DE882826C - Process for increasing the strength and for faster setting of cellular concrete bodies produced from foam concrete by the casting process - Google Patents

Process for increasing the strength and for faster setting of cellular concrete bodies produced from foam concrete by the casting process

Info

Publication number
DE882826C
DE882826C DEP25A DEP0000025A DE882826C DE 882826 C DE882826 C DE 882826C DE P25 A DEP25 A DE P25A DE P0000025 A DEP0000025 A DE P0000025A DE 882826 C DE882826 C DE 882826C
Authority
DE
Germany
Prior art keywords
concrete
water
strength
increasing
foam
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
Application number
DEP25A
Other languages
German (de)
Inventor
Philipp Dr-Ing Albrecht
Gerhard Mix
Franz Pelikan
Helmar Pelikan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEP25A priority Critical patent/DE882826C/en
Application granted granted Critical
Publication of DE882826C publication Critical patent/DE882826C/en
Expired legal-status Critical Current

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
    • C04B28/02Compositions 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
    • 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
    • C04B40/00Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028Aspects relating to the mixing step of the mortar preparation
    • C04B40/006Aspects relating to the mixing step of the mortar preparation involving the elimination of excess water from the mixture

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)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Description

Verfahren zur Erhöhung der Festigkeit und zum schnelleren Abbinden von aus Schaumbeton nach dem Gießverfahren hergestellten Zellenbetonkörpern Es ist bekannt, aus Schaumbeton, der in bekannter Weise aus einem Schaummittel bei Zugabe von Zement und Füllstoffen erzeugt wird, im Gießverfahren Zellenbetonkörper herzustellen. Hierbei muß dem Schaumbeton, um ihn vergießen zu können, eine über die zum guten Abbinden und Erhärten des gegossenen Zellenbetonkörp"e,rs benötigte Wassermenge hinausgehende Wassermenge zugesetzt werden. Dieser unvermeidliche Wasserübe:rschuß bewirkt aber erfahrungsgemäß eine langsame Erhärtung und eine geringere Endfestigkeit des gegossenen Zellenbetonstückes.Process for increasing strength and for faster setting of cell concrete bodies made from foam concrete by the casting process It is known from foam concrete, which in a known manner from a foaming agent when added is produced by cement and fillers, to produce cellular concrete bodies in the casting process. In order to be able to pour it, the foam concrete has to have one for the better Setting and hardening of the poured cellular concrete body "e, rs required amount of water additional amount of water can be added. This inevitable water shot but experience has shown that it hardens slowly and has a lower final strength of the cast cellular concrete piece.

Um idiesei Nachteile zu beheben, werden nach der Erfindung poröse, feste, wasseraufsangende Zuschlagsstoffe, z. B. rheinischer Bims, poröse Hochofenschlacke, kurz vor oder erst während des Vergießens der flüssigen Schaumbetonmasse in einer solchen Menge zugemischt, daß,das zur Abbindung nicht erforderliche Wasser aufgesaugt wird.In order to remedy these disadvantages, porous, solid, water-absorbing aggregates, e.g. B. Rhenish pumice, porous blast furnace slag, shortly before or only during the pouring of the liquid foam concrete mass in a mixed in such an amount that the water not required for setting is absorbed will.

Zufolget ihres porösen wasseraufsaugenden Gefüges, also durch Kapillarwirkung, saugen diese Zuschlagsstoffe bestimmte Mengen Wasser aus der eigentlichen Betonmasse rasch auf. Sie entziehen daher ,durch ihre Einlagerung in ,die Gießmasse dem flüssigen Betonbrei schon bei Beginn der Erhärtung, wenn auch nur vorübergehend, :die überschüssige Wassermenge, @d. h. jene Wassermenge, die zum Erreichen eines Fließens der Schaumbetonmasse über die zur Abbindung des Zementes notwendige optimale Wassermenge noch dem Schaumbeton zugesetzt werden muß. Während der weiteren Erhärtungs:dauer geben dann die Zuschlagsstoffe den au@f-espeicherten WasserÜberschuß wieder an @die-Betonmasse und durch Austrocknen nach außen hin ab. Die allmähliche Wasserrückgabe begünstigt gleichfalls erfahrungsgemäß den weiteren Erhärtüngsvorgang,des Zellenbestonikörpers.' Das Zugeben der Zuschlagsstoffe darf erst kurz vor dem Vergießen oder während dieses Vorganges erfolgen, z. B. idurcih Einstreuen in den ausfließen-,den Strom ides Schaumbetons beim Gießen. Werden die Stoffe zu früh zugegeben, @so wird infolge des vorzeitigen Wasserentzuges die Schara.mbetonmasse steif und verliert ihre Gießfähigkeit. Die Menge ider Zuschlagsstoffe soll entsprechend ihrer Wasseraufnahmefähnglceit so .abgestimmt werden, @daß möglichst das gesamte überschüssige -Wasser, das nur zur Gießfähigkeit,der Schaum@betonmasse dient; von @d'en Zuschlagsstoffen in angemessener Zeit aufgenommen wind..As a result of their porous water-absorbent structure, i.e. through capillary action, These aggregates suck certain amounts of water out of the actual concrete mass quickly on. Therefore, by being embedded in them, they remove the casting compound from the liquid Concrete slurry at the start of hardening, even if only temporarily: the excess Amount of water, @d. H. the amount of water required to achieve flow of the foam concrete mass about the optimal amount of water necessary to set the cement, plus the foam concrete must be added. The aggregates then give during the further hardening period the from the stored excess water back to the concrete mass and by drying out towards the outside. The gradual return of water favors experience has also shown the further hardening process, the cell constituent body. ' The addition of the aggregates must only shortly before or during the pouring Process take place, z. B. idurcih sprinkling in the outflow, the stream ides foam concrete when pouring. If the substances are added too early, @so will be due to the premature Withdrawal of water, the Schara.mbeton mass stiff and loses its pourability. the The amount of the aggregates should be adjusted according to their water absorption capacity be, @ that if possible, the entire excess water, which is only for pourability, the Foam @ concrete compound is used; absorbed by @ d'en aggregates in a reasonable time wind..

Es ist bekannt, aus Zement mit Hilfe gasbildender Stoffe, die in einer aus Öl und Wasser besteheinden Emulsion dem Zement beigefügt werden, und Zugabe von Wasserglas als Verdickungsmittel eine feinporige Zementmasse herzustellen und, diiese zur Erzeugung von B:ausbainen mit größerem Raumgewicht mit porösen Füllstoffen zu vermischen.It is known from cement with the help of gas-forming substances in a consisting of oil and water, emulsion is added to the cement, and adding using water glass as a thickening agent to produce a fine-pored cement mass and, these for the production of B: ausbainen with a larger density with porous fillers to mix.

Es liegt hier ein Herstellungsverfahren für Beton vor, bei dem -der Zement in Form einer feinporigen Masse zu den übrigen Bestandteilen ides Betons zugegeben wimd. Nach ider Erfindung wird einer durch Verwendung von SchaummitteIn fhergestellten gießfähigen Betonmasse ein Sonderziusdhl@agsstoff in bestimmter Menge und zeitlich festgelegt beügefügt, der dias die Gießfähigkeit des Betons bewirkende, vorher zugesetzte Wässer aufsaugt.There is a manufacturing process for concrete in which -der Cement in the form of a fine-pored mass to the other components of the concrete admittedly wimd. According to the invention, one is made by using foam agent The pourable concrete mass produced is a special amount of special ziusdhl @ agsstoff and attached in a timed manner, the dias effecting the pourability of the concrete, absorbs previously added water.

Claims (1)

PATENTANSPRUCH: Verfahren zur Erhöhung der Festigkeit und zum schnellerenAbbinden von aus Schaumbeton nach dem Gießverfahren hergestellten Zellenbetonkö.rpern, dadurch gekennzeichnet, idaß der gußfertigen Betonmasse kurz vor oder -bei ihrem Vergießen feste, poröse, wasseraufsaugende Zuschlagsstoffe oder Mischungen dieser in solcher Menge zugesetzt werden, duß .dfas zur Abbin@dung nicht erforderliche Wasser aufgesaugt wind. Angezogene Druckschriften: Deutsche Patentschriften Nr. 46$ 66;q., 5019 239, 574 793; Graf, Gasbeton, Schaumbeton, Leichtkalkbeton, 1'949, S. 49 'bis 51.PATENT CLAIM: Process for increasing the strength and for faster setting of cellular concrete bodies made of foam concrete by the casting process, characterized in that solid, porous, water-absorbent aggregates or mixtures of these are added in such quantities to the ready-to-cast concrete mass shortly before or during its casting, duss .dfas not required for setting water sucked up wind. Cited publications: German Patent Specifications No. 46 $ 66; q., 5019 239, 574 793; Graf, aerated concrete, foam concrete, lightweight lime concrete, 1'949, p. 49 'to 51.
DEP25A 1949-10-08 1949-10-08 Process for increasing the strength and for faster setting of cellular concrete bodies produced from foam concrete by the casting process Expired DE882826C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP25A DE882826C (en) 1949-10-08 1949-10-08 Process for increasing the strength and for faster setting of cellular concrete bodies produced from foam concrete by the casting process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP25A DE882826C (en) 1949-10-08 1949-10-08 Process for increasing the strength and for faster setting of cellular concrete bodies produced from foam concrete by the casting process

Publications (1)

Publication Number Publication Date
DE882826C true DE882826C (en) 1953-07-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEP25A Expired DE882826C (en) 1949-10-08 1949-10-08 Process for increasing the strength and for faster setting of cellular concrete bodies produced from foam concrete by the casting process

Country Status (1)

Country Link
DE (1) DE882826C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1135815B (en) * 1958-07-22 1962-08-30 Rer Pol Techn Fritz Bohle Dipl Process for the production of insulating bodies
DE3204166A1 (en) * 1982-02-06 1983-08-18 Johann Wilhelm 5472 Plaidt Rollmann Concrete composition for a masonry unit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE468664C (en) * 1926-06-20 1930-05-12 Alex Derichsweiler Dipl Ing Process for the production of fine-pored insulating cement stones
DE509239C (en) * 1927-11-11 1930-10-06 Torkret Ges M B H Process for the production of fine-pored insulating cement stones
DE574793C (en) * 1928-05-06 1933-04-20 I G Farbenindustrie Akt Ges Process for the production of porous building materials from hydraulic binders

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE468664C (en) * 1926-06-20 1930-05-12 Alex Derichsweiler Dipl Ing Process for the production of fine-pored insulating cement stones
DE509239C (en) * 1927-11-11 1930-10-06 Torkret Ges M B H Process for the production of fine-pored insulating cement stones
DE574793C (en) * 1928-05-06 1933-04-20 I G Farbenindustrie Akt Ges Process for the production of porous building materials from hydraulic binders

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1135815B (en) * 1958-07-22 1962-08-30 Rer Pol Techn Fritz Bohle Dipl Process for the production of insulating bodies
DE3204166A1 (en) * 1982-02-06 1983-08-18 Johann Wilhelm 5472 Plaidt Rollmann Concrete composition for a masonry unit

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