CH379998A - Process for the production of lightweight building blocks - Google Patents

Process for the production of lightweight building blocks

Info

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
Application number
CH7927659A
Other languages
German (de)
Original Assignee
Hunziker & Cie Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hunziker & Cie Ag filed Critical Hunziker & Cie Ag
Priority to CH7927659A priority Critical patent/CH379998A/en
Publication of CH379998A publication Critical patent/CH379998A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/18Compositions 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/60Production 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)

PATENTANSPRUCH I Verfahren zur Herstellung von Leichtbausteinen durch Vermischen von Blähton verschiedener Kör nungen mit Kalkhydrat und Sand, Verformen der Mischung zu Bausteinen und Härten der geformten Stücke unter Dampfdruck, dadurch gekennzeichnet, dass 40-50 Vol. % der insgesamt zur Verwendung gelangenden Blähtankörner eine zwischen 8 und 15 mm und- 50-60 Vol. % der B'lähtonkörner eine zwischen 1 und 8 mm liegende. Korngrösse besitzen, PATENT CLAIM I A method for the production of lightweight building blocks 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, characterized in that 40-50% by volume of the total expanded tank grains used are between 8 and 15 mm and 50-60% by volume of the expanded clay grains between 1 and 8 mm. Have grain size, und dass der Sand in feinvermahltem Zustand zu gesetzt wird. UNTERANSPRUCH Verfahren nach Patentanspruch, dadurch gekenn zeichnet, dass sich die Volumenprozente der eine Korngrösse zwischen 1 und 8 mm besitzenden Bläh tonkörner etwa wie folgt aufteilen 8-11 Vol. % Körner einer Grösse von 1-2 mm 15-17 Vol. % Körner einer Grösse von 2-4 mm 13-l5 Vol. % Körner einer Grösse von 4-6 mm und 14-16 Vol. % Körner einer Grösse von 6-8 mm PATENTANSPRUCH 11 Leichtbaustein, and that the sand is added in a finely ground state. SUBCLAIM Method according to claim, characterized in that the volume percent of the expanded clay grains having a grain size between 1 and 8 mm are divided roughly as follows: 8-11% by volume of grains of a size of 1-2 mm 15-17% by volume of one grain Size of 2-4 mm 13-15 vol.% Grains of a size of 4-6 mm and 14-16 vol.% Grains of a size of 6-8 mm PATENT CLAIM 11 lightweight building block, hergestellt nach dem Verfahren gemäss Patentanspruch 1. produced according to the method according to claim 1.
CH7927659A 1959-10-10 1959-10-10 Process for the production of lightweight building blocks CH379998A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (6)

* Cited by examiner, † Cited by third party
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

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