The present invention provides compositions for use as stable additive concentrates, such as aqueous solutions or powders, in cement admixtures comprising i) one or more nonionic or substantially nonionic vinyl or acrylic brush polymers having pendant or side chain polyether groups and having a weight average molecular weight of from 140,000 to 50,000,000, ii) one or more aromatic cofactors containing one or more phenolic groups or, in combination, one or more aromatic groups with at least one sulfur acid group, preferably, a branched aromatic cofactor; and iii) one or more polycarboxylate ether copolymer water reducers containing carboxylic acid or salt groups and having polyether side chains and a weight average molecular weight of from 5,000 to 100,000.

A composition of matter, including a phlogopite powder or muscovite powder, clinoptilolite or mordenite, and kaolinite. The composition of matter is prepared as follows: 1) mixing the phlogopite powder or muscovite powder, the clinoptilolite or mordenite, and the kaolinite in a weight ratio of 50-70:0-30:0-50; adding a solution including isopropanol and n-butanol to a mixture of the phlogopite powder or muscovite powder, the clinoptilolite or mordenite, and the kaolinite, thereby yielding a mixed solution; 2) adding a silane coupling agent to the mixed solution, and continuously magnetically stirring the mixed solution for 30 min; adding distilled water to the mixed solution, and continuously magnetically stirring for 30 min; and adding methyl silicone oil to the mixed solution, and magnetically stirring for an hour, thereby yielding a slurry; and 3) drying the slurry at a temperature of 150-200 C.

A process of preparing a concrete mixture includes the following steps: (a) providing a nano-sized non-sand silica and water; (b) mixing the non-sand silica with the water to form a silica-water mixture; (c) mixing an acid into the silica-water mixture to form a treated water; (d) mixing Portland cement and the treated water for a time sufficient to wet the Portland cement with the treated water to form a Portland/treated-water mixture; (e) mixing aggregate and the Portland-treated-water mixture to form an uncured concrete; and (f) allowing the uncured concrete to cure to form a cured concrete.

A method of finishing an interior wall includes the steps of preparing a substrate of building panels including gypsum, cement or combinations thereof, the substrate having a surface, followed by applying a coating to the substrate, the coating having 1-30% by weight of a latex emulsion binder, 30-80% by weight calcium sulfate hemihydrate, up to about 8% by weight of a set inhibiting agent and 20-60% by weight water.

A hydraulic composition comprising an AE agent, water-soluble cellulose ether, defoamer, cement, water, and aggregate is provided. The AE agent contains a fatty acid-based surfactant consisting of a fatty acid, alkali metal salt, lower alkylamine salt or lower alkanolamine salt thereof and a nonionic surfactant consisting of a polyoxyethylene phenyl ether. The hydraulic composition has frost damage resistance and experiences little bleeding.

A process of preparing a concrete mixture includes the following steps: (a) providing a nano-sized non-sand silica and water; (b) mixing the non-sand silica with the water to form a silica-water mixture; (c) mixing an acid into the silica-water mixture to form a treated water; (d) mixing Portland cement and the treated water for a time sufficient to wet the Portland cement with the treated water to form a Portland/treated-water mixture; (e) mixing aggregate and the Portland-treated-water mixture to form an uncured concrete; and (f) allowing the uncured concrete to cure to form a cured concrete.

Methods for achieving thickening time in cement compositions that would otherwise be unable to achieve at least 70 Bc in the absence of the thickening time modifiers described herein.

Methods for achieving thickening time in cement compositions that would otherwise be unable to achieve at least 70 Bc in the absence of the thickening time modifiers described herein.

The present invention relates to a composition comprising () at least one inorganic binder and () at least one water-soluble copolymer based on (a) 0.1 to 20 wt % of at least one monomer of the formula (I) and (b) 25 to 99.9 wt % of at least one hydrophilic monomer (b) which is different from monomer (a), where the at least one copolymer has a molar mass average M of 1 500 000 to 30 000 000 g/mol. Furthermore, a process for producing this composition is disclosed. A further aspect of the present invention is the use of the copolymer of component () as rheological additive in a composition of the invention.

A hydraulic composition comprising an AE agent, water-soluble cellulose ether, defoamer, cement, water, and aggregate is provided. The AE agent contains a fatty acid-based surfactant consisting of a fatty acid, alkali metal salt, lower alkylamine salt or lower alkanolamine salt thereof and a nonionic surfactant consisting of a polyoxyethylene phenyl ether. The hydraulic composition has frost damage resistance and experiences little bleeding.