James Hardie Technology Limited

Basf Corporation

Lijun Mao

Caidian Luo

Marko Suput

Robert J Petcavich

Huagang Zhang

Weiling Peng

Thinh Pham

Yongjun Chen

John Andrew Joecken

Thomas Patrick Mueller

Xiangyuan Liu

Li Yang

Xiaoming Yang

Ryan Matthew Sullivan

Jongmin Keum

Paul Owen Kramer

Farshad J Motamedi

Yan Li

A fiber cement material formulation comprising a cementitious binder, a siliceous material, fiber, alumina trihydrate and a bifunctional low density additive wherein the bifunctional low density additive comprises any one or more of diatomaceous earth, recycled autoclave fiber cement dust or cellulose dust. The fiber cement material formulation optionally further comprises a secondary low density additive which may be perlite. In some embodiments, a fiber cement article manufactured from the fiber cement material formulation comprises a density of approximately 1.1 g/cmor below.

Fiber cement material formulations and compositions thereof

Described herein is a cementitious article and a method of making using a water-based manufacturing system that incorporates a closed-loop or partially closed loop water recycling system and an alkali removal process. The system, as such is environmentally friendly, saves resources, such as water and other raw materials, and reduces waste disposal. The system further provides for a cementitious article having a low alkali content. Articles prepared by one or more processes described herein have characteristics that include a low apparent density, high strength and high freeze-thaw performance as compared with an article of the same general formulation but made from a comparative manufacturing system that does not include an alkali removal process. Articles described herein are suitable for use as building products, such as siding, the underlayment panel, board, trim, fascia, roofing, decking, and fence.

Environmentally-friendly cementitious articles, formulations, methods of making and uses

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Rancho Cucamonga, CA, United States of America

Lijun Mao