公开(公告)号：US5948157A

公开(公告)日：1999-09-07

申请号：US763088

申请日：1996-12-10

申请人： Colin J. McKenney ,  Mikhail Pildysh ,  Donald J. Shyluk

发明人： Colin J. McKenney ,  Mikhail Pildysh ,  Donald J. Shyluk

IPC分类号： C04B7/00 ,  C04B18/08 ,  C04B18/14 ,  C04B20/10 ,  C04B24/10 ,  C04B28/02 ,  C04B40/06 ,  C04B14/04 ,  C04B14/38

CPC分类号： C04B20/1037 ,  C04B40/0633 ,  C04B2103/0052 ,  C04B2103/465

摘要： The invention is directed at an additive for incorporation into a cementitious compound comprising Portland cement and water prior to the setting of the compound. The additive is comprised of a surface treated additive wherein the surfaces of the additive are treated with a substance which has a transient hydrophobic effect on the additive, which effect temporarily renders the additive more hydrophobic for a time period following the incorporation of the additive into the compound such that the water comprising the compound is less attracted to the additive during the placement of the compound and is thus available to provide workability to the compound, and such that the additive regains its natural properties following placement of the compound in order to permit the additive to participate with the compound during the curing of the compound. The invention is also directed at a process for preparing the additive and a process for preparing a cementitious compound comprised of the additive.

摘要翻译： 本发明涉及在化合物凝固之前掺入含硅酸盐水泥和水的水泥化合物的添加剂。 添加剂由表面处理的添加剂组成，其中添加剂的表面用对添加剂具有暂时的疏水作用的物质处理，这种作用暂时使添加剂在将添加剂加入到 化合物，使得在化合物放置期间，包含化合物的水较少地吸附到添加剂上，因此可用于向化合物提供可加工性，并且使得添加剂在放置化合物之后恢复其自然特性，以便允许 在化合物固化期间与化合物一起参与的添加剂。 本发明还涉及一种制备该添加剂的方法和一种由该添加剂组成的水泥质化合物的制备方法。