DE3832287C1 - Magnesia cement mixture - Google Patents
Magnesia cement mixtureInfo
- Publication number
- DE3832287C1 DE3832287C1 DE19883832287 DE3832287A DE3832287C1 DE 3832287 C1 DE3832287 C1 DE 3832287C1 DE 19883832287 DE19883832287 DE 19883832287 DE 3832287 A DE3832287 A DE 3832287A DE 3832287 C1 DE3832287 C1 DE 3832287C1
- Authority
- DE
- Germany
- Prior art keywords
- cement mixture
- magnesia cement
- water
- silica
- magnesium
- 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.)
- Expired
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
- C04B28/30—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 magnesium cements or similar cements
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Magnesiazementmischung der im Oberbegriff des Anspruchs 1 genannten Art.The invention relates to a magnesia cement mixture the type mentioned in the preamble of claim 1.
Das Beimischen von Puzzolanen zu Magnesiamörtel ist bekannt (DE-PS 9 15 674). Zwar bringt diese Beimischung von Puzzolanen eine gewisse Qualitätsverbesserung. Nachteilig ist jedoch, daß der Magnesiamörtel dadurch keinesfalls wasserfest zu ge stalten ist. Ferner ist in der DE-PS 10 14 910 angesprochen, einem Gemisch aus gebranntem Magnesit und sonstigen Bestandteilen statt dessen Wasserglas zuzusetzen. Dies ist nachteilig, weil es bei dem Zusatz von Wasserglas in der Magnesiumchloridlösung sofort zu einer Fällung kommt.The admixture of pozzolans to magnesia mortar is known (DE-PS 9 15 674). This admixture of puzzolans does indeed a certain quality improvement. However, the disadvantage is that the magnesia mortar is by no means waterproof to ge design. Furthermore, DE-PS 10 14 910 addresses one Mixture of burned magnesite and other ingredients add water glass instead. This is disadvantageous because it with the addition of water glass in the magnesium chloride solution a precipitation occurs immediately.
Der Erfindung liegt die Aufgabe zugrunde, eine Magnesiazement mischung der eingangs genannten Art zu schaffen, die es möglich macht, daß der dann entstehende Mörtel wasserfest ist und auch nicht zu Treibrissen neigt.The invention has for its object a magnesia cement to create a mixture of the type mentioned that is possible makes that the resulting mortar is waterproof and also not prone to driving cracks.
Die Aufgabe ist bei einer Magnesiazementmischung der im Ober begriff des Anspruchs 1 genannten Art gemäß der Erfindung durch die Merkmale in dessen Kennzeichnungsteil gelöst. Alternativ dazu kommen als ebenso vorteilhafte Gestaltungen gemäß der Erfindung auch die Mischungen gemäß Anspruch 2 oder 3 oder 4 in Betracht. The task is with a magnesia cement mixture in the upper Concept of claim 1 mentioned type according to the invention solved by the features in its labeling part. Alternatively, there are also advantageous designs according to the invention also the mixtures according to claim 2 or 3 or 4 into consideration.
Weitere vorteilhafte Merkmale ergeben sich aus den An sprüchen A5 bis 7.Further advantageous features emerge from the An sayings A5 to 7.
Es wurde schon vorgeschlagen (US-PS 33 20 077), Phosphate zuzusetzen. Es hat sich aber gezeigt, daß derartige Mörtelproben nach einiger Zeit durch die Bildung von Treibrissen zerstört werden. Ferner ergeben sich sehr lange Abbindezeiten, so daß der Zement erst nach mehreren Tagen erhärtet ist. Im übrigen ist das Verfahren für die Verhältnisse auf Baustellen, z. B. bei der Herstellung von Industriefußböden, viel zu kompliziert.It has already been proposed (US Pat. No. 3,320,077) Add phosphates. However, it has been shown that such mortar samples after some time through the formation be destroyed by driving cracks. Furthermore, very much arise long setting times, so that the cement only after several Days has hardened. Otherwise, the procedure for Conditions on construction sites, e.g. B. in the manufacture of Industrial floors, far too complicated.
Dagegen wurde festgestellt, daß bei der erfindungsgemäßen Mischung dann, wenn in der Mischung sowohl Puzzolane oder Kieselerde als auch wasserlösliche Phosphate oder Oxal säure oder Citronensäure oder Mischungen dieser Stoffe zu gesetzt werden, er dann entstehende Mörtel in hohem Maße wasserfest ist und außerdem nicht zu Treibrissen neigt. Ferner sind keine komplizierten Mischverfahren notwendig. Von Vorteil ist ferner, daß die Abbindezeit im üblichen Bereich liegt. Vorteilhaft kann es sein, wenn das Phosphat, die Citronensäure, die Oxalsäure oder Mischungen dieser Stoffe, bezogen auf das Magnesiumoxid, in einer Menge zwi schen 0,25% und 10% zugesetzt werden. Vorteilhaft kann es ferner sein, wenn Puzzolane oder Kieselerde, bezogen auf das Magnesiumoxid, in einer Menge zwischen 5% und 50% zu gesetzt werden. Die Eigenschaften des Mörtels lassen sich durch die Menge und durch die Kombination dieser Stoffe variieren. Anstelle des Zusatzes von pulverförmigen Puzzo lanen oder Kieselerde kann auch Wasserglas zugesetzt wer den, was bisher nicht möglich war, da es beim Zusatz von Wasserglas in der Magnesiumchloridlösung sofort zu einer Fällung kam. Durch die vorgenannten Zusätze jedoch wird dies verhindert.In contrast, it was found that in the invention Mix if both Puzzolane or Silica as well as water-soluble phosphates or oxal acid or citric acid or mixtures of these substances be set, then the resulting mortar to a great extent is waterproof and also has no tendency to crack. Furthermore, no complicated mixing processes are necessary. Another advantage is that the setting time in the usual Area. It can be advantageous if the phosphate, citric acid, oxalic acid or mixtures thereof Substances, based on the magnesium oxide, in an amount between 0.25% and 10% are added. It can be advantageous furthermore, if puzzolane or silica, based on the magnesium oxide, in an amount between 5% and 50% too be set. The properties of the mortar can be by the amount and by the combination of these substances vary. Instead of adding powdered puzzo Water or glass can also be added to lanes or silica what was previously not possible, since adding Water glass in the magnesium chloride solution immediately into one Precipitation came. However, through the aforementioned additives this prevents.
Die erfindungsgemäße Zementmischung führt dazu, daß der Magnesiamörtel neben der Wasserfestigkeit sich auch dadurch auszeichnet, daß Chloride nur in geringer Menge aus dem Mörtel ausgelöst werden, wodurch die Korrosionsgefahr ins besondere in Verbindung mit Stahlbauteilen deutlich ge mindert wird. Um das Auslösen korrosionsfördernder Chloride auszuschließen oder zumindest noch weiter zu mindern, ist es vorteilhaft, die Chloride in geeigneter Form zu passi vieren. Diese kann z. B. dadurch geschehen, daß zusätzlich zu den wasserlöslichen Phosphaten der Mischung während oder nach dem Abbinden des Zements Phosphate in der Weise zugegeben werden, daß sie aus dem gehärteten Zement gelöst werden können.The cement mixture according to the invention leads to the Magnesia mortar in addition to water resistance distinguishes that chlorides from the Mortar are triggered, causing the risk of corrosion in the especially in connection with steel components is reduced. To trigger corrosive chlorides is excluded or at least further reduced it is advantageous to pass the chlorides in a suitable form four. This can e.g. B. happen that in addition to the water-soluble phosphates of the mixture during or after setting the cement phosphates in the way be added that they are released from the hardened cement can be.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883832287 DE3832287C1 (en) | 1988-09-22 | 1988-09-22 | Magnesia cement mixture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883832287 DE3832287C1 (en) | 1988-09-22 | 1988-09-22 | Magnesia cement mixture |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3832287C1 true DE3832287C1 (en) | 1989-09-21 |
Family
ID=6363527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19883832287 Expired DE3832287C1 (en) | 1988-09-22 | 1988-09-22 | Magnesia cement mixture |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3832287C1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0454660A1 (en) * | 1990-04-23 | 1991-10-30 | MAGINDAG Steirische Magnesit-Industrie Aktiengesellschaft | Waterproof and abrasionproof Sorelcement composition for floors and process for the production of such floors |
GR1000416B (en) * | 1990-09-13 | 1992-06-30 | Georgios Sigaras | Incombustible anorganic industrial pavement and method for producing - fabricating it |
WO1995032929A1 (en) * | 1994-05-30 | 1995-12-07 | Baran Advanced Materials (94) Ltd. | Improved water-resistant magnesite cement and process for its manufacture |
DE10113060C2 (en) * | 2000-03-16 | 2003-06-12 | Kaeser Gmbh & Co | Process for the production of castings and combination of materials therefor |
EP1627861A2 (en) * | 2004-08-19 | 2006-02-22 | Styromagnesit Steirische Magnesitindustrie GmbH | Pumpable selflevelling magnesia flooring composition |
CN102898116A (en) * | 2012-11-06 | 2013-01-30 | 南京福臻再生资源科技股份有限公司 | Hydrophobic inorganic gel material and preparation method thereof |
CN105367034A (en) * | 2015-12-15 | 2016-03-02 | 张家港市盛港绿色防火建材有限公司 | Magnesium oxysulfate board modifying agent and using method thereof |
CN107721218A (en) * | 2017-10-18 | 2018-02-23 | 中国科学院过程工程研究所 | One kind utilizes magnesite coproduction binder materials and CO2Preparation method and equipment |
CN108503324A (en) * | 2018-05-09 | 2018-09-07 | 步阳集团有限公司 | Modified anti-fire door core board and production method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH659463A5 (en) * | 1982-09-23 | 1987-01-30 | Us Energy | METHOD FOR PRODUCING A CEMENT-LIKE MAGNESIUM GLASS MATERIAL. |
-
1988
- 1988-09-22 DE DE19883832287 patent/DE3832287C1/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH659463A5 (en) * | 1982-09-23 | 1987-01-30 | Us Energy | METHOD FOR PRODUCING A CEMENT-LIKE MAGNESIUM GLASS MATERIAL. |
Non-Patent Citations (2)
Title |
---|
KNOBLAUCH: Bauchemie, 1978, S. 77 * |
PROBST: Handbuch der Betonstein-Industrie, 1962, S. 542/43 * |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0454660A1 (en) * | 1990-04-23 | 1991-10-30 | MAGINDAG Steirische Magnesit-Industrie Aktiengesellschaft | Waterproof and abrasionproof Sorelcement composition for floors and process for the production of such floors |
AT395145B (en) * | 1990-04-23 | 1992-09-25 | Steirische Magnesit Ind Ag | WATER RESISTANT AND ABRASION RESISTANT SOREL CEMENT COMPOSITION FOR FLOORS AND METHOD FOR PRODUCING SUCH A FLOOR |
GR1000416B (en) * | 1990-09-13 | 1992-06-30 | Georgios Sigaras | Incombustible anorganic industrial pavement and method for producing - fabricating it |
WO1995032929A1 (en) * | 1994-05-30 | 1995-12-07 | Baran Advanced Materials (94) Ltd. | Improved water-resistant magnesite cement and process for its manufacture |
DE10113060C2 (en) * | 2000-03-16 | 2003-06-12 | Kaeser Gmbh & Co | Process for the production of castings and combination of materials therefor |
AT413981B (en) * | 2004-08-19 | 2006-08-15 | Styromagnesit Steirische Magne | PUMPABLE SELF-LEVELING MAGNESIAESTRICH |
EP1627861A2 (en) * | 2004-08-19 | 2006-02-22 | Styromagnesit Steirische Magnesitindustrie GmbH | Pumpable selflevelling magnesia flooring composition |
EP1627861A3 (en) * | 2004-08-19 | 2008-06-25 | Styromagnesit Steirische Magnesitindustrie GmbH | Pumpable selflevelling magnesia flooring composition |
CN102898116A (en) * | 2012-11-06 | 2013-01-30 | 南京福臻再生资源科技股份有限公司 | Hydrophobic inorganic gel material and preparation method thereof |
CN102898116B (en) * | 2012-11-06 | 2014-09-10 | 南京福臻再生资源科技股份有限公司 | Hydrophobic inorganic gel material and preparation method thereof |
CN105367034A (en) * | 2015-12-15 | 2016-03-02 | 张家港市盛港绿色防火建材有限公司 | Magnesium oxysulfate board modifying agent and using method thereof |
CN107721218A (en) * | 2017-10-18 | 2018-02-23 | 中国科学院过程工程研究所 | One kind utilizes magnesite coproduction binder materials and CO2Preparation method and equipment |
CN107721218B (en) * | 2017-10-18 | 2020-10-23 | 中国科学院过程工程研究所 | Coproduction of cementing material and CO by using magnesite2Method and apparatus for the preparation of |
CN108503324A (en) * | 2018-05-09 | 2018-09-07 | 步阳集团有限公司 | Modified anti-fire door core board and production method |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
D1 | Grant (no unexamined application published) patent law 81 | ||
8363 | Opposition against the patent | ||
8331 | Complete revocation |