Long-workability calcium aluminate cement with hardening promoted by a temperature increase, and related use

US11208353B2 · kind B2 · utility

Assignee

• KERNEOS · FR

Inventors

• Bruno Espinosa · Genas, FR
• Mark Winslow Fitzgerald · Humble, US
• Charles Walter Alt · Chesapeake, US
• Philippe Thouilleux · L'Isle-d'Abeau, FR
• Ratana Soth · Val-de-Reuil, FR
• Michael Lievin · Le Pont-de-Beauvoisin, FR

Key dates

• Filing date: May 11, 2020
• Grant date: Dec 28, 2021
• Expiry date: May 11, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/91
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Disclosed is a calcium aluminate cement, including a calcium aluminate with a first crystallised mineralogical phase of calcium dialuminate CA2 including one calcium oxide CaO for two aluminium oxides Al2O3 and/or a second crystallised mineralogical phase of dicalcium alumina silicate C2AS including two calcium oxides CaO for one aluminium oxide Al2O3 and one silicon dioxide SiO2. The mass fraction of all of the first and second mineralogical phases in the calcium aluminate is greater than or equal to 80%.