Process to inert non-swelling clays

US10011531B2 · kind B2 · utility

Assignee

• LAFARGE · FR

Inventors

• Emmanuel Villard · Saint-Christo-en-Jarez, FR
• Olivier Watt · Bourgoin-Jallieu, FR
• Horacio Naranjo · Jardin, FR
• David Rinaldi · Belton, US
• Alain Jacquet · Villefranche-sur-Saône, FR

Key dates

• Filing date: Mar 1, 2011
• Grant date: Jul 3, 2018
• Expiry date: Jun 25, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2103/32
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process to inert non-swelling clays in at least one mineral component intended for the preparation of a hydraulic composition, including the addition, to the hydraulic composition, to the mineral component or to one of the other constituents of the hydraulic composition, of an organic molecule having a cationic charge density strictly less than 0.5 meq/g and including at least two atoms each being capable of forming at least one hydrogen bond.