EP2273023B1 - Cloison, plafond ou revêtement d'isolation acoustique ignifuge - Google Patents

Cloison, plafond ou revêtement d'isolation acoustique ignifuge Download PDF

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Publication number
EP2273023B1
EP2273023B1 EP09356039A EP09356039A EP2273023B1 EP 2273023 B1 EP2273023 B1 EP 2273023B1 EP 09356039 A EP09356039 A EP 09356039A EP 09356039 A EP09356039 A EP 09356039A EP 2273023 B1 EP2273023 B1 EP 2273023B1
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EP
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Prior art keywords
porous material
gypsum
insulating system
insulating
partition
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EP09356039A
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German (de)
English (en)
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EP2273023A1 (fr
Inventor
Emmanuel Valenti
Cyrille Demanet
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Lafarge Gypsum International SAS
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Lafarge Gypsum International SAS
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Priority to EP09356039A priority Critical patent/EP2273023B1/fr
Priority to ES09356039T priority patent/ES2386330T3/es
Priority to PL09356039T priority patent/PL2273023T3/pl
Priority to EP09807627A priority patent/EP2276897A1/fr
Priority to PCT/IB2009/007967 priority patent/WO2010067210A1/fr
Publication of EP2273023A1 publication Critical patent/EP2273023A1/fr
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    • 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

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.
  • the said absorbent material is placed inside the cavity created by the frame and the boards (see figure 1 ).
  • the acoustic behaviour of partitions is well known and usually described by mass spring mass law, where the mass is created by the board cladding and the spring by the air in the cavity. It is also known that the spring effect is dependant to the cavity thickness and the absorbent material inside the cavity.
  • the said absorbent materials are usually used to dissipate acoustic energy inside the cavity and soften the so-called "spring effect”.
  • 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 problem is to improve insulating systems like partition, ceiling or lining without the necessary use of any absorbent material inside the cavity.
  • 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.
  • system according to the invention could performs in term of insulation equally to system of prior art.
  • system an assembly of at least one board, at least one frame, like for example partition, ceiling, floor or lining.
  • a porosity of 0% means that there is non air voids or water voids inside the material.
  • a porority of 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 By the expression “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.
  • substrate it is understood according to the invention floors, concrete floors, timber joist floors or others usual floors .
  • 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 Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements and calculated in an acoustic testing laboratory according EN ISO 717 Part1- Rating of sound insulation in buildings and in building elements.
  • fire-resisting it is understood according to the invention a system having fire-resisting properties, especially an Integrity Insulation (EI) value of at least 30 minutes.
  • EI Integrity Insulation
  • 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 insulating system according to the invention has a cementitious porous material having a porosity from 85 to 90 %, percentage in volume of air voids and water voids.
  • the insulating system according to the invention has a cementitious porous material having a Young 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 has 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 has 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 has 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 ).
  • the system according to the invention provides fire-resistance.
  • the insulating system of the invention provides especially an Integrity Insulation (EI) 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.
  • EI 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.
  • the airtight material suitable for the insulating system of the invention could be a airtight facer.
  • a 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 a airtight coating.
  • a 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 P852 from Lafarge.
  • 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 (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
  • FIG. 3 An example of a multi dense board is shown on figure 3 , with for example a first layer having a density of 0.7 to 0,9 and a second layer having a density of 0.3 to 0,5.
  • the insulating system of the invention comprises a multi layer panel wherein the said panel comprises
  • 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, among others possibilities, a composition as described in detail below.
  • composition suitable as gypsum porous material according to the invention may be a composition comprising at least
  • 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 gypsum plaster The advantages of FGD gypsum 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. Uniform fine particles are more uniformly and 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.
  • the composition suitable as gypsum porous material according to the invention comprises 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.
  • composition suitable as gypsum porous material according to the invention comprises 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).
  • 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 glucoronic 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, I.25-col.3, I.57, notably a compound having the general formula R 2 O(C n H 2n O) t (Z) x .
  • the general formula of the foaming agent is : R-O-(C 6 H 10 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: with 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.
  • 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
  • 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 cementitious 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 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.
  • 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 styrenebutadiene copolymers, styrene-acrylate copolymers, vinyl-acetate-ethylene copolymers and acrylate copolymers.
  • composition suitable as cementitious 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.
  • composition suitable as cementitious porous material according to the invention may also comprise a viscosity modifier like for example a water-soluble viscosity modifier.
  • 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 cementitious 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 cementitious porous material according to the invention may comprise a blocking agent which is preferably incorporated into the slurry in order to stop the setting 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 cementitious 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 term « porosity » means the total of the porosity induced by the presence of air voids and the porority resulting from the evaporation of water (water voids). Consequently the porosity values take into account the airs voids and the water voids.
  • composition suitable as gypsum porous material according to the invention may have
  • composition of the present invention is preferably, according to the composition of the present invention
  • composition suitable as gypsum porous material according to the invention More preferably, according to the composition suitable as gypsum porous material according to the invention
  • the composition of 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 360 kg/m 3 .
  • 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
  • the invention may be an insulating system having a multi layer panel on each side of a frame, the said system being a partition.
  • the insulating system may be an acoustic insulating partition.
  • the system according to this first 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 the first embodiment provides an improvement of at least 5dB expressed in R w+c , preferably at least 10 dB, and more preferably of at least 15 dB.
  • the system according to the first embodiment of the invention may comprise as porous material, the composition suitable as gypsum porous material described above.
  • the system according to the first embodiment of the invention may be an fire-resistant insulating partition.
  • the invention may be a insulating system having a multi layer panel on one side of a frame, the said system being 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 the second embodiment provides an improvement of at least 5dB expressed in R w+c , preferably at least 10 dB, and more preferably of at least 15 dB.
  • the system according to the second embodiment of the invention may comprise as porous material, the composition suitable as gypsum porous material described above.
  • 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
  • FIG. 4 An example of such an insulating system according to this third embodiment is shown on figure 4 .
  • FIGURES are a diagrammatic representation of FIGURES.
  • Example 1 production a composition suitable as gypsum porous material according to the invention:
  • the primary slurry thus obtained was pumped in a tube at a flow rate of 1 Umin.
  • 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 Umin to 2.5 Umin 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 Umin to 2.5 Umin 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 nonwoven 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:
  • the powder premix was composed of:
  • 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 Umin 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 Umin 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 nonwoven 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 1 with a minimum surface mass of 6.7 kg/m 2 .
  • the said boards were fixed vertically and parallel to the studs with 35-mm screws at 300mm centers on each side of the framing.
  • a 2.3 mm thick plaster coating with a surface mass of 3.6 kg/m 2 was applied in surface being the most outer layer to the cavity.
  • 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 Rw+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").
  • 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 (EI) of 30 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 EI of 60 minutes.
  • Example 4 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 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 36 mm.
  • 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 Rw+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 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 a12.5 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 Rw+C 45 dB for the partition with the said porous gypsum and Rw+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 (EI) 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 EI of 90 minutes.
  • 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 2 .
  • 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 Rw+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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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)

Claims (13)

  1. Système d'isolation présentant un panneau multicouche de chaque côté d'une ossature ou d'un côté d'une ossature, dans lequel ledit panneau comprend
    - au moins un matériau étanche à l'air ; et
    - au moins un matériau poreux cimentaire étant la couche la plus intérieure vers la cavité, caractérisé en ce que ledit matériau poreux cimentaire présente une porosité de 80 à 95% en volume de vides d'air et vides d'eau, et une densité de 150 à 450 kg/m3.
  2. Système d'isolation selon la revendication 1, ledit matériau poreux cimentaire présentant un module de Young en flexion de 0,1 à 10 GPa.
  3. Système d'isolation selon la revendication 1, ledit matériau poreux cimentaire présentant une résistance à la compression d'au moins 0,3 MPa.
  4. Système d'isolation selon la revendication 1, ledit matériau poreux cimentaire présentant une épaisseur minimum de 10 mm.
  5. Système d'isolation selon la revendication 1, ledit matériau poreux cimentaire présentant une résistance spécifique à l'écoulement comprise entre 10 000 et 3 000 000 N.s.m-4.
  6. Système d'isolation selon la revendication 1, avec une épaisseur de travail de la cavité (Tw) déterminée comme suit : Tw ≥ 1 , 4 Ta
    Figure imgb0005
    Ta étant l'épaisseur apparente de la cavité.
  7. Système d'isolation selon la revendication 1, ledit matériau poreux cimentaire étant un matériau poreux de gypse.
  8. Système d'isolation selon la revendication 7, ledit matériau poreux de gypse étant une composition comprenant au moins
    - un liant hydraulique ayant fait prise ; et
    - un agent moussant
    et présentant
    - une porosité ≥ à 80% en volume de vides d'air et de vides d'eau ;
    - une résistance spécifique à l'écoulement comprise entre 10 000 et 3 000 000 N.s.m-4 ;
    - une tortuosité comprise entre 1,2 et 3,4 ;
    - une longueur caractéristique visqueuse comprise entre 10 et 60 µm ;
    - une longueur caractéristique thermique comprise entre 60 et 1 000 µm.
  9. Système d'isolation selon la revendication 1, ledit système étant étanche à l'air.
  10. Système d'isolation présentant un panneau multicouche de chaque côté d'une ossature selon la revendication 1, ledit système étant une cloison.
  11. Système d'isolation selon la revendication 10, ledit système étant une cloison d'isolation acoustique.
  12. Système d'isolation selon la revendication 10, ledit système étant une cloison d'isolation résistante au feu.
  13. Système d'isolation présentant un panneau multicouche d'un côté d'une ossature selon la revendication 1, ledit système étant un plafond ou un revêtement.
EP09356039A 2008-12-09 2009-06-10 Cloison, plafond ou revêtement d'isolation acoustique ignifuge Active EP2273023B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP09356039A EP2273023B1 (fr) 2009-06-10 2009-06-10 Cloison, plafond ou revêtement d'isolation acoustique ignifuge
ES09356039T ES2386330T3 (es) 2009-06-10 2009-06-10 Tabique, techo o revestimiento aislante acústico, resistente al fuego
PL09356039T PL2273023T3 (pl) 2009-06-10 2009-06-10 Akustyczna, ognioodporna izolacyjna przegroda, sufit lub okładzina
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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09356039A EP2273023B1 (fr) 2009-06-10 2009-06-10 Cloison, plafond ou revêtement d'isolation acoustique ignifuge

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EP2273023A1 EP2273023A1 (fr) 2011-01-12
EP2273023B1 true EP2273023B1 (fr) 2012-06-20

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE49483B1 (en) * 1979-05-30 1985-10-16 Bpb Industries Ltd Production of building board
US4565647B1 (en) 1982-04-26 1994-04-05 Procter & Gamble Foaming surfactant compositions
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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PL2273023T3 (pl) 2012-09-28
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