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US20080302063A1 - Reinforcing rod - Google Patents

Reinforcing rod Download PDF

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Publication number
US20080302063A1
US20080302063A1 US12/135,351 US13535108A US2008302063A1 US 20080302063 A1 US20080302063 A1 US 20080302063A1 US 13535108 A US13535108 A US 13535108A US 2008302063 A1 US2008302063 A1 US 2008302063A1
Authority
US
United States
Prior art keywords
ribs
reinforcing rod
rib
different
material properties
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
US12/135,351
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English (en)
Inventor
Harald Braasch
Andre Weber
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.)
Schoeck Bauteile GmbH
Original Assignee
Schoeck Bauteile GmbH
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 Schoeck Bauteile GmbH filed Critical Schoeck Bauteile GmbH
Assigned to SCHOCK BAUTEILE GMBH reassignment SCHOCK BAUTEILE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BRAASCH, HARALD, WEBER, ANDRE
Publication of US20080302063A1 publication Critical patent/US20080302063A1/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
    • 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
    • E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
    • E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete

Definitions

  • the invention relates to a reinforcing rod made from fiber-reinforced plastic that is provided on its peripheral surface with profiling projecting outwardly in the radial direction in the form of ribs extending at least across one part of the periphery.
  • the following refers to ribs not only when these project outwardly starting from an inner casing surface with smaller diameter, but also when these—as in the case of notched threads—are made from a part of the rod casing surface and are constructed by recesses machined into this casing surface.
  • a thread geometry is defined, in which the concrete corbels, that is, the concrete located adjacent to the rod in the region between two adjacent ribs, fail up to a certain strength of the concrete between the ribs.
  • a disadvantage in this thread shape is that for a higher concrete strength, the ribs shear off completely and the remaining bond strength falls drastically. Because concrete continuously stiffens with increasing aging, this can also lead to abrupt failure of the reinforcement when a threshold is exceeded even after a long, undamaged time.
  • reinforcing rods made from fiber-reinforced plastic have a lower modulus of elasticity than steel and therefore wider cracks are to be expected in GFK-reinforced concrete constructions compared with steel concrete constructions with the same reinforcement content, currently reinforcing rods made from steel are also still used.
  • the present invention is based on the objective of making available a reinforcing rod made from fiber-reinforced plastic of the type noted above, which distinguishes itself through improved properties and which is suitable, in particular, for receiving higher loads.
  • a reinforcing rod made from fiber-reinforced plastic shall be provided, which avoids the disadvantage of conventional GFK reinforcing rods and in this way helps reduce, for example, the crack spacing and the crack width in the concrete surrounding the reinforcing rod.
  • advantageously instead of a few large gaping cracks in the concrete preferably several smaller cracks should be produced, which then create, in addition to a better visual impression, also improved ductility of the concrete component.
  • the reinforcing rod has ribs with different geometric and/or material properties.
  • an order system for different rib properties can be formed, in which the ribs of different orders can be distinguished with respect to geometric parameters such as rib width, rib spacing, rib depth, angle of the rib flanks, rib pitch, etc., or by variation of the fiberglass content, the fiber materials, the fiber orientations, etc., and can supplement their properties.
  • the ribs are constructed with different geometric and/or material properties in such a way that they have a different shear load on the rib base.
  • the mentioned order system of different rib properties advantageously leads to a differentiation with respect to the rib load-bearing capacities.
  • the properties of ribs of higher order are preferably selected so that the shear load on the rib base of ribs of higher order is greater than the shear load on the rib base of ribs of lower order.
  • the ribs are constructed with different geometric and/or material properties in such a way that, in the load case, they do not fail at the same time and/or under the same load, as is the case, for example, in known reinforcing rods from the state of the art (see, e.g., WO 95/13414) with two thread-shaped, opposite-sense, crossing ribs, which are arranged symmetric in the axial direction.
  • This configuration means symmetric shear loading and thus usually simultaneous failure. If failure at the same point in time and/or under the same load can be prevented, this increases the ductility of the reinforcing rod.
  • the ribs can be mutually supported or supplemented with different rib geometries and/or rib materials using means and methods according to the invention, they should be arranged at least in approximately the same axial section of the reinforcing rod—either bordering adjacent to each other in the axial direction or spaced apart from each other or mutually overlapping or superimposed.
  • a special advantage is given in that one can combine wide ribs of a first order with narrower ribs of a second or higher order in such a way that the narrower ribs are arranged on the wider ribs on their radial outer side. In this way it can be achieved that in the load case, initially the narrower ribs of second order are sheared off when the stress on the rib bases of these narrower ribs exceeds their shear strength.
  • the contact surface of the reinforcing rod in the region of the remaining wider ribs of first order with the concrete corbel surrounding the reinforcing rod is reduced and thus the load on the rib base of these wider ribs of first order is initially reduced.
  • the remaining ribs of first order can receive additional loads again until the shear stress also exceeds the shear strength on the rib base of the ribs of first order and leads to their being sheared off.
  • an “onion peel effect” is essentially produced: certain loads initially lead to damage to the “outer onion peel,” i.e., the narrower or outer ribs of higher order. These sheared ribs no longer contribute to the reinforcing rod being able to receive tensile stress in the concrete, but instead lie loosely between the reinforcing rod and concrete, wherein the stress is received by the remaining ribs (of lower order). If the load increases, then, when the associated threshold is exceeded, this leads to a failure of the ribs of the next lower order, etc. Finally, despite damaged, still present, loose “outer onion peels,” i.e., ribs of higher order, the bond of the concrete with the “innermost onion peel,” i.e., the ribs of first order still remains.
  • the ribs of different order can be arranged not only synchronously, for example, rotationally symmetric, thread-shaped, or running in opposite senses uniformly across the reinforcing rod, but instead they can also follow different arrangement patterns, for example, with opposite, different slopes up to a point-shaped distribution of the ribs of highest order, which can be formed, for example, by sanding (for positive ribs) or sandblasting (for negative ribs), which has the advantage of higher bond activation for small slip paths. In this way, however, defined properties in the sanded or sandblasted regions should be observed, in order to prevent undefined randomness and thus negative effects in the loaded state.
  • While a primary goal in the present invention is to provide a defined residual load-bearing capacity, in this state of the art, due to the stepped failure mode, larger relative displacements of the steel rod relative to the steel concrete component reinforced in this way are desired and allowed, so that the steel concrete component can also be dimensioned under use of local plastic deformation of the reinforcement.
  • rib geometry for a high-load rib can be provided, which can also be used for concrete with the highest strength and does not lead to rib failure of the reinforcement, but instead at most to a failure of the concrete corbel between the ribs. While ribs with lower strength guarantee a good bond in normal concrete, the high-strength ribs provide a minimum bond strength also for greatly aftercured concrete or overstrength concrete.
  • ribs of different order can be combined in a multiple step rib, which can feature discrete angle jumps or continuous changes in angle.
  • different rib properties are combined with each other, wherein, in turn, the ribs of higher order have a lower shear strength and fail earlier than the ribs of lower order.
  • the contact surface of the remaining sub-ribs with the concrete surrounding them, the so-called concrete corbel is reduced and thus the load on the rib base of these remaining sub-ribs is reduced.
  • these remaining sub-ribs can again receive additional loading until the shear stress on the rib base of then the smallest sub-rib is exceeded and leads to its shearing.
  • the basic profile of the reinforcing rod can also have an oval, rectangular, star-shaped, etc. cross section that is different from a circular shape.
  • the milling process can be a circular or oval, central or eccentric process.
  • FIGS. 1 a )- 1 g ) show a first embodiment of a reinforcing rod according to the invention
  • FIG. 1 g in perspective side view—in FIG. 1 g );
  • FIGS. 2 a ) and 2 b ) show a second embodiment of a reinforcing rod according to the invention in side view—in FIG. 2 a )—and in perspective side view—in FIG. 2 b );
  • FIGS. 3 a ) and 3 b ) show a third embodiment of a reinforcing rod according to the invention in side view—in FIG. 3 a )—and in perspective side view—in FIG. 3 b );
  • FIG. 4 is a partial vertical section view through a fourth embodiment of a reinforcing rod according to the invention.
  • FIG. 5 is a partial vertical section view through a fifth embodiment of a reinforcing rod according to the invention.
  • FIG. 6 is a partial vertical section view through a sixth embodiment of a reinforcing rod according to the invention.
  • FIG. 7 is a partial vertical section view through a seventh embodiment of a reinforcing rod according to the invention.
  • a reinforcing rod 1 is shown with two superimposed rib types.
  • the reinforcing rod 1 is made from a cylindrical basic shape with circular cross section, starting from which first recesses 2 and second recesses 3 extend inwardly in the radial direction, by which overlapping ribs 4 , 5 are formed.
  • the recesses 2 , 3 are arranged running in opposite senses relative to each other, that is, one recess has a right-handed course and the other recess has a left-handed course along the reinforcing rod in the shape of a thread around this rod.
  • the recesses 2 here have a deeper construction than the recesses 3 .
  • the recesses 2 leave ribs 4 therebetween (in fact, a thread-shaped, peripheral, continuous rib 4 ).
  • the recesses 3 leave recesses 5 therebetween which partially also overlap with the ribs 4 due to the mutual overlapping of the recesses.
  • FIG. 1 b the surface of the reinforcing rod according to the invention can be seen from the vertical section with the rod diameter d 2 in the region of the recess 2 and the rod diameter d 3 in the region of the recess 3 .
  • two details A, B which are shown in FIGS. 1 e ) and 1 f ), clarify the different rib or recess shapes.
  • Both recesses have the same flank angle ⁇ and the same curvature radii R 1 in the transition region between the recess base 2 a , 3 a and rib flanks 2 b , 3 b . Only the rib depths t 2 , t 3 and the recess widths b 2 , b 3 are different just like the rib pitches T 2 , T 3 (see FIG. 1 a )).
  • FIGS. 1 c ) and 1 d show that the recesses 2 , 3 or ribs 4 , 5 produce overall an inhomogeneous surface of the reinforcing rod 1 , which is responsible for the result that different regions have different shear load-bearing capacities and thus overall the load-bearing capacity of the reinforcing rod can be improved.
  • FIGS. 2 a ) and 2 b ) show an alternative reinforcing rod 21 with recesses 22 , 23 , which run in the same sense in the shape of a thread along the reinforcing rod 21 and have different slopes. Also in this way, ribs with different geometric properties can be produced, which have different shear loads on the rib base.
  • a reinforcing rod 31 is shown, in which ribs with different geometric properties are provided one within the other. While the rib pitch T 4 , that is, the distance between adjacent threads of the thread-shaped, peripheral rib is the same across the entire reinforcing rod, the depth t 4 , t 5 of the recess 22 , however, changes across the axial length of the rod. In this way, ribs 24 , 25 with different geometric properties transition into each other continuously and without steps and have correspondingly different load-bearing capacities due to the different rib depth t 4 , t 5 .
  • FIG. 4 shows a reinforcing rod 41 with a rib 42 of first order and a recess 43 with a rib depth t 42 , a flank inclination angle ⁇ , a pitch T 42 , which is the combination of the rib width B 42 plus the distance b 42 between two adjacent ribs.
  • FIG. 5 now for a reinforcing rod 51 of a rib corresponding to the rib 42 of first order from FIG. 4 and also a recess corresponding to the recess 43 from FIG. 4 , a narrower rib 52 of second order and also narrower recesses 53 are superimposed, which form together with the rib of first order an order system made from narrow ribs of higher order 52 , 54 , 55 , 56 and a wide rib 57 of lower order, which carries the narrow ribs.
  • FIG. 6 and FIG. 7 finally show for reinforcing rods 61 , 71 , multiple-step ribs 62 , 72 , which are likewise the result of superimposing several ribs, wherein the rib sub-regions 62 a , 62 b , 62 c have different flank inclinations ⁇ 0 , ⁇ 1 , ⁇ 2 and different rib widths B 0 , B 1 , B 2 .
  • the transition between the sub-regions of the rib is continuous with continuous changes in width and angle.
  • the multiple-step ribs also lead to the result that, if there is doubt, initially the narrowest sub-rib 62 c shears off earlier than the widest sub-rib 62 a and thus similarly provides for an improvement of the load-bearing capacity of the associated reinforcing rod 61 .
  • the present invention offers the advantage through formation of ribs with different geometric and/or material properties to improve the connection behavior of fiber-reinforced plastic reinforcing rods, whose application behavior in the load case is to be optimized and thus such plastic reinforcing rods are to be opened up to additional application possibilities. Consequently, a reinforcing rod made from fiber-reinforced plastic is provided, which helps to reduce the crack spacing and the crack width in the concrete surrounding the reinforcing rod, which leads to the described advantages.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Moulding By Coating Moulds (AREA)
US12/135,351 2007-06-08 2008-06-09 Reinforcing rod Abandoned US20080302063A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007027015.3 2007-06-08
DE102007027015A DE102007027015A1 (de) 2007-06-08 2007-06-08 Bewehrungsstab

Publications (1)

Publication Number Publication Date
US20080302063A1 true US20080302063A1 (en) 2008-12-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
US12/135,351 Abandoned US20080302063A1 (en) 2007-06-08 2008-06-09 Reinforcing rod

Country Status (4)

Country Link
US (1) US20080302063A1 (de)
EP (1) EP2000609A1 (de)
CA (1) CA2633986C (de)
DE (1) DE102007027015A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100031607A1 (en) * 2008-08-11 2010-02-11 Oliva Michael G Splice System for Fiber-Reinforced Polymer Rebars
US20110036049A1 (en) * 2009-08-11 2011-02-17 Oliva Michael G Splice System for Connecting Rebars in Concrete Assemblies
US20120204499A1 (en) * 2011-02-15 2012-08-16 Randel Brandstrom Concrete Panel with Fiber Reinforced Rebar
EP2857607A1 (de) 2013-10-01 2015-04-08 Latvijas Universitates agentura "Latvijas Universitates Polimeru mehanikas Instituts" GFK-Bewehrungsstab
US11041309B2 (en) * 2018-10-29 2021-06-22 Steven T Imrich Non-corrosive micro rebar
US11555310B2 (en) 2018-11-19 2023-01-17 Owens Corning Intellectual Capital, Llc Composite rebar
EP4121613A1 (de) * 2020-03-17 2023-01-25 Owens Corning Intellectual Capital, LLC Verbundstoffstabstahl mit nachgeschliffener oberflächenbehandlung

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2405092C2 (ru) * 2008-12-26 2010-11-27 Общество с ограниченной ответственностью "Коммерческое научно-производственное объединение "Уральская армирующая компания" Композитная арматура
DE102011109122A1 (de) * 2011-08-01 2013-02-07 B.T. Innovation Gmbh Mehrschichtiges Bauelement
DE102012019125B4 (de) * 2011-10-06 2016-07-07 Peter Markwirth Strahlenschutzcontainer für leicht- und mittelschwere radioaktiv belastetes Material.
EP3091135A1 (de) 2015-05-04 2016-11-09 Evonik Degussa GmbH Bewehrungsstab, verfahren zur herstellung und verwendung
DE202021000006U1 (de) 2021-01-03 2022-04-05 Herchenbach Industrial Buildings GmbH Erdnagel für ein lndustriezelt
DE102021003798A1 (de) 2020-07-24 2022-01-27 Herchenbach lndustrial Buildings GmbH Erdnagel für ein lndustriezelt

Citations (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2957240A (en) * 1956-08-17 1960-10-25 Robert A Brandes Method of making concrete reinforcing elements from ribbed steel bars
US3292337A (en) * 1962-11-07 1966-12-20 Dyckerhoff & Widmann Ag Armoring rods for reinforced concrete
US3837258A (en) * 1970-02-03 1974-09-24 C Williams Rock bolts
US4194873A (en) * 1978-01-09 1980-03-25 Ppg Industries, Inc. Apparatus for making pultruded product
US4229501A (en) * 1978-05-19 1980-10-21 Dyckerhoff & Widman Aktiengesellschaft Steel rods, especially reinforcing or tensioning rods
US4564315A (en) * 1983-07-05 1986-01-14 Rozanc Richard C Method for anchoring a bolt in a rock-like structure
US4584247A (en) * 1981-08-20 1986-04-22 The Titan Manufacturing Co. Pty. Ltd. Threading deformed bars
US4620401A (en) * 1985-04-26 1986-11-04 Societe Nationale De L'amiante Structural rod for reinforcing concrete material
US4922681A (en) * 1987-09-11 1990-05-08 Dyckerhoff & Widmann Ag Hot-rolled concrete reinforcing bar, in particular reinforcing ribbed bar
US4958961A (en) * 1988-10-08 1990-09-25 Dyckerhoff & Widmann Aktiengesellschaft Anchoring arrangement for a rod-shaped tension member formed of fiber reinforced composite material
US5152118A (en) * 1990-08-13 1992-10-06 Richmond Screw Anchor Co., Inc. Couplings for concrete reinforcement bars
US5152945A (en) * 1989-06-14 1992-10-06 Applied Research Of Australia Pty. Ltd. High strength fiber reinforced polymeric fasteners having threads, for example a nut and bolt
US5182064A (en) * 1990-10-17 1993-01-26 Nippon Petrochemicals Company, Limited Method for producing fiber reinforced plastic rods having helical ribs
US5362542A (en) * 1992-03-13 1994-11-08 Komatsu Plastics Industry Co., Ltd. Fiber reinforced plastic reinforcement for concrete
US5411347A (en) * 1992-01-24 1995-05-02 Erico International Corporation High dynamic strength reinforcing bar splice and method of making
US5437899A (en) * 1992-07-14 1995-08-01 Composite Development Corporation Structural element formed of a fiber reinforced thermoplastic material and method of manufacture
US5613334A (en) * 1994-12-15 1997-03-25 Cornell Research Foundation, Inc. Laminated composite reinforcing bar and method of manufacture
US5727357A (en) * 1996-05-22 1998-03-17 Owens-Corning Fiberglas Technology, Inc. Composite reinforcement
US5763042A (en) * 1994-06-28 1998-06-09 Reichhold Chemicals, Inc. Reinforcing structural rebar and method of making the same
US5876553A (en) * 1994-06-28 1999-03-02 Marshall Industries Composites, Inc. Apparatus for forming reinforcing structural rebar
US6123485A (en) * 1998-02-03 2000-09-26 University Of Central Florida Pre-stressed FRP-concrete composite structural members
US6316074B1 (en) * 1996-10-07 2001-11-13 Marshall Industries Composites, Inc. Reinforced composite product and apparatus and method for producing same
US6612085B2 (en) * 2000-01-13 2003-09-02 Dow Global Technologies Inc. Reinforcing bars for concrete structures
US7045210B2 (en) * 2001-02-21 2006-05-16 Sika Schweiz Ag Reinforcing bar and method for the production thereof
US7284356B2 (en) * 2005-09-06 2007-10-23 Genlyte Thomas Group, Llc Wound-in tenon for attachment of luminaire
US7363751B2 (en) * 2005-09-06 2008-04-29 Shakespeare Composite Structures, Llc Wound-in tenon/wound-in tenon collar for attachment of luminaire
US7624556B2 (en) * 2003-11-25 2009-12-01 Bbv Vorspanntechnik Gmbh Threaded deformed reinforcing bar and method for making the bar
US8172484B2 (en) * 2006-05-29 2012-05-08 Firep Rebar Technology Gmbh Fiber reinforced plastic drilling anchor

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE857269C (de) * 1941-02-26 1952-11-27 Emil Dipl-Ing Rossmann Profil fuer einen gedrillten Betonbewehrungsstahl
AT259204B (de) * 1964-06-20 1968-01-10 Hoesch Ag Betonbewehrungsstab
DE1936078A1 (de) * 1969-07-16 1971-01-28 Karl Karner Bewehrungsstaebe fuer Betonkonstruktionen
DE2622524A1 (de) * 1976-05-20 1977-11-24 Janovic Kassian Anton Dipl Ing Gerippter betonstahl und spannstahl
EP0560362A2 (de) * 1992-03-13 1993-09-15 KOMATSU PLASTICS INDUSTRY CO., Ltd. Faserverstärkte Kunststoffbewehrung für Beton
AU7637094A (en) * 1993-11-10 1995-05-29 Albany International Corp. Multilayer interlocking braided reinforcement member
DE4400974A1 (de) * 1994-01-14 1995-07-20 Inst Stahlbeton Bewehrung Ev Betonstahl
GB9700796D0 (en) * 1997-01-16 1997-03-05 Camplas Technology Improvements relating to reinforcing bars
GB9721974D0 (en) * 1997-10-17 1997-12-17 Rother Boiler Company Limited Construction fitting
AT4377U1 (de) * 1999-11-09 2001-06-25 Huber Stefan Glasfaserverbundstab als bewehrung für bauteile aus zementbeton
DE10121021A1 (de) 2001-04-28 2002-10-31 Schoeck Entwicklungsgmbh Bewehrungsstab aus faserverstärktem Kunststoff

Patent Citations (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2957240A (en) * 1956-08-17 1960-10-25 Robert A Brandes Method of making concrete reinforcing elements from ribbed steel bars
US3292337A (en) * 1962-11-07 1966-12-20 Dyckerhoff & Widmann Ag Armoring rods for reinforced concrete
US3837258A (en) * 1970-02-03 1974-09-24 C Williams Rock bolts
US4194873A (en) * 1978-01-09 1980-03-25 Ppg Industries, Inc. Apparatus for making pultruded product
US4229501A (en) * 1978-05-19 1980-10-21 Dyckerhoff & Widman Aktiengesellschaft Steel rods, especially reinforcing or tensioning rods
US4584247A (en) * 1981-08-20 1986-04-22 The Titan Manufacturing Co. Pty. Ltd. Threading deformed bars
US4564315A (en) * 1983-07-05 1986-01-14 Rozanc Richard C Method for anchoring a bolt in a rock-like structure
US4620401A (en) * 1985-04-26 1986-11-04 Societe Nationale De L'amiante Structural rod for reinforcing concrete material
US4922681A (en) * 1987-09-11 1990-05-08 Dyckerhoff & Widmann Ag Hot-rolled concrete reinforcing bar, in particular reinforcing ribbed bar
US4958961A (en) * 1988-10-08 1990-09-25 Dyckerhoff & Widmann Aktiengesellschaft Anchoring arrangement for a rod-shaped tension member formed of fiber reinforced composite material
US5152945A (en) * 1989-06-14 1992-10-06 Applied Research Of Australia Pty. Ltd. High strength fiber reinforced polymeric fasteners having threads, for example a nut and bolt
US5152118A (en) * 1990-08-13 1992-10-06 Richmond Screw Anchor Co., Inc. Couplings for concrete reinforcement bars
US5182064A (en) * 1990-10-17 1993-01-26 Nippon Petrochemicals Company, Limited Method for producing fiber reinforced plastic rods having helical ribs
US5411347A (en) * 1992-01-24 1995-05-02 Erico International Corporation High dynamic strength reinforcing bar splice and method of making
US5362542A (en) * 1992-03-13 1994-11-08 Komatsu Plastics Industry Co., Ltd. Fiber reinforced plastic reinforcement for concrete
US5437899A (en) * 1992-07-14 1995-08-01 Composite Development Corporation Structural element formed of a fiber reinforced thermoplastic material and method of manufacture
US5876553A (en) * 1994-06-28 1999-03-02 Marshall Industries Composites, Inc. Apparatus for forming reinforcing structural rebar
US5763042A (en) * 1994-06-28 1998-06-09 Reichhold Chemicals, Inc. Reinforcing structural rebar and method of making the same
US5851468A (en) * 1994-06-28 1998-12-22 Kaiser; Mark A. Reinforcing structural rebar and method of making the same
US5613334A (en) * 1994-12-15 1997-03-25 Cornell Research Foundation, Inc. Laminated composite reinforcing bar and method of manufacture
US5727357A (en) * 1996-05-22 1998-03-17 Owens-Corning Fiberglas Technology, Inc. Composite reinforcement
US6316074B1 (en) * 1996-10-07 2001-11-13 Marshall Industries Composites, Inc. Reinforced composite product and apparatus and method for producing same
US6123485A (en) * 1998-02-03 2000-09-26 University Of Central Florida Pre-stressed FRP-concrete composite structural members
US6612085B2 (en) * 2000-01-13 2003-09-02 Dow Global Technologies Inc. Reinforcing bars for concrete structures
US7045210B2 (en) * 2001-02-21 2006-05-16 Sika Schweiz Ag Reinforcing bar and method for the production thereof
US7624556B2 (en) * 2003-11-25 2009-12-01 Bbv Vorspanntechnik Gmbh Threaded deformed reinforcing bar and method for making the bar
US7284356B2 (en) * 2005-09-06 2007-10-23 Genlyte Thomas Group, Llc Wound-in tenon for attachment of luminaire
US7363751B2 (en) * 2005-09-06 2008-04-29 Shakespeare Composite Structures, Llc Wound-in tenon/wound-in tenon collar for attachment of luminaire
US8172484B2 (en) * 2006-05-29 2012-05-08 Firep Rebar Technology Gmbh Fiber reinforced plastic drilling anchor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100031607A1 (en) * 2008-08-11 2010-02-11 Oliva Michael G Splice System for Fiber-Reinforced Polymer Rebars
US20110036049A1 (en) * 2009-08-11 2011-02-17 Oliva Michael G Splice System for Connecting Rebars in Concrete Assemblies
US8413396B2 (en) * 2009-08-11 2013-04-09 Wisconsin Alumni Research Foundation Splice system for connecting rebars in concrete assemblies
US20120204499A1 (en) * 2011-02-15 2012-08-16 Randel Brandstrom Concrete Panel with Fiber Reinforced Rebar
US8511038B2 (en) * 2011-02-15 2013-08-20 Randel Brandstrom Concrete panel with fiber reinforced rebar
EP2857607A1 (de) 2013-10-01 2015-04-08 Latvijas Universitates agentura "Latvijas Universitates Polimeru mehanikas Instituts" GFK-Bewehrungsstab
US11041309B2 (en) * 2018-10-29 2021-06-22 Steven T Imrich Non-corrosive micro rebar
US11555310B2 (en) 2018-11-19 2023-01-17 Owens Corning Intellectual Capital, Llc Composite rebar
EP4121613A1 (de) * 2020-03-17 2023-01-25 Owens Corning Intellectual Capital, LLC Verbundstoffstabstahl mit nachgeschliffener oberflächenbehandlung

Also Published As

Publication number Publication date
DE102007027015A1 (de) 2008-12-11
CA2633986C (en) 2012-08-21
CA2633986A1 (en) 2008-12-08
EP2000609A1 (de) 2008-12-10

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