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公开(公告)号:US5634972A
公开(公告)日:1997-06-03
申请号:US596901
申请日:1996-03-13
申请人: John T. Pacanovsky , Lan Huang , Frank T. Gay , Samy M. Shendy
发明人: John T. Pacanovsky , Lan Huang , Frank T. Gay , Samy M. Shendy
CPC分类号: C04B24/06 , C04B28/02 , C04B40/0658 , C04B2103/12 , C04B2103/22 , C04B2111/00155 , Y02W30/94
摘要: A method of controlling the hydration of a cementitious composition comprising the steps of:i) providing a cementitious composition containing an amount of a neutralized salt of an alpha-monohydroxy carboxylic acid effective to retard the cementitious composition, said carboxylic acid containing two or more carboxylic acid groups, and subsequently,ii) adding an additional amount of said neutralized salt of an alpha monohydroxy carboxylic acid or a second neutralized salt of an alpha monohydroxy carboxylic acid in an amount sufficient to activate hydration of the retarded cementitious composition, said cementitious composition comprising hydraulic binder and water.
摘要翻译: 一种控制水泥组合物水化的方法,包括以下步骤:i)提供含有一定量的中和的α-单羟基羧酸盐的水泥组合物,其有效地延缓胶结组合物,所述羧酸含有两个或更多个羧酸 酸基团,随后,ii)加入额外量的α单羟基羧酸的所述中和盐或α单羟基羧酸的第二中和盐,其量足以活化延迟水泥质组合物的水合,所述胶结组合物包含 水力粘合剂和水。