Cementitious formulations and products

US8147610B2 · kind B2 · utility

Assignee

• James Hardie Technology Limited · IE

Inventors

• Xiangdong Feng · Qingdao, CN
• Meiling Gong · Upland, US
• Chinmay Avinash Gowardhan · Riverside, US
• Chongjun Jiang · Goleta, US
• Michael John Julius · Rancho Cucamonga, US
• Amitabha Kumar · Shadnagar, IN
• Shannon Marie Labernik · Rancho Cucamonga, US
• Xiangyuan Liu · Rancho Cucamonga, US
• Liyan Ma · King of Prussia, US
• Basil Naji · Toongabbie, AU
• Kalynne H. Paradis · Rancho Cucamonga, US
• David John Sharman · Rancho Cucamonga, US

Key dates

• Filing date: Oct 2, 2008
• Grant date: Apr 3, 2012
• Expiry date: Jul 7, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B28/02
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Cementitious formulations and their products with enhanced reactivity are provided. Formulations in certain embodiments may include at least one calcium source, a reactant and a filler in a hydrated environment, wherein the reactant, in one form, is crystalline silica that has been modified for reactivity. Enhancement of a reactant may include one or more modifications to its content, grind and/or the cement to silica ratio, as well as addition of one or more additives in the formulation, additives in the form of at least one alumina source, defoamer, catalyst and/or a clay.