4 (de) 2017-11-07 2024-11-14 Leichtbau-Zentrum Sachsen Gmbh Verfahren und Anlage zur Herstellung von Faser-Matrix-Verbund-Profilen mit axial rotierendem Querschnitt und einstellbarer Faserorientierung, sowie Verwendung eines entsprechenden Verfahrens und einer Anlage
JP2023062721A (ja) * 2021-10-22 2023-05-09 学校法人金沢工業大学 コンクリート補強用複合材料およびコンクリート補強筋

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US2425883A (en) * 1941-08-08 1947-08-19 John G Jackson Concrete structural element reinforced with glass filaments
US4376834A (en) * 1981-10-14 1983-03-15 The Upjohn Company Polyurethane prepared by reaction of an organic polyisocyanate, a chain extender and an isocyanate-reactive material of m.w. 500-20,000 characterized by the use of only 2-25 percent by weight of the latter material
US4620401A (en) * 1985-04-26 1986-11-04 Societe Nationale De L'amiante Structural rod for reinforcing concrete material
US5077113A (en) * 1989-09-14 1991-12-31 Teijin Limited Filament-reinforced resinous structural rod
US5580642A (en) * 1992-03-25 1996-12-03 Mitsui Kensetsu Kabushiki Kaisha Reinforcing member for civil and architectural structures
US5593536A (en) * 1994-06-28 1997-01-14 Marshall Industries Composites Apparatus for forming reinforcing structural rebar
US5727357A (en) * 1996-05-22 1998-03-17 Owens-Corning Fiberglas Technology, Inc. Composite reinforcement
US5891560A (en) * 1997-07-02 1999-04-06 The Dow Chemical Company Fiber-reinforced composite and method of making same
US6048598A (en) * 1997-12-17 2000-04-11 Balaba Concrete Supply, Inc. Composite reinforcing member
US6612085B2 (en) * 2000-01-13 2003-09-02 Dow Global Technologies Inc. Reinforcing bars for concrete structures
US20040065044A1 (en) * 2001-02-21 2004-04-08 Alexander Bleibler Reinforcing bar and method for the production thereof

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GB611492A (en) * 1946-05-02 1948-10-29 John Lloyd Bannister Improvements in reinforcing bars
FR1068604A (fr) * 1949-12-10 1954-06-29 Armature pour béton
US5650220A (en) * 1995-05-26 1997-07-22 Owens-Corning Fiberglas Technology, Inc. Formable reinforcing bar and method for making same

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US2425883A (en) * 1941-08-08 1947-08-19 John G Jackson Concrete structural element reinforced with glass filaments
US4376834A (en) * 1981-10-14 1983-03-15 The Upjohn Company Polyurethane prepared by reaction of an organic polyisocyanate, a chain extender and an isocyanate-reactive material of m.w. 500-20,000 characterized by the use of only 2-25 percent by weight of the latter material
US4620401A (en) * 1985-04-26 1986-11-04 Societe Nationale De L'amiante Structural rod for reinforcing concrete material
US5077113A (en) * 1989-09-14 1991-12-31 Teijin Limited Filament-reinforced resinous structural rod
US5580642A (en) * 1992-03-25 1996-12-03 Mitsui Kensetsu Kabushiki Kaisha Reinforcing member for civil and architectural structures
US5593536A (en) * 1994-06-28 1997-01-14 Marshall Industries Composites Apparatus for forming reinforcing structural rebar
US5626700A (en) * 1994-06-28 1997-05-06 Marshall Industries Composites Method for forming reinforcing structural rebar by pultruding a core and molding thereover
US5727357A (en) * 1996-05-22 1998-03-17 Owens-Corning Fiberglas Technology, Inc. Composite reinforcement
US5891560A (en) * 1997-07-02 1999-04-06 The Dow Chemical Company Fiber-reinforced composite and method of making same
US6048598A (en) * 1997-12-17 2000-04-11 Balaba Concrete Supply, Inc. Composite reinforcing member
US6612085B2 (en) * 2000-01-13 2003-09-02 Dow Global Technologies Inc. Reinforcing bars for concrete structures
US20040065044A1 (en) * 2001-02-21 2004-04-08 Alexander Bleibler Reinforcing bar and method for the production thereof

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012098053A1 (fr) * 2011-01-17 2012-07-26 Sgl Carbon Se Élément de support destiné à être logé dans une bande de support de charge et de traction
US11118292B2 (en) 2011-04-12 2021-09-14 Ticona Llc Impregnation section of die and method for impregnating fiber rovings
US9346222B2 (en) 2011-04-12 2016-05-24 Ticona Llc Die and method for impregnating fiber rovings
US9012781B2 (en) 2011-04-12 2015-04-21 Southwire Company, Llc Electrical transmission cables with composite cores
US9190184B2 (en) 2011-04-12 2015-11-17 Ticona Llc Composite core for electrical transmission cables
US10676845B2 (en) 2011-04-12 2020-06-09 Ticona Llc Continuous fiber reinforced thermoplastic rod and pultrusion method for its manufacture
US9443635B2 (en) 2011-04-12 2016-09-13 Southwire Company, Llc Electrical transmission cables with composite cores
US8921692B2 (en) 2011-04-12 2014-12-30 Ticona Llc Umbilical for use in subsea applications
US9659680B2 (en) 2011-04-12 2017-05-23 Ticona Llc Composite core for electrical transmission cables
US9685257B2 (en) 2011-04-12 2017-06-20 Southwire Company, Llc Electrical transmission cables with composite cores
US9233486B2 (en) 2011-04-29 2016-01-12 Ticona Llc Die and method for impregnating fiber rovings
US9623437B2 (en) 2011-04-29 2017-04-18 Ticona Llc Die with flow diffusing gate passage and method for impregnating same fiber rovings
US9757874B2 (en) 2011-04-29 2017-09-12 Ticona Llc Die and method for impregnating fiber rovings
US9278472B2 (en) 2011-04-29 2016-03-08 Ticona Llc Impregnation section with upstream surface for impregnating fiber rovings
US9522483B2 (en) 2011-04-29 2016-12-20 Ticona Llc Methods for impregnating fiber rovings with polymer resin
WO2013006964A1 (fr) * 2011-07-14 2013-01-17 Pultrall Inc. Tige courbée de renforcement ayant une résistance mécanique améliorée à l'endroit de sa courbure et méthode pour produire celle-ci
US10336016B2 (en) 2011-07-22 2019-07-02 Ticona Llc Extruder and method for producing high fiber density resin structures
US9624350B2 (en) 2011-12-09 2017-04-18 Ticona Llc Asymmetric fiber reinforced polymer tape
US9409355B2 (en) 2011-12-09 2016-08-09 Ticona Llc System and method for impregnating fiber rovings
US9321073B2 (en) 2011-12-09 2016-04-26 Ticona Llc Impregnation section of die for impregnating fiber rovings
US10022919B2 (en) 2011-12-09 2018-07-17 Ticona Llc Method for impregnating fiber rovings
US9289936B2 (en) 2011-12-09 2016-03-22 Ticona Llc Impregnation section of die for impregnating fiber rovings
US9283708B2 (en) 2011-12-09 2016-03-15 Ticona Llc Impregnation section for impregnating fiber rovings
US9885181B2 (en) 2012-03-23 2018-02-06 Pultrall Inc. Bent reinforcement rod having improved mechanical strength at the bending point thereof, and method for producing same
US9410644B2 (en) 2012-06-15 2016-08-09 Ticona Llc Subsea pipe section with reinforcement layer
DE102015100386A1 (de) * 2015-01-13 2016-07-14 Technische Universität Dresden Bewehrungsstab aus Filamentverbund und Verfahren zu dessen Herstellung
US10036165B1 (en) * 2015-03-12 2018-07-31 Global Energy Sciences, Llc Continuous glass fiber reinforcement for concrete containment cages
DK201500202A1 (da) * 2015-03-31 2016-04-18 Fiberline Composites As Halvfabrikat og konstruktionselement lavet ud fra samme
US10480320B2 (en) * 2017-03-06 2019-11-19 Minova International Limited Oval bar
US20180291738A1 (en) * 2017-03-06 2018-10-11 Minova International Limited Oval bar
DE102017107948A1 (de) * 2017-04-12 2018-10-18 Technische Universität Dresden Bewehrungsstab zum Einbringen in eine Betonmatrix sowie dessen Herstellungsverfahren, ein Bewehrungssystem aus mehreren Bewehrungsstäben sowie ein Betonbauteil
DE102017120143A1 (de) 2017-09-01 2019-03-07 Groz-Beckert Kg Biegeverfahren und Biegevorrichtung zum Biegen eines Verbundwerkstoffstabes
WO2019042895A1 (fr) 2017-09-01 2019-03-07 Groz-Beckert Kommanditgesellschaft Procédé et dispositif de cintrage pour le cintrage d'une barre en matériau composite
US20200189174A1 (en) * 2017-09-01 2020-06-18 Solidian Gmbh Bending Method and Bending Device for Bending a Composite Bar
RU2771972C2 (ru) * 2017-09-01 2022-05-16 Золидиан ГмбХ Способ гибки и гибочное устройство для гибки композитного стержня
US11724437B2 (en) * 2017-09-01 2023-08-15 Solidian Gmbh Bending method for bending a composite bar
US11555310B2 (en) 2018-11-19 2023-01-17 Owens Corning Intellectual Capital, Llc Composite rebar
CN113370559A (zh) * 2020-07-22 2021-09-10 江苏易鼎复合技术有限公司 一种自承压连续线性的树脂基纤维增强预浸料
DE102023203726A1 (de) * 2023-04-24 2024-10-24 Sgl Carbon Se Bewehrungseinheit

Also Published As

Publication number Publication date
AU2007334387A1 (en) 2008-06-26
CA2671371A1 (fr) 2008-06-26
WO2008076400A2 (fr) 2008-06-26
JP2010513751A (ja) 2010-04-30
EP2102434A4 (fr) 2009-11-25
WO2008076400A3 (fr) 2008-10-09
EP2102434A2 (fr) 2009-09-23

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