WO2014172367A1 - Distancier de cage de produit en béton - Google Patents

Distancier de cage de produit en béton Download PDF

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Publication number
WO2014172367A1
WO2014172367A1 PCT/US2014/034192 US2014034192W WO2014172367A1 WO 2014172367 A1 WO2014172367 A1 WO 2014172367A1 US 2014034192 W US2014034192 W US 2014034192W WO 2014172367 A1 WO2014172367 A1 WO 2014172367A1
Authority
WO
WIPO (PCT)
Prior art keywords
spacer
cage
concrete
shaped
wires
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.)
Ceased
Application number
PCT/US2014/034192
Other languages
English (en)
Inventor
Claudio Subacchi
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.)
Hawkeye Concrete Products Co
Original Assignee
Hawkeye Concrete Products Co
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 Hawkeye Concrete Products Co filed Critical Hawkeye Concrete Products Co
Publication of WO2014172367A1 publication Critical patent/WO2014172367A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/168—Spacers connecting parts for reinforcements and spacing the reinforcements from the form
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction

Definitions

  • a reinforcing wire cage is provided as reinforcement to produce a product of the required strength.
  • the reinforcing cage In order to produce a quality concrete product, the reinforcing cage must be positioned within the concrete forms used to produce the product so that the cage will be a predetermined distance from the inside and outside walls of the finished product. Since the cage will be subjected to various forces during the manufacturing process, it is important that the cage be properly positioned from the walls of the forms and that the required distance from the forms be maintained throughout the casting process. In order to accomplish the proper spacing, there are commonly provided spacing elements, called spacers, which can be fastened to the cage to space it from and maintain it the proper distance from the form walls.
  • spacers must also be designed so as to resist the forces that occur during the casting process, which can create voids in the finished product, resulting in the finished product not meeting specifications that require resistance to hydrostatic pressure.
  • the two commonly used methods of producing concret products create different forces on a reinforcing cage and thus upon the spacers used in connection with the cage.
  • an annular space is provided by an inner core and an outer jacket which comprise the form set.
  • One of the common casting methods involves lowering the jacket over the core after the cage is in place. Unless the spacers used are capable of resisting the downward axial forces applied as the jacket is towered in place, the spacers can be dislodged or distorted.
  • the spacers fo the reinforcing cage must be capable of resisting not only the axial forces that occur, but also the forces upon the spacers as the cage tends to twist during rotation of the packer head.
  • spacers There are known a number of different spacers which have been designed in an attempt to resist ail of the forces exerted upon the spacers during the casting process.
  • Many spacers are formed from spring steel with an open hook at each end to provide for attaching the spacer to the reinforcing cage. Between the attaching hooks there is typically formed a spacing nose.
  • These steel spacers work well in most instances but they require special tools to install them on the cage, and occasionally some of the spacers can become dislodged from the cage. Also, because of the forces applied to them during the casting process, these spacers can move causing improper spacing of the cage from the concrete forms.
  • the spacer of the invention provides a unique element formed of concrete or a geopoiymer mateial.
  • the spacer has a pair of spaced-apart notches, one elongated T- shaped notch and one L-shaped notch that provide for simple, quick installation on adjacent horizoniai wires of the reinforcing cage.
  • T-shaped notch the spacer is hooked onto a horizontal wire and then rotated upwardly until the L-shaped notch is aligned with the next horizontal wire.
  • the spacer is then further rotated until the wire is in the L-shaped notch after which the spacer is pushed downwardly and released to positively lock the spacer onto the cage.
  • the shap of the spacer provides the desired cover, which is the distance between the cage and surface of the outside form or jacket. The amount of cover depends upon the size of the spacer when formed.
  • FIG, 1 is a perspective view of a portion of a reinforcing cage and showing a spacer of the invention inserted between a pair of wires of the cage;
  • FIG. 2 is a perspective view of a portion of a reinforcing cage and showing the spacer positioned so that a wire can be inserted into the T-shaped notch of the spacer;
  • FIG. 3 a perspective view of the spacer being rotated vertically so that the L ⁇ shaped notch is in alignment with the adjacent wire of the cage;
  • FIG. 4 is a perspective view showing the wire positioned in the L-shaped notch of the spacer:
  • the drawings show a representative form of a portion of a reinforcing mesh cage 10 that consists of a plurality of relatively uniformly spaced wires 12 and 14 that are typically welded at their intersections to provide a unitary product.
  • the nominal spacing between th wires is 2" or 3" although if may be more or less.
  • the cage 10 will be positioned in the concrete form with some wires 12 oriented horizontally, while the other wires 14 are oriented vertically.
  • the spacer of the Invention indicated generally by the reference numeral 18, is formed from concrete, a geo- potymer or other suitable material.
  • the spacer 16 has a main body 8 that is generally rectangular in shape with a front edge 20, a back edge 22 and rounded ends 24 and 28. Near the end 24 there is formed in the back edge 22 a T-shaped notch 28. Similarly, near the end 26 there is formed in the back edge 26 an L-shaped notch 30, In the illustrated embodiment of the invention, the spacing between the notches 28 and 30 is such that the spacer 16 can be installed on both 2" and 3" mesh cages and would provide 1 " of cover, which is the distanc between the cage and surface of the outside form or jacket. Obviously, the exact dimensions of the spacer and the notches will depend upon the size and spacing of the wires of the cage, but with the design of the spacer of the invention, a spacer of one size will fit cages having different wire spacing.
  • the spacer 16 is shown as it would be positioned by the installer between a pair of adjacent horizontal wires 12, with the end 24 extending inside the cage 10 and the T-shaped notch 28 adjacent and Just beneath a wire 12, The spacer 6 is then rotated horizontally (as shown by the arrow in Fig. 1 ⁇ and then lifted so that the wire 12 is inside the T-shaped notch 28 as shown In Fig. 2. With the wire 12 fully engaged in the notch 28, the installer then swings the spacer 16 upwardly as shown by the arrow in Fig. 3 until the L-shaped notch 30 is adjacent the next upper wire 12.
  • Fig, 4 shows the spacer 16 positioned with the wire 12 inside the L-shaped notch 30 at which time the installer can release or push the spacer 16 down to Sock it place on the two adjacent wires 12 as shown in Fig, 5.
  • spacer 16 has no sharp edges, and the rounded ends 24 and 26 provide for a "shoe horn" effect when the outer-form or jacket is slipped down over the cage 10 preliminar to the casting process. Once Socked into place, the spacer 16 can withstand the considerable amount of all forces exerted during the entire casting process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Abstract

L'invention concerne un distancier pour maintenir l'espacement de la cage d'armature vis-à-vis des coffrages utilisés dans la réalisation de produits en béton. Le distancier est réalisé en béton ou en un matériau géo-polymère et a une paire d'encoches espacées, une en forme de T et une en forme de L qui permettent une installation simple et rapide sur des fils horizontaux adjacents de la cage d'armature. Lorsqu'il est verrouillé en place, la forme du distancier assure la couverture souhaitée, dont la quantité dépend de la taille du distancier lorsqu'il est formé.
PCT/US2014/034192 2013-04-16 2014-04-15 Distancier de cage de produit en béton Ceased WO2014172367A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361812503P 2013-04-16 2013-04-16
US61/812,503 2013-04-16

Publications (1)

Publication Number Publication Date
WO2014172367A1 true WO2014172367A1 (fr) 2014-10-23

Family

ID=51686987

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/034192 Ceased WO2014172367A1 (fr) 2013-04-16 2014-04-15 Distancier de cage de produit en béton

Country Status (2)

Country Link
US (1) US20140308474A1 (fr)
WO (1) WO2014172367A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10017942B2 (en) * 2016-12-13 2018-07-10 Christopher McCarthy Rebar wall set-up bar
US11274447B2 (en) * 2020-02-18 2022-03-15 Hawkeyepedershaab Concrete Technologies, Inc Lift hole forming device for concrete products
US11987982B2 (en) * 2021-12-02 2024-05-21 Disney Enterprises, Inc. Structural support system for rockwork with mechanical fastening of adjacent chip assemblies
US12084863B1 (en) * 2024-04-09 2024-09-10 T. J. Harris Company Coupler for concrete reinforcing members

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US871210A (en) * 1906-07-25 1907-11-19 Robert A Cummings Connecting and spacing clip.
US5269113A (en) * 1988-08-27 1993-12-14 Siegfried Dreizler Spacer suited for being embedded in concrete
US6899310B1 (en) * 2003-04-17 2005-05-31 Julian P. Trangsrud Cage spacer
US20070101672A1 (en) * 2003-03-10 2007-05-10 Gerd Gunther Reinforcing elements and reinforced concrete or prestressed concrete parts produced by means of the same
US20110219721A1 (en) * 2010-03-11 2011-09-15 Rocky Mountain Prestress, LLC Mesh spacer for reinforced concrete

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1495659A (en) * 1922-08-15 1924-05-27 Wilbur W Williamson Chair for reenforcing steel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US871210A (en) * 1906-07-25 1907-11-19 Robert A Cummings Connecting and spacing clip.
US5269113A (en) * 1988-08-27 1993-12-14 Siegfried Dreizler Spacer suited for being embedded in concrete
US20070101672A1 (en) * 2003-03-10 2007-05-10 Gerd Gunther Reinforcing elements and reinforced concrete or prestressed concrete parts produced by means of the same
US6899310B1 (en) * 2003-04-17 2005-05-31 Julian P. Trangsrud Cage spacer
US20110219721A1 (en) * 2010-03-11 2011-09-15 Rocky Mountain Prestress, LLC Mesh spacer for reinforced concrete

Also Published As

Publication number Publication date
US20140308474A1 (en) 2014-10-16

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