Method for improving the mechanical strength, particularly the strength “at the young ages” of cement matrices, and the cement matrices obtained thereby
AssigneeCoatex
InventorsPascal Gonnon, Yves Kensicher, Christian Jacquemet
Life of this patent
Estimating the term…
Abstract
Cements or hydraulic binders may be prepared by adding an aqueous suspension comprising a ground mineral filler and at least one grinding aid agent to a cement or hydraulic binder. The resulting cement or hydraulic binder has very appreciably improved mechanical properties, particularly the property of “strength at young ages.” The grinding aid agent may be a natural or synthetic homopolymer and/or copolymer.
Claims46
A method of preparing a cement matrix or hydraulic binder comprising:
- adding an aqueous suspension comprising a ground mineral filler and at least one grinding aid agent to a cement or hydraulic binder,
- wherein the grinding aid agent comprises a polymer prepared by polymerizing at least two ethylenically unsaturated monomers comprising at least one anionic monomer and at least one ethylenic monomer having at least two polymerizable double bonds.
A method of preparing a cement matrix or hydraulic binder comprising:
- adding an aqueous suspension comprising a ground mineral filler and at least one grinding aid agent to a cement or hydraulic binder,
- wherein the grinding aid agent comprises a homopolymer of at least one ethylenically unsaturated cationic monomer selected from the group consisting of quaternized or unquaternized methacrylamido propyl trimethyl ammonium chloride or sulfate or a corresponding acrylate or acrylamide quaternized or not,;
- quaternized or unquaternized trimethyl ammonium ethyl methacrylate chloride or sulfate or a corresponding acrylate or acrylamide;
- and dimethyldiallyl ammonium chloride.
A method of preparing a cement matrix or hydraulic binder comprising:
- adding an aqueous suspension comprising a ground mineral filler and at least one grinding aid agent to a cement or hydraulic binder,
- wherein the grinding aid agent comprises synthetic homopolymers or copolymers prepared by polycondensation, or by ring opening polymerization,
- wherein the polymers prepared by polycondensation or by ring opening polymerisation are selected from the group consisting of polylactates and water-soluble polyesters, polyamides or polylactones.
A method of preparing a cement matrix or hydraulic binder comprising:
- adding an aqueous suspension comprising a ground mineral filler and at least one grinding aid agent to a cement or hydraulic binder,
- wherein the grinding aid agent comprises a polymer prepared by polymerizing:
- a) the reaction product of a methoxy-polyethylene glycol having a molecular weight greater than 300 with an acrylic, methacrylic, vinyl or allyl isocyanate, and
- b) at least one anionic monomer.
A method of preparing a cement matrix or hydraulic binder comprising:
- adding an aqueous suspension comprising a ground mineral filler and at least one grinding aid agent to a cement or hydraulic binder,
- wherein the grinding aid agent consists essentially of a homopolymer of acrylic or methacrylic acid.
Dependencies are inferred from the claim text.