James Hardie Technology Limited

Thomas Patrick Mueller

Xiangyuan Liu

Joe Zhou Peng

Jose Bernal

Weiling Peng

Huagang Zhang

Thinh Pham

Yongjun Chen

Amol Joshi

Jongmin Keum

Lijun Mao

Yan Li

Sarah Grundy

Kelvin Lau

Farshad J Motamedi

Steven Terzian

Textured fiber cement cladding panel

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

Disclosed herein are low density fiber cement articles, such as fiber cement building panels and sheets, comprised of multiple overlaying fiber cement substrate layers having small and uniform entrained air pockets and low density fillers distributed throughout. The combination of entrained air pockets and low density fillers provide a low density fiber cement matrix with physical and mechanical properties similar to comparable low density fiber cement matrix without entrained air pockets.

Aerated fiber cement building products and methods of making the same

Disclosed herein are low density fiber cement articles, such as fiber cement building panels and sheets, comprised of multiple overlaying fiber cement substrate layers having small and uniform entrained air pockets distributed throughout. Also disclosed herein are air entrainment systems and methods for manufacturing aerated low density fiber cement panels or sheets with consistent air void content and uniform air void distribution. Also disclosed herein are air entrainment technologies adapted to work in conjunction with the Hatschek process to produce aerated fiber cement articles having controlled air void content and distribution.

Growing community of inventors

Fontana, CA, United States of America

Thomas Patrick Mueller