DE685944C - Rapid bonding process for the production of cement-bonded wood wool lightweight panels - Google Patents
Rapid bonding process for the production of cement-bonded wood wool lightweight panelsInfo
- Publication number
- DE685944C DE685944C DEW102252D DEW0102252D DE685944C DE 685944 C DE685944 C DE 685944C DE W102252 D DEW102252 D DE W102252D DE W0102252 D DEW0102252 D DE W0102252D DE 685944 C DE685944 C DE 685944C
- Authority
- DE
- Germany
- Prior art keywords
- cement
- production
- wood wool
- bonding process
- lightweight panels
- 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
- 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
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1022—Non-macromolecular compounds
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
- C04B2103/12—Set accelerators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
Schnellbindeverfahren zur Herstellung von zementgebundenen Holzwolle-Leichthauplatten Es ist bekannt, daß Leichtbauplatten durch Zusammenbringen von ..Zement und Holzwolle und Pressen dieser Mischung hergestellt werden. Bei der Herstellung derartiger Platten müssen der Mischung Haftmittel zugesetzt werden, da Zement allein nicht an den Holzspänen haftet, sondern bei dem Trocknen abbröckelt. Als Haftmittel werden bisher Wasserglas und Calciumchlorid verwendet. Diese Haftmittel haben jedoch gewisse Nachteile. Wasserglas ist verhältnismäßig teuer, und mit Calciumchlorid hergestellte Platten werden sauer und greifen Eisenteile an. Der größte Nachteil dieser Verfahren besteht aber darin, daß die gepreßten Platten etwa 36 Stunden in den Formschalen verbleiben müssen, bis die Masse vollkommen abgebunden ist. Da es andererseits schon lange bekannt ist, das Abbinden von Zement durch Zusatz von Soda zu beschleunigen, hat man auch bei der Herstellung von Leichtbauplatten versucht, durch Soda die Abbindezeit abzukürzen. Diese Versuche sind jedoch fehlgeschlagen, da durch den Sodazusatz die Wirkung der Haftmittel aufgehoben wurde und die Platten beim Entschalen auseinanderfielen.Rapid bonding process for the production of cement-bonded wood wool lightweight panels It is known that lightweight panels by bringing together .. cement and wood wool and pressing this mixture. In the manufacture of such panels Adhesive agents must be added to the mixture, as cement alone does not adhere to the wood chips sticks, but crumbles as it dries. So far, water glass has been used as the adhesive and calcium chloride are used. However, these adhesives have certain disadvantages. Water glass is relatively expensive and plates made with calcium chloride become acidic and attack iron parts. However, the main disadvantage of this method is that that the pressed panels must remain in the shell molds for about 36 hours, until the mass is completely set. On the other hand, it has been known for a long time is to accelerate the setting of cement by adding soda, one also has in the manufacture of lightweight panels tries to shorten the setting time by using soda. However, these attempts have failed because the addition of soda reduces the effect of the Adhesive was picked up and the panels fell apart while demoulding.
Es wurde nun gefunden, daß es auch Haftmittel gibt, die trotz des Sodazusatzes ihre Wirkung nicht verlieren. Es handelt sich um Abfallstoffe, die bei der Herstellung von Weinsäure anfallen und die im wesentlichen aus Gips und toten Hefezellen bestehen.It has now been found that there are also adhesives that, in spite of the Soda addition does not lose its effect. These are waste materials that incurred in the production of tartaric acid and which essentially consists of gypsum and dead yeast cells exist.
Verfahrensgemäß wird so gearbeitet, da1J die Holzwolle vor dem Anmischen mit Zement kurz in -eine z, 5 obige Aufschlämmung der Abfallstoffe gebracht wird. Die Haftfähigkeit ist bei diesem Verfahren ebenso gut wie bei den bekannten Verfahren mit Wasserglas und Calciumchlorid. Setzt man' der Zementmasse Soda zu, so wird das Abbinden derartig beschleunigt, daß die fertigen Platten schor. nach 8 Minuten aus den Schalen entnommen %verden können. Dies bedeutet einen ungeheuren Zeitgewinn, da, wie bereits angegeben, die Platten bisher 34 Stunden in den Schalen verbleiben mußten. Dieser Zeitgewinn bringt gleichzeitig, eine große Ersparnis an Schalenmaterial und an Raum mit sich.According to the procedure, work is carried out in such a way that the wood wool is removed before mixing is briefly brought into a slurry of waste materials above with cement. The adhesion is just as good in this method as in the known methods with water glass and calcium chloride. If you add soda to the cement mass, it becomes Setting accelerated so that the finished panels sheared. off after 8 minutes % can be removed from the bowls. This means a tremendous gain in time, because, as already stated, the plates so far 34 hours in the Shells had to remain. At the same time, this gain in time brings great savings in shell material and in space with itself.
Ausführungsbeispiel i Für eine i1/2 cm starke Leichtbauplatte in Normengröße
von 5o X Zoo cm werden benötigt: 3kg Holzwolle, q.kg Zement, 71 einer
2,5 %igen AbfaIlstoffaufschlämmung und 700.- Nag C 03 wasserfrei.
Man tränkt die lose Holzwolle mit der z,5oloigen Abfallstoffaufschlämmung, läßt
abtropfen und mischt mit der angegebenen Zementmenge. Im A.nschluß daran wird die
calcinierte Soda eingearbeitet. Die Masse wird in eine Sehale entsprechender Größe
gegeben, kurz gepreßt; nach 8 Minuten ist die Abbindung vollendet, und die fertige
Platte kann entschalt werden. Ausführungsbeispiel 2 Es wird ebenso verfahren wie
bei Beispiel i, q h ohne Zusatz von Soda. Die Abbinde-#reg,#V,eträgt 24 bis 36 Stunden.
Gegenüber 25
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEW102252D DE685944C (en) | 1937-11-06 | 1937-11-06 | Rapid bonding process for the production of cement-bonded wood wool lightweight panels |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEW102252D DE685944C (en) | 1937-11-06 | 1937-11-06 | Rapid bonding process for the production of cement-bonded wood wool lightweight panels |
Publications (1)
Publication Number | Publication Date |
---|---|
DE685944C true DE685944C (en) | 1939-12-29 |
Family
ID=7615718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEW102252D Expired DE685944C (en) | 1937-11-06 | 1937-11-06 | Rapid bonding process for the production of cement-bonded wood wool lightweight panels |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE685944C (en) |
-
1937
- 1937-11-06 DE DEW102252D patent/DE685944C/en not_active Expired
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