The present invention relates to a grinding method comprising grinding a mineral composition to be ground in the presence of an adjuvant composition comprising at least one polymer (P) of formula (1), wherein: - M represents, independently of one another, H+31/vz(A)(A) ≤ 6500 g/mol, and wherein the mineral composition to be ground comprises 0% to 80% by weight of clinker, relative to the total weight of the mineral composition to be ground.
The present invention relates to an adjuvant composition comprising, in relation to the total weight of the adjuvant composition: - 1% to 60% by weight of a calcium salt, and - crystallized blast furnace slag and/or an aluminum salt. The present invention also relates to a hydraulic binder composition and to a hydraulic composition comprising such an adjuvant composition.
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
3.
NOVEL ACCELERATORS FOR HYDRAULIC COMPOSITIONS BASED ON GRANULATED BLAST FURNACE SLAG
The present invention relates to an adjuvant composition comprising, relative to the total weight of the adjuvant composition: - 1% to 60% by weight of an aluminum salt, and - a calcium salt and/or crystallized blast furnace slag. The present invention also relates to an adjuvanted hydraulic binder composition and to a hydraulic composition comprising such an adjuvant composition.
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
4.
NOVEL HYDRAULIC BINDER COMPOSITIONS AND HYDRAULIC COMPOSITIONS BASED ON CALCINED CLAYS
22, COOH, a C1-C6 ester or an ammonium group, Alk is a linear or branched C2-C6 alkylene group, and n is an integer between 2 and 10,000, preferably between 6 and 250. Figure pour l'abrégé : Aucune
The present invention relates to a hydraulic binder composition comprising: - a hydraulic binder comprising at least one aluminosilicate compound, preferably blast furnace slag, and an alkaline or sulfate activator and a maximum of 10 wt.% of clinker, preferably between 0 and 10 wt.% of clinker; - nitric acid or one of its salts except zinc nitrate.
C04B 28/00 - 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
The present invention relates to the use, for improving the mechanical strength of a hydraulic composition based on a cement composition comprising: - from 20 to 64% by weight of clinker, - from 5 to 60% by weight of activated clay, - from 0 to 35% by weight of limestone, - from 0 to 10% by weight of calcium sulfate, the proportions being relative to the dry weight of the cement composition, of from 0.2 to 5.0% by weight, relative to the dry weight of cement composition, preferably from 0.2 to 1.0% by weight, relative to the dry weight of cement composition, of at least one adjuvant comprising at least one alkali metal salt chosen from alkali metal formate, carbonate, chloride, hydroxide, oxalate, thiocyanate, silicate, sulfate or nitrate salts or a mixture thereof.
The present application concerns the use of a molecule producing an aqueous solution exhibiting a dispersive portion of more than 25%, for improving workability retention in a hydraulic composition based on a hydraulic binder composition comprising at least one hydraulic binder comprising aluminosilicates and a maximum of 10% by weight of clinker, preferably from 0 to 10% by weight of clinker.
C04B 28/00 - 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
The present invention relates to a hydraulic binder composition comprising: - a hydraulic binder comprising at least one alumino-silicate compound, for example blast furnace slag, and an alkaline or sulfate activator and a maximum of 10 wt% of clinker, preferably between 0 and 10 wt% of clinker; - a guanidine salt and/or a zinc salt; - a polymer (P) comprising units of formulae (I) and (II).
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
The application describes an admixture containing a polymer as an agent for fluidifying a cementitious composition comprising: - from 20 to 64 wt.% clinker; - from 5 to 60 wt.% activated clay; - from 0 to 35 wt.% limestone; - from 0 to 10 wt.% calcium sulphate, the proportions being relative to the dry weight of the cementitious composition.
The invention relates to a composition (C) comprising 10 to 99 wt.% secondary or tertiary alkanolamine (A) in the form of a salt , preferably an inorganic acid salt, and 1 to 90 wt.% of non-salified alkanolamine (A).
C04B 28/02 - 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
The invention relates to a compound of formula (I) and to the use thereof, in particular as a chelating agent for positively charged ions or as a fluidizing agent for hydraulic compositions. The invention also relates to a hydraulic composition comprising a compound of formula (I), at least one hydraulic binder, at least one aggregate, and water.
C08G 65/331 - Polymers modified by chemical after-treatment with organic compounds containing oxygen
C04B 24/32 - Polyethers, e.g. alkylphenol polyglycolether
C08G 65/332 - Polymers modified by chemical after-treatment with organic compounds containing oxygen containing carboxyl groups, or halides or esters thereof
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
C04B 103/30 - Water reducers, plasticisers, air-entrainers
The application relates to a method for grinding a hydraulic binder comprising: a) introducing: - a hydraulic binder, and - a composition B comprising at least one grinding aid B, in the first chamber (12) of a horizontal grinder (11) comprising several chambers (12, 14), including a first chamber (12) and a last chamber (14), each chamber (12) being separated from the adjacent chamber (14) by a diaphragm (17), whereby a composition b comprising the hydraulic binder and the composition B is obtained in the first chamber (12), b) grinding the composition b in the horizontal grinder (11), whereby the composition b moves from the first chamber (12) to the last chamber (14) and a ground composition C is obtained at the outlet of the last chamber (14), characterised in that it comprises, during the grinding step, introducing, into the last chamber (14), a composition A comprising at least one grinding aid A comprising an amino alcohol, and the grinding unit intended for implementing same.
C04B 28/02 - 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
14.
METHOD FOR ANALYSING THE QUANTITY OF CLAY IN A SAND
The present application relates to the use of a compound having the formula (I) to establish the quantity of clay in a sand and/or to establish the quantity of compound AMAA to be added to a hydraulic binder composition using a sand R1nn-XR2(I), in which R1represents a C1 to C4 alkyl group, which may be linear or branched, or a coloured compound; R222322- group; n represents an integer between 1 and 500, preferably between 4 and 250; X is O or NH.
C04B 28/02 - 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
The present invention relates to a method for using a secondary or tertiary alkanolamine for grinding cement, comprising: - forming an inorganic acid salt of the alkanolamine; - adding the salified alkanolamine to a grinder.
C04B 28/02 - 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
The invention concerns an additive for hydraulic binder comprising: - at least a dialkanolamine comprising from 2 to 8 carbon atoms, and - at least a polyol preferably chosen from a diol, a triol, a tetraol and mixtures thereof, and the uses thereof as a grinding aid for hydraulic binder precursor, to prevent the formation of rust-colored stains at the surface of a hydraulic composition and/or to improve the compressive strength of a set hydraulic composition.
C04B 28/02 - 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
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
The invention concerns a method for forming a surface course on at least one part of a surface of a composition made from hydraulic binder to be treated, comprising the steps consisting of: a) applying a composition comprising: - at least one hydraulic binder, and - at least one aggregate, the Los Angeles coefficient LA of which is less than or equal to 0, to at least one part of a surface of a composition made from fresh hydraulic binder, b) floating the at least one part of the surface to which the composition has been applied, then c) applying a surface deactivator composition to the at least one part of the surface to which the composition has been applied, then d) curing the fresh hydraulic binder composition, then e) eliminating the uncured hydraulic binder layer on the surface, and the composition made from hydraulic binder, at least part of a surface of which comprises a surface course likely to be obtained. This surface course has improved durability.
C04B 28/02 - 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
The invention is mainly directed to a hydraulic composition comprising: - water; - hydraulic binder; - at least one setting retarder; - at least one polysaccharide; the weight ratio water/hydraulic binder being greater than 1.5. The invention is also directed to the use of said composition as a mixture A in a grout. The invention is finally directed to a corresponding method for preparing a grout and to the grout obtained thereby.
C04B 28/02 - 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
E21D 11/10 - Lining with building materials with concrete cast in situShuttering or other equipment adapted therefor
The present invention relates to a luminescent insert capable of being included in a construction element, comprising a transparent or translucent solid matrix (16), and at least one luminescent material (18) dispersed in said solid matrix, said insert defining an outer surface (20). The luminescent material is a coloured luminescent composite pigment, made up of at least one luminescent pigment and at least one dye. The present invention also relates to a construction element comprising at least one such luminescent insert.
The invention relates to a coloured luminescent composite pigment comprising an association of at least one luminescent pigment having an average particle size of between 50 and 2000 μm and at least one colouring agent. The invention also relates to compositions and materials comprising said pigment, to the method for the production thereof and to the use of same for colouring materials, particularly of a hydraulic binder composition.
The application relates to a process for creating patterns on a surface of a composition based on hydraulic binder, comprising the application, by printing, of a deactivating (D1) or acid (A1) composition to a portion or to the whole of a surface of a composition based on hydraulic binder.
C04B 41/72 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone of only artificial stone involving the removal of part of the materials of the treated articles, e.g. etching
The invention relates to a block copolymer comprising: at least one block A that does not comprise a phosphonate group and comprises at least one poly(alkylene oxide) group, and at least one block B produced by the polymerisation of a monomer B1 or a mixture of ethylenically unsaturated monomers comprising at least one monomer B1, where a monomer B1 is an ethylenically unsaturated monomer comprising at least one phosphonate function. The invention also relates to the method for the production thereof by means of controlled radical polymerisation RAFT, and to the uses of same.
C08G 81/02 - Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
C08F 230/02 - Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing phosphorus
C08G 65/332 - Polymers modified by chemical after-treatment with organic compounds containing oxygen containing carboxyl groups, or halides or esters thereof
The invention relates to an invert emulsion consisting of a continuous oil phase comprising at least one emulsifier, wherein an aqueous phase comprising at least a hydraulic binder setting retarder is dispersed. The invention also relates to positive or negative deactivation methods using the invert emulsion of the invention.
B28B 7/38 - Treating surfaces of moulds, cores, or mandrels to prevent sticking
C04B 41/00 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone
C04B 41/46 - Coating or impregnating with organic materials
C04B 41/53 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone involving the removal of part of the materials of the treated article
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
24.
CURING COMPOSITION FOR A HYDRAULIC COMPOSITION PROVIDING REINFORCED ADHESION
The present invention relates to the use of a composition, including an active system consisting of an emulsion of paraffin wax and a latex consisting of a colloidal oil-in-water emulsion of a polymer or of a copolymer, for curing a hydraulic composition and at the same time impart adhesive properties to the surface of said hardened hydraulic composition.
The present invention relates to the use of an additive system for a hydraulic composition including: at least one polyalkoxylated phosphonate polymer; at least one polyalkoxylated polycarboxylate polymer; and at least one retarding agent of formula (I): C1R'H(OH)[CH(OH)]nC(O)O1R (I) for improved maintenance of the rheology of hydraulic compositions of Portland cement.
C04B 28/02 - 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
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
INSTITUT NATIONAL POLYTECHNIQUE DE TOULOUSE (France)
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE (France)
Inventor
Leising, Frédéric
Mouloungui, Zéphirin
Abstract
The invention relates to a method for the synthesis of α/α'-alcoxylated glycerol linear carbonic esters, wherein the following are brought into contact at a reaction temperature lower than 220°C: a quantity of at least one precursor selected from the group consisting of α/α'-alcoxylated glycerol cyclo-carbonates; a quantity of at least one catalyst selected from the group consisting of metal oxides, Lewis acids, organometallic catalysts and mineral bases; and a quantity of at least one organic primer.
The invention relates to a copolymer including a main hydrocarbon chain and side groups comprising carboxylic groups and polyoxyalkylated groups, characterized in that same further comprises gem-acetophone groups, an adjuvant for mineral particle suspensions including said copolymer and a method for preparing said copolymer. The invention also relates to the use of said copolymer for fluidifying and maintaining the fluidity of mineral particle suspensions and for reducing the sensitivity of hydraulic compositions to clays and alkaline sulfates. Finally, said invention relates to a composition of mineral particles including said copolymer.
C08G 81/02 - Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
The present invention relates to a method for creating patterns on a surface of the hydraulic binder composition, including depositing a stencil onto the surface of the fresh hydraulic binder composition, and then applying a deactivating composition (A) on the thus-covered surface.
C04B 41/72 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone of only artificial stone involving the removal of part of the materials of the treated articles, e.g. etching
The present invention relates to an aqueous composition including: at least one retarder; at least one water-soluble film-forming agent; a mold release oil; and a latex that is not alkali-soluble. Said invention further relates to a method for producing deactivated premade parts from a hydraulic binder composition, in particular concrete, including the steps of coating a mold using the composition according to the invention, feeding the fresh hydraulic binder composition, in particular mortar or concrete, into the resulting coated mold, optionally after drying the coating, withdrawing the hardened molded part from the mold, and removing the deactivated film from the surface of the molded part by washing or brushing. Finally, said invention relates to the use of the composition according to the invention for the negative deactivation of a part made of a hydraulic binder material and to facilitate the mold release of said part.
C04B 41/72 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone of only artificial stone involving the removal of part of the materials of the treated articles, e.g. etching
The invention mainly concerns an adjuvant in the form of an aqueous dispersion, comprising: - mineral nanoparticles; - a hardening accelerator for hydraulic compositions; and - a dispersant polymer of which the pH is between 2 and 11, a method for preparing same and for preparing a hydraulic composition and the use of same for accelerating the hardening of hydraulic compositions.
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
The invention mainly concerns an adjuvant in the form of an aqueous dispersion, comprising: - mineral nanoparticles; - a hardening accelerator for hydraulic compositions; and - a dispersant polymer of which the pH is between 2 and 11, a method for preparing same and for preparing a hydraulic composition and the use of same for accelerating the hardening of hydraulic compositions.
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
The invention relates to an anti-filming surface-active admixture for hydraulic binders, including at least one fatty alcohol and at least one oil, to the method for preparing same, and to a method for preparing a hydraulic binder composition suitable for the manufacture of screeds or concretes, comprising the step of adding, to the hydraulic binder composition, the admixture according to the invention in a metered amount of 0.1 to 5 wt % with respect to the weight of the hydraulic binder.
C04B 28/02 - 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
C04B 28/14 - 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
C04B 28/16 - 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
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
33.
SET-ACCELERATING ADMIXTURE HAVING IMPROVED STABILITY
The present invention mainly relates to an accelerating admixture for hydraulic compositions including, in an aqueous solution: the product of the reaction of an alkanolamine with a concentrated strong acid; sulfate anions; and alkali or alkaline-earth cations having a pH between 5 and 12. The invention further relates to a method for preparing same, as well as to a method for preparing hydraulic compositions including the step of adding such an admixture to the hydraulic binder before, during, or after grinding.
C07C 213/08 - Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton by reactions not involving the formation of amino groups, hydroxy groups or etherified or esterified hydroxy groups
The invention relates mainly to a polymer comprising a hydrocarbon-based main chain bearing carboxylic groups and polyalkoxylated chains and up to 4% by weight of antioxidant groups, relative to the weight of the final polymer, which are grafted to the main chain. It also relates to a process for preparing such a polymer and to an adjuvant which is of use as a dispersant of suspensions of mineral particles comprising same. Finally, it relates to the use of such a polymer for fluidifying suspensions of mineral particles and reducing the water demand of hydraulic compositions.
C08J 3/21 - Compounding polymers with additives, e.g. colouring in the presence of a liquid phase the polymer being premixed with a liquid phase
C08F 8/30 - Introducing nitrogen atoms or nitrogen-containing groups
C08F 8/32 - Introducing nitrogen atoms or nitrogen-containing groups by reaction with amines
C08G 81/02 - Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
The invention relates to a copolymer including a main hydrocarbon chain and side groups comprising carboxyl groups and polyoxyalkyl groups, characterized in that the copolymer further comprises gem-bisphosphonate groups. The invention also relates to an additive for suspensions of inorganic particles including said copolymer and to a method for preparing said copolymer. The invention finally relates to the use of said copolymer for fluidifying and maintaining the fluidity of suspensions of inorganic particles and for reducing the sensitivity of hydraulic compositions to clays and alkaline sulfates, as well as to a composition of inorganic particles including said copolymer.
C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
C04B 28/00 - 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
C08F 8/40 - Introducing phosphorus atoms or phosphorus-containing groups
C04B 28/02 - 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
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
The present invention relates to a polymer comprising the units: and the side chains comprising R2 groups, to the process for preparing same and to the uses thereof as a thinner in hydraulic compositions.
C08F 220/28 - Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
C08F 220/58 - Amides containing oxygen in addition to the carbonamido oxygen
C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
C08F 283/06 - Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass on to polyethers, polyoxymethylenes or polyacetals
38.
POLYMER COMPRISING A HYDROLYSABLE FUNCTION THAT CAN BE USED AS A THINNER
The invention relates to a polymer comprising the following units and side chains comprising R2 groups, to the process for preparing same and to the uses thereof as a thinner in hydraulic compositions.
C08F 220/28 - Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
C08F 220/58 - Amides containing oxygen in addition to the carbonamido oxygen
C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
C08F 283/06 - Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass on to polyethers, polyoxymethylenes or polyacetals
The present invention relates to a polymer comprising the following units: and side chains comprising R2 groups, to the process for preparing the same and to the uses thereof as a thinner in hydraulic compositions.
C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
C08F 283/06 - Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass on to polyethers, polyoxymethylenes or polyacetals
The invention relates to an adjuvant for reducing Cr (VI) ions to Cr (III) ions comprising an aqueous solution of a combination of iron (II) and a polysaccharide or a salt thereof and also to the preparation method thereof. It also relates to a method for preparing a material having a reduced content of chromium (VI). It finally relates to the use of said adjuvant for the reduction of chromium (VI) ions to chromium (III) ions.
C04B 28/02 - 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
C04B 28/14 - 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
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
The invention relates to an emulsion constituted of an oily phase dispersed in an aqueous phase, comprising a non-quaternary amino surfactant which is a diamine of the following formula; and an acid having a set-retarding effect and also to a process for the preparation thereof. It furthermore relates to a process for the surface deactivation of a hydraulic composition, comprising the steps consisting in; (a) forming the hydraulic composition; (b) applying, to the surface of the hydraulic composition, the emulsion according to the invention, which by breaking releases the oily phase; and (c) after hardening of the hydraulic composition, removal of the film formed with the surface layer of unhardened hydraulic composition.
C04B 40/06 - Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers
C04B 41/53 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone involving the removal of part of the materials of the treated article
C04B 41/72 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone of only artificial stone involving the removal of part of the materials of the treated articles, e.g. etching
The invention relates to a method for inerting clays into a hydraulic composition including one step consisting of exposing a hydraulic composition or a component of a hydraulic composition to a compound with the following formula: R-COO-, (Mn+)1/n (I); a hydraulic composition including said compound with the formula (I); a method for preparing said hydraulic composition; a pretreated granulate that can be obtained by mixing a granulate with said compound with the formula (I); an additive for inerting clay including a superplasticiser and said compound with the formula (I); and the use of said compound with the formula (I) for inerting the clays of hydraulic compositions.
C04B 28/02 - 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
The invention relates to an anti-filming surface-active admixture for hydraulic binders that includes at least one fat and at least one anti-caking agent, to the method for preparing same, and to a method for preparing a hydraulic binder composition suitable for the manufacture of screeds or self-compacting concrete (SCC), said method comprising the step of adding, to the hydraulic binder, the admixture of the invention in a metered amount of between 50 and 1500 g/m3 of screed or concrete.
C04B 28/02 - 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
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
The invention relates to an anti-filming surface-active admixture for hydraulic binders that includes at least one fat and at least one anti-caking agent, to the method for preparing same, and to a method for preparing a hydraulic binder composition suitable for the manufacture of screeds or self-compacting concrete (SCC), said method comprising the step of adding, to the hydraulic binder, the admixture of the invention in a metered amount of between 50 and 1500 g/m3 of screed or concrete.
C04B 28/02 - 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
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
The invention mainly relates to a method for preparing polyalkoxylated polycarboxylates in which is reacted, in the presence of water and a catalyst, at a temperature of 120 to 250°C: at least one polycarboxylic acid produced by polymerizing at least one unsaturated carboxylic acid; and at least one polyether having a free hydroxyl group capable of reacting with a carboxylic function of said polycarboxylic acid, characterized in that the catalyst is an alkaline or alkaline-earth salt of a strong protic acid.
The invention mainly relates to the use of a (co)polymer having a main chain essentially consisting of (meth)acrylic units and polyoxyalkylated side-chains containing statistically-distributed hydrophobic units as an adjuvant for lowering the viscosity of hydraulic compositions.
The invention relates to an admixture system for concrete containing a combination of: (a) a superplasticizer, (b) an accelerator, and (c) a rheology extender. The invention also relates to a method for preparing prefabricated concrete that includes the step of respectively adding, in a suitable quantity: (a) a superplasticizer, (b) an accelerator, and (c) a rheology extender to the concrete paste, either simultaneously or consecutively. Finally, the invention relates to the use of such a prefabricated concrete preparation system.
C04B 28/02 - 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
C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
The invention relates to a fast hydraulic binder that includes cement, at least a first super-plasticiser, a calcium salt and at least a second super-plasticiser. The second super-plasticiser is different from the first super-plasticiser and includes a main chain and pending groups connected to the main chain and adapted so as to leave the main chain in a basic medium, whereby the second super-plasticiser has a fluidifying action that increases at least temporarily with time in the basic medium.
C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
C04B 28/02 - 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
50.
Additive for reducing chromium (VI) to chromium (III) ions
The invention relates to an additive for reducing Cr(VI) ions to Cr(III) ions, comprising a complex of tin(II) and a carboxylic acid or a salt thereof, and to the process for the preparation thereof. It also relates to a process for preparing a material having a low chromium(VI) content. Finally, it relates to the use of said additive for reducing chromium(VI) ions to chromium(III) ions.
The invention relates to the use of compolymers having a main chain essentially obtained from maleic monomers and allylic monomers and polyoxyalkylated side-chains containing statistically-distributed hydrophobic units as an adjuvant for lowering the viscosity of hydraulic compositions.
