Patent 8729160 was granted and assigned to Lafarge on May, 2014 by the United States Patent and Trademark Office.
A method includes adding at least one copolymer or a salt thereof acting as a plasticizer, blocking agent, or both a plasticizer and a blocking agent, to a calcium sulphate-based hydraulic binder. The copolymer includes an acrylic acid or a poly(oxy)alkylene copolymer.