WO2010113105A2 - Light weight concrete sandwich panels - Google Patents

Light weight concrete sandwich panels Download PDF

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Publication number
WO2010113105A2
WO2010113105A2 PCT/IB2010/051363 IB2010051363W WO2010113105A2 WO 2010113105 A2 WO2010113105 A2 WO 2010113105A2 IB 2010051363 W IB2010051363 W IB 2010051363W WO 2010113105 A2 WO2010113105 A2 WO 2010113105A2
Authority
WO
WIPO (PCT)
Prior art keywords
tongue
groove
panels
profiles
joint
Prior art date
Application number
PCT/IB2010/051363
Other languages
French (fr)
Other versions
WO2010113105A3 (en
Inventor
Beetles David Vernon
Original Assignee
Beetles David Vernon
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 Beetles David Vernon filed Critical Beetles David Vernon
Priority to NZ596127A priority Critical patent/NZ596127A/en
Priority to AU2010231563A priority patent/AU2010231563A1/en
Publication of WO2010113105A2 publication Critical patent/WO2010113105A2/en
Publication of WO2010113105A3 publication Critical patent/WO2010113105A3/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/044—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of concrete
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/38—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure with attached ribs, flanges, or the like, e.g. framed panels

Definitions

  • This invention relates to the method of preparation of light weight concrete sandwich panels.
  • Lightweight concrete panels (generic name 'Styrocon') were invented and patented by J. W. Elischer in 1972. These panels, and copies thereof, have since inception, been edge jointed by means of tongue and groove profiles moulded into the panel's perimeter edges during manufacture.
  • tongue and groove profiles have employed tapered edges to facilitate easy engagement of the tongue into the groove.
  • the existing tongue and groove methodology of using tapered tongue and groove interfaces for location and lateral alignment of panels has inherent shortcomings. These tapered interfaces allow lateral movement at the joint when the tongue is not fully engaged in the groove. Any material (eg. adhesive) in the joint prevents full engagement of tongue into groove and lateral displacement can occur causing surfaces of adjacent panels to be misaligned. As a result, panel surfaces will not be flush and planimetric differences between panels will occur. This misalignment affects the flushing and finishing of the joint and prevents the desired planimetric continuation of the surfaces of adjacent panels.
  • Fig 5 shows how the prior art deals with this misalignment, whereby panel faces are recessed 13 at joining edges to accommodate jointing tape 14 and a filling material 15 which is applied in excess and then sanded back in an attempt to conceal or disguise any misalignment.
  • the principal object of this invention is to come out with novel tongue and groove profiles for panel construction.
  • Another object of the invention is to overcome the shortcomings of the existing tongue and groove methodology of using tapered tongue and groove interfaces for location and lateral alignment of panels.
  • the invention proposes novel profiles for the tongue and groove which share a common radius and are semi-circular in shape. 5. Statement of invention
  • the invention provides a tongue and groove profile joint for panel construction which prevents lateral displacement of panels, wherein the tongue and grooves are semi-circular with common radius.
  • the displacement of the centre of the radius of the groove is greater than the tongue which creates a cavity between the apex of the tongue and the trough of the groove, which can be used to accommodate adhesive, thereby maintaining zero lateral displacement of the so joined panels.
  • Fig 1 illustrates the novel tongue and groove profiles with common diameter 2R, base lines 1 and 2, panel joint faces 3 and 4 center of the radius 5 and 6, parallel parts 7 and 8 displased distance D1 and D2.
  • Fig 2 illustrates the joined panel and groove profile with the cavity.
  • Fig 3 shows the prior art wherein the tongue and groove of the panel joint is not fully engaged and with a separation distance S between the joint faces of the panels, thereby allowing the surfaces of the adjoining panels to have planimethc displacement 12.
  • Fig 4 shows this invention wherein the panel joint is separated by the same distance S but resulting in zero planimetric displacement provided S ⁇ D2.
  • Fig 5 illustrates the prior art with misalignment of panels.
  • This invention overcomes the shortcomings of the prior art and also provides additional advantages.
  • This invention employs new profiles for the tongue and groove, both of which share a common radius, semi-circular shape.
  • the common diameter dimension of 2R in Fig 1 for both tongue and groove ensures a zero lateral tolerance between the tongue and groove members at their base lines 1 and 2.
  • the base lines are lines parallel to the panel joint faces 3 and 4, and passing through the centres of the radii 5 and 6 of the tongue and groove members as shown in Fig 1.
  • centre points 5 and 6 of the radii of the tongue and groove profiles are marginally displaced from the panel joint faces 3 and 4, thereby providing tongue and groove shapes exhibiting parallel parts 7 and 8, with the parallel parts having a separation dimension equal to the profile diameter of 2R and having lengths D1 and D2 equal to the distances between each joint face 3 and 4, and the centre points of the radii 5 and 6 of the tongue and groove profiles respectively.
  • the displaced distance D1 of the centre point of the groove radius is marginally greater than the displaced distance D2 of the centre point of the tongue radius, allowing a cavity between the apex 10 of the tongue and the trough 9 of the groove when the tongue is fully engaged in the groove.
  • This cavity 11 in Fig 2 can be used to accommodate adhesive material, or provide a capillary break for prevention of moisture transgression through the joint when the joint is 'dry' assembled (ie. no adhesive).
  • Fig 3 shows the prior art wherein the tongue and groove of the panel joint is not fully engaged and with a separation distance S between the joint faces of the panels, thereby allowing the surfaces of the adjoining panels to have planimethc displacement 12.
  • Fig 4 shows this invention wherein the panel joint is separated by the same distance S but resulting in zero planimetric displacement provided S ⁇ D2.
  • the tongue and groove profile diameters are both 20mm, which allows a 20 mm diameter solid or tubular spline to be used as a jointing member between two abutting groove profiles.
  • the hollow spline can be used for the location of services (electric, telephone, etc) or to house a holding down bolt or other structural member connecting roof structure to foundation.
  • the splines can be of plastic, metallic or other material.
  • a groove edge of a panel can easily be converted to a tongue edge by gluing or otherwise fixing in a spline of same diameter as the groove.
  • the prior art cannot form a tongue profile in this simple fashion.
  • Such splines can be intermittent and need not be continuous.
  • the tongue and groove edges of the panel are formed by appropriately profiled moulds that are jig held at the perimeter during panel manufacture.
  • These moulds can be made of metallic, plastic, or other material, either fabricated or formed by an extrusion process.
  • Such moulds can have either a tongue or a groove profile, or a combination of both profiles with tongue profile to one face and groove profile to the opposite face, thereby allowing the use of the mould to simultaneously form both tongue and groove profiles in the edges of adjacent panels during manufacture.
  • the lightweight building panel comprising a lightweight foraminous cementious core bonded cementiously to surface layers of fibre reinforced cement or other sheet material of desired length and thickness.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

A light weight concrete panel consisting of semicircular tongue and groove profiles with a joint that prevents lateral displacement of the panel at the joint.

Description

1. TITLE OF THE INVENTION: LIGHT WEIGHT CONCRETE
SANDWICH PANELS
2. Field of the invention.
This invention relates to the method of preparation of light weight concrete sandwich panels.
3. Prior art:
Lightweight concrete panels (generic name 'Styrocon') were invented and patented by J. W. Elischer in 1972. These panels, and copies thereof, have since inception, been edge jointed by means of tongue and groove profiles moulded into the panel's perimeter edges during manufacture.
These tongue and groove profiles have employed tapered edges to facilitate easy engagement of the tongue into the groove. The existing tongue and groove methodology of using tapered tongue and groove interfaces for location and lateral alignment of panels has inherent shortcomings. These tapered interfaces allow lateral movement at the joint when the tongue is not fully engaged in the groove. Any material (eg. adhesive) in the joint prevents full engagement of tongue into groove and lateral displacement can occur causing surfaces of adjacent panels to be misaligned. As a result, panel surfaces will not be flush and planimetric differences between panels will occur. This misalignment affects the flushing and finishing of the joint and prevents the desired planimetric continuation of the surfaces of adjacent panels. Fig 5 shows how the prior art deals with this misalignment, whereby panel faces are recessed 13 at joining edges to accommodate jointing tape 14 and a filling material 15 which is applied in excess and then sanded back in an attempt to conceal or disguise any misalignment.
While such a recessed joint may hide the planimetric differences at the joint it cannot correct the planimetric difference between adjacent panels.
Although the invention has been described below with reference to specific embodiments, this description is not meant to be construed in a limiting sense.
4. Object of the invention:
The principal object of this invention is to come out with novel tongue and groove profiles for panel construction. Another object of the invention is to overcome the shortcomings of the existing tongue and groove methodology of using tapered tongue and groove interfaces for location and lateral alignment of panels. The invention proposes novel profiles for the tongue and groove which share a common radius and are semi-circular in shape. 5. Statement of invention
Accordingly the invention provides a tongue and groove profile joint for panel construction which prevents lateral displacement of panels, wherein the tongue and grooves are semi-circular with common radius.
Further according to the invention when the panels are joined the displacement of the centre of the radius of the groove is greater than the tongue which creates a cavity between the apex of the tongue and the trough of the groove, which can be used to accommodate adhesive, thereby maintaining zero lateral displacement of the so joined panels.
Further advantages of this invention will be evident from the detailed description.
6. Description of Figures
The present invention is illustrated with accompanying figures, which are given to illustrate an embodiment of the present invention. These are not intended to be taken restrictively to imply any limitation on the scope of the present invention. Fig 1 illustrates the novel tongue and groove profiles with common diameter 2R, base lines 1 and 2, panel joint faces 3 and 4 center of the radius 5 and 6, parallel parts 7 and 8 displased distance D1 and D2. Fig 2 illustrates the joined panel and groove profile with the cavity.
Fig 3 shows the prior art wherein the tongue and groove of the panel joint is not fully engaged and with a separation distance S between the joint faces of the panels, thereby allowing the surfaces of the adjoining panels to have planimethc displacement 12.
Fig 4 shows this invention wherein the panel joint is separated by the same distance S but resulting in zero planimetric displacement provided S < D2.
Fig 5 illustrates the prior art with misalignment of panels.
7. Detailed description of the invention with reference to the drawings.
THIS INVENTION overcomes the shortcomings of the prior art and also provides additional advantages. This invention employs new profiles for the tongue and groove, both of which share a common radius, semi-circular shape. The common diameter dimension of 2R in Fig 1 for both tongue and groove ensures a zero lateral tolerance between the tongue and groove members at their base lines 1 and 2. The base lines are lines parallel to the panel joint faces 3 and 4, and passing through the centres of the radii 5 and 6 of the tongue and groove members as shown in Fig 1.
The centre points 5 and 6 of the radii of the tongue and groove profiles are marginally displaced from the panel joint faces 3 and 4, thereby providing tongue and groove shapes exhibiting parallel parts 7 and 8, with the parallel parts having a separation dimension equal to the profile diameter of 2R and having lengths D1 and D2 equal to the distances between each joint face 3 and 4, and the centre points of the radii 5 and 6 of the tongue and groove profiles respectively.
The displaced distance D1 of the centre point of the groove radius is marginally greater than the displaced distance D2 of the centre point of the tongue radius, allowing a cavity between the apex 10 of the tongue and the trough 9 of the groove when the tongue is fully engaged in the groove. This cavity 11 in Fig 2 can be used to accommodate adhesive material, or provide a capillary break for prevention of moisture transgression through the joint when the joint is 'dry' assembled (ie. no adhesive).
When the tongue engages the groove to the extent that the parallel portions 7 and 8 of the profiles engage, lateral movement between tongue and groove becomes zero.
This Tongue and groove installation does not have to be fully engaged to eliminate lateral movement of the joint and is thus shown in Fig 4.
As the joint is closed and the tongue is progressively engaged into the groove, the transition in shape from circular to parallel near the panel joint face gradually eliminates to zero the lateral space between tongue and groove. The prior art does not achieve this.
Fig 3 shows the prior art wherein the tongue and groove of the panel joint is not fully engaged and with a separation distance S between the joint faces of the panels, thereby allowing the surfaces of the adjoining panels to have planimethc displacement 12.
Fig 4 shows this invention wherein the panel joint is separated by the same distance S but resulting in zero planimetric displacement provided S < D2.
In the present application, for 50 mm thick panel the tongue and groove profile diameters are both 20mm, which allows a 20 mm diameter solid or tubular spline to be used as a jointing member between two abutting groove profiles. The hollow spline can be used for the location of services (electric, telephone, etc) or to house a holding down bolt or other structural member connecting roof structure to foundation. The splines can be of plastic, metallic or other material.
Other diameters of tongue, groove and spline when used together with common diameters will perform similarly.
A groove edge of a panel can easily be converted to a tongue edge by gluing or otherwise fixing in a spline of same diameter as the groove. The prior art cannot form a tongue profile in this simple fashion. Such splines can be intermittent and need not be continuous.
The tongue and groove edges of the panel are formed by appropriately profiled moulds that are jig held at the perimeter during panel manufacture. These moulds can be made of metallic, plastic, or other material, either fabricated or formed by an extrusion process. Such moulds can have either a tongue or a groove profile, or a combination of both profiles with tongue profile to one face and groove profile to the opposite face, thereby allowing the use of the mould to simultaneously form both tongue and groove profiles in the edges of adjacent panels during manufacture.
The lightweight building panel comprising a lightweight foraminous cementious core bonded cementiously to surface layers of fibre reinforced cement or other sheet material of desired length and thickness.
The dimensions mentioned are to illustrate as examples and are not limiting factors of this disclosure.

Claims

CLAIMSI Claim,
1. The tongue and grove joint for panel type construction which prevents lateral displacement of panels at the joint, achieved by semicircular shaped tongue and groove members of common radius whose centre of radius are displaced from the panel jointing faces so that straight parallel parts are formed at the base of the tongue and groove interface when the panels are pushed together to join them.
2. The tongue and groove profiles as claimed above wherein the displacement of the centre of radius of the groove member from the joint face is greater than the displacement of the centre of radius of the tongue member from the joint face, thereby creating a cavity space between the apex of the tongue and the trough of the groove while simultaneously maintaining zero lateral displacement of the panels being joined.
3. A variation of the tongue and groove profiles as claimed above wherein panels having groove members can be similarly joined by an inserted spline of the same diameter as the groove while simultaneously achieving zero lateral displacement of the panels being joined.
4. The tongue and groove profiles as claimed above wherein the tongue and groove and/or spline members are discontinuous and/or in short lengths.
5. The jointing system as claimed above employ tongue and groove profiles formed by accurate moulds applied at the perimeter of the panels during panel manufacture.
6. The tongue and groove profiles as claimed above wherein the perimeter moulds are fabricated or extruded in metallic, plastic or other material and have either tongue, groove or both profiles whereby a single mould can be utilised to form profiles simultaneously in adjacent panels during manufacture.
PCT/IB2010/051363 2009-03-30 2010-03-29 Light weight concrete sandwich panels WO2010113105A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NZ596127A NZ596127A (en) 2009-03-30 2010-03-29 Light weight concrete sandwich panels
AU2010231563A AU2010231563A1 (en) 2009-03-30 2010-03-29 Light weight concrete sandwich panels

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN730CH2009 2009-03-30
IN730/CHE/2009 2009-03-30

Publications (2)

Publication Number Publication Date
WO2010113105A2 true WO2010113105A2 (en) 2010-10-07
WO2010113105A3 WO2010113105A3 (en) 2012-03-01

Family

ID=42828774

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2010/051363 WO2010113105A2 (en) 2009-03-30 2010-03-29 Light weight concrete sandwich panels

Country Status (3)

Country Link
AU (1) AU2010231563A1 (en)
NZ (1) NZ596127A (en)
WO (1) WO2010113105A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015116955A1 (en) * 2014-01-31 2015-08-06 Vanhoose Jeff Precast concrete wall and method
US10422133B2 (en) 2015-01-30 2019-09-24 Innovative Design Solutions Llc Precast concrete composite wall

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB590923A (en) * 1945-04-04 1947-07-31 Fred Dyson Beanland Improvements in or relating to building blocks and the like
FR2221036A5 (en) * 1973-03-06 1974-10-04 Cluzel Entreprise Precast construction blocks and assembly method - blocks fit together by mortice and tenon joints and locking rods
GB2117813A (en) * 1982-04-06 1983-10-19 Leonid Ostrovsky Pivotal assembly of insulated wall panels
EP0092040B1 (en) * 1982-02-23 1986-05-21 Dieter Jensen Structural heat-insulating web with a latching device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB590923A (en) * 1945-04-04 1947-07-31 Fred Dyson Beanland Improvements in or relating to building blocks and the like
FR2221036A5 (en) * 1973-03-06 1974-10-04 Cluzel Entreprise Precast construction blocks and assembly method - blocks fit together by mortice and tenon joints and locking rods
EP0092040B1 (en) * 1982-02-23 1986-05-21 Dieter Jensen Structural heat-insulating web with a latching device
GB2117813A (en) * 1982-04-06 1983-10-19 Leonid Ostrovsky Pivotal assembly of insulated wall panels

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015116955A1 (en) * 2014-01-31 2015-08-06 Vanhoose Jeff Precast concrete wall and method
US11077583B2 (en) 2014-01-31 2021-08-03 Envirocast, Llc Precast concrete wall and method
US10422133B2 (en) 2015-01-30 2019-09-24 Innovative Design Solutions Llc Precast concrete composite wall

Also Published As

Publication number Publication date
WO2010113105A3 (en) 2012-03-01
NZ596127A (en) 2014-04-30
AU2010231563A1 (en) 2011-11-17

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