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
  • 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
  • C04B28/16—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 containing anhydrite, e.g. Keene's cement
  • C04B28/165—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 containing anhydrite, e.g. Keene's cement containing synthetic anhydrite
• • 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
  • C04B2111/00034—Physico-chemical characteristics of the mixtures
  • C04B2111/00146—Sprayable or pumpable mixtures
• • 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
  • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
  • C04B2111/00482—Coating or impregnation materials
• • 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
  • C04B2111/10—Compositions or ingredients thereof characterised by the absence or the very low content of a specific material
  • C04B2111/1075—Chromium-free or very low chromium-content materials
• • 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
  • C04B2111/23—Acid resistance, e.g. against acid air or rain
• • 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
• • 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
  • C04B2111/34—Non-shrinking or non-cracking materials

Definitions

• This invention relates to a casting mass as building material for use instead of a cement-based concrete. 5 Today, substantially cement is used as base for a
• the cement-based concrete has, however, several disadvantages:
• the shrinkage of concrete is approximately 0,3%. I.e. large problems may occur with cracks in the concrete _ ⁇ o - Cement-based concrete only withstands temperatures of maximum 600°C.
• Cement-based concrete is not resistant against oxides and acids.
• Cement-based concrete emits harmful gases from 150 °C .
• is - Cement causes chrome-allergic eczema.
• Cement-based concrete contributes to lime permeability when dyed. 20 - Cement-based concrete cannot be laid on in thin layers of 1-3 cm without cracking. The surface must be blasted and epoxy treated.
• Cement lime may cause serious burning injuries.
• Cement-based concrete has limited qualities for pumping.
• the object of this invention is to provide a casting mass that is cast as regular concrete, but without the above so mentioned disadvantages.
• a casting mass comprising sand, rock and any additives and materials, and which is characterized in that it contains anhydrite as the only binding and curing agent, which when added
• the binding and curing agent is synthetic anhydrite.
• the casting mass according to the invention provides new qualities for the concrete technology, qualities hitherto not known:
• the casting mass according to the invention is a complete substitute for cement-based concrete, it has been given the designation anhydrite-based concrete.
• Anhydrite is today produced in two different ways, as natural anhydrite and synthetic anhydrite. Natural anhydrite is found in certain types of rock such as calcium sulphate CaS0 4 . This gypsum-like rock contains water and has varying content of humus.
• Flammable no, powderized at 1450°C
• the recipe for 1 m 3 regular anhydrite-based concret will be: 480 kg anhydrite, 1240 kg sand 0-2 mm, 400 kg rock 2 8 mm, and 170 1 water. This compound is particularly suitable fo 5 thin rendering of 1-5 cm. In such a case cement-based concret will crack.
• Anhydrite-based concrete gives a better adherence t all types of surfaces. It may be laid on tiles, carpets, ol concrete, etc., from a thickness of 1 cm. This is not possibl o with cement-based concrete. From a thickness of 3 cm the concret is self-supporting, i.e. it may be laid as floating floor on fo instance polystyrene and plastics.
• Anhydrite-based concrete is particularly suitable fo use in the following areas: 5 - as thin rendering, 1-5 cm (cement-based concret cracks), as smoothing casting on concrete elements (floors), as outdoor concrete.
• Anhydrite as base gives a fa denser concrete. Tests have proved that syntheti anhydrite gives approximately the same qualities in dry climate as in humid climate, up to 94% relative humidi' y, as quick-drying concrete, for fast curing without shrinkage, as industrial concrete, concrete for extreme demands on compressive strength, heat, acid, etc., as light concrete with addition of lava pellets or leca pellets, - as concrete for use on top of heating cables and pipes.
• gabbrolite rock has excellent qualities as concrete aggregate.
• the diagram which is from a test is showing the impor ⁇ tance of water to the strength of an anhydrite-based concrete with baukulan and with aggregate as given in the table below. Curing time was 29 days.
• the test proves that a number of new and remarkabl results may be obtained by changing the parameters.
• Baukulan concrete composed of baukulan base with san and rock aggregate
• Baukulan industrial concrete composed of baukulan bas with aggregate of gabbrolite. Both versions are laid on as regular concrete and ma have a thickness from 0,8 cm to unlimited.
• Anhydrite-based concrete has the following genera characteristics:
• cement-based and anhydrite-based concrete Regard production, transport of the concrete to the building site, pumping of concrete, casting 5 methods, summer casting, winter casting and surface treatment.

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)
• Curing Cements, Concrete, And Artificial Stone (AREA)
• Floor Finish (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=19894829

Family Applications (1)

Country Status (3)

Citations (2)

• 1992
  • 1992-02-03 NO NO920431A patent/NO176959C/no unknown
• 1993
  • 1993-02-01 WO PCT/NO1993/000018 patent/WO1993015030A1/en active Application Filing
  • 1993-02-01 AU AU35764/93A patent/AU3576493A/en not_active Abandoned

Patent Citations (3)

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