Building products

US6506248B1 · kind B1 · utility

Assignee

• James Hardie Research Pty Limited · AU

Inventors

• Steve Duselis · Parramatta, AU
• Peter Goodwin · Parramatta, AU
• Nigel Kirby · Hornsby, AU
• Basil Naji · Toongabbie, AU
• Anhthe Nguyen · Sydney, AU
• Brian P. Sloane · Parramatta, AU
• David Stitt · Chatswood, AU
• James Gleeson · Sydney, AU

Key dates

• Filing date: Jul 17, 2001
• Grant date: Jan 14, 2003
• Expiry date: Jul 17, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2111/00129
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A formulation for preparing a cementitious product comprising a cementitious material, a siliceous material, and a low bulk density material being substantially calcium silicate hydrate and including unreacted siliceous reactant. A method of forming a cementitious product comprises adding a cementitious material, a siliceous material and a low bulk density material to water to form a slurry, forming a green shaped article from the slurry and curing the article in an autoclave, wherein the low bulk density material is substantially calcium silicate hydrate and includes unreacted siliceous reactant.