DE19734465A1 - Dry mortar for interior plaster preparation - Google Patents
Dry mortar for interior plaster preparationInfo
- Publication number
- DE19734465A1 DE19734465A1 DE19734465A DE19734465A DE19734465A1 DE 19734465 A1 DE19734465 A1 DE 19734465A1 DE 19734465 A DE19734465 A DE 19734465A DE 19734465 A DE19734465 A DE 19734465A DE 19734465 A1 DE19734465 A1 DE 19734465A1
- Authority
- DE
- Germany
- Prior art keywords
- dry mortar
- weight
- mortar according
- plaster
- capillary
- 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.)
- Granted
Links
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 41
- 239000011505 plaster Substances 0.000 title claims abstract description 33
- 239000000945 filler Substances 0.000 claims abstract description 15
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 29
- 239000011230 binding agent Substances 0.000 claims description 10
- 239000010451 perlite Substances 0.000 claims description 9
- 235000019362 perlite Nutrition 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 6
- 230000002745 absorbent Effects 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 4
- 239000004567 concrete Substances 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 235000010755 mineral Nutrition 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000011435 rock Substances 0.000 claims description 2
- 235000012054 meals Nutrition 0.000 claims 2
- 230000000996 additive effect Effects 0.000 claims 1
- 239000010419 fine particle Substances 0.000 claims 1
- 238000005728 strengthening Methods 0.000 claims 1
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract 1
- 235000011132 calcium sulphate Nutrition 0.000 description 11
- 229920000609 methyl cellulose Polymers 0.000 description 11
- 239000001923 methylcellulose Substances 0.000 description 11
- 235000010981 methylcellulose Nutrition 0.000 description 11
- 235000013339 cereals Nutrition 0.000 description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- 235000013312 flour Nutrition 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 235000019738 Limestone Nutrition 0.000 description 4
- 239000006028 limestone Substances 0.000 description 4
- 229920002472 Starch Polymers 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- 239000002562 thickening agent Substances 0.000 description 3
- 239000000080 wetting agent Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 150000002191 fatty alcohols Chemical class 0.000 description 2
- 230000035558 fertility Effects 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000012764 mineral filler Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004848 polyfunctional curative Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 2
- 235000019830 sodium polyphosphate Nutrition 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/26—Carbonates
- C04B14/28—Carbonates of calcium
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/14—Minerals of vulcanic origin
- C04B14/18—Perlite
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/14—Minerals of vulcanic origin
- C04B14/18—Perlite
- C04B14/185—Perlite expanded
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/26—Carbonates
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/0076—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials characterised by the grain distribution
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/0076—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials characterised by the grain distribution
- C04B20/008—Micro- or nanosized fillers, e.g. micronised fillers with particle size smaller than that of the hydraulic binder
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/14—Acids or salts thereof containing sulfur in the anion, e.g. sulfides
- C04B22/142—Sulfates
- C04B22/143—Calcium-sulfate
-
- 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
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/06—Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers ; Inhibiting the action of active ingredients
- C04B40/0608—Dry ready-made mixtures, e.g. mortars at which only water or a water solution has to be added before use
-
- 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
Abstract
Description
Die Erfindung betrifft einen Trockenmörtel für einen minerali schen Innenputz nach dem Oberbegriff des Anspruchs 1.The invention relates to a dry mortar for a minerali internal plaster according to the preamble of claim 1.
Trockenmörtel für maschinengängige Innenputze auf der Basis Calciumsulfathalbhydrat als mineralisches Bindemittel und einem oder mehreren Zuschlägen werden üblicherweise mit einer mittleren Schichtdic ke von etwa 10 mm (Mindestdicke 5 mm gemäß DIN 11550 Teil 2) zum Verput zen von Innenwänden maschinell mit Wasser angemacht und aufgetragen, um dann nur noch glatt gestrichen zu werden.Dry mortar for machine-compatible interior plasters on the basis Calcium sulfate hemihydrate as a mineral binder and one or several surcharges are usually used with a medium layer thickness ke of approx. 10 mm (minimum thickness 5 mm according to DIN 11550 part 2) for putty zen of interior walls machine-made with water and applied to then only to be smoothed out.
Derartige Innenputze eignen sich jedoch nicht als Dünnschicht putze, die in einer mittleren Stärke von etwa 3 bis 7 mm, insbesondere 3 bis 5 mm, aufgetragen werden, da ihr Wasserrückhaltevermögen ungenügend ist. Eine Verbesserung des Wasserrückhaltevermögens würde zusätzliche Gehalte an teurer Methylcellulose erfordern. Methylcellulose ist zudem sehr temperaturempfindlich, so daß zur Einhaltung geforderter Verarbei tungseigenschaften derartige Mörtel im Sommer üblicherweise mit erhöhten Methylcellulosegehalten verarbeitet werden.However, such interior plasters are not suitable as a thin layer plasters with an average thickness of about 3 to 7 mm, especially 3 up to 5 mm, as their water retention capacity is insufficient is. An improvement in the water retention capacity would be additional Require levels of expensive methyl cellulose. Methyl cellulose is also very temperature-sensitive, so that processing required to comply Properties of such mortars are usually increased in summer Methylcellulose content can be processed.
Ein weiteres Merkmal bekannter gipsgebundener Innenputze be steht darin, daß sie aufgrund der eingesetzten Nieder- und Hochbrand gipsbindemittel (Calciumsulfat-Betahalbhydrat, -Anhydrit) alterungsemp findlich und deswegen in ihren Verarbeitungs- und Abbindeeigenschaften wenig stabil sind.Another feature of known gypsum-bound interior plasters be it says that they are due to the low and high fire used gypsum binder (calcium sulfate beta hemihydrate, anhydrite) aging temp sensitive and therefore in their processing and setting properties are not very stable.
Die Kombination von Calciumsulfat-Betahalbhydrat und hohen Ge halten an Methylcellulose führt zudem zu erheblichen Dispergierproblemen (Knötchenbildung) im Frischmörtel.The combination of calcium sulfate beta hemihydrate and high Ge adherence to methyl cellulose also leads to considerable dispersion problems (Pilling) in the fresh mortar.
Aufgabe der Erfindung ist es, einen Trockenmörtel für einen mineralischen Innenputz nach dem Oberbegriff des Anspruchs 1 zu schaf fen, der alterungsunempfindlich ist und auf Basis dessen alle gängigen Putztypen, insbesondere Maschinen- und Maschinenleichtputz zum Auftrag normaler Schichtdicke wie auch als Dünnschichtputz hergestellt und verarbeitet werden können.The object of the invention is to provide a dry mortar for a mineral interior plaster according to the preamble of claim 1 to sheep fen, which is insensitive to aging and based on this all common Plaster types, in particular machine and machine light plaster for application normal layer thickness as well as thin layer plaster and can be processed.
Diese Aufgabe wird entsprechend dem kennzeichnenden Teil des Anspruchs 1 gelöst.This task is carried out according to the identifying part of the Claim 1 solved.
Hierbei wird als mineralisches Bindemittel ein insbesondere relativ grobes Calciumsulfat-Alphahalbhydrat mit einer spez. Oberfläche nach Blaine etwa von 1200 bis 5000, insbesondere 2000 bis 3000 cm2/g verwendet, das leicht benetzbar ist. Calciumsulfat-Alphahalbhydrat ist im Gegensatz zu -Betahalbhydrat und -Anhydrit ein alterungsunempfindli ches, lagerungsstabiles und damit gutmütiges Bindemittel. Infolge seines geringen Wasseranspruchs ergibt sich normalerweise eine geringe Ergie bigkeit und eine hohe Festigkeit, so daß dieses Bindemittel an sich für einen Innenputz, d. h. einen Mörtel mit relativ geringem Elastizitätsmo dul, ungeeignet ist. Dieses Bindemittel wird zweckmäßigerweise in einer Menge von etwa 25 bis 50 Gew.-%, insbesondere etwa 30 bis 40 Gew.-%, des Trockenmörtels verwendet. Here, a particularly relatively coarse calcium sulfate alpha hemihydrate with a spec. Blaine surface of about 1200 to 5000, in particular 2000 to 3000 cm 2 / g used, which is easily wettable. Calcium sulfate alpha hemihydrate, in contrast to beta hemihydrate and anhydrite, is a non-aging, storage-stable and therefore good-natured binder. As a result of its low water requirement usually results in a low Ergie bigkeit and high strength, so that this binder per se for an interior plaster, ie a mortar with a relatively low elasticity modulus, is unsuitable. This binder is expediently used in an amount of about 25 to 50% by weight, in particular about 30 to 40% by weight, of the dry mortar.
Bewährt haben sich auch Kombinationen von Calciumsulfat-Alpha halbhydrat mit anderen abbindefähigen Calciumsulfaten, wobei ein Teiler satz von bis zu 10 Gew.-% des Calciumsulfat-Alphahalbhydrats durch diese anderen Calciumsulfate zu brauchbaren Ergebnissen führt.Combinations of calcium sulfate alpha have also proven useful hemihydrate with other settable calcium sulfates, with a divider rate of up to 10 wt .-% of the calcium sulfate alpha hemihydrate through this other calcium sulfates leads to useful results.
Das spezielle Bindemittel wird zusammen mit einem kapillar saugfähigen, natürlichen oder künstlichen Füllstoff, insbesondere in Form eines saugfähigen Steinmehls, mit einer Korngröße < 10 µm, insbe sondere < 5 µm, (jeweils x50-Wert), und einer BET-Oberfläche < 2 m2/g verwendet. Die hohe BET-Oberfläche zeigt an, daß es sich hierbei um ei nen Füllstoff mit großer innerer Oberfläche, d. h. mit kapillarwirksamen, ultrafeinen Poren handelt. Es hat sich überraschenderweise gezeigt, daß die Kombination des verwendeten Bindemittels mit diesem kapillarsaugfä higen Füllstoff selbst auf saugenden Untergründen und im Falle der Ver wendung als Dünnschichtputz ein ausreichend hohes Wasserrückhaltevermö gen sicherstellt, und zwar bei einem wesentlich reduzierten Gehalt an wasserrückhaltenden chemischen Hilfsstoffen wie Methylcellulose. Hier durch kommt es zugleich nicht zu einer störenden Knötchenbildung beim Anmischen und Verarbeiten des Frischmörtels.The special binder is used together with a capillary absorbent, natural or artificial filler, in particular in the form of an absorbent rock powder, with a grain size <10 microns, in particular special <5 microns, (each x50 value), and a BET surface area <2 m 2 / g used. The high BET surface area indicates that this is a filler with a large internal surface, ie with capillary-acting, ultra-fine pores. It has surprisingly been found that the combination of the binder used with this kapillarsaugfä-capable filler even on absorbent substrates and in the case of Ver use as thin-layer plaster ensures a sufficiently high level of water retention, with a significantly reduced content of water-retaining chemical auxiliaries such as methyl cellulose. At the same time, this means that there is no disruptive pod formation when mixing and processing the fresh mortar.
Der kapillarporöse Füllstoff wird zweckmäßigerweise in einer Menge etwa von 20 bis 40 Gew.-%, vorzugsweise etwa 30 bis 35 Gew.-%, eingesetzt.The capillary-porous filler is expediently in a Amount from about 20 to 40% by weight, preferably about 30 to 35% by weight, used.
Der kapillarporöse Füllstoff bildet somit ein entsprechendes Wasserreservoir für das Abbinden des Innenputzes und führt zu einer selbst für Dünnschichtputze ausreichenden Wasserretention. Zusammen mit dem verwendeten Bindemittel stellt sich dann auch eine für einen Innen putz gewünschte Festigkeit und ein hierfür gewünschter Elastizitätsmodul ein.The capillary-porous filler thus forms a corresponding one Water reservoir for the setting of the interior plaster and leads to a Adequate water retention even for thin-layer plasters. Along with the binder used is then also used for an interior plaster desired strength and a desired modulus of elasticity for this a.
Ein auf der Basis dieses Bindemittel und dieses kapillarporö sen Füllstoffs hergestellter Trockenmörtel kann so eingestellt werden, daß er mit konventionellen Maschinen verarbeitbar und sowohl als norma ler Innenputz in üblicher Schichtdicke auftragbar ist, als auch als Dünnschichtputz eingestellt werden kann.One on the basis of this binder and this kapillarporö The dry mortar produced with this filler can be adjusted in such a way that that it can be processed with conventional machines and as a norma ler interior plaster can be applied in the usual layer thickness, as well as Thin layer plaster can be adjusted.
Ergiebigkeit und Geschmeidigkeit des Trockenmörtels entspre chen marktgängigen Anforderungen. Coverage and suppleness of the dry mortar correspond common market requirements.
Die Einstreumenge des kapillarporösen Füllstoffs liegt zweck mäßigerweise < 180 g/100g Wasser.The amount of litter of the capillary-porous filler is appropriate moderately <180 g / 100g water.
Als natürlicher mineralischer Füllstoff kommt insbesondere Kreidemehl in Frage, dessen Körner ultrafeine Poren besitzen. Dies kann jedoch bis zu etwa 10 Gew.-% durch pulverförmigen, grobkörnigeren Poren beton ersetzt sein, der ebenfalls stark porös ist und sich dementspre chend günstig auf das Wasserrückhaltevermögen auswirkt. Aufgrund seines gröberen Korns wirkt er sich zusätzlich günstig auf die Vermeidung von Knötchenbildung im angemachten Trockenmörtel aus.As a natural mineral filler comes in particular Chalk flour in question, the grains of which have ultra-fine pores. This can but up to about 10% by weight through powdery, coarser-grained pores concrete, which is also highly porous and accordingly has a favorable effect on the water retention capacity. Because of his coarser grain, it also has a beneficial effect on avoiding Lump formation in the mixed dry mortar.
Im Trockenmörtel werden darüberhinaus ein nicht-poröser mine ralischer Füllstoff, beispielsweise Steinmehl, etwa mit einer Körnung von 0 bis 0,09 mm, in einer Menge von 15 bis 25 Gew.-%, insbesondere et wa 20 Gew.-%, sowie ein Feinkornzuschlag in einer Menge von 5 bis 15 Gew.-%, insbesondere etwa 10 Gew.-%, eingesetzt. Der Feinkornzuschlag hat zweckmäßigerweise eine Körnung von 0,1 bis 1 mm und kann carbonati scher, sulfatischer (z. B. dihydratfreier Naturanhydrit-Feinsplitt) oder quarzitischer Zusammensetzung sein.In addition, the dry mortar contains a non-porous mine Ral filler, for example stone flour, for example with a grain from 0 to 0.09 mm, in an amount from 15 to 25% by weight, in particular et wa 20% by weight, as well as a fine grain surcharge in an amount of 5 to 15 % By weight, in particular about 10% by weight, are used. The fine grain surcharge expediently has a grain size of 0.1 to 1 mm and can carbonate shear, sulphatic (e.g. dihydrate-free natural anhydrite fine grit) or quartzitic composition.
Zur alkalischen Einstellung des Innenputzes kann dem Trocken mörtel etwa 0,5 bis 5 Gew.-% Kalkhydrat zugesetzt werden.Drying can be used to make the interior plaster alkaline mortar about 0.5 to 5 wt .-% hydrated lime can be added.
Der Trockenmörtel kann auch zur Herabsetzung seines Gewichtes Leichtzuschläge beispielsweise bis zu etwa 5 Gew.-% enthalten, so etwa Perlite. Dies macht den daraus hergestellten Innenputz leichter, ge schmeidiger und weicher. Auch kann zu diesem Zweck ein Zusatz in Form eines Luftporenbildners enthalten sein.The dry mortar can also be used to reduce its weight Light aggregates contain up to about 5% by weight, for example Perlite. This makes the interior plaster made from it easier, ge smoother and softer. An addition in the form of an air entraining agent.
Zusätze (chemische Hilfsstoffe zur Einstellung der Erhär tungscharakteristik des Innenputzes (Erstarrungs- und Erhärtungsbe schleuniger wie etwa Weinsäure, Natriumpolyphosphat od. dgl.), Verdicker zur Verstärkung des Standvermögens (Stärkeäther), Methylcellulose (etwa eine Kombination aus hoch- und niedrigviskoser), Netzmittel, Pulverdis persionen, Fasern wie Cellulose- und Acrylfasern und dergleichen können einzeln oder in Kombination enthalten sein.Additives (chemical auxiliaries to adjust the hardener performance characteristics of the interior plaster (solidification and hardening faster such as tartaric acid, sodium polyphosphate or the like), thickeners to increase the stability (starch ether), methyl cellulose (approx a combination of high and low viscosity), wetting agent, powder dis persions, fibers such as cellulose and acrylic fibers and the like can be included individually or in combination.
Beispielsweise weisen als Füllstoffe geeignete Kreidemehle folgende Spezifikation auf: For example, suitable fillers include chalk flours the following specification:
Das eingesetzte Calciumsulfat-Alphahalbhydrat weist beispiels
weise folgende Spezifikation auf:
Spez. Oberfläche nach Blaine: 2520 cm2/g
Einstreumenge (DIN 1168): 264 g
Druckfestigkeit (DIN 1168): 40,1 N/mm2
Biegezugfestigkeit (DIN 1168): 9,7 N/mm2.The calcium sulfate alpha hemihydrate used has the following specification, for example:
Blaine specific surface area: 2520 cm 2 / g
Amount of litter (DIN 1168): 264 g
Compressive strength (DIN 1168): 40.1 N / mm 2
Flexural strength (DIN 1168): 9.7 N / mm 2 .
Die Trockenmörtel lassen sich als Maschinenputz unter Einsatz von 0,1 bis 1 Gew.-% Perlite (0/1mm) und als Maschinenleichtputz unter Einsatz von 2 bis 5 Gew.-% Perlite (0/1mm) für übliche Schichtdicken (DIN 18550 Teil 2) verwenden. Ebenso ist die Verwendung als Dünnschicht putz in 3 bis 7 mm Schichtdicke auf Plansteinmauerwerk, als Fertigputz für übliche Putzgründe mit Ausnahme von Beton sowie als Haftputz bei Zu mischung haftverstärkender chemischer Zusätze wie Redispergierpulver od. dgl. möglich. Der Trockenmörtel kann auch multifunktionell sowohl in üb licher Schichtdicke ebenso wie als Dünnschichtputz mit verkürzter Erhär tungscharakteristik unter Einsatz von 2 bis 5 Gew.-% Perlite (0/1mm) verwendet werden.The dry mortars can be used as machine plaster from 0.1 to 1% by weight perlite (0 / 1mm) and as lightweight machine plaster underneath Use of 2 to 5% by weight perlite (0 / 1mm) for normal layer thicknesses (DIN 18550 part 2). It can also be used as a thin film plaster in 3 to 7 mm layer thickness on plan stone masonry, as finished plaster for common plaster bases with the exception of concrete and as adhesive plaster for Zu Mixture of chemical additives such as redispersing powder or the like. possible. The dry mortar can also be multifunctional both in lighter layer thickness as well as thin layer plaster with shortened hardener performance characteristics using 2 to 5% by weight perlite (0 / 1mm) be used.
Ein Trockenmörtel wird gemäß nachstehender Rezeptur herge
stellt:
A dry mortar is produced according to the following recipe:
*Viskosität bestimmt gemäß DIN 53788 in 2%-iger Lösung bei 20°C und ei nem Schergefälle von 2,55 s-1 * Viscosity determined according to DIN 53788 in 2% solution at 20 ° C and a shear gradient of 2.55 s -1
. .
Hiermit ergeben sich folgende technologische Daten:
This results in the following technological data:
Ein Trockenmörtel wird gemäß nachstehender Rezeptur herge
stellt:
A dry mortar is produced according to the following recipe:
*Viskosität bestimmt gemäß DIN 53788 in 2%-iger Lösung bei 20°C und ei nem Schergefälle von 2,55 s-1 * Viscosity determined according to DIN 53788 in 2% solution at 20 ° C and a shear gradient of 2.55 s -1
..
Hiermit ergeben sich folgende technologische Daten:
This results in the following technological data:
Ersetzt man im Beispiel 2 den Anteil an Kreidemehl durch eine entsprechende Menge an nicht porösem Calciumcarbonat vergleichbarer Feinheit, bewirkt dies eine Erniedrigung des Wasserrückhaltevermögens im angemachten Trockenmörtel auf 94,6%. Erhöht man nun den Anteil an Me thylcellulose (40000 mPa.s) um 0,3 Gew.-%, erreicht man zwar eine Erhö hung des Wasserrückhaltevermögens auf 96,9%, jedoch auf Kosten eines hohen Anteils an Methylcellulose mit den damit verbundenen, oben aufge führten Nachteilen.If in example 2 the proportion of chalk flour is replaced by a corresponding amount of non-porous calcium carbonate comparable Fineness, this causes a reduction in the water retention capacity in the prepared dry mortar to 94.6%. If you now increase the proportion of Me thylcellulose (40,000 mPa.s) by 0.3% by weight, an increase is achieved increase the water retention capacity to 96.9%, but at the expense of one high proportion of methyl cellulose with the associated, listed above led to disadvantages.
Claims (16)
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DE19734465A DE19734465C2 (en) | 1997-08-11 | 1997-08-11 | Dry mortar based on calcium sulfate alpha-hemihydrate and its uses |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19826725A1 (en) * | 1998-06-16 | 1999-12-23 | Wilhelm Haase | Speciality mortar dry premix base compositions for use on building sites |
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DE102004040879B3 (en) * | 2004-08-24 | 2006-05-04 | Bk Giulini Gmbh | Use of a composition for setting retardation of gypsum and gypsum preparations and compositions containing this composition |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1920943A1 (en) * | 1968-04-24 | 1969-11-06 | Bpb Industries Ltd | Gypsum mortar |
EP0662460A1 (en) * | 1993-12-16 | 1995-07-12 | SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG | Binder for interior plaster |
DE4401802A1 (en) * | 1994-01-22 | 1995-07-27 | Sicowa Verfahrenstech | Binder for internal plaster |
EP0749944A1 (en) * | 1995-06-22 | 1996-12-27 | SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG | Binder for mortars and concrete |
DE19612861A1 (en) * | 1995-06-22 | 1997-01-02 | Sicowa Verfahrenstech | Binder for mortar and concrete |
EP0760352A1 (en) * | 1995-08-31 | 1997-03-05 | Rigips GmbH | Dry gypsum of lime-gypsum plastering mortars based on hydrophobised gas concrete granules |
-
1997
- 1997-08-11 DE DE19734465A patent/DE19734465C2/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1920943A1 (en) * | 1968-04-24 | 1969-11-06 | Bpb Industries Ltd | Gypsum mortar |
GB1258078A (en) * | 1968-04-24 | 1971-12-22 | ||
EP0662460A1 (en) * | 1993-12-16 | 1995-07-12 | SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG | Binder for interior plaster |
US5522928A (en) * | 1993-12-16 | 1996-06-04 | Sicowa Verfahrenstechnik Fur Baustoffe Gmbh & Co. Kg | Binder for interior plasters |
DE4401802A1 (en) * | 1994-01-22 | 1995-07-27 | Sicowa Verfahrenstech | Binder for internal plaster |
EP0749944A1 (en) * | 1995-06-22 | 1996-12-27 | SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG | Binder for mortars and concrete |
DE19612861A1 (en) * | 1995-06-22 | 1997-01-02 | Sicowa Verfahrenstech | Binder for mortar and concrete |
EP0760352A1 (en) * | 1995-08-31 | 1997-03-05 | Rigips GmbH | Dry gypsum of lime-gypsum plastering mortars based on hydrophobised gas concrete granules |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19826725A1 (en) * | 1998-06-16 | 1999-12-23 | Wilhelm Haase | Speciality mortar dry premix base compositions for use on building sites |
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