EP2429968A2 - Réduction de retrait pour des liants aluminosilicate activés par des alcalis - Google Patents

Réduction de retrait pour des liants aluminosilicate activés par des alcalis

Info

Publication number
EP2429968A2
EP2429968A2 EP10718140A EP10718140A EP2429968A2 EP 2429968 A2 EP2429968 A2 EP 2429968A2 EP 10718140 A EP10718140 A EP 10718140A EP 10718140 A EP10718140 A EP 10718140A EP 2429968 A2 EP2429968 A2 EP 2429968A2
Authority
EP
European Patent Office
Prior art keywords
alkali
binder
binder according
organic compound
concrete
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Withdrawn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
EP10718140A
Other languages
German (de)
English (en)
Inventor
Michael Melchart
Maria Katharina Klinger
Sabine Elisabeth Kirschbauer
Michael Kutschera
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 EP10718140A priority Critical patent/EP2429968A2/fr
Publication of EP2429968A2 publication Critical patent/EP2429968A2/fr
Withdrawn legal-status Critical Current

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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
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • 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
    • C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
    • C04B12/005—Geopolymer cements, e.g. reaction products of aluminosilicates with alkali metal hydroxides or silicates
    • 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
    • C04B28/008—Mineral polymers other than those of the Davidovits type, e.g. from a reaction mixture containing waterglass
    • 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
    • C04B28/021—Ash cements, e.g. fly ash cements ; Cements based on incineration residues, e.g. alkali-activated slags from waste incineration ; Kiln dust 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
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
    • 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
    • C04B2111/00094—Sag-resistant materials
    • 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

Definitions

  • the present invention relates to an alkali-activated aluminosilicate binder containing at least one organic compound according to the invention, to a process for shrinkage reduction in an alkali-activated aluminosilicate binder, and to the use of the alkali-activated aluminosilicate binder according to the invention as building material or binder.
  • Alkali-activated aluminosilicate binders are cementitious materials formed by reacting at least two components.
  • the first component is a reactive solid component containing SiO 2 and Al 2 O 3, e.g. As fly ash or metakaolin.
  • the second component is an alkaline activator, e.g. Sodium water glass or sodium hydroxide. In the presence of water, contact between the two components leads to hardening due to the formation of an aluminosilicate, amorphous to semi-crystalline network which is water-resistant.
  • the process of hardening takes place in solutions with pH values above 12 and differs from the hydration process of inorganic binders, such as e.g. of Portland cement.
  • inorganic binders such as e.g. of Portland cement.
  • This process which takes place predominantly via the "solution”
  • an incorporation of Al atoms (and probably also the Ca and Mg atoms) into the original silicate lattice of the reactive solid component takes place.
  • the properties of the products produced by this method are in particular depending on the concentration of the alkaline activator and the moisture conditions.
  • Alkali-activated aluminosilicate binders were investigated by Glukhovsky in the 1950s. The industry's interest in these binders has increased significantly in recent years due to the interesting properties of these systems. Alkali-activated aluminosilicate binders allow strengths that can exceed those of standard portland cements. Furthermore, these systems cure very quickly and have a very high chemical resistance and temperature resistance.
  • EP 1 236 702 A1 describes, for example, a water-glass-containing building material mixture for the production of chemical-resistant mortars based on a latently hydraulic binder, water glass and metal salt as a control agent. Granulated blastfurnace slag can also be used as a latent hydraulic component. As the metal salt alkali salts are called and used. For an overview of the substances which can be activated as alkali-activatable aluminosilicate binders, see the reference Alkali-Activated Cements and Concretes, Caijun Shi, Pavel V. Krivenko, DeIIa Roy, (2006), 30-63 and 277-297.
  • a major disadvantage of the known building material mixtures based on alkali-activatable aluminosilicate binders is the so-called shrinkage.
  • the onset of condensation undesirably leads to a volume contraction of the hardening binder.
  • This effect is even more pronounced compared to the shrinkage of cementitious binders in which a hydration reaction and no condensation reaction take place.
  • Average values of the shrinkage after 28 days under standard conditions according to DIN 12808-4 are, for example, for aluminosilicate binders at relative humidities up to 50% in the range down to -10 mm / m compared to 0 to -2 mm / m for cement.
  • No. 6,068,055 describes an improved method for sealing wells, the composition used containing a slag cement, an activator, a curable epoxy and an epoxy hardener.
  • the activator is preferably an alkaline substance, such as sodium hydroxide solution or waterglass, and in the case of the epoxy hardeners, preferably amines.
  • the composition does not shrink on curing and no microcracks are formed.
  • it is disadvantageous that the epoxides used are relatively expensive and can remain as a large amounts in the system remaining organic substances can adversely affect the chemical resistance and temperature resistance of the cured product.
  • epoxies and epoxy hardener components are considered to be sensitizing, so care must be taken during handling and processing (protective equipment).
  • DE 10 2006 045 853 discloses silicate binder-containing formulations which contain a plurality of N-containing compounds having a molecular weight in the range from 120 to 10,000 and one or more alkyl siliconates for increasing the viscosity.
  • the binders may be, for example, water glass, with kaolin being used as filler.
  • the additives used for this purpose should be characterized by a simple applicability with high effectiveness.
  • the shrinkage reducers used should be easily accessible and have the lowest possible raw material price.
  • an alkali-activated aluminosilicate binder containing at least one organic compound from the series amines and / or salts thereof, the system containing in the case of amines no curable epoxides, ionic liquids, imidazoles, guanidines, amino alcohols, carboxylic acid salts and alcohols with the exception of Polyethers, wherein the system does not contain alkyl siliconates.
  • alkali-activated binders in which the at least one organic compound is min. at least one organic amine or its salt is. It may be a tertiary amine, but preferred are secondary amines and more preferably primary amines.
  • the molecular weight of the amines used can be varied within wide limits. In one embodiment, higher molecular weight compounds such as polyethylene amines and imines, which are obtainable, for example, from BASF SE under the trade names Lupasole and Lupamine, are suitable. Amines having a molecular weight of ⁇ 200 g / mol, in particular ⁇ 100 g / mol are particularly suitable in the context of the present invention.
  • alkali-activated binders in which the at least one organic compound is at least one ionic liquid.
  • the molecular weight of the ionic liquid used can be varied within wide limits. Ionic liquids having a molecular weight of ⁇ 400 g / mol, in particular ⁇ 200 g / mol are particularly suitable in the context of the present invention.
  • the ionic liquid is preferably at least one cation selected from the group choline, tris 2- (hydroxyethyl) methylammonium, methyltri-n-butylammonium, tetramethylammonium, tetrabutylammonium, 1-methylimidazolium, 1 Ethylimidazolium, 1-propylimidazolium, 1-butylimidazolium, 2-ethylpyridinium, 1-ethyl-3-methylimidazolium, 1-n-butyl-3-ethylimidazolium, 1, 2-dimethylpyridinium, 1-methyl-2-ethylpyridinium, 1-methyl 2-ethyl-6-methylpyridinium, N-methylpyridinium, 1-butyl-2-methylpyridinium, 1-butyl-2-ethylpyridinium, 1-butyl-2-ethyl-6-methylpyridinium, N-butylpyridinium, 1-
  • organic compound at least one of the group of imidazoles.
  • the molecular weight of the imidazoles used can be varied within wide limits. Imidazoles having a molecular weight of ⁇ 400 g / mol, in particular ⁇ 200 g / mol are particularly suitable in the context of the present invention.
  • Suitable organic compounds in the context of the present invention are also guanidines.
  • the molecular weight of the guanidines used can be varied within wide limits.
  • guanidines having a molecular weight of ⁇ 400 g / mol, in particular ⁇ 150 g / mol are suitable. It is preferably at least one guanidines from the series 1, 1, 3,3-tetramethylguanindine, guanidinium acetate, methanesulfonate, chloride, bromide, - methyl sulfates, 1, 1-dimethylguanidine and 1, 1-diethylguanidine.
  • the organic compound used may be at least one aminoalcohol.
  • the molecular weight of the amino alcohols used can be varied within wide limits. Amino alcohols having a molecular weight of ⁇ 400 g / mol, in particular ⁇ 150 g / mol are particularly suitable in the context of the present invention.
  • the organic compound used may be at least one carboxylic acid salt.
  • the molecular weight of the carboxylic acid salts used can be varied within wide limits.
  • carboxylic acid Salts with a molecular weight of ⁇ 400 g / mol, in particular ⁇ 150 g / mol are particularly suitable in the context of the present invention. It is preferably at least one carboxylic acid salt from the series potassium acetate and betaine.
  • the alkali-activated binder according to the invention alternatively contains at least one organic compound from the group of alcohols with the exception of polyethers.
  • the molecular weight of the alcohols can be varied within wide limits. Alcohols having a molecular weight of ⁇ 400 g / mol, in particular ⁇ 100 g / mol are particularly suitable in the context of the present invention. It is preferably at least one alcohol from the series 3-
  • Methoxybutanol benzyl alcohol, 1,2-propanediol, hexanol, diacetone alcohol, ethyldiglycol, butyl alcohol, isopropanol, 2-ethylhexanol, ethanol and / or alkanediols such as 2-methylpentane-2,4-diol, neopentylglycol and n-butan-2, 5-diol.
  • the alkali-activated aluminosilicate binder preferably contains the at least one organic compound in a total amount of from 0.1 to 30% by weight, preferably from 0.2 to 10% by weight and in particular from 0.3 to 2.5% by weight.
  • immunosilicates from the fly ash series, blast furnace slag, aluminum-containing silica fume, natural aluminosilicates, preferably basalt, clays, marls, andesites or zeolites, and particularly preferably metakaolin, synthetic aluminosilicates and Portland cements CEM I, CEM II and CEM III and preferably aluminate cements, alumina cements or mixtures of these compounds are used.
  • the binder according to the invention contains this solid component preferably in an amount of 5 to 99 wt .-%, preferably from 10 to 60 wt .-%, and in particular from 15 to 30 wt .-%, which may also be mixtures.
  • the ratio of silicon to aluminum atoms is of great importance for the curing reaction of the alkali-activated binders.
  • a ratio of silicon to aluminum atoms between 10 and 1, 0 has proved to be advantageous, with a ratio between 6 and 1, 5 and in particular between 1, 8 and 2.2 and between 4.7 and 5.3 is preferred.
  • alkaline activator is a compound from the series sodium-water glass, potassium-water glass, lithium-water glass, ammonium-water glass, sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, alkali metal sulfates, sodium silicate, potassium silicate, preferably potassium water glass.
  • the alkaline activator is preferably contained in an amount of from 0.1 to 50% by weight, preferably from 2 to 25% by weight, and more preferably from 5 to 20% by weight, and they are also mixtures of these compounds can act.
  • the system according to the invention may additionally contain at least one filler, plastic, additive and / or pigment component.
  • Curing accelerators such as aluminum salts or phosphates, preferably aluminum phosphate, defoamers, rheology modifiers and dispersing aids are also suitable as additive components.
  • the total mixture preferably contains from 0.01 to 95% by weight, at least one of these further constituents, and in particular from 0.3 to 70% by weight.
  • the plastic component is in particular to be understood as meaning redispersible polymer powders which are preferably composed of at least one member of the series vinyl acetate, acrylate, styrene, butadiene, ethylene, versatic acid vinyl ester, urea-formaldehyde condensation products and melamine-formaldehyde condensation products, as well as, for example, polyethylene fibers or polypropylene fibers.
  • redispersible polymer powders which are preferably composed of at least one member of the series vinyl acetate, acrylate, styrene, butadiene, ethylene, versatic acid vinyl ester, urea-formaldehyde condensation products and melamine-formaldehyde condensation products, as well as, for example, polyethylene fibers or polypropylene fibers.
  • titanium dioxide can be used as the pigment component.
  • the fillers include rock powder, basalts, clays, feldspar, mica flour, glass flour, quartz sand or quartz powder, Bauxitmehl, alumina hydrate and wastes of alumina, Bauxit-, or corundum, ashes, slags, amorphous silica, limestone and mineral fiber materials in question , Also light fillers such as perlite, kieselguhr (diatomaceous earth), expanded mica (vermiculite) and foam sand can be used. Fillers from the series limestone, quartzes and amorphous silica are preferably used.
  • the alkali-activated aluminosilicate binder contains 2 and 60% by weight of water, and more preferably 5 to 40% by weight.
  • plasticizers and / or superplasticizers can also be added to the system.
  • amounts of from 0.1 to 3% by weight are to be regarded as preferred.
  • the present invention broadly relates to the use of at least one organic compound from the series amines and / or their salts, the system containing no curable epoxides in the case of the amines, ionic liquids, imidazoles, guanidines, amino alcohols, ammonium salts, carboxylic acid salts and alcohols, with the exception of polyethers, to reduce shrinkage and / or to reduce the formation of microcracks in alkali-activated hydraulic binders claimed.
  • the shrinkage is less than - 3 mm / m, in particular less than - 2 mm / m, preferably less than - 1 mm / m and particularly preferably 0 mm / m.
  • an expansion of the alkali-activated hydraulic binders can also be generated. This may be desirable, for example, when filling boreholes in order to achieve a seal.
  • the expansion is more than 0 mm / m, in particular more than 0.5 mm / m, preferably more than 1 mm / m and particularly preferably more than 2.0 mm / m.
  • the alkali-activated aluminosilicate binder according to the invention is also suitable for use in conjunction with inorganic or hydraulic or mineral binders, such as cement, in particular Portland cement, Portland metallurgical cement, Portland Silicastaubzement, Portlandpuzzolanzement, Portland fly ash cement, Portland slate cement, Portland limestone cement, Portlandkompositzement, blast furnace cement, pozzolanic cement, composite cement, Cement with low hydration heat, Cement with high sulphate resistance, Cement with low effective alkali content and quick lime, gypsum ( ⁇ - hemihydrate, ß-hemihydrate, ⁇ / ß-hemihydrate) and anhydrite (natural anhydrite, synthetic anhydrite, REA-anhydrite) ,
  • the amount ratio of the alkali-activated aluminosilicate binder used to the inorganic or hydraulic or mineral binder can be varied within wide limits. In particular, ratios of 1: 100 to 100: 1, preferably 1
  • the alkaline activated binder according to the invention contains the following components:
  • the binder contains from 20 to 40% by weight of reactive solid component (containing Si02 and Al2O3)
  • alkaline activators according to one of the preferred embodiments of the invention with the binder or to coat the binder and / or the fillers, if appropriate.
  • 2-component systems (2-component systems) are characterized in that an addition of a preferably aqueous alkaline activator solution to the binder takes place.
  • the alkaline activators according to the preferred embodiments of the invention are suitable. It is preferably also possible to use the organic compounds suitable for shrinkage reduction according to the invention in the aqueous activator solution.
  • Another object of the present invention is a process for the preparation of an alkali-activated hydraulic binder according to the invention.
  • the process according to the invention is characterized in that the reactive solid component, the alkaline activator, water and the at least one organic compound according to the invention and optionally further components are homogeneously mixed with one another.
  • the order of addition of the components is not critical, but it has proved to be advantageous, especially in the case of a liquid organic compound according to the invention to present them with water and the alkaline activator and then add the solid.
  • the process can be carried out both batchwise and continuously, with static mixers, extruders, Rilem mixers and drills with stirring attachments being suitable as apparatus. By stirring the combined liquid and solid ingredients, the binder is activated, resulting in the hardening of the mortar.
  • the binder system according to the invention is preferably used for the production of mortars and concretes.
  • the binder system described above is usually mixed with other components such as fillers, latent hydraulic substances and other additives.
  • the addition of the powdered alkaline activator is preferably carried out before the said components are mixed with water, so that a so-called dry mortar is prepared.
  • the activation component is in powder form, preferably as a mixture with the binders and / or sand before (1 K system).
  • the preferred aqueous alkaline activator may be added to the other powdered components. But it is also possible to first mix the powdered components with water and then add the alkaline activator. In these cases one speaks then of a two-component binder system (2-K system).
  • a further subject of the present invention is a cured product which contains the alkali-activated aluminosilicate binder according to the invention.
  • the binder is preferably cured between -10 and 90 0 C. Depending on the composition, very good strengths are achieved after only a few hours, so that in most cases the manufactured articles ensure almost full load after just 4 to 10 hours.
  • the binders according to the invention are suitable for a large number of applications and can advantageously replace Portland cement in the known fields of application.
  • the binders may be used as or as part of construction site concrete, concrete products such as precast concrete, concrete products, concrete and in-situ concrete, shotcrete, ready-mixed concrete, building adhesives and ETICS adhesives, concrete repair systems, 1 K and / or 2K sealing slurries, screeds, floor leveling and leveling compounds, Tile adhesives, grout, plaster and cement plasters, plasterboard, adhesives and sealants, PCC coating systems, repair mortar, fillers and coatings are used.
  • the proposed alkali-activated aluminosilicate binders containing at least one organic compound according to the invention have a markedly reduced or preferably no shrinkage during curing, whereby the formation of microcracks is also avoided.
  • the systems according to the invention have good processability and in the cured product the property profile, in particular the resistance to chemicals and temperature resistance, is not adversely affected by the at least one organic compound used according to the invention.
  • the preparation of the alkali-activated aluminosilicate binder is expediently carried out by first premixing all pulverulent constituents according to Table 1.
  • the binders granulated blastfurnace, microsilica and / or metakaolin are premixed together with the filler quartz sand.
  • DIN EN 196 the preparation of a homogeneous mixture by adding the aqueous alkaline activator with stirring.
  • the organic compound according to the invention is first premixed with the aqueous alkaline activator and subsequently added to the other constituents with stirring.
  • the specimens are always stored during the entire measurement both in the form and after removal from the mold in a controlled climate (room air) at a temperature of 23 ° C and a relative humidity of 50%.
  • a controlled climate room air
  • Table 1 Test formulations (in parts by mass) and shrinkage after 28d (mm / m)

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

Abstract

L'invention concerne un liant aluminosilicate activé par des alcalis, contenant au moins un composé organique de la série constituée des amines et/ou de leurs sels, le système, dans le cas des amines, ne contenant pas d'époxydes durcissables, des liquides ioniques, de l'imidazole, de la guanidine, des aminoalcools, des sels d'acide carboxylique et des alcools, à l'exception des polyéthers, le système ne contenant pas d'alkylsiliconates. Pendant le durcissement du liant selon l'invention, il se produit un retrait faible ou nul, ce qui permet d'éviter la formation de microfissures. L'invention concerne également un procédé de fabrication du liant aluminosilicate activé par des alcalis selon l'invention, et son utilisation.
EP10718140A 2009-05-14 2010-04-29 Réduction de retrait pour des liants aluminosilicate activés par des alcalis Withdrawn EP2429968A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10718140A EP2429968A2 (fr) 2009-05-14 2010-04-29 Réduction de retrait pour des liants aluminosilicate activés par des alcalis

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09160262 2009-05-14
PCT/EP2010/055780 WO2010130582A2 (fr) 2009-05-14 2010-04-29 Réduction de retrait pour des liants aluminosilicate activés par des alcalis
EP10718140A EP2429968A2 (fr) 2009-05-14 2010-04-29 Réduction de retrait pour des liants aluminosilicate activés par des alcalis

Publications (1)

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EP2429968A2 true EP2429968A2 (fr) 2012-03-21

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FR3030497B1 (fr) * 2014-12-23 2019-06-07 Saint-Gobain Weber Liant a base de compose mineral solide riche en oxyde alcalino-terreux avec activateurs phosphates
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CN109836066A (zh) * 2019-03-29 2019-06-04 山东淄创新材料科技有限公司 白云岩废渣免烧砖用激发剂及其制备方法
CN112851289A (zh) * 2021-01-29 2021-05-28 江苏工程职业技术学院 碱激发灌浆料

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