WO1997019810A1 - Panneau pour planchers sureleves - Google Patents

Panneau pour planchers sureleves Download PDF

Info

Publication number
WO1997019810A1
WO1997019810A1 PCT/EP1996/005224 EP9605224W WO9719810A1 WO 1997019810 A1 WO1997019810 A1 WO 1997019810A1 EP 9605224 W EP9605224 W EP 9605224W WO 9719810 A1 WO9719810 A1 WO 9719810A1
Authority
WO
WIPO (PCT)
Prior art keywords
panel
panel according
cement
layer
mix
Prior art date
Application number
PCT/EP1996/005224
Other languages
English (en)
Inventor
Livio Meneghin
Original Assignee
Nesite S.R.L.
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 Nesite S.R.L. filed Critical Nesite S.R.L.
Priority to EP96939929A priority Critical patent/EP0874731A1/fr
Publication of WO1997019810A1 publication Critical patent/WO1997019810A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/02—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material with fibres or particles being present as additives in the layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/04—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B13/06—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/024—Sectional false floors, e.g. computer floors
    • E04F15/02405—Floor panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/24—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2607/00—Walls, panels

Definitions

  • the present invention relates to a panel for raised floors and particularly to the structure of said panel.
  • raised floors are substantially constituted by a metal frame that rests on the original floor and supports modular prefabricated panels of standard sizes, which are arranged side by side.
  • the walking surface of the panels is formed by a covering made of quality material such as wood, carpeting, ceramics, stone, etcetera.
  • the materials used for the load-bearing body of the panels are the most disparate, including chipwood, plaster, cement, etcetera, optionally in combination (to improve the load-bearing capacity if the floor is subjected to flexural stresses caused by pedestrian traffic, the passage of trolleys or the weight of furniture and other static loads) with a steel reinforcing plate a few millimeters thick, the plan dimensions whereof match those of the panel.
  • Pref bricated panels for raised floors having a structure based on cement that is covered at the top at the walking surface have a severe drawback, during their operating life, due to the fact that they slowly but gradually warp, forming a concavity that is directed towards the extrados, i.e., upwards.
  • a principal aim of the present invention is to eliminate the above-described drawback in panels for raised floors having a cement-based structure.
  • a consequent primary object is to provide a panel for raised floors which, despite not having a metal reinforcement plate on the intrados, is capable of withstanding sufficiently high bending stresses and of having a ductile behavior instead of a fragile one as regards bending fracture.
  • Another important object is to provide a panel for raised floors that does not undergo deformations over time, withstands a high concentrated load, and is not penetrated by pressurized water.
  • a panel for raised floors with a structure comprising at least one layer based on cement and polymeric fibers, covered with at least one sheet of aluminum coupled by means of adhesive.
  • figure 1 is a perspective view of a panel according to the invention
  • figure 2 is a sectional enlarged-scale detail view of the panel of figure 1
  • figure 3 is a chart that plots the deflection in mm as a function of time, measured in days, for a panel according to the invention, compared with the one of a panel according to the state of the art.
  • a panel for raised floors according to the invention is generally designated by the reference numeral 10 and has a structure that is substantially composed of two separate layers 11 and 12, both of which are made of cement-like material and polymeric fibers, and is covered with an aluminum sheet 13 which is coupled by means of an adhesive 14.
  • the walking surface is formed by a layer 15 made of quality material, such as wood, carpeting, ceramics, stone, etcetera.
  • the panel 10 is the result of a production process that first of all provides for the production of the cement-based panel and then covers it.
  • first of all cement is mixed with additives, polymeric fibers, and water, so as to obtain a plastic paste.
  • a preferred composition of the mix includes:
  • Mapefluid additive 0.10 kg — water: 1.5 kg.
  • the panel will ultimately constitute said layer 11 of the panel 10.
  • cement is mixed with fibers, inert material, and water, so as to obtain the consistency of moist earth.
  • very fine powder (with a size of substantially less than 1 mm) constituted by ground rock or material recovered from the process of the subsequent gauging step (described hereinafter) ; natural or artificial sand with a density substantially between 1 and 2.7 g/m 3 , with a maximum size of substantially no more than 2 mm.
  • the amount of the ingredients in the second mix can be given, by way of example, as:
  • Moist setting can last a few days at room temperature and can be reduced to 12-16 hours if the temperature is raised to 40-80 degrees Celsius (for example 60 degrees Celsius) .
  • the panel After moist setting, the panel is left exposed to the air for up to approximately 7 days, so as to allow drying, which is usually accompanied by a deformation of the panel caused by differential shrinkage of the two layers 11 and 12, which becomes apparent as a warping of the item.
  • the subsequent step is the gauging of the panel to eliminate deformations.
  • This operation consists in performing the surface abrasion of the panel until a uniform thickness is achieved, obtaining the desired final thickness (for example, as mentioned, 34 mm).
  • the powdered material produced by abrasion can be recycled in the process itself as very fine inert material.
  • the panel When gauging ends, the panel, in addition to having uniform and programmed dimensions, is covered with aluminum sheet 13 in order to make it capable of withstanding a high bending stress (at least 600 kg) applied to one of its extrados edges after placing the panel on four supports at the intrados corners.
  • a high bending stress at least 600 kg
  • the covering operation provides for a first step, in which a very thin layer of adhesive material based on polyurethane resin (for example the commercial product known as Adesilex) is applied to the gauged and set panel in an amount between 40 and 80 kg/m 2 (for example 60 kg/square meter) .
  • a metallic sheet preferably made of aluminum, with a thickness of 50 microns or less, is then applied to the panel treated with the adhesive resin.
  • figure 3 plots the deflection "1" of the central region with respect to the edges of a panel (60 x 60 x 3.4 cm) left exposed to the air for a few months.
  • the chart shows that the cement panel according to the invention (line 16) is considerably more stable and less deformable than a normal cement panel reinforced with a steel plate (line 17).
  • the technical performance of the panel according to the invention can be summarized by a concentrated load of more than 600 kg applied before fracture occurs, 0.5 mm deflection due to warping through exposure to air for two months, penetration of water under pressure (7 bar) lower than, or equal to, 1 mm.
  • the materials employed may be any according to requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Floor Finish (AREA)
  • Laminated Bodies (AREA)

Abstract

Ce panneau pour planchers surélevés comprend au moins une couche (11, 12) à base de ciment et de fibres polymères, que l'on recouvre à l'aide d'au moins une feuille d'aluminium (13), ce couplage s'effectuant au moyen d'un adhésif (14).
PCT/EP1996/005224 1995-11-29 1996-11-25 Panneau pour planchers sureleves WO1997019810A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP96939929A EP0874731A1 (fr) 1995-11-29 1996-11-25 Panneau pour planchers sureleves

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPD95A000229 1995-11-29
IT95PD000229A IT1282210B1 (it) 1995-11-29 1995-11-29 Lastra per pavimenti sopraelevati

Publications (1)

Publication Number Publication Date
WO1997019810A1 true WO1997019810A1 (fr) 1997-06-05

Family

ID=11391183

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/005224 WO1997019810A1 (fr) 1995-11-29 1996-11-25 Panneau pour planchers sureleves

Country Status (4)

Country Link
EP (1) EP0874731A1 (fr)
CN (1) CN1202853A (fr)
IT (1) IT1282210B1 (fr)
WO (1) WO1997019810A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004007193A2 (fr) * 2002-07-16 2004-01-22 James Hardie International Finance B.V. Conditionnement d'articles prefinis en fibrociment
EP1531148A1 (fr) * 2003-11-14 2005-05-18 I.C.R.S. Industrial Ceramic Reinforcement Solution S.r.L. Panneau pour plancher surélevé et procédé de fabrication de ce panneau
US8281535B2 (en) 2002-07-16 2012-10-09 James Hardie Technology Limited Packaging prefinished fiber cement articles

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMO20080330A1 (it) * 2008-12-24 2010-06-25 Mariano Paganelli Procedimento per realizzare piastrelle ad alta resistenza destinate al rivestimento di pavimentazioni e di pareti interne o esterne.
CN110847552B (zh) * 2019-11-01 2021-11-12 山东瑞道地毯有限公司 一种嵌有金属条的木质地毯及其工艺

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2333101A1 (fr) * 1975-11-28 1977-06-24 Ferrer Sayol Maria Element prefabrique pour la realisation de dallages et autres revetements
US4113913A (en) * 1976-05-13 1978-09-12 Rohm And Haas Company Foamed cementitious material and composite
US4441293A (en) * 1980-08-13 1984-04-10 Cape Boards & Panels Limited Construction panels
US4477533A (en) * 1981-10-06 1984-10-16 Scott Bader Company Limited Laminates containing inorganic structural materials

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2333101A1 (fr) * 1975-11-28 1977-06-24 Ferrer Sayol Maria Element prefabrique pour la realisation de dallages et autres revetements
US4113913A (en) * 1976-05-13 1978-09-12 Rohm And Haas Company Foamed cementitious material and composite
US4441293A (en) * 1980-08-13 1984-04-10 Cape Boards & Panels Limited Construction panels
US4477533A (en) * 1981-10-06 1984-10-16 Scott Bader Company Limited Laminates containing inorganic structural materials

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004007193A2 (fr) * 2002-07-16 2004-01-22 James Hardie International Finance B.V. Conditionnement d'articles prefinis en fibrociment
WO2004007193A3 (fr) * 2002-07-16 2004-04-08 James Hardie Res Pty Ltd Conditionnement d'articles prefinis en fibrociment
AU2003256630B2 (en) * 2002-07-16 2009-08-13 James Hardie Technology Limited Packaging prefinished fiber cement products
US8281535B2 (en) 2002-07-16 2012-10-09 James Hardie Technology Limited Packaging prefinished fiber cement articles
US8297018B2 (en) 2002-07-16 2012-10-30 James Hardie Technology Limited Packaging prefinished fiber cement products
EP1531148A1 (fr) * 2003-11-14 2005-05-18 I.C.R.S. Industrial Ceramic Reinforcement Solution S.r.L. Panneau pour plancher surélevé et procédé de fabrication de ce panneau

Also Published As

Publication number Publication date
ITPD950229A1 (it) 1997-05-29
EP0874731A1 (fr) 1998-11-04
CN1202853A (zh) 1998-12-23
ITPD950229A0 (fr) 1995-11-29
IT1282210B1 (it) 1998-03-16

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