Method for producing a cementitious powder having latent hydraulic binding properties and for preparing a hydraulic binder therefrom

摘要

673,866. Slag cement. TRIEF, V. Aug. 26, 1949 [Sept. 3, 1948], No. 22288/49. Class 22. A cement having latent hydraulic properties is produced from 'granulated blast furnace slag by wet grinding in the known manner, the paste produced being dried before it is altered and the fine powder so produced and which has the latent hydraulic properties is maintained in such condition, and is capable of being activated by the subsequent addition of the activator. Portland cement is specified as the activator. Part of the water may be removed initially, by decanting, filtering or centrifugal means, the remainder by heat, vacuum, infra-red ray or radio waves, the temperature remaining below 50‹ C.