EP2616406A1 - Chape blanche à réflexion de lumière élevée, à résistance aux taches et à nettoyage facile - Google Patents

Chape blanche à réflexion de lumière élevée, à résistance aux taches et à nettoyage facile

Info

Publication number
EP2616406A1
EP2616406A1 EP11824665.1A EP11824665A EP2616406A1 EP 2616406 A1 EP2616406 A1 EP 2616406A1 EP 11824665 A EP11824665 A EP 11824665A EP 2616406 A1 EP2616406 A1 EP 2616406A1
Authority
EP
European Patent Office
Prior art keywords
weight
binder system
use according
water
binder
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Withdrawn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
EP11824665.1A
Other languages
German (de)
English (en)
Other versions
EP2616406A4 (fr
Inventor
Florian Ellenrieder
Andreas Riedel
Uwe Gehrig
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.)
Construction Research and Technology GmbH
Original Assignee
Construction Research and Technology GmbH
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 Construction Research and Technology GmbH filed Critical Construction Research and Technology GmbH
Priority to EP11824665.1A priority Critical patent/EP2616406A4/fr
Publication of EP2616406A1 publication Critical patent/EP2616406A1/fr
Publication of EP2616406A4 publication Critical patent/EP2616406A4/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Withdrawn legal-status Critical Current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
    • 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
    • C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26—Silicates of the alkali metals
    • 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
    • C04B28/006—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 mineral polymers, e.g. geopolymers of the Davidovits type
    • 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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/06—Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers ; Inhibiting the action of active ingredients
    • C04B40/0641—Mechanical separation of ingredients, e.g. accelerator in breakable microcapsules
    • C04B40/065—Two or more component mortars
    • 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
    • C04B2111/00215—Mortar or concrete mixtures defined by their oxide composition
    • 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
    • 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
    • C04B2111/203—Oil-proof or grease-repellant 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
    • C04B2111/60—Flooring 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
    • C04B2111/80—Optical properties, e.g. transparency or reflexibility
    • 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
    • C04B2111/80—Optical properties, e.g. transparency or reflexibility
    • C04B2111/802—White cement
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • 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 present invention relates to the use of a binder system comprising compounds containing aluminium oxide, silicon oxide and titanium oxide for producing a screed, in particular a white screed having high light reflection, spot resistance and easy cleanability.
  • Portland cement is a known inorganic binder. It was mentioned for the first time in the British patent BP 5022 and has been continually developed further since then. Modern Portland cement contains about 70% by weight of CaO + MgO, about 20% by weight of S1O2 and about 10% by weight of AI2O3 + Fe2C"3. Due to its high CaO content, it cures hydraulically. White cement is a particularly low-iron and therefore white type of Portland cement. Furthermore, aluminate or high-alumina cements are known. Cured cement has a pronounced roughness, tends to become soiled and is difficult to clean. The cement surface is, depending on the composition, sometimes also relatively lipophilic and releases organic or oily contamination only after intensive cleaning.
  • Certain slags from metallurgical processes can be used as latent hydraulic binders as additions to Portland cements. Activation by means of strong alkalis such as alkali metal hydroxides, alkali metal carbonates or water glasses is also possible. They can be employed as mortars or concretes by mixing with solids (e.g. silica sand having an appropriate particle size) and additives.
  • solids e.g. silica sand having an appropriate particle size
  • blast furnace slag is a typical latent hydraulic binder.
  • the cured products generally have the properties of hydraulically cured systems. Inorganic binder systems based on reaction compounds based on S1O2 in combination with AI2O3, which cure in aqueous alkaline medium, are likewise generally known.
  • Such cured binder systems are also referred to as "geopolymers" and are described, for example, in EP 1236702 A1 , EP 1081 1 14 A1 , WO 85/03699, WO 08/012438, US 4,349,386 and US 4,472,199.
  • geopolymers can be cheaper and more resistant and have a more favourable CO2 emissions balance.
  • reactive oxide mixture it is possible to use metakaolin, slags, fly ashes, activated clay or mixtures thereof.
  • the alkaline medium for activating the binder usually comprises aqueous solutions of alkali metal carbonates, alkali metal fluorides, alkali metal hydroxides and/or water glass.
  • a geopolymer surface is less rough and less porous than a cement surface and therefore displays a lesser tendency to become soiled.
  • a surface is, depending on the composition, sometimes relatively lipophilic and releases organic or oily contamination only after intensive cleaning.
  • EP 1236702 A1 describes a building material mixture containing water glass for producing chemicals-resistant mortars based on a latent hydraulic binder, water glass and a metal salt from the group consisting of "metal hydroxide, metal oxide, carbon- containing metal salt, sulphur-containing metal salt, nitrogen-containing metal salt, phosphorus-containing metal salt, halogen-containing metal salt" as control agent.
  • a latent hydraulic constituent it is also possible to use slag sand.
  • metal salt alkali metal salts, in particular lithium salts, are mentioned and used.
  • EP 1081 1 14 A1 describes a building material mixture for producing chemicals-resistant mortars, where the building material mixture comprises water glass powder and at least one water glass hardener. Furthermore, over 10% by weight of at least one latent hydraulic binder is contained and the building material mixture comprises at least one inorganic filler.
  • these can also be upgraded by means of hydrophobic or hydrophilic coatings.
  • a process for applying a coating to the surface of a product made of concrete or mortar in order to improve the adhesion properties is disclosed in DE 3018826.
  • An increase in the hydrophilicity is achieved by means of mixtures of polyvinyl alcohol and boric acid in aqueous solution, which gel due to the alkalinity of the substrate.
  • hydrophilic coatings and coating methods may be found in CN 101440168, EP 2080740 and US 4,052,347.
  • Organic additives are used in all these coatings.
  • titanium dioxide e.g. rutile or anatase
  • Titanium dioxide acts photocatalytically, i.e. it decomposes organic soiling by oxidation, on irradiation with UV (and if appropriately doped even on irradiation with visible light).
  • WO 08/079756 A1 describes a coating composition and a coated article, where the coating composition comprises photocatalytic particles (e.g. T1O2) and an alkali metal silicate binder and also boric acid, borates or mixtures thereof.
  • EP 2080740 A1 describes a hydrophilic coating comprising titanium dioxide and an ether/oleate- based organic compound.
  • a white screed having high light reflection, spot resistance and easy cleanability should be made available.
  • the screed should at the same time preferably have a white colour with high light reflection, photocatalytic properties, low soiling and easy cleanability without recourse to surface upgrading having to be made.
  • the invention provides for the use of a binder system comprising compounds containing aluminium oxide, silicon oxide and titanium oxide for producing a screed, in particular a white screed having high light reflection, spot resistance and easy cleanability, characterized in that the sum of the oxides calculated as AI2O3, S1O2 and T1O2 in the binder system is > 41 % by weight, based on the water-free binder system.
  • compounds containing aluminium oxide, silicon oxide and titanium oxide are compounds and mixtures of compounds which comprise aluminium, silicon, titanium and oxygen.
  • AI2O3, S1O2 and T1O2 without aluminium, silicon and titanium actually having to be present as oxides.
  • silicates, aluminates, titanates, aluminosilicates, mixed oxides (e.g. AI2S12O7), cements, S1O2, AI2O3 and T1O2 together with sources of any other elements should also be considered to be comprised.
  • Titanium oxides are particularly preferably used in the form of titanium dioxide (rutile or anatase).
  • the "binder system” comprises, according to the invention, compounds containing aluminium oxide, silicon oxide and titanium oxide. Preferred constituents of the binder system are discussed below.
  • the oxide contents according to the invention are calculated in percent by weight (% by weight) on the basis of the "water-free binder system", i.e. according to the invention, water is not considered to be and calculated as a constituent of the binder system.
  • the binder system comes into contact with water, settling and curing of the binder system occurs.
  • the water is either kept in reserve separately from the binder and added when required (one-component formulation) or is stored together with an alkaline activator and added if required (two-component formulation). This gives (if appropriate together with the inert fillers and/or further additives discussed below) the screed according to the invention.
  • the easy cleanability of the screed is promoted by good wettability with water, i.e. high hydrophilicity.
  • This can be defined by means of the contact angle of an oil drop placed on the surface of the screed. If the screed is porous, the oil drop would be at least partly absorbed by the surface, so that a dynamic contact angle determination is necessary.
  • This can be carried out by means of an underwater measurement method.
  • the term "hyd rophilic" means a contact angle of > 90°. In the case of contact angles of > 135°, the effect can also be described as "superhydrophilicity".
  • the contact angle is considered to be 180°.
  • a relatively high content of said oxides in the binder system can be advantageous since this increases the hydrophilicity of the fully cured screed and thus the easy cleanability. It is also advantageous in terms of the photocatalytic effect if the titanium dioxide particles having a photocatalytic action are surrounded very well by water.
  • the sum of oxides calculated as AI2O3, S1O2 and T1O2 in the binder system is preferably
  • the content of oxides calculated as S1O2 in the binder system should preferably be > 15% by weight, particularly preferably > 25% by weight and in particular
  • the content of oxides calculated as CaO in the binder system is preferably ⁇ 35% by weight, more preferably ⁇ 30% by weight, particularly preferably from 8 to 28% by weight and in particular from 12 to 25% by weight, based on the water-free binder system. It has been found that the oxide composition of the binder system is primarily responsible for the easy cleanability according to the invention. This oxide composition is advantageously achieved by the binder system comprising hydraulic, latent hydraulic and/or pozzolanic binders and also alkali metal silicate and titanium dioxide. Here, at least part of the titanium dioxide can also be replaced by zirconium dioxide.
  • the hydraulic binder is, for example, selected from among Portland cements including white cements, aluminate cements and mixtures thereof, with the content of Portland cements and/or aluminate cements in the binder system preferably being ⁇ 30% by weight, particularly preferably ⁇ 20% by weight and in particular ⁇ 10% by weight, based on the water-free binder system. Screeds produced from pure Portland cements or aluminate cements (high-alumina cements) have a hydrophilicity which is too low. As indicated above, Portland cement contains about 70% by weight of CaO + MgO, about 20% by weight of S1O2 and about 10% by weight of AI2O3 + Fe203.
  • Aluminate cement or high-alumina cement contains from about 20 to 40% by weight of CaO, up to about 5% by weight of S1O2, from about 40 to 80% by weight of AI2O3 and up to about 20% by weight of Fe203. These types of cement are well known in the prior art.
  • the latent hydraulic binder is, for example, selected from among slags, in particular blast furnace slag, slag sand, slag sand flour, electrothermic phosphorus slag, stainless steel slag and mixtures thereof.
  • slags can be either industrial slags, i.e. waste products from industrial processes, or synthetically produced slags. The latter is advantageous since industrial slags are not always available in a constant amount and quality.
  • a latent hydraulic binder is preferably a binder in which the molar ratio of (CaO + MgO):Si02 is in the range from 0.8 to 2.5 and particularly preferably in the range from 1 .0 to 2.0.
  • Blast furnace slag is a waste product from the blast furnace process.
  • Slag sand is granulated blast furnace slag and slag sand flour is finally pulverized slag sand.
  • Slag sand flour varies in terms of its milling fineness and particle size distribution depending on the origin and work-up form, with the milling fineness having an influence on the reactivity.
  • the Blaine value is employed as characteristic parameter for the milling fineness and is typically in the range from 200 to 1000 m 2 kg -1 , preferably from 300 to 500 m 2 kg -1 . The more finely the slag sand flour is milled, the higher the reactivity.
  • Blast furnace slag generally contains from 30 to 45% by weight of CaO, from about 4 to 17% by weight of MgO, from about 30 to 45% by weight of S1O2 and from about 5 to 15% by weight of AI2O3, typically about 40% by weight of CaO, about 10% by weight of MgO, about 35% by weight of S1O2 and about 12% by weight of AI2O3.
  • Electrothermic phosphorus slag is a waste product of the electrothermic production of phosphorus.
  • blast furnace slag It is less reactive than blast furnace slag and contains from about 45 to 50% by weight of CaO, from about 0.5 to 3% by weight of MgO, from about 38 to 43% by weight of S1O2, from about 2 to 5% by weight of AI2O3 and from about 0.2 to 3% by weight of Fe203 and also fluoride and phosphate.
  • Stainless steel slag is a waste product from various steel production processes and has a highly variable composition (see Caijun Shi, Pavel V. Krivenko, Delia Roy, Alkali-Activated Cements and
  • the pozzolanic binder is, for example, selected from among amorphous silica, preferably precipitated silica, pyrogenic silica and microsilica, glass flour, fly ash, preferably brown coal fly ash and hard coal fly ash, metakaolin, natural pozzolanas such as tuff, trass and volcanic ash, natural and synthetic zeolites and mixtures thereof.
  • amorphous silica preferably precipitated silica, pyrogenic silica and microsilica
  • glass flour fly ash, preferably brown coal fly ash and hard coal fly ash, metakaolin, natural pozzolanas such as tuff, trass and volcanic ash, natural and synthetic zeolites and mixtures thereof.
  • Amorphous silica is more reactive, the smaller the particle diameters.
  • Amorphous silica is preferably an X-ray-amorphous silica, i.e. a silica which displays no crystallinity in the powder diffraction pattern.
  • glass flour should likewise be considered to be amorphous silica.
  • the amorphous silica advantageously has a content of at least 80% by weight, preferably at least 90% by weight of S1O2.
  • Precipitated silica is obtained industrially by precipitation processes starting out from water glass. Depending on the method of production, precipitated silica is also referred to as silica gel.
  • Pyrogenic silica is produced by reaction of chlorosilanes such as silicon tetrachloride in an H2/O2 flame. Pyrogenic silica is an amorphous S1O2 powder having a particle diameter of from 5 to 50 nm and a specific surface area of from 50 to 600 m 2 g- 1 .
  • Microsilica is a by-product of the production of silicon, ferrosilicon or zirconium and likewise consists largely of amorphous S1O2 powder.
  • the particles have diameters in the range from 0.1 ⁇ to 1 .0 ⁇ .
  • the specific surface area is in the range from 15 to 30 m 2 g- 1 .
  • fly ashes are formed, inter alia, in the combustion of coal in power stations.
  • Fly ash of class C contains, according to WO 08/012438, about 10% by weight of CaO, while fly ashes of class F contain less than 8% by weight, preferably less than 4% by weight and typically about 2% by weight of CaO.
  • the CaO content of fly ash of class C can in individual cases be up to 25% by weight.
  • Metakaolin is formed in the dehydrogenation of kaolin. While kaolin gives off physically bound water at from 100 to 200°C, dehydroxylation with breakdown of the lattice structure and formation of metakaolin (AI2S12O7) takes place at from 500 to 800°C. Pure metakaolin accordingly contains about 54% by weight of S1O2 and about 46% by weight of AI2O3.
  • the alkali metal silicate is advantageously selected from among compounds having the empirical formula m Si02 - n M2O, where M is Li, Na, K or NH4 or a mixture thereof, preferably Na or K.
  • the molar ratio of m:n is advantageously from 0.5 to 4.0, preferably from 0.7 to 3.8, particularly preferably from 0.9 to 3.7 and in particular from 1 .6 to 3.2.
  • the alkali metal silicate is preferably a water glass, advantageously a water glass powder and in particular a sodium or potassium water glass.
  • lithium or ammonium water glasses and mixtures of the water glasses mentioned can also be used.
  • the ratio of m:n (also referred to as modulus) indicated above should preferably not be exceeded since otherwise complete reaction of the components can no longer be expected. Lower moduli such as about 0.2 can also be employed. Water glasses having higher moduli should be brought to moduli in the range according to the invention by means of a suitable aqueous alkali metal hydroxide before use.
  • Potassium water glasses are commercially available predominantly as aqueous solutions since they are strongly hygroscopic, while sodium water glasses in the advantageous modulus range are also commercially available as solids.
  • the solids contents of the aqueous water glass solutions are generally from 20% by weight to 60% by weight, preferably from 30 to 50% by weight. Particular preference is given to potassium water glasses since they have less tendency to effloresce than sodium water glasses.
  • Water glasses can be produced industrially by melting silica sand with the
  • alkali metal carbonates can also be obtained without difficulty from mixtures of reactive silicas with the appropriate aqueous alkali metal hydroxides or alkali metal carbonates. It is therefore possible according to the invention to replace at least part of the alkali metal silicate by a mixture of a reactive silica and the corresponding alkali metal hydroxide or alkali metal carbonate.
  • the amount of water required for setting is generally from 15 to 60% by weight, preferably from about 25 to 50% by weight. These amounts are in addition to the total weight of the water-free binder system, which is calculated as 100% by weight.
  • the hydraulic, latent hydraulic and/or pozzolanic binder and also the alkali metal silicate and the titanium dioxide can be present together as one component in the binder system of the invention.
  • This one-component formulation is mixed with water when required.
  • the hydraulic, latent hydraulic and/or pozzolanic binder and also the titanium dioxide can also be present as a first component in the binder system of the invention.
  • the alkali metal silicate is present together with at least the amount of water required for setting as a second component which is used when required for mixing with the first component.
  • Inert fillers and/or further additives can be additionally present in the binder according to the invention. These optional components, can, as an alternative, also be added only during preparation of the screed.
  • Possible inert fillers are generally known sands and/or flours, for example those based on quartz, limestone, barite or clay, in particular silica sand.
  • Lightweight fillers such as perlites, kieselguhr (diatomaceous earth), expanded mica (vermiculite) and foam sand can also be used.
  • solid glass spheres, hollow glass spheres and/or crushed glass can also be used.
  • plasticizers e.g. polycarboxylate ethers
  • antifoams water retention agents
  • fluidizers e.g. polycarboxylate
  • the advantages achieved according to the invention are firstly the high chemical resistance of the screed, and secondly that the screed is hydrophilic, spot-resistant and photocatalytic. It is possible to produce screeds having an excellent mechanical strength.
  • the high reflectivity resulting from the white colour is particularly
  • Another advantage is that this high reflectivity is retained over the duration of use since a screed having these properties is barely soiled and is particularly easy to clean. Said effects are present in the overall screed composition and not only on the surface. This means that the effects are retained even after mechanical wear.
  • the present invention is illustrated by the following example.
  • a screed is produced from the following constituents:
  • Potassium water glass (modulus: 1.0; solids content: 40% by weight)
  • Titanium dioxide (anatase)
  • the solids are homogeneously mixed with one another and stirred with the aqueous potassium water glass solution.
  • the screed composition obtained in this way can be laid on concrete in a bonded or floating manner.
  • a white screed having a shrinkage after 28 days of ⁇ 1 mm/m, a compressive strength after 28 days of > 60 MPa and a tensile strength in bending after 28 days of > 4 MPa is obtained.
  • a conventional ink which can be removed by means of mains water is applied.
  • an oil-based spot former in accordance with DIN EN 1441 1 or used oil is applied. Both can likewise be completely removed by means of water.
  • photocatalytic action of the screed surface can be confirmed by means of silver nitrate solution.
  • a 1 % strength silver nitrate solution is applied to the surface of the screed and irradiated with a UV lamp. After a short time, the otherwise clear silver nitrate solution becomes black as a result of photocatalysis (silver ions are reduced to silver, while OH ions are oxidized).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

L'invention concerne l'utilisation d'un système de liant comprenant des composés contenant un oxyde d'aluminium, un oxyde de silicium et un oxyde de titane pour produire une chape, en particulier une chape blanche à réflexion de lumière élevée, à résistance aux taches et à nettoyage facile, caractérisée en ce que la somme des oxydes AI2O3, SiO2 et TiO2 calculés dans le système de liant est ≥ 41 % en poids sur la base du système de liant sans eau.
EP11824665.1A 2010-09-13 2011-08-12 Chape blanche à réflexion de lumière élevée, à résistance aux taches et à nettoyage facile Withdrawn EP2616406A4 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11824665.1A EP2616406A4 (fr) 2010-09-13 2011-08-12 Chape blanche à réflexion de lumière élevée, à résistance aux taches et à nettoyage facile

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10176378 2010-09-13
EP11824665.1A EP2616406A4 (fr) 2010-09-13 2011-08-12 Chape blanche à réflexion de lumière élevée, à résistance aux taches et à nettoyage facile
PCT/IB2011/053593 WO2012035456A1 (fr) 2010-09-13 2011-08-12 Chape blanche à réflexion de lumière élevée, à résistance aux taches et à nettoyage facile

Publications (2)

Publication Number Publication Date
EP2616406A1 true EP2616406A1 (fr) 2013-07-24
EP2616406A4 EP2616406A4 (fr) 2014-05-07

Family

ID=45831067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11824665.1A Withdrawn EP2616406A4 (fr) 2010-09-13 2011-08-12 Chape blanche à réflexion de lumière élevée, à résistance aux taches et à nettoyage facile

Country Status (2)

Country Link
EP (1) EP2616406A4 (fr)
WO (1) WO2012035456A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012010394U1 (de) * 2012-06-29 2012-12-05 Brillux Gmbh & Co. Kg Bodenspachtel
FR2995889B1 (fr) * 2012-09-24 2016-12-23 Saint-Gobain Weber Composition de verre accelerateur et activateur pour produits cimentaires
CN103979867B (zh) * 2014-04-16 2016-04-13 安徽颐鑫节能材料有限公司 一种磷矿渣/钢渣复合的轻质隔墙板及其制作方法
CN115466086A (zh) * 2022-09-06 2022-12-13 武汉大学 一种水泥基被动制冷复合材料及其制备方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0312323A2 (fr) * 1987-10-15 1989-04-19 Btg International Limited Compositions de ciment
DE3936915A1 (de) * 1989-11-06 1991-05-08 Fraunhofer Ges Forschung Zweikomponenten-kittmasse zum vermauern von schamottesteinen und keramischen materialien und ihre verwendung
WO2001051427A2 (fr) * 2000-01-10 2001-07-19 Hans Willi Babka Revetement autonivelant
EP1721876A1 (fr) * 2005-05-09 2006-11-15 Sika, S.A. Procédé pour la préparation d'un mortier auto-nivellante et liant utilisé là-dedans
US20070163470A1 (en) * 2004-02-13 2007-07-19 Sandrine Chanut Ultrahigh-performance, self-compacting concrete, preparation method thereof and use of same
US20080178769A1 (en) * 2007-01-30 2008-07-31 Construction Research & Technology Gmbh Kit and method for preparing a hardenable cementitious composition
WO2010006987A1 (fr) * 2008-07-16 2010-01-21 Hossein Maleki Mélange de matériau de construction silicaté

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1098028A (zh) * 1993-07-29 1995-02-01 天津石油化工公司研究所 β沸石分子筛催化剂及其制备方法
DE4413996C1 (de) * 1994-04-22 1995-07-20 Braas Gmbh Dachpfanne mit einer Silikatbeschichtung
CN1369239A (zh) * 2001-02-14 2002-09-18 张艳铭 一种理疗坎肩
CN1209434C (zh) * 2002-06-20 2005-07-06 中国科学院大连化学物理研究所 一种固体氧化物燃料电池的密封材料及制备
CN101139513A (zh) * 2007-10-19 2008-03-12 深圳市金科特种材料股份有限公司 有机硅耐高温导热粘合剂

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0312323A2 (fr) * 1987-10-15 1989-04-19 Btg International Limited Compositions de ciment
DE3936915A1 (de) * 1989-11-06 1991-05-08 Fraunhofer Ges Forschung Zweikomponenten-kittmasse zum vermauern von schamottesteinen und keramischen materialien und ihre verwendung
WO2001051427A2 (fr) * 2000-01-10 2001-07-19 Hans Willi Babka Revetement autonivelant
US20070163470A1 (en) * 2004-02-13 2007-07-19 Sandrine Chanut Ultrahigh-performance, self-compacting concrete, preparation method thereof and use of same
EP1721876A1 (fr) * 2005-05-09 2006-11-15 Sika, S.A. Procédé pour la préparation d'un mortier auto-nivellante et liant utilisé là-dedans
US20080178769A1 (en) * 2007-01-30 2008-07-31 Construction Research & Technology Gmbh Kit and method for preparing a hardenable cementitious composition
WO2010006987A1 (fr) * 2008-07-16 2010-01-21 Hossein Maleki Mélange de matériau de construction silicaté

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2012035456A1 *

Also Published As

Publication number Publication date
EP2616406A4 (fr) 2014-05-07
WO2012035456A1 (fr) 2012-03-22

Similar Documents

Publication Publication Date Title
EP2616610B1 (fr) Utilisation de composés contenant de l'oxyde d'aluminium et de l'oxyde de silicium pour la production d'un produit de construction hydrophile
CA2781462C (fr) Systeme de liant inorganique pour la production de produits chimiques pour le batiment chimiquement resistants
JP5460700B2 (ja) スラグサンドを含有する混合物、特に建築材料混合物
CA2974729C (fr) Materiaux resistant au feu appliques par pulverisation et resistant a la corrosion
CA2821512C (fr) Composite geopolymere pour beton a ultra hautes performances
CA2797342C (fr) Liant aluminosilicate a activation alcaline contenant des billes de verre
EP2616406A1 (fr) Chape blanche à réflexion de lumière élevée, à résistance aux taches et à nettoyage facile
MXPA05001211A (es) Microsilica mejorada, su aplicacion como material puzolanico y metodos para su obtencion.
JP2004315303A (ja) セメント組成物、コーティング材料、及びそれを用いた遮塩方法
JP4322648B2 (ja) 水硬性材料
WO2023072983A1 (fr) Compositions de liant et de mortier
CZ20022505A3 (en) Binding agent based on cement clinker and with controllable start of setting
JP4691368B2 (ja) セメント組成物

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20130415

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20140404

RIC1 Information provided on ipc code assigned before grant

Ipc: C04B 111/00 20060101ALN20140331BHEP

Ipc: C04B 111/20 20060101ALN20140331BHEP

Ipc: C04B 28/00 20060101ALI20140331BHEP

Ipc: C04B 12/04 20060101AFI20140331BHEP

Ipc: C04B 111/80 20060101ALN20140331BHEP

Ipc: C04B 111/62 20060101ALN20140331BHEP

Ipc: C04B 40/06 20060101ALI20140331BHEP

Ipc: C04B 111/27 20060101ALN20140331BHEP

Ipc: C04B 111/60 20060101ALN20140331BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20141105