DE814862C - Manufacture of concrete bodies - Google Patents

Manufacture of concrete bodies

Info

Publication number
DE814862C
DE814862C DER1940A DER0001940A DE814862C DE 814862 C DE814862 C DE 814862C DE R1940 A DER1940 A DE R1940A DE R0001940 A DER0001940 A DE R0001940A DE 814862 C DE814862 C DE 814862C
Authority
DE
Germany
Prior art keywords
concrete
manufacture
concrete bodies
bodies
coefficient
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
DER1940A
Other languages
German (de)
Inventor
Josef Dr-Ing Dr Raab
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 DER1940A priority Critical patent/DE814862C/en
Application granted granted Critical
Publication of DE814862C publication Critical patent/DE814862C/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
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • 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
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/46Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
    • C04B41/47Oils, fats or waxes natural resins
    • 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
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/60After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
    • C04B41/61Coating or impregnation
    • C04B41/62Coating or impregnation with organic materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Description

Herstellung von Betonkörpern Es ist bekannt, Verbundkörper aus Eisen und Beton, sog. Eisenbeton, herzustellen. Die Möglichkeit zur Herstellung solcher Körper ist dadurch gegeben, daß die Temperaturausdehnungskoeffizienten von Eisen und Beton nur einen geringen Unterschied aufweisen, so daß der Querschnitt des Betonkörpers von Wärmespannungen nahezu frei bleibt. Die Verwendung anderer Metalle, z. B. Aluminium, in Verbindung mit Leichtbeton scheitert an dem hohen Ausdehnungskoeffizienten des Aluminiums.Manufacture of concrete bodies It is known composite bodies made of iron and concrete, so-called reinforced concrete. The possibility of producing such Body is given by the coefficient of thermal expansion of iron and concrete have little difference, so that the cross section of the concrete body remains almost free of thermal stress. The use of other metals, e.g. B. aluminum, in connection with lightweight concrete fails because of the high expansion coefficient of the Aluminum.

Die Wärmeausdehnungskoeffizienten sind fol- gende: Beton und Leichtbeton .. . . . . .. . .. . . . 9 X Eisen und Stahl . . . . . . . . . . . . . . . . . . . . io X io-4 Aluminium ........................ 23 X i0-4 Die vorliegende Erfindung betrifft ein Verfahren, durch dessen Anwendung der Temperaturkoeffizient von Leichtbetonmassen in Grenzen von etwa 9 bis 25 X 10-s geändert werden kann, so daß ein Verbundstoff aus Leichtbeton und Aluminium hergestellt werden kann, wobei gleichzeitig die Druckfestigkeit des Betons bedeutend erhöht wird. Die Druckfestigkeitserhöhung kann bis zu einer Bruchspannung von 6oo kg/qcm getrieben werden.The coefficients of thermal expansion are as follows area: Concrete and lightweight concrete ... . . . ... ... . . 9 X Iron and Steel . . . . . . . . . . . . . . . . . . . . io X io-4 Aluminum ........................ 23 X i0-4 The present invention relates to a method by the use of which the temperature coefficient of lightweight concrete masses can be changed within the limits of about 9 to 25 X 10-s, so that a composite material of lightweight concrete and aluminum can be produced, while at the same time the compressive strength of the concrete is significantly increased . The increase in compressive strength can be driven up to a breaking stress of 600 kg / cm².

Da der Elastizitätsmodul derartiger Körper bei etwa 50 ooo kg/qcm liegt und der von Aluminium mit etwa 700ooo kg/qcm in die Rechnung eingeht, ergibt sich als Zahl n, d. i. das Verhältnis des Elastizitätsmoduls der Betonmasse zu dem der Metalleinlage, 700000/50000 = 14, so daß die für n = 15 aufgestellten Bemessungsformeln für Stahlbeton ohne nennenswerten Fehler auf den obenerwähnten Verbundbaustoff angewendet werden können. Das Verfahren ist folgendes: Zunächst -wird aus Beton odaFr aus Leichtstoffkörnern, -z. B. Bims, Hochöfenschaumschlacke, Kunstbims, Kieselgur o. dgl., unter Beifügung eines Bindemittels, wie Zement o. dgl.t oder. aus Gasbeton in der üblichen Weise ein Bautel -mit den Metalleinlagen geformt.Since the modulus of elasticity of such bodies is around 50,000 kg / square cm and that of aluminum is included in the calculation with about 700,000 kg / sqcm itself as number n, d. i. the ratio of the modulus of elasticity of the concrete mass to that of the metal insert, 700000/50000 = 14, so that the calculation formulas established for n = 15 for reinforced concrete applied to the above-mentioned composite building material without any significant defects can be. The procedure is as follows: First - is made of concrete odaFr from light material grains, -z. B. pumice, blast furnace foam slag, artificial pumice, kieselguhr or the like, with the addition of a binder such as cement or the like or. made of aerated concrete In the usual way a component is formed with the metal inserts.

Dieser wird dann nach dem Abbinden und einer evtl. anschließenden Luftlagerung in einem Heizofen erhitzt und wieder abgekühlt. Darauf wird der Körper in einem Imprägnierkessel mit einem Tränkmittel, wie Bitumen, Teerpech, Kunstharz o. dgl., getränkt.This is then after setting and a possibly subsequent Air storage heated in a heating furnace and cooled again. Then the body becomes in an impregnation kettle with an impregnating agent such as bitumen, tar pitch, synthetic resin or the like, soaked.

Durch diese Behandlung wird der Temperaturausdehnungskoeffizient des Körpers weitgehend verändert.This treatment increases the coefficient of thermal expansion of the Body largely changed.

Die Größe des zu erreichenden Ausdehnungskoeffizienten hängt von verschie4enen Faktoren ab. Abgesehen von der verwendeten Anlage zur Beheizung und Imprägnierung wirken geringe Zementbeigabe, hohe Erhitzungstemperatur, lange Erhitzungsdauer, rasche Abkühlung, hoher Ausdehnungskoeffizient des verwendeten Tränkmittels oder große Luftverdünnung beim Imprägnieren stärker erhöhend, dagegen große Zementbeigabe, geringere Erhitzungstemperatur; kurze Erhitzurigsdauer, langsame Abkühlung, niedriger Wärmeausdehnungskoeffizient des verwendeten Tränkmittels oder niedrigere Luftverdünnung beim Imprägnieren weniger stark erhöhend auf den Wärmeausdehnungskoeffizienten des Endproduktes.The size of the expansion coefficient to be achieved depends on various Factors. Apart from the system used for heating and impregnation have a low addition of cement, high heating temperature, long heating time, rapid cooling, high expansion coefficient of the impregnating agent used or large air dilution during impregnation increases the increase, on the other hand large addition of cement, lower heating temperature; short heating time, slow cooling, lower Thermal expansion coefficient of the impregnating agent used or lower air dilution when impregnated, it increases the coefficient of thermal expansion to a lesser extent End product.

Genauere Angaben über Temperaturen und sonstige Einzelheiten erübrigen sich, da diese sich mit der verwendeten Apparatur stark ändern. Jeder Fachmann ist jedoch in der Lage, nach einigen Versuchen die richtigen Faktoren für den gewünschten Zweck auf Grund der vorstehenden Beschreibung zu ermitteln.More precise information about temperatures and other details are not required because these change greatly with the equipment used. Everyone is a professional however, after a few tries, will be able to find the right factors for the desired one Purpose to determine based on the description above.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Beton-, ins besondere Leichtbetonkörpern aus Zement und Füllstoffen, wie Sand, Kies, Bims, Hochofenschaumschlacke, oder aus Gasbeton, dadurch gekennzeichnet, daß der Betonkörper nach dem Abbinden einer Wärmebehandlung und anschließend einer Tränkung mit Bitumen, Teerpoch, Kunstharz o. dgl. Stoffen unterzogen wird. PATENT CLAIM: Process for the production of concrete, especially lightweight concrete bodies from cement and fillers, such as sand, gravel, pumice, blast furnace slag, or from aerated concrete, characterized in that the concrete body, after setting, undergoes a heat treatment and then impregnation with bitumen, tar pound, Synthetic resin or the like. Substances is subjected.
DER1940A 1950-06-03 1950-06-03 Manufacture of concrete bodies Expired DE814862C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER1940A DE814862C (en) 1950-06-03 1950-06-03 Manufacture of concrete bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER1940A DE814862C (en) 1950-06-03 1950-06-03 Manufacture of concrete bodies

Publications (1)

Publication Number Publication Date
DE814862C true DE814862C (en) 1951-09-27

Family

ID=7395755

Family Applications (1)

Application Number Title Priority Date Filing Date
DER1940A Expired DE814862C (en) 1950-06-03 1950-06-03 Manufacture of concrete bodies

Country Status (1)

Country Link
DE (1) DE814862C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1121530B (en) * 1954-06-11 1962-01-04 Mij Tot Het Uitvoeren Van Asfa Manufacture of concrete

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1121530B (en) * 1954-06-11 1962-01-04 Mij Tot Het Uitvoeren Van Asfa Manufacture of concrete

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