DE202004004523U1 - Refractory concrete, contains organic cellulose fibers and inorganic additives which form micro pores - Google Patents

Refractory concrete, contains organic cellulose fibers and inorganic additives which form micro pores Download PDF

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Publication number
DE202004004523U1
DE202004004523U1 DE202004004523U DE202004004523U DE202004004523U1 DE 202004004523 U1 DE202004004523 U1 DE 202004004523U1 DE 202004004523 U DE202004004523 U DE 202004004523U DE 202004004523 U DE202004004523 U DE 202004004523U DE 202004004523 U1 DE202004004523 U1 DE 202004004523U1
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liters
cellulose fibers
size
tufa
contains organic
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    • 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
    • C04B28/06—Aluminous cements
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • 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

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

Abstract

A refractory concrete contains organic cellulose fibers and inorganic additives which form micro pores. The cellulose fibers are up to 0.5 mm in length and burn when heated. The inorganic additive consists of perlite granules of up to 1 mm in size.

Description

Es handelt sich um eine Rezeptur zur Herstellung eines feuerfesten Betons der mit Wasser angemischt und in Schalungen eingebracht wird.It is a recipe for the production of refractory concrete mixed with water and placed in formwork.

Zu 2To 2

Es gibt feuerfeste Stampfmassen, die als Bindemittel Tonerde- Schmelzzement beinhalten und aus Zuschlagstoffen wie z.b. Schamotte, Blähglimmer, Basalt oder Silizium-Verbindungen bestehen. Ihre Temperatur-Wechselbeständigkeit ist nicht immer gegeben.There are refractory ramming compounds which contain alumina cement as a binder and from aggregates such as. Chamotte, expanded mica, Basalt or silicon compounds exist. Your resistance to temperature changes is not always given.

Zu 3To 3

Bisher wurden für holzdirektbeheizte Backöfen, vorwiegend vulkanische Tuffsteine aus der Osteifel eingesetzt, die im Tagebau in Steinbrüchen gewonnen und entsprechend bearbeitet und zugerichtet wurden.So far, mainly for wood-fired ovens volcanic tufa from the Eastern Eifel used in opencast mining won in quarries and processed and prepared accordingly.

Diese Natursteine waren nicht nur hitzefest bis ca.800°C, sondern auch feuerfest.These natural stones weren't just heat-resistant up to approx. 800 ° C, but also fireproof.

Da aus Gründen des Natur-und Umweltschutzes in absehbarer Zeit, die Stillegung dieser Steinbrüche droht und somit ein Zugriff auf dieses Material auszuschließen ist, lag der Gedanke nahe, diese Steine künstlich herzustellen!Because for reasons of nature and environmental protection in the foreseeable future, the quarrying of these quarries threatens and thus access to this material can be excluded, the idea was obvious to make these stones artificially!

Zu 4 bis 6To 4 to 6

Die Erfindung, woraus sich die beantragten Schutzansprüche ableiten besteht darin, dass die auf großen Deponien und Halden befindlichen Tuff-Abfälle die aus Jahrhunderte alten Steinbearbeitung entstanden sind, als Hauptbestandteil der künstlich herzustellenden Steine vorgesehen sind.The invention, from which the protection claims are derived is that the big ones Landfills and stockpiles of tuff waste from centuries-old Stone processing have emerged as the main component of artificially produced Stones are provided.

Diese Tuffsteinabfälle werden in einem Brechvorgang zerkleinert und fraktioniert. Das daraus entstandene Material heißt fortan „Trass" und ist in der Zusammensetzung und chemisch identisch mit der ebenfalls in der Osteifel vorkommenden natürlichen Trassablagerung.This will be tufa crushed and fractionated in one crushing process. The resulting Material means henceforth "Trass" and is in the composition and chemically identical to that also found in the Eastern Eifel natural Trassablagerung.

Die zum Einsatz kommende Korngröße liegt zwischen 0 und 15 mm. Gemischt mit anderen Zuschlagstoffen wie z.b. Schaum-Lava, 1–8 mm und Perlite 0–1mm, sowie den ungiftigen Additiven Cellulose-Fasern und Methyl-Cellulose sowie Tonerde-Schmelzzement als Bindemittel, ergibt sich unter Zugabe von Wasser, eine feuerfeste Masse.The grain size used is between 0 and 15 mm. Mixed with other additives such as Foam lava, 1-8 mm and perlite 0-1mm, as well as the non-toxic additives cellulose fibers and methyl cellulose as well as alumina cement as a binder, the addition of water results in a refractory Dimensions.

Nach einer Aushärtezeit von ca. 48 Stunden entsteht ein hitze-und feuerfester Stein, der nicht nur alle guten Eigenschaften des vulkanischen Tuffsteines erreicht, sondern hinsichtlich Feuerfestigkeit, Hitzefestigkeit, Temperaturwechselbeständigkeit, Druck- und Biegezugfestigkeit, – weit übertrifft.After a curing time of approx. 48 hours a heat and refractory stone that not only has all good properties of the volcanic tuff, but in terms of fire resistance, Heat resistance, thermal shock resistance, pressure and bending tensile strength - far exceeds.

Dadurch das die Masse wie Beton verarbeitet werden kann, können im Gegensatz zum Tuffstein, Armierungseisen oder Metall-Fasern als Bewehrung eingebracht werden, wodurch eine wesentliche Erhöhung der Stabilität erreicht wird.Because the mass is processed like concrete can be in contrast to tufa, reinforcing iron or metal fibers as Reinforcement can be introduced, which significantly increases the stability is achieved.

Claims (7)

Dadurch gekennzeichnet, das durch den Zusatz von organischen Cellulose-Fasern in der Größe =< 0,5mm, (die beim erstmaligem Heizen verbrennen) und des anorganischen Zuschlagstoffes Perlite in der Korngröße =< 1mm, Mikro-Poren entstehen, die die Temperatur-Wechselbeständigkeit des Materials gewährleisten! Characterized in that by the addition of organic cellulose fibers in the size = <0.5 mm, (burn during initial heating) and the inorganic aggregate perlite in the grain size = <1 mm, micro-pores are formed, the temperature-shock resistance guarantee of the material! Dadurch gekennzeichnet das durch den Zusatz der Methyl-Cellulose, auf eine Nachbehandlung durch Feuchthalten und Unterwasserlagerung des angemachten Betons, so wie er vom Bindemittelhersteller empfohlen wird, verzichtet werden kann, weil dieser Zusatzstoff das Wasserrückhaltevermögen des Betons erheblich steigert.Characterized by the addition of methyl cellulose, for post-treatment by keeping moist and underwater storage of the prepared concrete, as recommended by the binder manufacturer is dispensed with, because this additive reduces the water retention capacity of the Concrete increases significantly. Dadurch gekennzeichnet das der Einsatz von Tonerde-Schmelzzement als Bindemittel und Schaum-Lava als Zuschlagstoff, eine Feuerfestigkeit von ca.1250°C, erreicht wird, die bisher bei Tuffsteinen nicht möglich war.Characterized by the use of alumina cement as a binder and foam lava as an additive, a fire resistance of ca.1250 ° C, is achieved, which was previously not possible with tufa stones. Dadurch gekennzeichnet, durch die Möglichkeit der Einbringung von metallischen Armierungsgittern und Fasern eine bisher nie erreichte Bruchfestigkeit und Transportsicherheit gewährleistet wird.Characterized by the possibility the introduction of metallic reinforcement grids and fibers Breaking strength and transport safety never achieved before becomes. Dadurch gekennzeichnet das sich im Gegensatz zum Tuffstein, Steine mit einer Dicke von 25mm bis 300mm, einer Länge von bis zu 2 Meter und einer m2 Größe von 1 m2 fugenlos herstellen lassen.Characterized that in contrast to tufa, stones with a thickness of 25mm to 300mm, a length of up to 2 meters and a m 2 size of 1 m 2 can be produced seamlessly. Dadurch gekennzeichnet, das sich verschiedene Formkörper im Stampf- oder Gießverfahren, mit oder ohne Armierung herstellen lassen.Characterized in that different moldings in Ramming or casting processes, with or without reinforcement. Dadurch gekennzeichnet, das sich folgende Rezeptur ergibt und bei vorschriftsmäßiger Anwendung die nachstehenden Werte erzielt werden: 25 kg Tonerde Schmelzzement, Norm FN P 15–315 50 Liter Trass, 0–15 mm 25 Liter Schaumlava, 1–4 mm 3 Liter Cellulose Faser 0–0,5 mm 10 Liter Perlite 0–1 mm 0,010 Liter Methyl-Cellulose 10 Liter Wasser Obige Mischung ergibt ca. 62,5 Liter Nassmörtel Druckfestigkeit: => 3,50 N/mm2 Biegezugfestigkeit => 1,75 N/mm2 Trockenrohdichte: => 1,60 Kg/liter Temperaturbeständigkeit ca. 1250 °CCharacterized in that the following recipe is obtained and the following values are achieved when used as directed: 25 kg of alumina cement, standard FN P 15–315 50 liters of trass, 0–15 mm 25 liters of foam lava, 1–4 mm 3 liters of cellulose fiber 0 –0.5 mm 10 liters Perlite 0–1 mm 0.010 liters methyl cellulose 10 liters water The above mixture gives approx. 62.5 liters wet mortar. Compressive strength: => 3.50 N / mm 2 bending tensile strength => 1.75 N / mm 2 Dry bulk density: => 1.60 kg / liter temperature resistance approx. 1250 ° C
DE202004004523U 2004-03-23 2004-03-23 Refractory concrete, contains organic cellulose fibers and inorganic additives which form micro pores Expired - Lifetime DE202004004523U1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2512366A (en) * 2013-03-28 2014-10-01 Hydro Int Plc A roof covering and a method for manufacturing a roof covering
EP3511306A1 (en) * 2018-01-16 2019-07-17 Universität Kassel Thermally stable and cyclically stressable high-strength or ultra-high strength concrete component

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2512366A (en) * 2013-03-28 2014-10-01 Hydro Int Plc A roof covering and a method for manufacturing a roof covering
EP3511306A1 (en) * 2018-01-16 2019-07-17 Universität Kassel Thermally stable and cyclically stressable high-strength or ultra-high strength concrete component

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