Abstract: Disclosed is a method for using a secondary or tertiary alkanolamine for grinding cement, the method including: forming an inorganic acid salt of the alkanolamine; and adding the salified alkanolamine to a grinder.

Abstract: Disclosed is a method for grinding a hydraulic binder, including: a) introducing:—a hydraulic binder, and—a composition B including at least one grinding aid B into the first chamber of a horizontal grinder including several chambers, including a first chamber and a last chamber, each chamber being separated from the adjacent chamber by a diaphragm, whereby a composition ? including the hydraulic binder and composition B is obtained in the first chamber; and b) grinding composition ? in the horizontal grinder, whereby composition ? moves from the first chamber to the last chamber and a ground composition C is obtained at the outlet of the last chamber. At the grinding step, the method includes introducing into the last chamber a composition A including at least one grinding aid A including an aminoalcohol. Also disclosed is a corresponding grinding unit.

Abstract: A hydraulic composition including water; a hydraulic binder; at least one setting retarder; and at least one polysaccharide; the weight ratio of the water/hydraulic binder being greater than 1.5, methods of using the composition as a mixture in a grout and a corresponding method for preparing a grout and the grout thereby obtained.

Abstract: A method for preventing formation of rust-colored stains on the surface of a hydraulic composition includes mixing the hydraulic composition with an additive for hydraulic binder including at least a dialkanolamine including from 2 to 8 carbon atoms, and at least a polyol preferably chosen from a diol, a triol, a tetraol and mixtures thereof. Other uses include a grinding aid for hydraulic binder precursor, and/or improving the compressive strength of a set hydraulic composition.

Abstract: Disclosed is a colored luminescent composite pigment including an association of at least one luminescent pigment having an average particle size of between 50 and 2000 ?m and at least one coloring agent. Also disclosed are compositions and materials including the pigment, to the method for the production thereof and to the use of same for coloring materials, particularly of a hydraulic binder composition.

Abstract: A copolymer includes a main hydrocarbon chain and side groups including carboxylic groups and polyoxyalkylate groups. The copolymer further includes gem-bisphosphonate groups. The copolymer can be included in an admixture for suspensions of mineral particles and in a composition of mineral particles. The copolymer can also be used for fluidifying and maintaining fluid, suspensions of mineral particles and for reducing the sensitivity of hydraulic compositions to clays and alkaline sulfates.

Abstract: Disclosed is a block copolymer including: at least one block A not including any phosphonate group, and including at least one poly(alkylene oxide) group and at least one block B obtained by polymerization of a monomer B1 or of a mixture of monomers with ethylenic unsaturation including at least one monomer B1, wherein a monomer B1 is a monomer with ethylenic unsaturation including at least one phosphonate function, to its preparation method by RAFT controlled radical polymerization and to its uses.

Abstract: Disclosed is a colored luminescent composite pigment including an association of at least one luminescent pigment having an average particle size of between 50 and 2000 ?m and at least one coloring agent. Also disclosed are compositions and materials including the pigment, to the method for the production thereof and to the use of same for coloring materials, particularly of a hydraulic binder composition.

Abstract: The invention chiefly concerns a method for preparing polyalkoxylated polycarboxylates in which the following are caused to react in the presence of water and a catalyst at a temperature of between 120 and 250° C.: at least one polycarboxylic acid obtained by polymerization of at least one unsaturated carboxylic acid; and at least one polyether carrying a free hydroxyl group capable of reacting with a carboxylic function of the said polycarboxylic acid, characterized in that the catalyst is an alkaline or alkaline-earth salt of a strong protic acid.

Abstract: A copolymer includes a main hydrocarbon chain and side groups including carboxylic groups and polyoxyalkylate groups. The copolymer further includes gem-bisphosphonate groups. A composition, such as n admixture for suspensions of mineral particles, includes the copolymer. The copolymer can be used for fluidifying suspensions of mineral particles and maintaining the fluidity of such suspensions. The copolymer can also be used for reducing the sensitivity of hydraulic compositions to clays and alkaline sulfates.

Abstract: Alpha/alpha-prime/alkoxylated glycerol linear carbonic esters have formula (VI): where p is an integer higher than 1, x is an integer equaling 0 or 1 with x not always being zero, and M1 is hydrogen (H). Q1 can be a hydrocarbon aliphatic group, an amino hydrocarbon group or an oxygenated amino hydrocarbon group. G1 can be an ?/??-alkoxylated propyl group of general formula (II?): where R4, R5 and R6 are variously hydrogen (H), an alkyl or an amino-alkyl group having 1 to 5 carbon atoms, or general formula (VII): where R7 is a H or a hydrocarbon group having 1 to 6 carbon atoms, and m is an integer between 0 and 10 inclusive, and X is —O— or —NH—.

Abstract: A method for the synthesis of ?/??-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 ?/??-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. A composition containing at least one novel ?/??-alkoxylated glycerol linear carbonic ester.

Abstract: The invention relates to an anti-filming surface adjuvant for hydraulic binders comprising at least one fat and at least one anti-caking agent, to its preparation method as well as to a method for preparing a hydraulic binder composition suitable for making screeds or self-compacting concretes (SCC) including the step consisting of adding to the hydraulic binder the adjuvant according to the invention at a dosage comprised between 50 and 1,500 g/m3 of screed or of concrete.

Abstract: 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.

Abstract: 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 anti-oxidant groups, relative to the weight of the final polymer, grafted to the main chain. It also relates to a method for preparing such a polymer and to an admixture which is of use as a plasticizer of suspensions of mineral particles comprising same. Finally, it is related to the use of such a polymer for fluidifying suspensions of mineral particles and reducing the water demand of hydraulic compositions.

Abstract: The invention relates to a copolymer comprising a main hydrocarbon chain and side groups including carboxylic groups, polyoxyalkylate groups, and gem acetophosphonate groups, an adjuvant for suspensions of mineral particles comprising said copolymer and a method for preparing said copolymer. Finally it also relates to the use of said copolymer for fluidifying and maintaining fluidity of suspensions of mineral particles and for reducing the sensitivity of hydraulic binders to clays and alkali metal sulfates. Finally it relates to a composition of mineral particles comprising this copolymer.

Abstract: A method for inerting clays in a hydraulic composition includes one step of putting a hydraulic composition or a constituent of a hydraulic composition in contact with a compound of the formula (I) R—COO31, (Mn+)1/n, wherein a method for making hydraulic composition, a pretreated granulate which may be obtained by mixing a granulate with the compound of formula (I), and an additive for inerting clays including a superplasticizer and the compound of formula (I) are described.

Abstract: The present invention relates to a method for creating patterns on a surface of the hydraulic binder composition comprising the deposition on the surface of the fresh hydraulic binder composition of a stencil and then application of a deactivating composition (A) on the thereby covered surface.

Abstract: The invention relates to a copolymer comprising a main hydrocarbon chain and side groups including carboxylic groups and polyoxyalkylate groups, characterized in that it further includes gem acetophosphonate groups, an adjuvant for suspensions of mineral particles comprising said copolymer and a method for preparing said copolymer. Finally it also relates to the use of said copolymer for fluidifying and maintaining fluidity of suspensions of mineral particles and for reducing the sensitivity of hydraulic binders to clays and alkaline sulfates. Finally it relates to a composition of mineral particles comprising this copolymer.

Abstract: 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 anti-oxidant groups, relative to the weight of the final polymer, grafted to the main chain. It also relates to a method for preparing such a polymer and to an admixture which is of use as a plasticizer of suspensions of mineral particles comprising same. Finally, it is related to the use of such a polymer for fluidifying suspensions of mineral particles and reducing the water demand of hydraulic compositions.