WO2012116380A1 - Corps composite et son procédé de production - Google Patents

Corps composite et son procédé de production Download PDF

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Publication number
WO2012116380A1
WO2012116380A1 PCT/AT2011/000099 AT2011000099W WO2012116380A1 WO 2012116380 A1 WO2012116380 A1 WO 2012116380A1 AT 2011000099 W AT2011000099 W AT 2011000099W WO 2012116380 A1 WO2012116380 A1 WO 2012116380A1
Authority
WO
WIPO (PCT)
Prior art keywords
formulation
composite
insulating material
calcium silicate
composite body
Prior art date
Application number
PCT/AT2011/000099
Other languages
German (de)
English (en)
Inventor
Michael Schmid
Original Assignee
Geolyth Mineral Technologie Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Geolyth Mineral Technologie Gmbh filed Critical Geolyth Mineral Technologie Gmbh
Priority to PCT/AT2011/000099 priority Critical patent/WO2012116380A1/fr
Priority to EP11718230.3A priority patent/EP2681172A1/fr
Publication of WO2012116380A1 publication Critical patent/WO2012116380A1/fr

Links

Classifications

    • 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
    • C04B28/06—Aluminous cements
    • C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/288—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material
    • 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
    • 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 invention relates to a composite body and a method for the production thereof.
  • the composite body according to the invention is a composite panel. This is particularly advantageous as a thermal insulation on the inside of building walls applicable.
  • Gypsum plasterboards are mainly used for the interior work of buildings. They consist of a plaster layer provided on both sides with a cardboard layer, a few millimeters thick. Usually plasterboard is screwed onto a wooden framework or on a lower layer of chipboard or similar material. Between the plasterboard surface and load-bearing masonry heat-insulating material such as glass wool can be arranged. The plasterboard itself is insignificant as thermal insulation. It can be important as fire protection. In terms of water vapor permeability, it is comparable to conventional mineral plaster. Above all, it is estimated that it is easy to work with and costs little.
  • So-called calcium silicate boards consist predominantly of silicon oxide, calcium oxide, water glass and cellulose.
  • So-called calcium silicate boards consist predominantly of silicon oxide, calcium oxide, water glass and cellulose.
  • the material thus formed is simply referred to in this document as "calcium silicate.”
  • the plate form is formed either by sawing out of a larger block, or in which the raw material mixture is already poured into plate form and cured.
  • Calcium silicate boards are already being used as thermal insulation boards in buildings.
  • the high capillarity is particularly valued on these plates and that they are not attacked by mold.
  • a vapor barrier is unnecessary.
  • a disadvantage compared to some other heat insulating materials are a higher price and a rather higher heat transfer value.
  • the object underlying the invention is to provide a usable as thermal insulation on the inside of building walls element, which also has high thermal insulation, high capillarity, good strength of the surface layer and low manufacturing costs and beyond easier to handle during delivery and installation is.
  • the element is a composite plate of two adhering layers, wherein the first layer is a plate of an at least predominantly mineral material, and wherein the second layer is specifically lighter and by a mineral, pores.
  • formed insulating material which is formed from a self-curing formulation of a hydraulically setting binder, a pozzolanic setting binder and a sulfate, and from a foamed component added to this formulation.
  • the plate is a calcium silicate plate.
  • the advantage of this is especially high capillarity that they are not attacked by mold.
  • the plate is a gypsum board. Particularly advantageous in this are the ease of processing and the low price.
  • both plates are well suited both for building physics and in terms of their strength for use as a surface material on inner walls and thus protect the mechanically sensitive but very effective as thermal insulation mineral, pore-containing insulation.
  • formulation is used briefly for the mixture of hydraulically setting binder, pulverulent binder and sulfate, and the term “slurry” is also used for the slurry which can be stirred therefrom with the addition of water.
  • the hydraulically setting binder is formed based on a sulfate aluminate cement. It contains a sulphate component and an aluminum component and is included in the formulation at least 50% by weight.
  • the stirred as a flowable slurry with the addition of water formulation including added mixed foam component is applied to an existing calcium silicate board 'and the calcium silicate board allowed to cure is.
  • the foam component of the previously blended and stirred with the addition of water to a slurry formulation is mixed in a second mixing stage.
  • the insulating layer can be produced without the need for autoclaving, whereby the process can be handled easily and therefore cost-effectively.
  • a good pretreatment for the surface of a plasterboard panel to be joined is to wet the plasterboard with water, for example by spraying it with a mist of water.
  • Said hydraulically setting binder causes the insulating material layer does not or only very slightly shrink during hardening. Too much shrinkage - which would occur with many other materials - would cause the insulating layer to separate from the calcium silicate board, either by breaking the bond at the interface or by breaking the insulating layer close to the calcium silicate board.
  • the proportion of the sulfate-aluminate cement in the formulation is preferably at least 60 parts by weight, in particular at least 70 parts by weight.
  • the mechanical properties and the insulating properties of the insulation layer are favorably influenced.
  • the sulfate component is preferably selected from a group comprising calcium sulfate, ⁇ - or ⁇ -hemihydrate or dihydrate of calcium sulfate, anhydrite, sodium sulfate, iron (II) sulfate, magnesium sulfate and mixtures and derivatives thereof. It will thus hydrate phases are generated during the hardening of the insulating layer, which lie in the course of time a phase transformation, the strength increases.
  • the aluminum component is preferably selected from a group comprising aluminum oxide (Al 2 O 3), aluminum hydroxides, aluminum silicates, aluminates and mixtures and derivatives thereof. It can thus be positively influenced the solidification behavior and the setting time of the insulating layer.
  • the ratio of the sulphate component to the aluminum component can be selected according to one embodiment from a range with a lower limit of 4:10 and an upper limit of 20:30. It is thus achieved that the setting time of the slurry does not take so long that the danger is that the added foam coincides and thus the porosity of the insulating layer is reduced. It is thus simplified by keeping the ratio of the two components in this area, the processing.
  • the ratio of the sulfate component to the aluminum component may be selected from a range having a lower limit of 6:12 and an upper limit of 13:22, preferably a lower limit of 10:18 range and an upper one Limit of 12: 24.
  • the formulation may additionally contain SiO 2 particles in a proportion of not more than 10 parts by weight.
  • the proportion of SiO 2 particles is preferably not more than 7.5 parts by weight, in particular not more than 7.5 parts by weight.
  • the formulation contains special SiO 2 particles in the form of so-called silica fumed.
  • This is a reactive SiO 2, which can improve the fire resistance of the insulation layer, by using SiO 2 as a "cooling" effect for reactions, especially DABEI. used without lead-free SiO 2 particles with a purity of at least 97%.
  • the SiO 2 particles have a BET surface area between 5 m 2 / g and 35 m 2 / g, in order to increase the reactivity.
  • the SiO 2 particles preferably have a BET surface area between 10 m 2 / g and 25 m 2 / g, in particular between 16 m 2 / g and 20 m 2 / g.
  • the SiO 2 particles have a particle size of at most 45 ⁇ m, wherein in particular the proportion of the coarse grain is limited to a maximum of 2% and the rest of the SiO 2 particles have a particle size of at most 1 ⁇ m, preferably at most 0.3 ⁇ m.
  • the formulation may further contain at least one so-called high-performance liquefier.
  • high-performance liquefier in order to influence the rheological behavior of the slurry formed from the formulation, provided that the addition of silica fumed, which also has a liquefying effect due to the spherical shape of the particles, is not sufficient solely for this purpose, the proportion being limited to a maximum of 3% by weight ,
  • the proportion of the high-performance plasticizer is limited to a maximum of 0.5 percent by weight, preferably at most 0.3 percent by weight.
  • the high-performance liquefier is preferably a polycarboxylate ether or a derivative thereof in order to be able to reduce the water content of the slurry so that less water is available for setting and thus the desired phases are formed more reliably.
  • the formulation for stabilizing the slurry and thus for better processability of the slurry at least one thickener is added in a proportion of not more than 0.5 percent by weight.
  • the thickener is preferably added in a proportion of not more than 0.25 percent by weight, in particular not more than 0.02 percent by weight.
  • the thickener is preferred selected from a group comprising hydroxymethylpropylcellulose, methylhydroxyethylcellulose and mixtures and derivatives thereof, since it has been found within the scope of the tests carried out for the invention that these thickeners have better properties with regard to processing, such as eg the rheology, the dispersion of the solids , or the water requirement and the water retention capacity.
  • the proportion of the thickener is at most 70% of the proportion of the high-performance liquefier.
  • the formulation of fibers in a proportion of not more than 3 percent by weight, in particular not more than 1 percent by weight, preferably 0.3 percent by weight, are added in order to improve the flexural strength of the insulating material. But it can also be used to stabilize the foam component. In addition, e.g. Store cellulose fibers water, which is needed in the setting process, this physically "bound" water is better controlled with respect to the hardening of the mineral foam.
  • Cellulose fibers can also be used as thickeners.
  • the fibers preferably have a maximum length of 50 mm, in particular not more than 30 mm, and are in particular selected from a group comprising cellulose fibers, basalt fibers, glass fibers, in particular alkali-resistant glass fibers, polypropylene fibers, and mixtures thereof.
  • Fibers of greater length so for example with a length between 3 mm and 50 mm, in particular between 3 mm and 30 mm, preferably between 3 mm and 12 mm, the diameter of which preferably between 13 pm and 25 ⁇ , preferably between 13 ⁇ and 18 pm is added, especially when the bending tensile strength is to be increased.
  • the formulation may be added to improve the rheology at least one processing aid from a group comprising an alkali metal carbonates, alkali metal sulfates, fruit acids, for example as a retarder.
  • At least one hydrophobicizing agent is added, in particular for the mass-hydrophobicization of the formulation.
  • the proportion of the hydrophobizing agent in the formulation may be up to 3 percent by weight, preferably up to 1 percent by weight.
  • these additives are free of aggregates, i. is filler-free, so contains no non-reactive constituents, whereby the density of the Dämmstoff Anlagen can be further reduced.
  • the foam component is preferably formed by a protein foam and / or a surfactant foam.
  • the foaming behavior can be better controlled than with the method of direct foaming by means of a blowing agent.
  • the pore size and the pore distribution can thus be better reproducible and influenced in a wider range.
  • the thermal conductivity or the sound absorption capacity of the insulation layer can be better adjusted.
  • the proportion of foam component per m 3 of slurry is preferably between 30 kg / m 3 and 70 kg / m 3 , in particular between 40 kg / m 3 and 60 kg / m 3 . In this area, particularly good insulation behavior of the insulating layer can be achieved.
  • a surfactant may be added to the foam component.
  • the insulation layer has a pore content of at least 70%, in particular between 80% and 95%. Due to this high proportion of pores, not only the insulation behavior per se can be improved, but also a lower density of the insulating material layer can be achieved.
  • the pores preferably have a diameter of at most 0.5 mm, in particular not more than 0.25 mm or not more than 0.1 mm, on the one hand to achieve a positive Dämm and on the other hand to improve the mechanical stability of the finished Dämmstoff für.
  • the foam component may also include air entraining agents, such as e.g. Alkyl polyglycol ethers, alkyl sulfates or sulfonates, i.a. to improve the stability of the foam.
  • air entraining agents such as e.g. Alkyl polyglycol ethers, alkyl sulfates or sulfonates, i.a. to improve the stability of the foam.
  • the foam component is added to water and possibly processing aids before addition to the slurry in a foam generator, whereby its processability, in particular the stability of the foam during mixing with the slurry, can be improved.
  • a foam generator in which a protein mixed with water with a gas, in particular air, is foamed.
  • the invention is illustrated by means of a drawing.
  • FIG. 1 shows, in a not to scale, simplified schematic form, an exemplary arrangement for producing a composite panel according to the invention in a sectional view.
  • a rectangular calcium silicate plate 1 is placed on a flat, solid base.
  • the edges of the cal- ziumsilikatplatte are bordered by a formwork 3, which has the shape of a lateral surface of a prism.
  • the formwork 3 is also on the flat solid base. Towards the top, it projects beyond the calcium silicate board 1.
  • a feed 4 which may be formed for example by a tube with a screw conveyor disposed therein, flowable mass 2 from the slurry of the formulation described above and the foam component blended therein in the limited by shuttering 3 and calcium silicate plate 1, upwardly open well volume filled.
  • the mass 2 hardens to an insulating layer, which is connected to the calcium silicate plate 1.
  • the rate of curing is dependent on the exact composition of the formulation in the mass 2. In particular, by the proportion of fruit acid, such as citric acid, the curing rate can be influenced. Green steady, the mass 2 is typically after five to ten minutes; The formwork 3 can thus be removed after this time without the shape of the consisting of hardening mass 2 and calcium silicate board 1 composite body still changes. Eighty percent of the final strength of the composite panel thus formed is typically achieved within a few hours.
  • the insulating material may be formed in the described composition with a density lower than 300 kg / m 3 and with a lower thermal conductivity than 0.05 W / mK.

Abstract

L'invention concerne un corps composite et son procédé de production. Dans un cas particulier particulièrement intéressant, le corps composite selon l'invention est une plaque composite qui peut être utilisée de manière particulièrement avantageuse en tant qu'isolation thermique sur le côté intérieur de murs de bâtiment. Le corps composite est constitué de deux corps formant un tout collés l'un à l'autre, un corps (1) étant constitué au moins en grande partie d'un matériau minéral et le second corps présentant un poids spécifique plus faible et étant formé d'un matériau isolant minéral (2) comprenant des pores. Le procédé de production du corps composite consiste à appliquer sur le corps (1) une matière coulante contenant du ciment expansé de sulfate-aluminate et durcissant pour former le matériau isolant, et à laisser durcir ladite matière sur ledit corps.
PCT/AT2011/000099 2011-03-03 2011-03-03 Corps composite et son procédé de production WO2012116380A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/AT2011/000099 WO2012116380A1 (fr) 2011-03-03 2011-03-03 Corps composite et son procédé de production
EP11718230.3A EP2681172A1 (fr) 2011-03-03 2011-03-03 Corps composite et son procédé de production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/AT2011/000099 WO2012116380A1 (fr) 2011-03-03 2011-03-03 Corps composite et son procédé de production

Publications (1)

Publication Number Publication Date
WO2012116380A1 true WO2012116380A1 (fr) 2012-09-07

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Family Applications (1)

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PCT/AT2011/000099 WO2012116380A1 (fr) 2011-03-03 2011-03-03 Corps composite et son procédé de production

Country Status (2)

Country Link
EP (1) EP2681172A1 (fr)
WO (1) WO2012116380A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104032886A (zh) * 2014-05-13 2014-09-10 上海建工集团股份有限公司 轻质、耐火、节能型预制外墙挂板及其施工方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03106642A (ja) * 1989-09-20 1991-05-07 Chichibu Cement Co Ltd 低収縮気泡モルタル複合パネル
DE9318466U1 (de) * 1993-12-02 1994-03-24 Preisler Ferdinand Verbundelement, insbesondere Verbundplatte, für Bauzwecke
EP0673733A2 (fr) * 1994-03-10 1995-09-27 Veit Dennert KG Baustoffbetriebe Procédé pour la fabrication d'un panneau léger isolant en matériau minéral poreux
EP0924175A1 (fr) * 1997-12-22 1999-06-23 Johannes Tribelhorn Produits moulés fabriqués de matériau de construction moussé
DE20303768U1 (de) * 2003-03-10 2003-06-18 Bauelemente Gmbh F J Linzmeier Innenwandverkleidung
FR2915701A1 (fr) * 2007-05-04 2008-11-07 Gypsmix Procede de fabrication d'un element de construction ayant au moins une face resistante au feu.
DE102007040654A1 (de) 2007-08-27 2009-03-12 Getifix Franchise Gmbh Wärmedämmungsverbundelement
CN101492273A (zh) * 2008-01-24 2009-07-29 李兴 一种发泡混凝土干粉砂浆的生产方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03106642A (ja) * 1989-09-20 1991-05-07 Chichibu Cement Co Ltd 低収縮気泡モルタル複合パネル
DE9318466U1 (de) * 1993-12-02 1994-03-24 Preisler Ferdinand Verbundelement, insbesondere Verbundplatte, für Bauzwecke
EP0673733A2 (fr) * 1994-03-10 1995-09-27 Veit Dennert KG Baustoffbetriebe Procédé pour la fabrication d'un panneau léger isolant en matériau minéral poreux
EP0924175A1 (fr) * 1997-12-22 1999-06-23 Johannes Tribelhorn Produits moulés fabriqués de matériau de construction moussé
DE20303768U1 (de) * 2003-03-10 2003-06-18 Bauelemente Gmbh F J Linzmeier Innenwandverkleidung
FR2915701A1 (fr) * 2007-05-04 2008-11-07 Gypsmix Procede de fabrication d'un element de construction ayant au moins une face resistante au feu.
DE102007040654A1 (de) 2007-08-27 2009-03-12 Getifix Franchise Gmbh Wärmedämmungsverbundelement
CN101492273A (zh) * 2008-01-24 2009-07-29 李兴 一种发泡混凝土干粉砂浆的生产方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104032886A (zh) * 2014-05-13 2014-09-10 上海建工集团股份有限公司 轻质、耐火、节能型预制外墙挂板及其施工方法
CN104032886B (zh) * 2014-05-13 2016-02-10 上海建工集团股份有限公司 轻质、耐火、节能型预制外墙挂板及其施工方法

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