A method of blending concrete is provided wherein there is a determination of a standard volume of water to add to a dry concrete mix to provide hydrated concrete with a desired slump value, and then calculating a substitution volume of an aqueous composition including colloidal silica to be used in place of an eliminated portion of the standard volume of the water, and mixing the substitution volume of the aqueous composition with the concrete mix.

Thermally conductive cementitious compositions for use in flooring installations that are applied over a heat radiating flooring system to increase the thermal conductance of the flooring system and increase the rate of heating the flooring system. The thermally conductive cementitious compositions include a cementitious composition, amorphous flake graphite carbon, and an aqueous solution suitable for use as a thermally conductive mortar, grout or adhesive for flooring installations. The thermally conductive cementitious compositions also include a cementitious composition, mesh fine aluminum oxide, mesh coarse aluminum oxide, and an aqueous solution that provides a thermally conductive mortar, grout or adhesive for use in flooring installations.

A method for controlling the volume expansion of a hydraulically setting composition including steel making slag, the method including a step of adding a silica source to the composition. Furthermore, hydraulically setting compositions obtained by such methods and their uses.

A mixture along with methods of preparing, uses and/or products made from the mixture and methods of preparing products made from the same. Where the mixture contains 0.5% to 10% by weight of one or more superabsorbent polymers and 90% to 99.5% by weight of one or more protective-colloid-stabilized polymers based on one or more ethylenically unsaturated monomers and optionally one or more additives. Where the percentages by weight are based on the dry weight of the mixture and wherein no mineral binder is present within the mixture.

The present invention relates to a construction material composition comprising at least one non-ionic copolymer and the use of said construction material composition. Further, the present invention relates to a non-ionic copolymer and the use thereof for modifying robustness against clay deviations.

The present invention relates to a process for producing a redispersible dispersion powder, to the redispersible dispersion powder obtainable by this process, to an aqueous dispersion obtainable by step (1) of this process, and to a building material composition comprising the redispersible dispersion powder and/or the aqueous dispersion, to the use of the redispersible dispersion powder in a building material composition and to the use of the aqueous dispersion for production of a redispersible dispersion powder.

Vinyl acetate-ethylene and/or styrene-(meth)acrylic ester copolymers along with processes for preparing the same and uses for the same. Wherein the vinyl acetate-ethylene and/or styrene-(meth)acrylic ester copolymers are in the form of water-redispersible powders for producing hydraulically-setting building material dry formulations. Where the storage stability of the protective-colloid-stabilized vinyl acetate-ethylene or styrene-(meth)acrylic ester copolymers in the form of water-redispersible powders is improved by drying aqueous dispersions comprising protective-colloid-stabilized vinyl acetate-ethylene and/or styrene-(meth)acrylic ester copolymers, one or more water-soluble inorganic salts, and one or more desiccants. Where the water-soluble inorganic salts are selected from the group consisting of alkali metal sulfates and where the desiccants are selected from the group comprising polyvinyl alcohols, polyvinyl acetals, nonionic polyvinylpyrrolidones, nonionic poly(meth)acrylamides, polysaccharides and proteins.

A fluidizing composition in the form of a liquid or in the form of a powder including at least one superplasticizer chosen from polycarboxylate ethers, characterized in that it includes from 1 to 20 parts by weight of at least one aromatic hydrocarbon sulfonic acid or one of its salts chosen from alkali salts, alkaline-earth salts or one of their mixtures, for 100 parts by weight of the superplasticizer. A method for preparing such fluidizing composition, a dry mortar incorporating the fluidizing composition, as well as plasters prepared from the dry mortar are also described.

A free-flowing powder composition includes at least one substrate having pores and an external surface between said pores, said surface functionalized with at least one accelerator for a hydraulic setting composition, said accelerator being liquid, hygroscopic, or deliquescent, and wherein after 15 minutes of immersion of free-flowing powder composition in water at 20° C. at least 80% in weight of said accelerator is solubilized, said free-flowing powder composition being immersed in an amount of water sufficient so that the saturation concentration of said accelerator cannot be reached. There is also a method for preparing said free-flowing powder composition. The use of said free-flowing powder composition as an additive for mortar or concrete composition provides an accelerating effect, an anti-ageing effect and an anti-dusting effect. A dry mortar or concrete composition includes a hydraulic binder, said free-flowing powder composition and a granulate, wet mortar or concrete composition and hardened body obtained therefrom.

A mortar composition, in particular for preparing a viscoelastic body or structure, or for for acoustic damping of at least one of a ship, an offshore installation and a building, includes: 1-20 wt % of a hydraulic binder, 30-80 wt % of aggregates, 5-75 wt % of a polymer, and 0.5-40 wt % of a porous filler.