| 摘要 |
1312079 Slag brick WOLFFJOHANN ETAB 22 June 1970 [24 June 1969] 30178/70 Heading C1H A mixture comprising common granulated blast furnace slag, finely powdered blast furnace slag and finely powdered active silica-containing material, e.g. quartz, is pressed to brick shape and steam cured at above 140‹ C. Small quantities of hydraulic setting activators e.g. alkali metal hydroxides or carbonates, Ca(OH) 2 , alkali or alkaline earth-metal sulphates or chlorides may be included. |
