LIGHTWEIGHT CEMENT BOARD
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United States of America Patent
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N/A
Issued Date -
Dec 13, 2012
app pub date -
Feb 16, 2011
filing date -
Feb 18, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A cement board has a density from 200 to 1000 kg/m3, the cement board produced from a foamed cement slurry including cement; water; from 0.01 to 5% of a water-reducing agent, a plasticizer or a superplasticizer, % by mass relative to the mass of cement; from 0.45 to 5%, of a foaming agent, % by mass relative to the mass of water; a water-soluble calcium salt; mineral particles from 0.1 to 300 μm in size; a ratio of foaming agent to calcium salt being from 0.3 to 0.8.
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