发明名称 |
Set accelerator for gypsum hydration |
摘要 |
In a first embodiment of the invention, aged brushite is combined with calcium sulfate hemihydrate and water to make a gypsum slurry. Aged brushite slurry behaves similarly to calcium sulfate dihydrate to act as a seed crystal and rapidly initiate crystallization. The brushite slurry does not require the addition of a coating to maintain its activity over time compared to calcium sulfate dihydrate set accelerators. A gypsum-based product made using brushite slurry as the set accelerator is a second embodiment. The product has the brushite molecules integrated as part of the calcium sulfate dihydrate matrix and is distributed throughout the matrix. |
申请公布号 |
US8226766(B2) |
申请公布日期 |
2012.07.24 |
申请号 |
US20100976190 |
申请日期 |
2010.12.22 |
申请人 |
VEERAMASUNENI SRINIVAS;YU QIANG;UNITED STATES GYPSUM COMPANY |
发明人 |
VEERAMASUNENI SRINIVAS;YU QIANG |
分类号 |
C04B11/28;C04B11/00;C04B28/14 |
主分类号 |
C04B11/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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