DE327907C - Process for the production of a porous cement or a porous, cementitious binder - Google Patents
Process for the production of a porous cement or a porous, cementitious binderInfo
- Publication number
- DE327907C DE327907C DE1919327907D DE327907DD DE327907C DE 327907 C DE327907 C DE 327907C DE 1919327907 D DE1919327907 D DE 1919327907D DE 327907D D DE327907D D DE 327907DD DE 327907 C DE327907 C DE 327907C
- Authority
- DE
- Germany
- Prior art keywords
- cement
- porous
- production
- cementitious binder
- binder
- 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
- C04B28/02—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
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)
Description
Verfahren zur Herstellung eines porösen Zements oder, eines porösen, zementartigen Bindemittels. Die Erfindung bezieht sich auf ein Verfahren 'zur ' Herstellung eines porösen Zements oder eines- porösen zementartigen Bindemittels und besteht darin, daß dem Zement oder dem zementartigen Bindemittel ein Zusatz von MetallpuIvern beigemischt wird, welche mit dem Zement "allein--bei gewöhnlicher Temperatur nicht, sondern erst bei beträchtlicher Erwärmung reagieren, z. B. ein Zusatz von Zinkstaub, und daß außerdem dem Zement oder dem zementartigen Bindemittel geringe Mengen stark mit ihm reagierender Salze oder Basen, wie Ca C12, Mg C12, Nag C03, KOH, Na OH, zugemischt werden, welche infolge ihrer starken Einwirkung -auf das Bindemittel eine beträchtliche -Temperaturerhöhung während des Abbindens hervorrufen. Sobald die Temperaturerhöhung eintritt, fängt der Kalk des Bindemittels an, mit dem Metallstaub zu reagieren. Infolge der Wasserstoffentwicklung wird das Bindemittel langsam mit - Wasserstoffbläschen durchsetzt, wodurch ein Aufblasen des Bindemittels herbeigeführt wird. Da die Temperaturerhöhung aber nur eine bestimmte Zeit anhält, und dann wieder vergeht, so wird entsprechend diiesern Temperaturabfall die Gasentwicklung selbsttätig abgeschaltet, so daß das Bindemittel nunmehr in Ruhe abbinden kann. Die Folge dieses ungestörten Abbindens ist, daß eine hohe Festigkeit des Bindemittels erzielt wird. -Darin besteht der Fortschritt des neuen Verfahrens gegenüber der bekannten Vermischung von Zement u. dgl. mit Kalkhydrat und Metallpulver, das bereits bei mäßiger Erwärmung, wie sie bei dem normalen Abbinden des Zementes auftritt mit dem Zement reagiert.Process for the production of a porous cement or, a porous, cementitious binder. The invention relates to a method 'for' Production of a porous cement or a porous cementitious binder and consists in adding an additive to the cement or cementitious binder of metal powders is added, which with the cement "alone - with ordinary Do not react to the temperature, but only when the temperature rises considerably, e.g. B. a Addition of zinc dust, and that also the cement or the cementitious binder small amounts of salts or bases that react strongly with it, such as Ca C12, Mg C12, Nag C03, KOH, Na OH, are added, which as a result of their strong influence -A considerable temperature increase on the binder during setting cause. As soon as the temperature increase occurs, the lime in the binder catches to react with the metal dust. As a result of the evolution of hydrogen that will Binder slowly interspersed with - hydrogen bubbles, causing an inflation the binder is brought about. Since the temperature increase is only a certain If time lasts, and then passes again, this temperature drop will correspond accordingly the gas development automatically switched off, so that the binder is now at rest can set. The consequence of this undisturbed setting is that it has a high level of strength of the binder is achieved. -This is the progress of the new procedure compared to the known mixing of cement and the like with hydrated lime and metal powder, this already with moderate warming, as it is with the normal setting of the cement occurs with the cement reacts.
Beispielsweise wird bei dem neuen Verfahren dem Zement z Prozent Zinkstaub beigemischt und in dem zum Anmachen des Zements dienenden Wasser z Prozent Chlorkalzium aufgelöst.For example, in the new process, the cement becomes z percent zinc dust mixed in and in the water used to make the cement z percent calcium chloride dissolved.
Je nach dem Verwendungszweck können dem Zement Zuschlagstoffe, wie-Sand, Kiesel, Schotter o. dgl., beigemischt werden, und es können durch- die Wahl und die Menge der Zuschlagstoffe die Festigkeit, das Raumgewicht und die sonstigen Eigenschäften des Betons verschieden. geändert werden. Die so erhaltenen Betons haben ein geringes Raumgewicht, sind nagelbar, leicht zu sägen und zu durchbrechen; leiten den Schall und die Wärme schlecht und sind leicht und billig herzustellen.Depending on the intended use, aggregates such as sand, Pebbles, crushed stone or the like., Are added, and it can through the choice and the amount of aggregates, the strength, the density and the other properties of concrete. be changed. The concretes thus obtained have a low one Volume weight, are nailable, easy to saw and break through; conduct the sound and heat poor and are easy and cheap to manufacture.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE327907T | 1919-05-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE327907C true DE327907C (en) | 1920-10-16 |
Family
ID=6185451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1919327907D Expired DE327907C (en) | 1919-05-09 | 1919-05-09 | Process for the production of a porous cement or a porous, cementitious binder |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE327907C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1059335B (en) * | 1951-02-16 | 1959-06-11 | Alucrete Const Ltd | Process for producing a cell cement or plaster of paris |
US4736706A (en) * | 1985-06-07 | 1988-04-12 | Mars, Inc. | Animal litter and process for the production thereof |
-
1919
- 1919-05-09 DE DE1919327907D patent/DE327907C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1059335B (en) * | 1951-02-16 | 1959-06-11 | Alucrete Const Ltd | Process for producing a cell cement or plaster of paris |
US4736706A (en) * | 1985-06-07 | 1988-04-12 | Mars, Inc. | Animal litter and process for the production thereof |
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