DE295953C - - Google Patents
Info
- Publication number
- DE295953C DE295953C DENDAT295953D DE295953DA DE295953C DE 295953 C DE295953 C DE 295953C DE NDAT295953 D DENDAT295953 D DE NDAT295953D DE 295953D A DE295953D A DE 295953DA DE 295953 C DE295953 C DE 295953C
- Authority
- DE
- Germany
- Prior art keywords
- magnesite
- portland cement
- stone
- layer
- wood flour
- 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.)
- Active
Links
- 239000000203 mixture Substances 0.000 claims description 8
- 239000004575 stone Substances 0.000 claims description 7
- 239000011398 Portland cement Substances 0.000 claims description 6
- 239000011776 magnesium carbonate Substances 0.000 claims description 6
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 6
- ZLNQQNXFFQJAID-UHFFFAOYSA-L Magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 5
- 235000013312 flour Nutrition 0.000 claims description 5
- 239000002023 wood Substances 0.000 claims description 5
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L MgCl2 Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 4
- 239000002969 artificial stone Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910001651 emery Inorganic materials 0.000 claims description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 229910052904 quartz Inorganic materials 0.000 claims description 2
- 239000010453 quartz Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 8
- 235000011121 sodium hydroxide Nutrition 0.000 description 4
- -1 chlorine magnesium Chemical compound 0.000 description 3
- 239000004567 concrete Substances 0.000 description 2
- UKMPWHAWRCCJFK-UHFFFAOYSA-K [OH-].[Mg+2].[Cl+].[OH-].[OH-] Chemical compound [OH-].[Mg+2].[Cl+].[OH-].[OH-] UKMPWHAWRCCJFK-UHFFFAOYSA-K 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 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
- 239000004568 cement Substances 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000011373 stamped concrete Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
- B24D3/12—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic water-setting, e.g. concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
Vr 295953 -KLASSE 80 δ. GRUPPE Vr 295953 - CLASS 80 δ. GROUP
Die Herstellung künstlicher Mühlsteine aus Stampfbeton erfolgte bislang in der Weise, daß gekörntes Steinmaterial (Schmirgel, Quarz o. dgl.) unter Zusatz einer Chlormagnesiumlauge mit Magnesit (Sorelzement) vermischt und in Formen gepreßt wurde. Diese Masse wird in einer bestimmten abmahlbaren Stärke mit einer nicht wirksamen, als Ballast dienenden Betonschicht zu einem Mühlstein vereinigt, während bei natürlichen Mühlsteinen, die auch nur eine bestimmte abmahlbare Stärke zu besitzen pflegen, die Ballastdecke aus einer Mischung von Portlandzement und granuliertem Steinmaterial besteht. Es war nun bislang nicht möglich, die abmahlbare Kunststeinmischung mit einer Portlandzement-Betonmischung oder auch nur mit einer Gipsdecke zu verbinden, weil die Chlormagnesiumlauge der abmahlbaren Steinschicht die Bindekraft des Portlandzementes bzw. des Gipses der Ballas'tdecke aufhebt. Nach der vorliegenden Erfindung wird eine haltbare Verbindung des Portlandzementes mit der erwähnten abmahlbaren Kunstmasse dadurch ermöglicht, daß eine Zwischenlage, bestehend in einer Mischung von Magnesit, Chlormagnesiumlauge und Holzmehl, verwendet wird. Hierbei wird die zersetzende Chlormagnesiumlauge durch das Holzmehl aufgesaugt und bei dem Einstampfen in die Form vom Holzmehl nur derart wenig Chlormagnesiumlauge wieder abgegeben, daß die Bindekraft des Portlandzementes darunter nicht leidet. Bei der Herstellung wird in rascher Reihenfolge zunächst die für die abmahlbare Steinstärke bestimmte übliche Kunststeinmasse, darauf die an sich ebenfalls bekannte Holzmehl - Magnesit - Chlormagnesiumlaugemischung und schließlich die Portlandzementmischung in die Form eingestampft. Die nach diesem Verfahren hergestellten Steine sind wetterbeständig und wegen der Verwendung geringer Mengen an Magnesit, der größtenteils aus dem Auslande bezogen werden muß, wesentlich billiger.The production of artificial millstones from stamped concrete has so far been carried out in the way that granular stone material (emery, quartz or the like) with the addition of a magnesium chloride solution mixed with magnesite (sorel cement) and pressed into molds. This mass is milled in a certain strength combined with an ineffective concrete layer serving as ballast to form a millstone, while with natural millstones, which only have a certain grindable strength maintain the ballast blanket made from a mixture of portland cement and granulated Stone material is made. So far it was not possible to use the grindable artificial stone mixture with a Portland cement-concrete mix or even just with a plaster ceiling to connect, because the chlorine magnesium lye of the grindable stone layer the binding force of the Portland cement or the plaster of paris of the ballast ceiling. According to the present Invention is a durable combination of Portland cement with the abovementioned grindable Artificial mass made possible by the fact that an intermediate layer consisting of a mixture of Magnesite, chlorine magnesium hydroxide and wood flour is used. Here the decomposing Chlorine magnesium lye is absorbed by the wood flour and when it is pulped into the Form of wood flour only so little chlorine magnesium lye released again that the binding power of the Portland cement does not suffer. During production, in quick sequence first the usual artificial stone mass intended for the grindable stone thickness, then the well-known wood flour - magnesite - chloromagnesium lye mixture and finally pulped the portland cement mixture into the mold. The stones produced by this process are weatherproof and because of the use small amounts of magnesite, most of which have to be obtained from abroad, much cheaper.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE295953C true DE295953C (en) |
Family
ID=550388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT295953D Active DE295953C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE295953C (en) |
-
0
- DE DENDAT295953D patent/DE295953C/de active Active
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