Rapid setting material for improved processing and performance of carbonating metal silicate cement

US10301217B2 · kind B2 · utility

Assignee

• BORAL IP HOLDINGS (AUSTRALIA) PTY LIMITED · AU

Inventors

• Russell L. Hill · San Antonio, US
• Amitabha Kumar · Shadnagar, IN

Key dates

• Filing date: Dec 23, 2014
• Grant date: May 28, 2019
• Expiry date: Feb 19, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P40/18
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Cementitious compositions and methods for producing the cementitious compositions are described herein. The methods can include mixing a compound of the general formula MaSibXcOd, MaSibXcOd(OH)e, MaSibXc(OH)e, or MaSibXc(OH)e.(H2O)f, wherein M comprises a metal that can react with carbon dioxide in a carbonation reaction to form a carbonate, Si forms an oxide during the carbonation reaction, X is an element other than M or Si, a, b, d, e, and f are greater than zero, and c is zero or greater, with a rapid setting hydraulic cement to produce a cementitious mixture. The methods can further include hydrating the cementitious mixture and carbonating the cementitious mixture. Carbonating the cementitious mixture can occur simultaneously with hydrating the cementitious mixture or subsequent to hydrating the cementitious mixture. In some embodiments, the non-hydraulic cement can comprise wollastonite. The hydraulic cement can be in an amount of from 5 wt % to 80 wt % of the cementitious composition.