CH379998A - Process for the production of lightweight building blocks - Google Patents
Process for the production of lightweight building blocksInfo
- Publication number
- CH379998A CH379998A CH7927659A CH7927659A CH379998A CH 379998 A CH379998 A CH 379998A CH 7927659 A CH7927659 A CH 7927659A CH 7927659 A CH7927659 A CH 7927659A CH 379998 A CH379998 A CH 379998A
- Authority
- CH
- Switzerland
- Prior art keywords
- grains
- volume
- size
- building blocks
- expanded clay
- 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
- C04B28/18—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 mixtures of the silica-lime type
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Description
Verfahren zur Herstellung von Leichtbausteinen Es ist ein Verfahren zur Herstellung eines Leicht kalksandsteines bekannt, bei welchem eine poröse Sintermasse mit Kalk als. Bindemittel vermischt, ver formt und unter Dampfdruck gehärtet wird, wobei man als poröse Sintermasse Blähton allein oder, zur Erreichung einer grösseren Festigkeit, unter Zu mischung von ungemahlenern Sand mit Kalk ab löscht, die entstandene Mörtelmasse zu Baukörpern verformt und in Kesseln unter Dampfdruck härtet.
Zwar erhält man nach dieser Methode Baukörper relativ guter Qualität, indessen lässt ihre Festigkeit immer noch sehr zu wünschen übrig, wobei auch die mittlere Dichte dieser Baukörper im Verhältnis zur erzielten Festigkeit noch relativ hoch ist.
überraschenderweise wurde nun gefunden, dass man Leichtbausteine guter Festigkeit durch Ver mischen von Blähton verschiedener Körnungen mit Kalkhydrat und Sand, Verformen der Mischung zu Bausteinen und Härten der geformten Stücke unter Dampfdruck herstellen kann, wenn 40-50 Vol. % der insgesamt zur Verwendung gelangenden Blähtonkör- ner eine zwischen 8 und 15 mm und 50-60 Vol. der Bl'ähtonkörner eine zwischen 1 und 8 mm lie gende Korngrösse besitzen,
und wenn der Sand in feinvermahltem Zustand zugesetzt wird.
Eine bevorzugte Ausführungsform des erfindungs- gemässen Verfahrens. besteht darin, dass man unter den eine Korngrösse zwischen 1-8 mm aufweisenden Blähtonkörnern noch eine Unterteilung vornimmt, indem man, bezogen auf das Gesamtschüttvolumen der Blähtonkörner, etwa 10,2 Vol. % Körner einer Grösse von 1-2 mm 16,5 Vol.% Körner einer Grösse von 2-4 mm 14,2 Vol. % Körner einer Grösse von 4-6 mm 15,
1 Vol. % Körner einer Grösse von 6-8 mm für die Herstellung der Leichtbausteine verwendet, wobei der Rest auf 100 Vol.% auf diejenigen Bl'äh- tonkörner entfällt, die 8-11 mm gross sind.
Die Fabrikation der Leichtbausteine beliebiger Form erfolgt z. B. nach an sich bekannten Methoden. Hierbei werden in bekannter, für eine gute Abbin- dung ausreichender Menge der zuvor zweckmässig in einer Kugelmühle feingemahlene Silikatsand und der ebenfalls, feinst-gemahlene Kalkhydrat mit einer der obigen Blähtonkornmischung in einer geeigneten Vorrichtung, z. B. einer Trommel, vermischt, worauf man in bekannter Weise verformt und schliesslich unter Wasserdampfdruck härtet.
Im Rahmen der Erfindung wird unter Blähton ein z. B. in einem Drehofen bis fast zu seiner Sinter temperatur erhitzter Ton verstanden, ein Vorgang, der geblähte, innen poröse Tonkügelchen ergibt.
Als feingemahlen gilt ein Sand, bei welchem min destens 50 % durch ein Sieb mit einer Maschenweite von 1 mm geht.
Die Mahlfeinheit des Kalkhydrats beträgt 10 bis 15 % auf dem Maschensieb.
Method for the production of lightweight building blocks A method for the production of a lightweight sand-lime brick is known, in which a porous sintered mass with lime as. Binder is mixed, deformed and hardened under steam pressure, whereby expanded clay alone or, to achieve greater strength, with the addition of unground sand is extinguished with lime as a porous sintered mass, the resulting mortar mass is deformed into structures and hardened in boilers under steam pressure.
Although building structures are of relatively good quality with this method, their strength still leaves a lot to be desired, and the average density of these structures in relation to the strength achieved is still relatively high.
Surprisingly, it has now been found that lightweight building blocks of good strength can be produced by mixing expanded clay of different grain sizes with hydrated lime and sand, shaping the mixture into building blocks and hardening the shaped pieces under steam pressure if 40-50% by volume of the total expanded clay body used - ner between 8 and 15 mm and 50-60 vol. of the expanded clay grains have a grain size between 1 and 8 mm,
and when the sand is added in a finely ground state.
A preferred embodiment of the method according to the invention. is that a subdivision is made among the expanded clay grains with a grain size between 1-8 mm by adding about 10.2% by volume of grains with a size of 1-2 mm to 16.5% by volume, based on the total bulk volume of the expanded clay grains .% Grains of a size of 2-4 mm 14.2% by volume grains of a size of 4-6 mm 15,
1% by volume of grains 6-8 mm in size are used for the production of the lightweight building blocks, the remainder to 100% by volume being accounted for by those expanded clay grains that are 8-11 mm in size.
The manufacture of lightweight building blocks of any shape takes place, for. B. by methods known per se. Here, in a known amount sufficient for good setting, the previously finely ground silicate sand, suitably in a ball mill, and the likewise finely ground hydrated lime are mixed with one of the above expanded clay grain mixtures in a suitable device, e.g. B. a drum, mixed, whereupon it is deformed in a known manner and finally cured under steam pressure.
In the context of the invention, a z. B. understood in a rotary kiln heated clay almost to its sintering temperature, a process that results in expanded, internally porous clay balls.
Finely ground sand is defined as having at least 50% of it through a sieve with a mesh size of 1 mm.
The grinding fineness of the hydrated lime is 10 to 15% on the mesh sieve.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH7927659A CH379998A (en) | 1959-10-10 | 1959-10-10 | Process for the production of lightweight building blocks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH7927659A CH379998A (en) | 1959-10-10 | 1959-10-10 | Process for the production of lightweight building blocks |
Publications (1)
Publication Number | Publication Date |
---|---|
CH379998A true CH379998A (en) | 1964-07-15 |
Family
ID=4537087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH7927659A CH379998A (en) | 1959-10-10 | 1959-10-10 | Process for the production of lightweight building blocks |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH379998A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3808160A1 (en) * | 1988-03-11 | 1989-09-21 | Reinhard Schneider | Light-weight lime-sand brick |
DE3816686A1 (en) * | 1988-05-17 | 1989-11-30 | Dennert Kg Veit | Thermally insulating wall component and process for the production thereof |
DE19703777A1 (en) * | 1997-02-01 | 1998-08-06 | Lias Franken Leichtbau Gmbh | Lime sandstone with light aggregate |
EP3945083A1 (en) * | 2020-07-27 | 2022-02-02 | Xella Technologie- und Forschungsgesellschaft mbH | Lime sand moulding and method for the production of same |
-
1959
- 1959-10-10 CH CH7927659A patent/CH379998A/en unknown
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3808160A1 (en) * | 1988-03-11 | 1989-09-21 | Reinhard Schneider | Light-weight lime-sand brick |
DE3816686A1 (en) * | 1988-05-17 | 1989-11-30 | Dennert Kg Veit | Thermally insulating wall component and process for the production thereof |
DE3816686C2 (en) * | 1988-05-17 | 1998-07-16 | Dennert Kg Veit | Thermally insulating wall component and method for its production |
DE19703777A1 (en) * | 1997-02-01 | 1998-08-06 | Lias Franken Leichtbau Gmbh | Lime sandstone with light aggregate |
DE19703777C2 (en) * | 1997-02-01 | 2000-05-25 | Lias Franken Leichtbau Gmbh | Lime sandstone free of quartz sand with light aggregate |
EP3945083A1 (en) * | 2020-07-27 | 2022-02-02 | Xella Technologie- und Forschungsgesellschaft mbH | Lime sand moulding and method for the production of same |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3414967A1 (en) | LIGHT CERAMIC MATERIAL FOR CONSTRUCTION PURPOSES, METHOD FOR THE PRODUCTION AND USE THEREOF | |
DE2842673A1 (en) | LIGHTWEIGHT, POROESE AGGREGATE AND METHOD FOR ITS MANUFACTURING | |
DE69627897T2 (en) | HEAT-INSULATING COMPONENTS | |
CH379998A (en) | Process for the production of lightweight building blocks | |
DE2718469C2 (en) | Ceramic insulating bricks and processes for their manufacture | |
DE2040484B2 (en) | USE OF A BINDING AGENT FOR THE MANUFACTURING OF THERMAL TREATMENT AND / OR STEAM CURING COMPONENTS AND METHOD FOR MANUFACTURING A BINDING AGENT TO BE USED IN THIS WAY | |
DE642466C (en) | Process for the production of a binder | |
DE821168C (en) | Process for the production of bricks, roof tiles, tiles u. like | |
DE19703777C2 (en) | Lime sandstone free of quartz sand with light aggregate | |
AT254024B (en) | Process for the production of building elements or a floor and ceiling fill material | |
DE546273C (en) | Process for the production of heat-insulating moldings | |
DE635559C (en) | Process for the production of porous lightweight stone masses | |
AT402729B (en) | Water-resistant Sorel's cement composition | |
AT347319B (en) | FINE-WIDE LIGHT AGGREGATE FOR CONCRETE LOW DENSITY AND HIGH STRENGTH AND PROCESS FOR THEIR PRODUCTION | |
DE874873C (en) | Manufacture of building elements | |
DE637812C (en) | Fireproof fabric | |
DE102004023741B4 (en) | Brick, mass and method of making the same | |
AT123505B (en) | Method of firing bricks of high strength. | |
AT128643B (en) | Process for the production of clay-bound products. | |
DE3020006C2 (en) | Process for the production of moldings from the airborne dust from power plant furnaces and / or heating plant furnaces | |
AT140465B (en) | Process for the production of artificial high density refractories from non-plastic material. | |
DE860622C (en) | Process for the production of shaped stones, mainly roof panels | |
AT130246B (en) | Process for the production of artificial marble. | |
AT204466B (en) | Process for the production of lightweight concrete | |
EP0043172B1 (en) | Method of manufacturing bricks |