EP1747178A1 - Materiau de construction - Google Patents

Materiau de construction

Info

Publication number
EP1747178A1
EP1747178A1 EP04786782A EP04786782A EP1747178A1 EP 1747178 A1 EP1747178 A1 EP 1747178A1 EP 04786782 A EP04786782 A EP 04786782A EP 04786782 A EP04786782 A EP 04786782A EP 1747178 A1 EP1747178 A1 EP 1747178A1
Authority
EP
European Patent Office
Prior art keywords
substance
building material
water
base substance
material according
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.)
Withdrawn
Application number
EP04786782A
Other languages
German (de)
English (en)
Inventor
Reinhard Frey
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.)
Brandenburgische Technische Universitaet Cottbus
Original Assignee
Brandenburgische Technische Universitaet Cottbus
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 Brandenburgische Technische Universitaet Cottbus filed Critical Brandenburgische Technische Universitaet Cottbus
Publication of EP1747178A1 publication Critical patent/EP1747178A1/fr
Withdrawn legal-status Critical Current

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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10—Coating or impregnating
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10—Coating or impregnating
    • C04B20/1018—Coating or impregnating with organic materials
    • C04B20/1029—Macromolecular compounds
    • C04B20/104—Natural resins, e.g. tall oil
    • 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
    • C04B28/14—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 calcium sulfate 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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/60—Agents for protection against chemical, physical or biological attack
    • C04B2103/65—Water proofers or repellants
    • 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

Definitions

  • the invention relates to a building material made from a powdery or granular base substance which sets in the presence of water by crystallization, recrystallization and / or chemical reaction and is particularly suitable for improving the strength and water resistance of objects which have been manufactured using the building material.
  • Powdered minerals are often used as building materials, which are mixed to a paste-like mass by mixing with water and harden after processing by crystallization, recrystallization and / or chemical reaction to form a solid body. Structures formed from this often have a high water absorption capacity, which is undesirable in certain circumstances.
  • molded articles, plates, etc. made of plaster are limited in their use and can generally only be used in closed, dry rooms.
  • DE 3626048 AI proposes for boards and moldings made of gypsum or gypsum hemihydrate to add liquid polyisocyanates to the water-solid mixture for the production of gypsum boards. If necessary, reinforcement materials in the form of cellulose particles can also be added to the shaped bodies. In another embodiment of the invention mentioned, it is proposed to apply the polyisocyanates to the surface of finished gypsum boards.
  • the structure created in this way from the three-dimensional network of the water-free binder and the crystal structures embedded therein has both high strength and good water resistance.
  • the disadvantage of this method is that after the shaping step, the water-free binder must first solidify before the mineral building material is cured by the addition of water and the final strength is achieved.
  • the object of the invention is therefore to propose a building material which is to be processed like a normal mineral building material, but in the fully cured state in particular brings about a comparatively increased moisture resistance of components.
  • such a building material is made from a powdery or granular base substance that sets in the presence of water by crystallization, recrystallization and / or chemical reaction proposed by designing it according to the features of the main claim.
  • the basic substance of such a building material consists in particular of the mineral materials described in claim 2 and the coating substances characterized in claims 3 and 4. Particularly advantageous embodiments of the composition of the building material are presented in claims 5 to 8.
  • a method for producing a building material according to the invention is presented in claims 9 and following.
  • a building material according to the invention consists of a powdery or granular base substance which sets in the presence of water by crystallization, recrystallization and / or chemical reaction and a coating substance.
  • Processed natural raw materials such as gypsum, anhydrite or lime or industrially produced building materials such as cement or reactive fly ash or synthetic mineral materials or mixtures of the aforementioned materials are preferably used as the basic substance.
  • the individual particles of this basic substance are partially or completely coated with an enveloping substance, which does not cause the basic substance to bind water when it is coated.
  • the coating substance used in organic solvents is soluble and / or meltable substances, such as natural or synthetic resins or resin mixtures or organic, inorganic, mineral or synthetic adhesives, adhesive systems or mixtures of the aforementioned substances.
  • water-soluble and / or water-insoluble and / or water-swellable substances are used as fillers.
  • the invention proposes that the particles of the water-soluble and / or water-insoluble and / or water-swellable fillers can also be completely or partially coated with a water-insoluble substance.
  • a building material according to the invention can be produced by mixing a powdery or granular base substance which sets in the presence of water by crystallization, recrystallization and / or chemical reaction with an enveloping substance liquefied by melting or dissolving in an anhydrous solvent.
  • the coating substance is solidified by removing the solvent or cooling. It is in the sense of the invention if the mixture is dried as a loose bed or shaped body and comminuted to the required fineness in a separate subsequent operation, as well as if the mixture is sprayed into an air stream, for example a spray drying system.
  • the invention is to be explained in more detail below in the form of exemplary embodiments.
  • a standard prism solid was produced from the building material according to the invention thus obtained by mixing and shaping the building material with water in a water to building material weight ratio of 0.4.
  • the water-gypsum mixture had to be mixed in a weight ratio of 0.6 for the comparison body.
  • the test specimen produced from the building material according to the invention had a compressive strength of 22.5 N / mm 2 and a bending tensile strength of 7.0 N / mm 2 .
  • the compressive strength of the comparison body made of normal gypsum was 14.5 N / mm 2
  • its flexural tensile strength was 3.5 N / mm 2 .
  • test specimen made from the building material was 6% after 1 hour, 10% after 3 hours and 12% after 24 hours.
  • a mixture made from the building material according to the invention with a water / building material ratio of 0.4 was easy to process and gave warp-free standard prism moldings.
  • a mixture of normal gypsum, made in the same mixture ratio, was very good difficult to process and resulted in a banana-shaped prism body with a longitudinal warpage of 18%.
  • Embodiment 2 To produce a building material according to the invention, 1,000 g of gypsum are again mixed with 320 g of a 60% balsamic resin / spirit solution. The resulting mixture is sprayed in a trickle tower and dried. The resulting powder is mixed with 100 g dry short straw fibers and 600 g water. Standard prism solids formed therefrom have a compressive strength of 9.0 N / mm 2

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)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Panels For Use In Building Construction (AREA)

Abstract

L'invention concerne un matériau de construction constitué par une substance de base pulvérulente ou granuleuse se liant par cristallisation, recristallisation ou réaction chimique en présence d'eau, ce matériau de construction étant particulièrement adapté pour améliorer la solidité ou la résistance à l'eau d'objets réalisés avec ledit matériau. L'invention vise à réaliser un matériau qui peut être usiné comme un matériau minéral normal et qui, étant solidifié, confère une plus grande résistance à l'humidité aux éléments de construction qu'il constitue. A cet effet, le matériau de construction de l'invention comprend une substance de base et une substance enveloppante. La substance de base est de préférence composée de matières premières naturelles préparées telles que le plâtre, l'anhydrite ou la chaux, ou de matériaux industriels comme le ciment ou la cendre volante, ou bien de matières minérales synthétiques ou bien encore de mélanges des matières susmentionnées. Les particules de cette substance de base sont enrobées d'une substance enveloppante qui ne réagit pas avec la substance de base ou dont le solvant ne réagit pas avec la substance de base. En fonction du type de substance enveloppante, la surface des particules de la substance de base est partiellement ou complètement scellée.
EP04786782A 2004-03-09 2004-09-16 Materiau de construction Withdrawn EP1747178A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410011774 DE102004011774B3 (de) 2004-03-09 2004-03-09 Verfahren zur Herstellung eines Bindemittels
PCT/DE2004/002063 WO2005087683A1 (fr) 2004-03-09 2004-09-16 Materiau de construction

Publications (1)

Publication Number Publication Date
EP1747178A1 true EP1747178A1 (fr) 2007-01-31

Family

ID=34958955

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04786782A Withdrawn EP1747178A1 (fr) 2004-03-09 2004-09-16 Materiau de construction

Country Status (3)

Country Link
EP (1) EP1747178A1 (fr)
DE (1) DE102004011774B3 (fr)
WO (1) WO2005087683A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2008004324A (es) * 2008-03-31 2009-09-30 Rodrigo Lobo Morales Una composición y procedimiento para la fabricación de mortero ligero estructural a base de cargas ligeras, anhidrita sintética tipo ii y aditivos, para su aplicación en sistemas constructivos de ferro cemento, haciéndolo: térmico, acústico y antisís

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE297759C (fr) *
US1076028A (en) * 1911-09-30 1913-10-21 New Jersey Testing Lab Water-resistant cement and process of making same.
US2198776A (en) * 1936-08-29 1940-04-30 United States Gypsum Co Water-resistant cementitious product
DE674643C (de) * 1936-10-28 1939-04-18 Karl Halbach Verfahren zur Herstellung wasserabweisender Bindemittel
US2594280A (en) * 1949-03-11 1952-04-29 Julian F Beaudet Cement bonded natural cellulose aggregate impregnated with cured synthetic resin and method of making the same
DE882371C (de) * 1950-09-13 1953-07-09 Anton Wiggenhauser Verfahren zur Herstellung von Bauplatten aus Schilfrohr und Gips
WO1981000422A1 (fr) * 1979-07-31 1981-02-19 K Holbek Procede de preparation de fibres
DE3601736A1 (de) * 1986-01-22 1987-07-23 Fulgurit Baustoffe Gmbh Verfahren zur herstellung von bauplatten
DE3704783A1 (de) * 1987-02-16 1988-08-25 Hoerling Ludwig Chem Verfahren zur herstellung von expandierenden moertelgemischen
JPH01121397A (ja) * 1987-11-05 1989-05-15 Nikka Kk 乾式グラウチング剤及びその製造方法
DE3803786A1 (de) * 1988-02-09 1989-08-17 Karl Reinhard Zeiss Mineralisches bindemittel und verfahren zu seiner herstellung und verarbeitung
US6162839A (en) * 1995-12-20 2000-12-19 Henkel Kommanditgesellschaft Auf Aktien Composition for producing light plaster, production of the foaming agent used therefor and its use
DE19628749B4 (de) * 1996-07-17 2007-06-14 Romonta Gmbh Hydrophobierungsmittel und Verwendung des Selben zur Hydrophobierung eines mineralischen Materials

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005087683A1 *

Also Published As

Publication number Publication date
DE102004011774B3 (de) 2006-01-05
WO2005087683A1 (fr) 2005-09-22

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