发明授权
- 专利标题: Processing additives for hydraulic cements
- 专利标题(中): 液压水泥加工助剂
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申请号: US09524803申请日: 1999-09-30
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公开(公告)号: US06290772B1公开(公告)日: 2001-09-18
- 发明人: Josephine Ho-wah Cheung , David Francis Myers
- 申请人: Josephine Ho-wah Cheung , David Francis Myers
- 主分类号: C04B2412
- IPC分类号: C04B2412
摘要:
This invention relates to enhancing the compressive strength of cements after 1, 3, 7 and 28 days following hydration and to improving porosity and finished surfaces of the hardened cements and concretes made therefrom. The improved cements are prepared using certain hydroxylamine additives in amounts of up to 0.1% which preferably are added during grinding of the cement in which case the amines further act as grinding aids.