EP2276897A1 - Cloison, plafond ou revêtement d'isolation acoustique pare-feu - Google Patents

Cloison, plafond ou revêtement d'isolation acoustique pare-feu

Info

Publication number
EP2276897A1
EP2276897A1 EP09807627A EP09807627A EP2276897A1 EP 2276897 A1 EP2276897 A1 EP 2276897A1 EP 09807627 A EP09807627 A EP 09807627A EP 09807627 A EP09807627 A EP 09807627A EP 2276897 A1 EP2276897 A1 EP 2276897A1
Authority
EP
European Patent Office
Prior art keywords
porous material
gypsum
insulating system
insulating
partition
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.)
Withdrawn
Application number
EP09807627A
Other languages
German (de)
English (en)
Inventor
Emmanuel Valenti
Cyrille Demanet
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.)
Lafarge Gypsum International SAS
Original Assignee
Lafarge Gypsum International SAS
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
Priority claimed from EP08356150A external-priority patent/EP2196589A1/fr
Priority claimed from EP09356039A external-priority patent/EP2273023B1/fr
Application filed by Lafarge Gypsum International SAS filed Critical Lafarge Gypsum International SAS
Priority to EP09807627A priority Critical patent/EP2276897A1/fr
Publication of EP2276897A1 publication Critical patent/EP2276897A1/fr
Withdrawn legal-status Critical Current

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
    • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
    • E04B2/7407—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts
    • E04B2/7409—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts special measures for sound or thermal insulation, including fire protection
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
    • C04B28/144—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/88—Insulating elements for both heat and sound
    • E04B1/90—Insulating elements for both heat and sound slab-shaped
    • 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
    • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
    • E04B2/7407—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts
    • E04B2/7409—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts special measures for sound or thermal insulation, including fire protection
    • E04B2/7411—Details for fire protection
    • 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
    • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
    • E04B2/7407—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts
    • E04B2/7453—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts with panels and support posts, extending from floor to ceiling
    • E04B2/7457—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts with panels and support posts, extending from floor to ceiling with wallboards attached to the outer faces of the posts, parallel to the partition
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00603—Ceiling materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the subject of the present invention is an insulating system, in particular an acoustic, fire-resisting, insulating system as for example partition, ceiling or lining.
  • partitions, ceilings or linings comprise a frame, at least one board cladding (most preferably plasterboard), fixing components, and an absorbent material for insulation purpose, in particular for acoustic purpose.
  • the said absorbent material is placed inside the cavity created by the frame and the boards
  • the fire-resisting behaviour of partitions is well known and usually described by the board cladding and the absorbent material in the cavity.
  • the said board cladding and absorbent materials are usually used to insulate and prevent heat transfer from one side to another side of the partition.
  • the technical devices are more difficult to be placed and may compress the absorbent material hence reducing its contribution to acoustic insulation but also this absorbent may cause conduction of vibration from technical device to the cladding; - a risk of poor installation exists; the absorbent material may fall inside the cavity if a poor hanging is made, time wise.
  • the solution proposed by the invention is an insulating system having a multi layer panel on each side of a frame or on one side of a frame, wherein the said panel comprises
  • the system according to the invention provides a system with total thickness comparable to prior art. That means that the difference of thickness between the system of the invention and the system of the prior art is atmost 15 mm.
  • the system according to the invention provides a system with total weight comparable to prior art, that means that the difference of weight between the system of the invention and the system of the prior art is atmost 2 kg/m 2 .
  • the system according to the invention provides a lightweight system comparable to prior art.
  • the system according to the invention is mineral wool free and eliminates any risk that could be attached to the manipulation fibrous components during installation.
  • the system according to the invention provides less installation failure risks.
  • system according to the invention could performs in term of insulation equally to system of prior art.
  • system an assembly of at least one panel and at least one frame, like for example partition, ceiling, floor or lining.
  • panel By the expression “panel”, it is understood a panel (or board) generally comprising at least one facer material having a certain tensile strength, like paper, covering a core based on a set hydraulic binder, notably cementitious porous material.
  • multi layer panel By the expression “multi layer panel”, it is understood a multi layer panel having different layers of materials with different properties, typically an airtight properties for the most outer layer to cavity and porosity properties for the most inner layer to cavity.
  • the term « porosity » means the ratio between the total of the volume induced by the presence of air voids and the volume resulting from the evaporation of water (water voids) to the total bulk volume. Consequently the porosity values take into account the airs voids and the water voids.
  • a porosity of 0 means that there are non air voids or water voids inside the material.
  • a porority of 0,80 means that 80% of the volume is provided by the air voids or water voids of the material.
  • air voids By the expression “air voids”, it is understood air voids that may be created when air is injected into a slurry.
  • water voids it is understood water voids created when water of convenience is dried out.
  • airtight it is understood according to the invention having a specific air flow resistance higher than 200 001 N.s.m “3 .
  • the specific air flow resistance is measured according to the standard test method ISO 9053.
  • the cavity may comprise air, this air is preferably in direct contact with the porous material.
  • An example of cavity is provided on figure 2, where the cavity is the space left free where the studs are located.
  • substrate By the expression “substrat”, it is understood according to the invention floors, concrete floors, timber joist floors or others usual floors, and also walls like concrete walls, wood walls or masonery walls.
  • R w + c the Weighted Sound Reduction Index, showing the ability of a wall or other building structure to provide sound insulation.
  • the R w + c has been measured in an acoustic testing laboratory according to the following method EN ISO 140 part3 - Standard Test
  • fire-resisting it is understood according to the invention a system having fire-resisting properties, especially an Integrity Insulation (El) value of at least 30 minutes.
  • the invention is an insulating system having a multi layer panel on each side of a frame or on one side of a frame, wherein the said panel comprises
  • At least one cementitious porous material being the most inner layer to cavity, having a porosity from 0,80 to 0,95, and having a density from 150 to 450 kg / m 3 .
  • the insulating system according to the invention may have a cementitious porous material having a porosity from 0,85 to 0,90.
  • the insulating system according to the invention may have a cementitious porous material having a Young's Modulus in flexion from 0,1 GPa to 10 GPa, preferably from 0,1 GPa to 5 GPa, more preferably 0,1 GPa to 3 GPa.
  • the insulating system according to the invention may have a cementitious porous material having a compressive strength of at least 0,3 MPa, preferably of at least 0,5 MPa, more preferably of at least 0,7 MPa.
  • the insulating system according to the invention may have a cementitious porous material having a minimum thickness of 10 mm, preferably of a least 12 mm, more preferably of at least 15 mm and even more preferably of at least 18 mm and even even more preferably of at least 25 mm.
  • the insulating system according to the invention may have a working thickness of the cavity (Tw) determined as follow :
  • Tw > 1.4 Ta with Ta being the apparent thickness of the cavity (see figure 1 or 2).
  • the system according to the invention provides fire-resistance.
  • the insulating system of the invention may provide especially an Integrity Insulation (El) value of at least 30 minutes, preferably of at least 45 minutes and more preferably at least 60 minutes and even more preferably of at least 90 minutes.
  • El Integrity Insulation
  • the frame suitable for the insulating system of the invention are all frames available for partitions, ceilings or linings, like for example studs, made of steel or wood.
  • the system according to the invention may be airtight.
  • the airtight material suitable for the insulating system of the invention could be an airtight facer.
  • an airtight facer suitable according to the invention may be a paper made facer being airtight or a non woven facer.
  • the airtight material suitable for the insulating system of the invention could be an airtight coating.
  • an airtight material suitable according to the invention may be a skimming coat or finishing coat.
  • the said skimming coat can be made for instance with a standard readymix compound applied at 300gr/m 2 , like for instance the
  • the invention provides an insulating system having a multi layer panel on each side of a frame or on one side of a frame, wherein the said panel comprises at least a skimming coat, the said skimming coat being located on the side opposite to the inner layer to cavity, more preferably the outer side; and at least one gypsum porous material being the most inner layer to cavity.
  • a skimming coat located on the side opposite to the inner layer to cavity, more preferably the outer side
  • at least one gypsum porous material being the most inner layer to cavity.
  • the airtight material suitable for the insulating system of the invention could be a board like any known cementitious boards, any known cementitious board available for partitions, any known gypsum boards, any known gypsum board available for partitions, ceilings or linings, as well as perforated acoustic board (such as sold under the commercial name Pregybel) or laminated boards.
  • the preferred board is a heavy thin dense board, having a density of 1.2, and a thickness of 10 mm.
  • the insulating system of the invention comprises a multi layer panel wherein the said panel comprises - at least one airtight material being the most outer layer to the cavity;
  • the insulating system of the invention comprises a multi layer panel wherein the said panel comprises
  • the said airtight material and the said cementitious porous material may be one multi dense board.
  • An example of such a multi dense board is shown on figure 3, with for example a first layer having a density of 0,7 to 0,9 (the airtight material) and a second layer having a density of 0,3 to 0,5 (the cementitious porous material).
  • the invention may be an insulating system having a multi layer panel on each side of a frame, the said system being used as a partition.
  • the insulating system may be an acoustic insulating partition.
  • the system according to this embodiment may be an insulating partition, having a multi layer panel on each side of a frame, wherein the said panel comprises at least one board and at least one cementitious porous material being the most inner layer to cavity.
  • the system according to this embodiment provides an improvement of at least 5 dB expressed in R w + c , preferably at least 10 dB, and more preferably of at least 15 dB.
  • the system according to this embodiment of the invention may comprise as porous material the composition suitable as gypsum porous material described below.
  • the system according to this embodiment of the invention may be an fire- resistant insulating partition.
  • the invention may be an insulating system having a multi layer panel on one side of a frame, the said system being used as a ceiling or a lining.
  • the invention provides a ceiling or lining having a multi layer panel on one side of a frame, wherein the said panel comprises at least one board and at least one cementitious porous material being the most inner layer to cavity.
  • the system according to this embodiment provides an improvement of at least 5 dB expressed in R w + c , preferably at least 10 dB, and more preferably of at least 15 dB.
  • the system according to this embodiment of the invention may comprise as porous material the composition suitable as gypsum porous material described below.
  • the invention provides an insulating system having a multi layer panel on each side of a frame or on one side of a frame, wherein the said panel comprises at least one airtight material and at least one cementitious porous material being the most inner layer to cavity, said cementitious porous material comprising at least one facer material.
  • the facer materials also named liner or paper could be those that are used in the art in a conventional manner.
  • the facer may be air permeable paper.
  • the facer material may be a non-woven mat, preferably a glass mat or a mat formed of other fibers (e.g. synthetic fibers or a mixture of cellulosic fibers and synthetic fibers).
  • the cementitious porous material may penetrate partly in the facer, fully, or the facer may even be embedded in the cementitious core.
  • the stiffness of the facer should preferably be such that a load of at least 1 kN, preferably of at least 2 kN, more particularly of at least 3,4 kN is obtained at 1% elongation on a 50 mm wide by 280 mm long sample in tension.
  • the liner used is FF 0,55/6 supplied by Johns Manville. This liner is a non-woven glass mat of 8 ⁇ m fibers adhered together by 20 g/m 2 of a blend of acrylic and polyvinyl alcohol polymers. A coating of 15 to 30 g/m 2 of an acrylic resin binder was applied to the boards after the dryer.
  • the cementitious porous material suitable for the insulating system of the invention may be, among others possibilities, a composition as described in detail below.
  • the said composition suitable as cementitous porous material according to the invention may be a composition comprising at least a set hydraulic binder; and - a foaming agent and having a porosity ⁇ 0,80; an air flow resistivity between 10 000 and 3 000 000 N.s.m “4 ; a tortuosity between 1.2 and 3.4; - a viscous characteristic length between 10 ⁇ m and 60 ⁇ m; a thermal characteristic length between 60 ⁇ m and 1500 ⁇ m.
  • the cementitious porous material suitable for the insulating system of the invention may have an air flow resistivity between 10 000 and 3 000 000 N.s.m "4 .
  • the composition suitable as cementitious porous material according to the invention comprises a set hydraulic binder.
  • the set hydraulic binder is a material that will set with water like for example Original Cement Portland or hydratable calcined gypsum.
  • it is a hydratable calcined gypsum, referred to as plaster, stucco, calcium sulfate hemi hydrate, or calcium sulfate semi-hydrate (or alternatively anhydrite).
  • the source of the gypsum before it is calcined by any method known to one skilled in the art may be natural or synthetic production of gypsum, synthetic production of gypsum is preferred.
  • Hydratable calcined gypsum material is generally a fine-grained powder with a median particle size in the range of 5 to 100 ⁇ m.
  • Specific embodiments of the composition suitable as gypsum porous material according to the invention are particularly designed for quick-setting hydraulic binder, having a setting time of less than 30 min, preferably less than 20 min, more preferably less than 10 min.
  • One of the most preferred set hydraulic binder for use in the present composition of the invention is hydratable flue gas desulfurization (FGD) plaster.
  • FGD flue gas desulfurization
  • FGD plaster The advantages of FGD plaster are among others higher purity, more uniform and finer particles size, lighter color and no abrasive particles. Higher purity results in more set hydraulic binder per unit weight for generally improved strength over natural gypsum plaster of lower purity. More uniform finer particles are completely calcined for a more uniform setting time. Lighter color is more aesthetically pleasing. The lack of abrasive particles in the gypsum plaster causes less wear on conveying equipment and mixer parts.
  • any additive classically used in the art could also be used in the instant composition suitable as cementitious porous material according to the invention, in particular additives like thickeners or viscosity modifiers or fluidizers but not limited to them.
  • additives like thickeners or viscosity modifiers or fluidizers but not limited to them.
  • the range of additives is very wide as will be appreciated by the skilled person.
  • the insulating system according to the invention has a cementitious porous material being a gypsum porous material.
  • the gypsum porous material suitable for the insulating system of the invention may be a composition as described in detail above with hydratable calcined gypsum as hydraulic binder.
  • the composition suitable as gypsum porous material according to the invention may comprise water.
  • the final water-to-plaster (W/P) ratio in the composition suitable as gypsum porous material according to the invention prior to setting is preferably comprised between 0.3 and 0.9, more preferably between 0.45 and 0.75 and most preferably between 0.55 and 0.65.
  • the composition suitable as gypsum porous material according to the invention may comprise a foaming agent.
  • foaming agent any suitable compound or any surfactant able to foam a composition comprising a hydraulic binder.
  • Suitable foaming agents according to the invention are preferably non-ionic foaming agents having a hydrophilic / lipophilic balance, namely HLB, from 5 to 18, preferably from 7 to 15, more preferably from 9 to 13.
  • Suitable foaming agents according to the invention are preferably alkylpolysaccharides.
  • Alkylpolysaccharides as foaming agents suitable for the invention are those having a hydrophobic group containing from 8 to 22 carbon atoms, preferably from about 10 to about 16 carbon atoms, most preferably from 12 to 14 carbon atoms, and a polysaccharide hydrophilic group containing from 1 to 10, saccharide units (e.g., galactoside, glucoside, fructoside, glucosyl, fructosyl and/or galactosyl units).
  • alkylpolysaccharides as foaming agents suitable for the invention are alkylpolyglucosides having from 4 to 22, preferably from 4 to 16, more preferably from 8 to 12 carbon atoms.
  • composition suitable as gypsum porous material according to the invention comprises, as preferred foaming agent, glycoside compound (which is also meant to cover mixtures of several glycoside compounds).
  • glycoside compound means any chemical compound comprising a sugar part (glycone) bound to a non-sugar part (aglycone).
  • the glycone may comprise one or more sugar units. If more than one unit is present on average, the glycoside compound may be termed polyglycoside.
  • the glycoside compound may be a (poly)fructoside compound (if the glycone is based on fructose), a (poly)galactoside compound (if the glycone is based on galactose), a (poly)glucoronide compound (if the glycone is based on glucuronic acid) etc.
  • the glycoside compound is a glucoside or polyglucoside, i.e. a glycoside based on glucose.
  • the glycoside compound may also be an alkylpolysaccharide having the general formula RO(R 1 O) t Z x as defined in US 4,565,647 on col.1, 1.36-55, and more particularly an alkylpolysaccharide as described in US 4,565,647 on col.2, l.25-col.3, 1.57, notably a compound having the general formula R 2 O(C n H 2n O) 4 (Z) x .
  • the general formula of the foaming agent is : R-O-(C 6 Hi 0 O 5 ) n -OH wherein R is an alkyl group with 4 to 22 carbon atoms; and n is an integer from 1 to 3, preferably 1 to 2.
  • R is an alkyl group with 8 to 12 carbon atoms.
  • the foaming agent has the following formula:
  • n is an integer from 1 to 3, preferably from 1 to 2.
  • Molecules made by Cognis in the GLUCOPON family are particularly well-suited, notably GLUCOPON 600 CSUP or GLUCOPON 215 CS UP.
  • foaming agents useful for the invention are alkylpolyglucosides, beta ⁇ nes, amine oxydes, alkylpolysaccharides, alkylethersulfates, ethoxylated alcohols, alkylsulfonates, alkylsulfosuccinates.
  • Foaming agent sold by Huntsman like alkylethersulfates, in particular the
  • composition suitable as gypsum porous material according to the invention comprises preferably from 0.1 to 2.0 wt% (% by weight of the weight of the hydraulic binder) of alkylethersulfates (which is also meant to cover mixtures of several alkylethersulfates compounds), particularly from 0.25 to 0.8 wt% alkylethersulfates, more particularly from 0.30 to 0.60 wt% alkylethersulfates, and preferably from 0.35 to 0.50 wt% alkylethersulfates (% by weight of the weight of the set hydraulic binder).
  • alkylethersulfates which is also meant to cover mixtures of several alkylethersulfates compounds
  • alkylethersulfates which is also meant to cover mixtures of several alkylethersulfates compounds
  • the glycoside compound mentioned above is the sole foaming agent or surfactant used in the composition suitable as gypsum porous material according to the invention.
  • the composition suitable as gypsum porous material according to the invention preferably does not substantially comprise any other foaming agent or surfactant.
  • the glycoside compound represents more than 90% of any surfactant composition, advantageously more than 95%, by weight.
  • composition suitable as gypsum porous material according to the invention comprises preferably from 0.1 to 2.0 wt% (% by weight of the weight of the hydraulic binder) of the glycoside compound (which is also meant to cover mixtures of several glycoside compounds), particularly from 0.25 to 0.8 wt% glycoside compound, more particularly from 0.30 to 0.60 wt% glycoside compound, and preferably from 0.35 to 0.50 wt% glycoside compound (% by weight of the weight of the set hydraulic binder).
  • composition suitable as gypsum porous material according to the invention may also comprise aggregates and/or fillers and/or others inorganic materials.
  • fillers are FGD gypsum, fumed silica, fly ash, blast furnace slag, micro-silica and fine limestone.
  • likely aggregates are lightweight vermiculite, silica, limestone sand, perlite, micro-spheres, and expanded shale.
  • Additives influencing the behavior of the composition suitable as gypsum porous material according to the invention like retarders/accelerators pairs are advantageously used in the present invention.
  • An example of a retarder/accelerator pair is conventional protein plaster retarder/ball milled accelerator (BMA).
  • any additive classically used in the art could also be used in the instant composition suitable as gypsum porous material according to the invention, in particular additives like thickeners or viscosity modifiers or fluidizers but not limited to them.
  • the range of additives is very wide as will be appreciated by the skilled person.
  • An other instance additive could be an additive that increases the adhesion of a facer, especially paper facer, like starch.
  • Resins for the improvement of the mechanical and/or aesthetic properties can be added to the composition suitable as gypsum porous material according to the invention.
  • resins beneficial alone or in combination are: polyacrylamide polyacrylic, polyvinylalcohol, fluoropolymer and mixtures thereof. These types of resins can by combined in copolymers or other combinations, e.g. as styrene- butadiene copolymers, styrene-acrylate copolymers, vinyl-acetate-ethylene copolymers and acrylate copolymers.
  • the composition suitable as gypsum porous material according to the invention may also comprise a thickener (also named stabilizing agent).
  • the thickener may be effective by increasing the viscosity of the water in the matrix, or by stabilizing the bubble formation by the foaming agent.
  • polyvinyl alcohol is a suitable bubble stabilizing agent.
  • the composition suitable as gypsum porous material according to the invention may also comprise a viscosity modifier like for example a water-soluble viscosity modifier. Examples are polymers (cellulosic, polyalcohol, polyurethane, polyester, polyether, polyacrylic, co- and terpolymers thereof), clay (modified/natural), fumed silica, hydrophobically-modified or surface-modified additives.
  • composition suitable as gypsum porous material according to the invention may comprise a fluidizer which is usefully incorporated into the gypsum slurry in order to minimize the water to calcined gypsum ratio.
  • a fluidizer also referred to as a water- reducing agent or a plasticizer
  • Some examples of such fluidizer are carboxylate compounds such as polycarboxylate ethers.
  • Preferred additives are polycarboxylate ethers or the like.
  • composition suitable as gypsum porous material according to the invention may comprise a blocking agent which is preferably incorporated into the slurry in order to stop the setting of hydraulic binder with water.
  • a blocking agent is also referred to as a calcium sequestering agent and may also serve as a water-reducing agent in the aqueous gypsum slurry to increase the flow of the slurry. Any suitable product with a calcium sequestering functionality can be used.
  • Blocking agents are typically used with unblocking agent in a pair. Examples of typical blocking unblocking pairs are sodium polyacrylate/aluminum sulfate and sodium phosphonate/zinc sulfate.
  • the present composition suitable as gypsum porous material according to the invention may be practiced in the absence of fibers.
  • the absence of fibers means that the amount could be less than 0.01% by weight (% by weight of the weight of the set hydraulic binder), preferably less than 0.001% (only unintended impurities) and preferably no fiber will be present at all.
  • a fiber is any fiber typically used in the art. "In the absence of fibers" does not exclude the presence of cellulosic material, especially originating from reclaim material, as is typically used in the instant field.
  • the composition suitable as gypsum porous material according to the invention does not comprise fibers.
  • the composition suitable as gypsum porous material according to the invention may have a volume of air voids incorporated into the composition in order to absorb sound.
  • the quantity of air voids may come from two sources, water voids created when water of convenience is dried out of the composition and air voids that may be created when air is injected into the slurry.
  • the water voids may be smaller than the air voids and may have a slight contribution to sound absorption at higher frequencies and at higher water-to-plaster ratio.
  • the air voids may be larger than the water voids, and may tend to be interconnected which may allow the composition suitable as cementitious porous material according to the invention to absorb sound.
  • the composition suitable as gypsum porous material according to the invention may have a porosity (as defined below) ⁇ 0.55; - a airflow resistivity between 10 000 and 3 000 000 N.s.m "4 ; a tortuosity between 1.2 and 3.4; a viscous characteristic length between 10 ⁇ m and 60 ⁇ m; a thermal characteristic length between 60 ⁇ m and 1500 ⁇ m.
  • the porosity is ⁇ 0.70; the air flow resistivity is between 50 000 and 2 500 000 N.s.m “4 ; the tortuosity is between 1.3 and 2.5; - the viscous characteristic length is between 15 ⁇ m and 50 ⁇ m; the thermal characteristic length is between 70 ⁇ m and 500 ⁇ m.
  • the porosity is ⁇ 0.76; - the air flow resistivity is between 100 000 and 2 000 000 N.s.m- 4 ; the tortuosity is between 1.4 and 2.3; the viscous characteristic length is between 15 ⁇ m and 40 ⁇ m; the thermal characteristic length is between 80 ⁇ m and 300 ⁇ m.
  • Flow resistivity is thus equal to the ratio of the air pressure over the flow rate times the sample surface divided by the sample thickness: flow resistivity is measured according to the standard test method ISO 9053.
  • tortuosity means the complexity of the internal structure of the material; thermal characteristic length characterizes the heat exchange between the air and the rigid frame. This is a measure of the effective size of the pores involved in the heat exchange. For gypsum cores, this is directly related to the bubble size.
  • viscous characteristic length characterizes the viscous interaction of the air with the stiff frame. This is a measure of the effective size of the pores involved in the viscous interaction. For gypsum cores, this is directly related to the size of the interconnections between the air voids.
  • the composition suitable as cementitious porous material according to the present invention may have a density comprised between 150 and 450 kg/m 3 , particularly between 320 and 420 kg/m 3 , more particularly between 340 and 380 kg/m 3 , preferably 350 and 360 kg/m 3 , more equal to
  • composition suitable as cementitious porous material according to the invention has sound-absorbing properties.
  • composition suitable as cementitious porous material according to the invention may have a sound absorption average (SAA) of at least 0.3, preferably at least 0.5, most preferably at least 0.6 as measured by modified ASTM E1050 - 98.
  • SAA sound absorption average
  • FIGURES are a diagrammatic representation of FIGURES.
  • the figure 1 provides one embodiment of the acoustic insulating system according to the prior art.
  • the figure 2 provides one embodiment of the acoustic insulating system according to the invention, where C represents a stud, A represents any known gypsum board and B represents a panel comprising the composition according to the invention.
  • the figure 3 provides an insulating system according to the the invention with a multi dense board.
  • the figure 4 provides an insulating system according to the third embodiment of the invention.
  • Example 1 production a composition suitable as gypsum porous material according to the invention: In a stirred tank (primary mixer), a slurry was prepared using the following ingredients:
  • Coatex TP169 polyacrylate blocking agent, obtained from Coatex
  • BMA Ball milled accelerator
  • Optima 100 phosphonate fluidizer obtained from Chryso
  • Vinnapas CEF52W vinyl acetate resin obtained from Wacker
  • the mean concentration of the active material contained in the slurry is thus 0.11%.
  • the primary slurry then entered a Mondomix® air mixer, [type of machine: minimondo H1776, capacity 5-50kg/hr distributed by Haas Mondomix (secondary mixer)] rotating at 450 rpm, where air was introduced at a flow rate of 1.5 L/min to 2.5 L/min so that foaming took place.
  • Mondomix® air mixer [type of machine: minimondo H1776, capacity 5-50kg/hr distributed by Haas Mondomix (secondary mixer)] rotating at 450 rpm, where air was introduced at a flow rate of 1.5 L/min to 2.5 L/min so that foaming took place.
  • the foamed slurry was then transported to a tertiary mixer where a solution of aluminum sulfate (unblocking agent) was added and continuously mixed to the foamed slurry.
  • the solution of aluminum sulfate was prepared with 85 g of aluminum sulfate powder, at an active content of 150 g/kg.
  • the injection rate was 27 g/min.
  • the tertiary mixer was a 30-cm long vertical static mixer having a 20-mm diameter, based on a Kenics ® geometry. At the outlet of the mixer, the slurry was directly deposited on a liner and a second liner was applied on top of the slurry and it was allowed to set. The distance between the tertiary mixer and the liner was 10 cm.
  • the liner used was FF 0.55/6 supplied by Johns Manville. This liner is a non- woven glass mat of 8 ⁇ m fibers adhered together by 20 g/m 2 of a blend of acrylic and polyvinyl alcohol polymers. A coating of 15 to 30 g/m 2 of an acrylic resin binder was applied to the boards after the dryer.
  • Example 2 production a composition suitable as gypsum porous material according to the invention:
  • a powder premix was continuously introduced at a flow rate of 1 kg/min.
  • the powder premix was composed of: gypsum hemi-hydrate from the Ottmarsheim factory (France) so that the water to plaster ratio is 0.58; and 1 g Ball milled accelerator (BMA, see above) per kg of gypsum hemihydrate.
  • the K 2 SO 4 aims at providing acceleration of the final set and hardening.
  • the W/P ratio was 0.58.
  • a strength reinforcement solution could be added if necessary.
  • the setting time was comprised between 6.5 minutes and 7.5 minutes (based on the knife test), otherwise it could be adjusted by varying the quantity of Plastretard. If the Gilmore test indicated a setting time of less than 9 minutes, K 2 SO 4 could be adjusted accordingly.
  • the slurry thus prepared exited the primary mixer and was continuously transferred to the top of a cylindrical tank having a 20 mm diameter and a 200 mm height.
  • the slurry was then continuously pumped at the bottom of the tank at a flow rate of 1 L/min in a tube so that the amount of material in the tank remained constant.
  • the average passing time in the tank was less than 5 seconds and the residence time distribution was narrow (95% of the slurry leaved the tank less than 10 seconds after entering the tank), as was measured by dyes concentration evolution techniques.
  • the concentration in active material is thus about 0.3% by weight relatively to the gypsum hemihydrate.
  • the primary slurry then entered a Mondomix® air mixer (secondary mixer) rotating at 300-500 rpm (400-450 rpm being preferred), where air was introduced at a flow rate of 2.5 L/min so that foaming took place.
  • the foamed slurry was deposited on a liner where it was allowed to set after the addition of a second liner on the top.
  • the distance between the air mixer and the liner was less than 10 cm and the direction of the deposition was horizontal.
  • the liner used was FF 0.55/6 supplied by Johns Manville. This liner is a non- woven glass mat of 8 ⁇ m fibers adhered together by 20 g/m 2 of a blend of acrylic and polyvinyl alcohol polymers.
  • Example 3 partition having a single layer fast on each side of a frame
  • a frame used is a 36 mm tracks in the form of a U installed horizontally on the top and the bottom of a partition.
  • the frame used is a 34.8 mm studs in the form of a C studs, arranged in the tracks at 600-mm centres.
  • One each side of C studs were fixed one boards, a 18 mm gypsum porous boards obtained according to example
  • the total thickness of the partition was 76.6 mm.
  • the working thickness Tw was equal to 72 mm and the apparent thickness Ta was equal to 34.8 mm.
  • the system according to invention had been compared to traditional partition made with 12.5 mm standard plasterboards and where the cavity was filled with 45 mm glass wool.
  • the total thickness of the partition was 72 mm and the surface mass of each side was 9.2 kg/m 2 .
  • the standard plasterboards were fixed vertically and parallel to a 46 mm studs in the form of a C studs with 35-mm screws at 300mm centres on each side of the framing.
  • the working thickness Tw was equal to 48 mm and the apparent thickness Ta was equal to 48 mm.
  • the airborne sound insulation performance of two partitions were measured in conformity to the standard EN ISO 140-3 ( “Measurement of sound insulation in buildings and of building elements, part 3, Laboratory measurement of airborne sound insulation of building elements” and gave a airborne sound reduction rating of Rw+C 38 dB for the partition with the said porous gypsum and R w+c 36 dB for the traditional partition with glass wool inside the cavity.
  • the airborne sound reduction rating was calculated in accordance to the standard EN ISO 717-1 ( “Rating of sound insulation in buildings and pf building elements, Part 1 airborne sound insulation”).
  • a frame used is a 36 mm tracks in the form of a U installed horizontally on the top and the bottom of the partition.
  • Vertically a frame used is a 34.8 mm studs in the form of a C studs, arranged in the tracks at 600-mm centres.
  • One each side of C studs were fixed one boards, a 25 mm gypsum porous boards obtain according to example 2 with a minimum mass of 9.9 kg/m 2 .
  • the said boards were fixed vertically and parallel to the studs with 35-mm screws at 300mm centres on each side of the framing.
  • a 1 mm thick plaster coating for surface mass of 1 ,1 kg/m 2 was applied in surface being the most outer layer to the cavity.
  • the total thickness of the partition was 88 mm.
  • the working thickness Tw was equal to 86 mm and the apparent thickness Ta was equal to
  • the airborne sound insulation performance of the partitions were measured in conformity to the standard EN ISO 140-3 ("Measurement of sound insulation in buildings and of building elements, part 3, Laboratory measurement of airborne sound insulation of building elements" and gave a airborne sound reduction rating of R w+c 41 dB for the partition with the said porous gypsum.
  • the airborne sound reduction rating was calculated in accordance to the standard EN ISO 717-1 ( “Rating of sound insulation in buildings and pf building elements, Part 1 airborne sound insulation").
  • Example 5 partition having a double layer fast on each side of a frame
  • a frame used is a 36 mm tracks in the form of a U installed horizontally on the top and the bottom of the partition.
  • Vertically a frame used is a 34.8 mm studs in the form of a C studs, arranged in the tracks at 600-mm centres.
  • One each side of C studs were fixed one boards, a 18 mm gypsum porous boards obtain according to example 1 with a minimum mass of 6.7 kg/m 2 .
  • the said boards were fixed vertically and parallel to the studs with 35-mm screws at 600mm centres on each side of the framing.
  • a second layer of a 12.5 mm dense plasterboards with a minimum surface mass of 12.3 kg/m 2 and a Young's modulus between 3 to 7 GPa.
  • the dense boards were fixed vertically and parallel to the studs with 55-mm screws at 300mm centers on each side of the framing.
  • the total thickness of the partition was 97 mm.
  • the working thickness Tw was equal to 72 mm and the apparent thickness Ta was equal to 34.8 mm.
  • the system according to invention had been compared to traditional partition made two layers of a 12.5 mm standard plasterboards and where the cavity was filled with 45 mm glass wool.
  • the total thickness of the partition was 98 mm and the surface mass of each side was 18.4 kg/m 2 .
  • the standard plasterboards were fixed vertically and parallel to a 46 mm studs in the form of a C studs with 35-mm screws at 600mm centres on each side of the framing for the first layer and at 300mm centers on each side of the framing for the second layer.
  • the working thickness Tw equal to 46 mm and the apparent thickness Ta equal to 46 mm.
  • the airborne sound insulation performance of two partitions were measured in conformity to the standard EN ISO 140-3 ("Measurement of sound insulation in buildings and of building elements, part 3, Laboratory measurement of airborne sound insulation of building elements" and gave a airborne sound reduction rating of R w+ c 45 dB for the partition with the said porous gypsum and R w+ c 45 dB for the traditional partition with glass wool inside the cavity.
  • the airborne sound reduction rating was calculated in accordance to the standard EN ISO 717-1 ( "Rating of sound insulation in buildings and pf building elements, Part 1 airborne sound insulation").
  • the resistance to fire was evaluated in accordance to the standard 1363-1 ("Fire resistance tests - Part 1: General requirements »).
  • the traditional system with glass wool inside the cavity gave a Fire insulation and Fire Integrity (El) of 60 minutes in accordance to the standard EN 1364-1 ("Fire resistance tests for non-load bearing elements. Part 1 Walls) .
  • the partition with the said porous gypsum obtained an El of 90 minutes.
  • Example 6 partition having a double layer fast on each side of a frame
  • a frame used is a 36 mm tracks in the form of a U installed horizontally on the top and the bottom of the partition.
  • Vertically a frame used is a 34.8 mm studs in the form of a C studs, arranged in the tracks at 600-mm centres.
  • One each side of C studs were fixed one boards, a 25 mm gypsum porous boards obtain according to example 2 with a minimum mass of 9.5 kg/m z .
  • the said boards were fixed vertically and parallel to the studs with 35-mm screws at 600mm centers on each side of the framing.
  • a second layer of a 10 mm dense plasterboards with a minimum surface mass of 11.8 kg/m 2 and a E modulus between 3 to 7 GPa.
  • the dense boards were fixed vertically and parallel to the studs with 55-mm screws at 300mm centers on each side of the framing.
  • the total thickness of the partition was 106 mm.
  • the working thickness Tw was equal to 86 mm and the apparent thickness Ta equal to 34.8 mm.
  • the airborne sound insulation performance of two partitions were measured in conformity to the standard EN ISO 140-3 ("Measurement of sound insulation in buildings and of building elements, part 3, Laboratory measurement of airborne sound insulation of building elements" and gave a airborne sound reduction rating of R w+ c 47 dB for the partition with the said porous gypsum.
  • the airborne sound reduction rating was calculated in accordance to the standard EN ISO 717-1 ( “Rating of sound insulation in buildings and pf building elements, Part 1 airborne sound insulation").

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  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
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  • Acoustics & Sound (AREA)
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Abstract

L'invention concerne un système d'isolation comprenant un panneau multicouche (A, B) sur chaque côté d'un cadre ou sur un seul côté d'un cadre, dans lequel ledit panneau comprend au moins une matière étanche à l'air et au moins une matière poreuse bitumineuse (B) qui constitue la couche la plus intérieure de la cavité, et qui présente une porosité comprise entre 0,80 et 0,95, et une densité comprise entre 150 et 450 kg/m3.
EP09807627A 2008-12-09 2009-12-04 Cloison, plafond ou revêtement d'isolation acoustique pare-feu Withdrawn EP2276897A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09807627A EP2276897A1 (fr) 2008-12-09 2009-12-04 Cloison, plafond ou revêtement d'isolation acoustique pare-feu

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP08356150A EP2196589A1 (fr) 2008-12-09 2008-12-09 Cloison, plafond ou revêtement d'isolation acoustique ignifuge
EP09356039A EP2273023B1 (fr) 2009-06-10 2009-06-10 Cloison, plafond ou revêtement d'isolation acoustique ignifuge
EP09807627A EP2276897A1 (fr) 2008-12-09 2009-12-04 Cloison, plafond ou revêtement d'isolation acoustique pare-feu
PCT/IB2009/007967 WO2010067210A1 (fr) 2008-12-09 2009-12-04 Cloison, plafond ou revêtement d'isolation acoustique pare-feu

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EP2276897A1 true EP2276897A1 (fr) 2011-01-26

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US11339572B1 (en) 2017-01-23 2022-05-24 Gold Bond Building Products, Llc Method of manufacturing gypsum board with improved fire

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IE49483B1 (en) * 1979-05-30 1985-10-16 Bpb Industries Ltd Production of building board
US4949518A (en) * 1986-06-06 1990-08-21 Westinghouse Electric Corp. Space-dividing wall panel
US6983821B2 (en) * 1999-10-01 2006-01-10 Awi Licensing Company Acoustical panel having a honeycomb structure and method of making the same
US8445101B2 (en) 2007-03-21 2013-05-21 Ashtech Industries, Llc Sound attenuation building material and system
US8397864B2 (en) * 2007-04-24 2013-03-19 Serious Energy, Inc. Acoustical sound proofing material with improved fire resistance and methods for manufacturing same

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