Aerated fiber cement building products and methods of making the same
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United States of America Patent
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Aug 15, 2017
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Nov 26, 2014
filing date -
Apr 27, 2011
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Abstract
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.
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