WO2008058312A1 - False formwork for moulding concrete panels - Google Patents
False formwork for moulding concrete panels Download PDFInfo
- Publication number
- WO2008058312A1 WO2008058312A1 PCT/AU2007/001654 AU2007001654W WO2008058312A1 WO 2008058312 A1 WO2008058312 A1 WO 2008058312A1 AU 2007001654 W AU2007001654 W AU 2007001654W WO 2008058312 A1 WO2008058312 A1 WO 2008058312A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- panel
- opening
- cast
- sideform
- false
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0002—Auxiliary parts or elements of the mould
- B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0064—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces
- B28B7/0085—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces with surfaces for moulding chamfers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0088—Moulds in which at least one surface of the moulded article serves as mould surface, e.g. moulding articles on or against a previously shaped article, between previously shaped articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
- B28B7/164—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes for plates, panels, or similar sheet- or disc-shaped articles
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
- E04G15/02—Forms or shutterings for making openings, cavities, slits, or channels for windows, doors, or the like
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G2011/067—Integrated forms comprising shuttering skin, bracing or strutting arrangements, workplatforms and railings
Definitions
- This invention relates to formwork for use in the construction of concrete panels, in particular tilt-up wall panels, where the panels are cast in a stack one on top of the other. More specifically, the invention relates to false formwork for producing tilt-up concrete wall panels in which window or door openings are formed and to a method of casting a concrete panel.
- false formwork In traditional formwork methods in the moulding of a concrete wall panel, in situations where a window or door opening is required to be formed in the panel, it is common practice for false formwork, normally constructed of timber, to be installed within the panel mould so that the false formwork defines the opening to be formed.
- the false timber formwork is nailed together and plastic fillet forming strips are attached to the timber formwork around parts of the formwork defining upper and lower perimetral parts of the opening. With the false formwork in place, the void or cavity defined by the false formwork is filled with either dirt/rubble or polystyrene foam, following which the concrete is poured into the mould to form the panel.
- a false formwork system which includes a plurality of sideforms which are able to be interconnected to define a perimeter of an opening in a panel to be cast; a support structure carried by the sideforms for supporting components used to mould a false skim coat overlying the opening when the panel is cast; and an opening demarcation portion carried by each of at least some of the sideforms, each opening demarcation portion defining a zone of weakness to demarcate the skim coat of the cast panel from a remainder of the panel and to facilitate removal of the skim coat from the remainder of the panel by breakage along the zone of weakness.
- Each sideform may be connected to an adjoining sideform by a corner form.
- each sideform may have a receiving formation in which a mating formation of the corner form is receivable.
- Each sideform may be an angle section having a foot portion and an element extending substantially orthogonally from the element, the element defining the opening demarcation portion.
- the foot portion may be of sufficient length to support the panel to be cast on an underlying structure, such as a cast panel or bed, in a load distributing manner.
- Each foot portion may be secured, in use, to the underlying structure by an adhesive material such as double-sided tape. Instead, each foot portion may be secured to the underlying structure by fasteners such as, for example, bolts, screws, nails, or the like.
- each sideform may be a bevel surface defining portion projecting at an angle from the element in a direction away from the foot portion of the element to form a bevel on one perimetral edge of the opening in the panel.
- the free edge of the opening demarcation portion on each of the sideforms members terminates approximately 2 mm below the finished upper surface of the panel to be cast, while the thickness of the skim coat is in the order of 30 mm.
- the support structure of each sideform may be a ledge arranged on the element intermediate the opening demarcation portion and the foot portion, the ledge extending substantially parallel to, and in the same direction as, the foot portion.
- Each sideform may include an attachment formation for attaching a bevel surface defining member of an elastomeric material for imparting a bevel to an opposed perimetral edge of the opening in the panel.
- the system includes the bevel surface defining member for each sideform, each member being removably attachable to its associated sideform to enable the member to be removed from its sideform to facilitate removal of the sideform from the opening in the panel.
- the system may include an intermediate support member for supporting the components to form the false skim coat, the intermediate support member being of a dimension to support the components at a position less than a thickness of the panel to be cast.
- the intermediate support member may be a support frame.
- the components may be sheets of plywood.
- the sideforms and/or the corner forms may be of a plastics material or an aluminium material.
- a method of casting a concrete panel including erecting a plurality of sideforms on a base to define an outer periphery of a panel to be cast; erecting false formwork within the sideforms to define an opening in the panel to be cast; demarcating at least a portion of a periphery of the opening; mounting infill in the false formwork so that the infill lies at a level lower than a surface of the panel to be cast; pouring concrete into the sideforms so that the concrete overlies the infill to define a false skim coat over the opening; and allowing the concrete to set to provide an uninterrupted upper surface of the panel.
- the method may include demarcating the at least portion of the periphery of the opening by forming a line of weakness in the cast concrete from below the upper surface of the panel.
- the method may include casting a further panel on the panel previously cast in substantially the same manner as the panel previously cast and using the previously cast panel as the base for the further panel to be cast, the uninterrupted upper surface of the panel previously cast facilitating a lack of an imprint in a lower surface of the further panel.
- the method may include, once the concrete has been finished and allowed to set, removing the sideforms, raising the panel and removing the infill. After removal of the infill, the method may include breaking away the false skim coat along the demarcated periphery of the opening. The method may include removing the false formwork for re-use.
- Fig. 1 is a fragmentary, partly sectioned, perspective view of a panel casting system for moulding a concrete panel on a base and which has a window opening formed therein using an embodiment of a false formwork system;
- Fig. 2 is a fragmentary, part sectional view of a cast panel and the false formwork system which is used to form the window opening;
- Fig. 3 is a fragmentary, exploded perspective view of part of the false formwork system used to form the opening in the cast panel.
- reference numeral 10 generally designates a cast concrete panel.
- the panel 10 is formed by pouring concrete into a mould formed by a plurality of interconnected orthogonally arranged main sideforms 11 which are affixed by any suitable means to a base or bed 12.
- the bed 12 could be a base concrete panel in situations where concrete panels are cast one on top of the other.
- a square or rectangular window opening is formed in the cast panel 10 using an embodiment of a false formwork system 40 of the invention. It will be appreciated that the false formwork system 40 of the invention could also be used for forming a door opening in the panel 10.
- Each of the sideforms 11 is formed from an aluminium extrusion of angle section.
- a vertical flange 14 of the sideform 11 has fillets extending along the top and bottom edges of a face 15 of the vertical flange 14 of the sideform 11, so as to provide bevelled edge surfaces extending around upper and lower perimeters of the cast panel 10.
- a direction such as "upper” or “lower”
- the false formwork system 40 comprises a plurality of elongate sideforms 17 interconnected by corner forms 18, the sideforms 17 and the corner forms 18 together defining a perimeter of the opening 13.
- each sideform 17 is formed from a plastics extrusion of angle section having an operatively vertically extending element 19 and a laterally projecting foot portion, or foot, 20.
- the foot 20 is directly supported on the base 12, in use, and is affixed to the base 12 by means of an adhesive such as, for example, a doubled-sided adhesive tape (not shown) or fasteners such as bolts, screws, nails, or the like.
- the foot 20 is also of a sufficient length to distribute a load imparted to the bed or base 12.
- the element 19 terminates at its operatively upper end in an opening demarcation portion in the form of an angled lip or flange 21 which extends from the element 19 in a direction away from the foot 20.
- a height dimension of the element 19 is such that an upper free edge of the flange 21 lies just below a top of a surface 22 (Fig. 2) of the cast panel 10.
- the flange 21 is used to form an upper perimetral edge of the opening 13.
- An operatively inner surface of the element 19 is provided with a support structure in the form of an inwardly projecting ledge 24 which extends substantially parallel to, and in the same direction as, the foot 20 of the sideform 17.
- the ledge 24 is arranged below the flange 24.
- the ledges 24 of the sideforms 17 support one or more infill plywood sheets 26 (shown in Fig. 2).
- the infill sheets 26 occlude the opening 13 and form a recessed casting bed which is filled with concrete when the panel 10 is poured to form a false skim coat 29.
- the casting bed is about 30mm in height.
- an intermediate support member in the form of a central support frame 28 is used to support inner edges of the sheets 26.
- the false skim concrete coat 29 is finished uniformly with the cast panel 10 to provide a uniform surface 22 to the panel 10 so that there will be no imprints or variants to the finish of a mating cast face of a further panel (not shown) which is cast on the surface 22 of the panel 10.
- the false skim coat 29 can easily be broken away from the panel 10 due to the narrow break lines created by the upper edges of the flanges 21 terminating just below the surface 22 of the panel 10. Each break line generally will be in the order of 2mm thick. With the skim coat 29 broken away, the upper perimetral edges of the opening 13 will only require a light stone to smooth them off.
- a channel shaped keyway 31 is arranged on the element 19 below, and on the same side of the element 19 as, the ledge 24.
- each corner piece form 18 is attached to adjoining sideforms 17 by means of projecting tongues 30 which slidably locate in the keyways 31 of the sideforms 17.
- each sideform 17 is provided with a detachable longitudinal insert 33 along its bottom edge at the junction of the element
- the insert 33 has a bevel surface 34 so as to form a bevel about the lower perimetral edge of the opening 13.
- the insert 33 is formed from an elastomeric material such as a rubber extrusion.
- the shape of the upper flange 21 as well as the bevel surface 34 on the insert 33 can be made to various shapes in order to provide a decorative edge finish for the edges of the window opening 13.
- the inserts 33 are removed from the sideforms 17. Being of an elastomeric material, the inserts 33 can easily be detached from the sideforms 17. The sideforms 17 and corner forms 18 can then be pushed out of the opening 13 for re-use.
- an improved false formwork system which enables concrete panels, having window/door openings formed therein, to be cast one on top of the other in an extremely simple and cost effective manner and with minimal, if any, formwork imprints being left on the cast face of the upper panel. It is another advantage of the invention that an improved false formwork system for use in casting a concrete panel, having a window/door opening formed therein, is provided which can be installed easily without requiring skilled labour and which is re-useable thereby improving the cost effectiveness of the false formwork system.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002669366A CA2669366A1 (en) | 2006-11-14 | 2007-10-31 | False formwork for moulding concrete panels |
US12/514,257 US20100000177A1 (en) | 2006-11-14 | 2007-10-31 | False formwork for moulding concrete panels |
AU2007321754A AU2007321754B2 (en) | 2006-11-14 | 2007-10-31 | False formwork for moulding concrete panels |
EP07815458A EP2084346A4 (en) | 2006-11-14 | 2007-10-31 | False formwork for moulding concrete panels |
NZ581893A NZ581893A (en) | 2006-11-14 | 2007-10-31 | False formwork for moulding concrete panels having a false skim coat |
US14/230,869 US9487950B2 (en) | 2006-11-14 | 2014-03-31 | False formwork for moulding concrete panels |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2006906335 | 2006-11-14 | ||
AU2006906335A AU2006906335A0 (en) | 2006-11-14 | False formwork for moulding concrete panels |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/514,257 A-371-Of-International US20100000177A1 (en) | 2006-11-14 | 2007-10-31 | False formwork for moulding concrete panels |
US14/230,869 Division US9487950B2 (en) | 2006-11-14 | 2014-03-31 | False formwork for moulding concrete panels |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008058312A1 true WO2008058312A1 (en) | 2008-05-22 |
Family
ID=39401229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2007/001654 WO2008058312A1 (en) | 2006-11-14 | 2007-10-31 | False formwork for moulding concrete panels |
Country Status (6)
Country | Link |
---|---|
US (2) | US20100000177A1 (en) |
EP (1) | EP2084346A4 (en) |
AU (1) | AU2007321754B2 (en) |
CA (1) | CA2669366A1 (en) |
NZ (2) | NZ581893A (en) |
WO (1) | WO2008058312A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9731433B1 (en) * | 2014-02-04 | 2017-08-15 | James J. Shumaker | Cement forms having pin connected form sections |
US20210140183A1 (en) * | 2018-09-06 | 2021-05-13 | MW Panel Tech, LLC | Configurable form system for fabricating precast panels |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US20130299375A1 (en) * | 2012-05-10 | 2013-11-14 | Shihhsiang Chen | Forming Mold for Plastic Products, Using Method Thereof, and Packaging Box for Liquid Crystal Glass |
AU2018284205A1 (en) * | 2017-06-12 | 2020-01-16 | MillerKnoll, Inc | Workstation management system |
CN107791369A (en) * | 2017-11-28 | 2018-03-13 | 济南德翼建设工程有限公司 | A kind of free modular production mould of prefabricated components |
US10947746B2 (en) * | 2018-09-06 | 2021-03-16 | MW Panel Tech, LLC | Configurable steel form system for fabricating precast panels |
JP7425968B2 (en) | 2020-03-19 | 2024-02-01 | 積水ハウス株式会社 | Method for manufacturing formwork and concrete building materials |
CN112356237B (en) * | 2020-10-26 | 2022-08-26 | 宁波市鄞州智伴信息科技有限公司 | Production mould of anti-drop early warning jarring drawing of patterns for ceramic tile |
US11834823B2 (en) * | 2021-04-07 | 2023-12-05 | Monarch Materials Group, Inc. | Method of forming vertical wall around window frame |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19902172A1 (en) * | 1999-01-21 | 2000-09-21 | D.D.C. Planungs-, Entwicklungs- Und Management Ag | Shuttering for window-broken structures employs counter-form parts adjacently parallel at window breaks and filled out here by e.g. window closures with sealing. |
WO2001044600A1 (en) * | 1999-12-16 | 2001-06-21 | Tiltform Licensing Pty Ltd | False splay sideform system |
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US2531576A (en) * | 1948-03-25 | 1950-11-28 | Buttress & Mcclellan Inc | Method of casting concrete building elements |
US2684518A (en) * | 1951-05-07 | 1954-07-27 | Leslie A Whitlock | Hole forming device |
US2728126A (en) * | 1953-04-06 | 1955-12-27 | Leslie A Whitlock | Blind-end hole forming device for poured concrete slabs |
NL8603068A (en) | 1986-12-01 | 1988-07-01 | Oudenallen S Betonindustrie B | A METHOD FOR MANUFACTURING SYSTEM FLOORS. |
JPH01215507A (en) * | 1988-02-25 | 1989-08-29 | Onoda Autoclaved Light Weight Concrete Co Ltd | Concrete shuttering for manufacturing light weight concrete molding having opening part |
JPH0715221B2 (en) * | 1989-09-13 | 1995-02-22 | 大豊建設株式会社 | Method of forming sleeve for through-floor piping |
US5069849A (en) * | 1990-02-07 | 1991-12-03 | Wain Peter L | Method for forming a molding |
DE4205927C1 (en) * | 1992-02-26 | 1993-08-19 | August 6653 Blieskastel De Braun | |
DE19605467B4 (en) * | 1996-02-14 | 2006-05-04 | August Braun | Cleaning strip for window sills, door frames or the like at the transition to plaster |
DE29701257U1 (en) * | 1997-01-27 | 1998-05-20 | Schneider Albert | Formwork for a precast concrete element |
US6427398B1 (en) * | 2000-05-04 | 2002-08-06 | Certainteed Corporation | Method of making window frame components having various end using applications |
US6574936B1 (en) * | 2001-05-11 | 2003-06-10 | Accutrack Systems, Inc. | Fabric wall panel system |
AU147567S (en) * | 2001-12-04 | 2002-04-26 | Tiltform Design & Dev Pty Ltd | A side formwork extruded metal section |
AU147568S (en) * | 2001-12-04 | 2002-04-26 | Tiltform Design & Dev Pty Ltd | Formwork corner connector |
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AUPR984902A0 (en) * | 2002-01-08 | 2002-01-31 | Nicolo, Assunta | A device and system |
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US20090193729A1 (en) * | 2006-10-20 | 2009-08-06 | Hubert Max Kustermann | Wall Opening Form |
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2007
- 2007-10-31 US US12/514,257 patent/US20100000177A1/en not_active Abandoned
- 2007-10-31 NZ NZ581893A patent/NZ581893A/en not_active IP Right Cessation
- 2007-10-31 WO PCT/AU2007/001654 patent/WO2008058312A1/en active Application Filing
- 2007-10-31 AU AU2007321754A patent/AU2007321754B2/en active Active
- 2007-10-31 EP EP07815458A patent/EP2084346A4/en not_active Withdrawn
- 2007-10-31 CA CA002669366A patent/CA2669366A1/en not_active Abandoned
- 2007-10-31 NZ NZ602866A patent/NZ602866A/en unknown
-
2014
- 2014-03-31 US US14/230,869 patent/US9487950B2/en active Active
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Publication number | Priority date | Publication date | Assignee | Title |
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DE19902172A1 (en) * | 1999-01-21 | 2000-09-21 | D.D.C. Planungs-, Entwicklungs- Und Management Ag | Shuttering for window-broken structures employs counter-form parts adjacently parallel at window breaks and filled out here by e.g. window closures with sealing. |
WO2001044600A1 (en) * | 1999-12-16 | 2001-06-21 | Tiltform Licensing Pty Ltd | False splay sideform system |
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Title |
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DATABASE WPI Week 200061, Derwent World Patents Index; Class Q43, AN 2000-628887, XP008115333 * |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9731433B1 (en) * | 2014-02-04 | 2017-08-15 | James J. Shumaker | Cement forms having pin connected form sections |
US20210140183A1 (en) * | 2018-09-06 | 2021-05-13 | MW Panel Tech, LLC | Configurable form system for fabricating precast panels |
Also Published As
Publication number | Publication date |
---|---|
US9487950B2 (en) | 2016-11-08 |
NZ602866A (en) | 2014-05-30 |
EP2084346A1 (en) | 2009-08-05 |
AU2007321754A1 (en) | 2008-05-22 |
US20140208685A1 (en) | 2014-07-31 |
AU2007321754B2 (en) | 2014-08-28 |
CA2669366A1 (en) | 2008-05-22 |
US20100000177A1 (en) | 2010-01-07 |
EP2084346A4 (en) | 2012-05-09 |
NZ581893A (en) | 2013-02-22 |
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