发明申请
- 专利标题: SET ACCELERATOR FOR GYPSUM HYDRATION
- 专利标题(中): 用于GYPSUM HYDRATION的加速器
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申请号: US12976190申请日: 2010-12-22
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公开(公告)号: US20120160133A1公开(公告)日: 2012-06-28
- 发明人: Srinivas Veeramasuneni , Qiang Yu
- 申请人: Srinivas Veeramasuneni , Qiang Yu
- 主分类号: C04B11/00
- IPC分类号: C04B11/00
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.
公开/授权文献
- US08226766B2 Set accelerator for gypsum hydration 公开/授权日:2012-07-24