AT379139B - USE OF DRY MORTAR AS A DEHUMIDIFICATION PLASTER - Google Patents
USE OF DRY MORTAR AS A DEHUMIDIFICATION PLASTERInfo
- Publication number
- AT379139B AT379139B AT264182A AT264182A AT379139B AT 379139 B AT379139 B AT 379139B AT 264182 A AT264182 A AT 264182A AT 264182 A AT264182 A AT 264182A AT 379139 B AT379139 B AT 379139B
- Authority
- AT
- Austria
- Prior art keywords
- plaster
- dry mortar
- methyl cellulose
- proviso
- perlite
- Prior art date
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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00543—Coating or impregnation materials for wet surfaces
-
- 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
- C04B2111/80—Optical properties, e.g. transparency or reflexibility
- C04B2111/802—White cement
Description
<Desc/Clms Page number 1>
Die Erfindung bezieht sich auf die Verwendung eines Trockenmörtels als Entfeuchtungsputz.
Es wurden schon Entfeuchtungsmörtel vorgeschlagen, die als Hauptbestandteile Perlite, Portlandzement PZ 275 und/oder Trasszement sowie gegebenenfalls Kalk enthalten. Diese Mörtel haben zwar gute Wärmedämmeigenschaften, sind jedoch nicht hydrophobierbar, d. h. sie lassen die Feuchtigkeit nicht nur in Dampfform, sondern auch in flüssiger Form hindurchtreten, was dazu führte, dass Salze aus dem Boden bzw. dem feuchten Mauerwerk in den Putz eindringen und Ausblühungen verursachen konnten. Bisher ist es nicht gelungen, derartige Mörtel so zu hydrophobieren, dass sie Feuchtigkeit nur in der Dampfphase durchlassen.
In der DE-OS 2308042 ist ein Mörtelteil beschrieben, dessen Zementanteil ausschliesslich oder überwiegend aus Weisszement besteht und der geblähten Perlite enthält. Darüber hinaus enthält der Mörtel Luftporenbildner und gegebenenfalls Zusätze, die seine Geschmeidigkeit erhöhen (Kalk) bzw. die die Schwindrissgefahr vermeiden oder verhindern sollen (Cellulosederivate). Dieser Mörtel wird als für die Herstellung von Edelputzen geeignet beschrieben, die einen besonders niedrigen Wasserdampf-Diffusionswiderstand aufweisen.
Allerdings ist auch der in dieser Druckschrift beanspruchte und im Beispiel näher erläuterte Mörtel nicht geeignet, das Eindringen von Salzen aus dem Boden bzw. dem feuchten Mauerwerk zu verhindern. Offenbar lässt auch dieser Putz noch einen gewissen Durchtritt von Feuchtigkeit in flüssiger Phase zu, was möglicherweise auf relativ hohe Gehalte an Zusatzstoffen bzw. auf das Vorhandensein des Porenbildners, aber auch auf die unkritische Auswahl des Zements im Hinblick auf seine Blaine-Zahl zurückzuführen sein könnte.
Normale Mörtel, die Luftporenbildner enthalten, sind zwar hydrophobierbar, haben jedoch keine ausreichenden Wärmedämmeigenschaften.
Da eine gute Wärmedämmung jedoch Voraussetzung für die Entfeuchtung von Mauerwerk ist, hat sich die Erfindung die Aufgabe gestellt, einen Putz auf Basis von hydraulischem Bindemittel und Leichtzuschlagstoffen zu hydrophobieren.
Diese Aufgabe wird erfindungsgemäss durch die Verwendung eines Trockenmörtels aus einer Mischung von Weisszement als hydraulisches Bindemittel mit einer Blaine-Zahl von zumindest 3000, vorzugsweise 3500 bis 5000, Wasserretentionsmittel, ausgewählt aus Methylcellulose und/oder Bentonen Fettalkoholsulfonaten als oberflächenaktive Substanzen, Hydrophobierungsmittel und Leichtzuschlagstoffen, vorzugsweise Perlite, als Entfeuchtungsputz, gelöst.
Der genaue Wirkungszusammenhang der eingesetzten Bestandteile ist noch nicht bekannt.
Es wurde aber überraschenderweise gefunden, dass die Verwendung eines derartigen Putzes den Durchtritt von Feuchtigkeit in flüssiger Phase hintanhält, und der Putz nur für die Dampfphase durchlässig ist.
Als Wasserretentionsmittel können beispielsweise Methylcellulose mit einer Viskosität von 2000 bis 10000 cP und/oder Bentone eingesetzt werden.
Als oberflächenaktive Substanzen werden Fettalkoholsulfonate und als Hydrophobierungsmittel werden ausserdem Metallseifen, z. B. Calciumstearat, Zinkstearat oder Alkalimetallsilikonate eingesetzt.
Als Leichtzuschlagstoffe kommen neben Perlite auch Flugasche bzw. Hochofenschlacke in Frage, während hydraulischer Kalk, Trass und Zement mit der entsprechenden Blaine-Zahl als hydraulische Bindemittel geeignet sind.
Das folgende Beispiel erläutert die Erfindung, ohne sie jedoch zu beschränken.
Man stellt einen Entfeuchtungsputz folgender Zusammensetzung her :
EMI1.1
<tb>
<tb> Gew.-Teile
<tb> Perlite <SEP> 200
<tb> Weisszement <SEP> PZ <SEP> 475 <SEP> 780
<tb> Calciumstearat <SEP> 10
<tb> Fettalkoholsulfonat <SEP> 0, <SEP> 20 <SEP>
<tb> Methylcellulose <SEP> 1, <SEP> 00 <SEP>
<tb>
Die Blaine-Zahl gibt die Oberfläche des betreffenden Materials in cm2/g an.
<Desc / Clms Page number 1>
The invention relates to the use of a dry mortar as a dehumidifying plaster.
Dehumidifying mortars have been proposed which contain perlite, Portland cement PZ 275 and / or trass cement as well as lime as main components. Although these mortars have good thermal insulation properties, they are not hydrophobizable, i.e. H. they allow moisture not only to pass through in vapor form, but also in liquid form, which means that salts from the floor or the damp masonry can penetrate the plaster and cause efflorescence. So far it has not been possible to hydrophobize such mortars in such a way that they only let moisture through in the vapor phase.
DE-OS 2308042 describes a mortar part whose cement portion consists exclusively or predominantly of white cement and which contains expanded perlite. In addition, the mortar contains air-entraining agents and, if necessary, additives which increase its suppleness (lime) or which are intended to avoid or prevent the risk of shrinkage cracks (cellulose derivatives). This mortar is described as being suitable for the production of high-quality plasters which have a particularly low water vapor diffusion resistance.
However, the mortar claimed in this document and explained in more detail in the example is also not suitable for preventing the penetration of salts from the floor or the moist masonry. Apparently, this plaster also allows a certain amount of moisture to pass through in the liquid phase, which could possibly be due to the relatively high content of additives or the presence of the pore former, but also to the non-critical selection of the cement with regard to its Blaine number .
Normal mortars containing air entraining agents can be made hydrophobic, but they do not have sufficient thermal insulation properties.
However, since good thermal insulation is a prerequisite for the dehumidification of masonry, the invention has set itself the task of hydrophobizing a plaster based on hydraulic binders and light aggregates.
This object is achieved according to the invention by using a dry mortar made from a mixture of white cement as a hydraulic binder with a Blaine number of at least 3000, preferably 3500 to 5000, water retention agents, selected from methyl cellulose and / or bentones, fatty alcohol sulfonates as surface-active substances, water repellents and light aggregates, preferably Perlite, as a dehumidifying plaster, dissolved.
The exact causal relationship between the components used is not yet known.
However, it was surprisingly found that the use of such a plaster prevents the passage of moisture in the liquid phase, and the plaster is only permeable to the vapor phase.
For example, methyl cellulose with a viscosity of 2000 to 10000 cP and / or Bentone can be used as water retention agent.
Fatty alcohol sulfonates are used as surface-active substances, and metal soaps, e.g. B. calcium stearate, zinc stearate or alkali metal silicone.
In addition to perlite, fly ash or blast furnace slag can also be considered as light aggregates, while hydraulic lime, trass and cement with the corresponding Blaine number are suitable as hydraulic binders.
The following example explains the invention without, however, restricting it.
A dehumidifying plaster of the following composition is produced:
EMI1.1
<tb>
<tb> parts by weight
<tb> Perlite <SEP> 200
<tb> white cement <SEP> PZ <SEP> 475 <SEP> 780
<tb> Calcium stearate <SEP> 10
<tb> fatty alcohol sulfonate <SEP> 0, <SEP> 20 <SEP>
<tb> methyl cellulose <SEP> 1, <SEP> 00 <SEP>
<tb>
The Blaine number indicates the surface area of the material in question in cm2 / g.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT264182A AT379139B (en) | 1982-07-07 | 1982-07-07 | USE OF DRY MORTAR AS A DEHUMIDIFICATION PLASTER |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT264182A AT379139B (en) | 1982-07-07 | 1982-07-07 | USE OF DRY MORTAR AS A DEHUMIDIFICATION PLASTER |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA264182A ATA264182A (en) | 1985-04-15 |
AT379139B true AT379139B (en) | 1985-11-25 |
Family
ID=3537901
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT264182A AT379139B (en) | 1982-07-07 | 1982-07-07 | USE OF DRY MORTAR AS A DEHUMIDIFICATION PLASTER |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT379139B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986006365A1 (en) * | 1985-04-22 | 1986-11-06 | Terranova-Industrie Gesellschaft M.B.H. | Method for rough-casting a wet masonry work, and rough casting comprised of a trowel-projected coat and of a sweetening coat for implementing such method |
Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2364344A (en) * | 1942-11-23 | 1944-12-05 | Connell Robert | Insulating compound |
US2985239A (en) * | 1956-06-25 | 1961-05-23 | Phillips Petroleum Co | Cement compositions and process of cementing wells |
GB949332A (en) * | 1961-07-21 | 1964-02-12 | Ici Ltd | Improvements in or relating to portland cement compositions |
AT281669B (en) * | 1967-12-29 | 1970-05-25 | Eduard Dr Jurak | Process for producing plaster or paint |
GB1266859A (en) * | 1968-04-09 | 1972-03-15 | ||
AT308621B (en) * | 1968-10-16 | 1973-07-10 | Rhodius Geb | Mixture for insulating plaster |
DE2308042A1 (en) * | 1972-02-24 | 1973-08-30 | Georg Dipl-Ing Klimburg | MORTAR |
DE2215147A1 (en) * | 1972-03-28 | 1973-10-11 | Rhodius Geb | Low-density mortar - with improved heat insulating properties for use with low-density bricks or sheet |
DE1571298B2 (en) * | 1965-03-25 | 1975-01-30 | Ab Gullhoegens Bruk, Skoevde (Schweden) | Binding agent for plastering and / or masonry mortar and mortar produced using this binding agent |
DE2449385A1 (en) * | 1974-10-17 | 1976-05-13 | Fritz E & H Dracholin | Dry compsn for in-situ-preparation of plaster - for inner and outer sides of building walls |
DE2613123B2 (en) * | 1976-03-27 | 1978-03-02 | Doliwa Geb. Strauss, Margarete, 8360 Deggendorf | Additives for mortar, in particular plastering mortar |
US4082563A (en) * | 1976-12-20 | 1978-04-04 | Tile Council Of America | Sag resistant mortar compositions |
GB2019380A (en) * | 1978-04-17 | 1979-10-31 | Tile Council Of America | Dry set mortar compositions and compositions for use therein |
DE2917263A1 (en) * | 1978-04-27 | 1979-11-08 | Okresni Stavebni P V Opave | Condensn.-preventing mortar prepn. - by mixing porous aggregate with water, adding binder and then surfactant, water-repellent fungicide and cellulose ether |
GB2027007A (en) * | 1978-08-03 | 1980-02-13 | Damiguet J J | Cement-based powdered waterrepellent composition and its applications |
CH628008A5 (en) * | 1975-04-21 | 1982-02-15 | Westvaco Corp | Low porosity, aggregate-containing cement composition and process for the production thereof |
-
1982
- 1982-07-07 AT AT264182A patent/AT379139B/en not_active IP Right Cessation
Patent Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2364344A (en) * | 1942-11-23 | 1944-12-05 | Connell Robert | Insulating compound |
US2985239A (en) * | 1956-06-25 | 1961-05-23 | Phillips Petroleum Co | Cement compositions and process of cementing wells |
GB949332A (en) * | 1961-07-21 | 1964-02-12 | Ici Ltd | Improvements in or relating to portland cement compositions |
DE1571298B2 (en) * | 1965-03-25 | 1975-01-30 | Ab Gullhoegens Bruk, Skoevde (Schweden) | Binding agent for plastering and / or masonry mortar and mortar produced using this binding agent |
AT281669B (en) * | 1967-12-29 | 1970-05-25 | Eduard Dr Jurak | Process for producing plaster or paint |
GB1266859A (en) * | 1968-04-09 | 1972-03-15 | ||
AT308621B (en) * | 1968-10-16 | 1973-07-10 | Rhodius Geb | Mixture for insulating plaster |
DE2308042A1 (en) * | 1972-02-24 | 1973-08-30 | Georg Dipl-Ing Klimburg | MORTAR |
DE2215147A1 (en) * | 1972-03-28 | 1973-10-11 | Rhodius Geb | Low-density mortar - with improved heat insulating properties for use with low-density bricks or sheet |
DE2449385A1 (en) * | 1974-10-17 | 1976-05-13 | Fritz E & H Dracholin | Dry compsn for in-situ-preparation of plaster - for inner and outer sides of building walls |
CH628008A5 (en) * | 1975-04-21 | 1982-02-15 | Westvaco Corp | Low porosity, aggregate-containing cement composition and process for the production thereof |
DE2613123B2 (en) * | 1976-03-27 | 1978-03-02 | Doliwa Geb. Strauss, Margarete, 8360 Deggendorf | Additives for mortar, in particular plastering mortar |
US4082563A (en) * | 1976-12-20 | 1978-04-04 | Tile Council Of America | Sag resistant mortar compositions |
GB2019380A (en) * | 1978-04-17 | 1979-10-31 | Tile Council Of America | Dry set mortar compositions and compositions for use therein |
DE2917263A1 (en) * | 1978-04-27 | 1979-11-08 | Okresni Stavebni P V Opave | Condensn.-preventing mortar prepn. - by mixing porous aggregate with water, adding binder and then surfactant, water-repellent fungicide and cellulose ether |
GB2027007A (en) * | 1978-08-03 | 1980-02-13 | Damiguet J J | Cement-based powdered waterrepellent composition and its applications |
Non-Patent Citations (1)
Title |
---|
KEIL, F.: ZEMENT, BERLIN/HEIDELBERG/NEW YORK: SPRINGER 1971, S.18, ABS. 5, 149, 150. * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986006365A1 (en) * | 1985-04-22 | 1986-11-06 | Terranova-Industrie Gesellschaft M.B.H. | Method for rough-casting a wet masonry work, and rough casting comprised of a trowel-projected coat and of a sweetening coat for implementing such method |
AT389300B (en) * | 1985-04-22 | 1989-11-10 | Terranova Ind Gmbh | METHOD FOR PLASTERING WET AND / OR SALTY MASONRY, AND DRY MIXTURE FOR A CELL PRIMER FOR CARRYING OUT THE METHOD |
Also Published As
Publication number | Publication date |
---|---|
ATA264182A (en) | 1985-04-15 |
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Legal Events
Date | Code | Title | Description |
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ELA | Expired due to lapse of time |