Hydraulic binder
AssigneesWopfinger Stein- und Kalkwerke Schmid & Co., Dipl.Ing. Denes Novak
InventorDenes Novak
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Abstract
A hydraulic binder containing a glassy bulky slag milled to a fineness above 5000 cm2. Blaine and wherein the latently hydraulic blast furnace slag has a glassiness above 93%, contains 34 to 40% SiO2, 34 to 37% CaO and above 9% and previously below 13% Al2O3. The (CaO+MgO)/(Al2O3+SiO2) ratio ranges from 0.88 to 0.98. Preferably the binder contains 0.5 to 5% porcelain cement clinker or porcelain cement. The above conditions can be met by mixing several slags.
Claims20
A hydraulic binder comprised of a latently hydraulic bulky blast furnace slag, finely ground to in excess of 5,000 cm2/g Blaine, containing a sulfate promoter and activating additives, and wherein the latently hydraulic bulky blast furnace slag has substantially the following analysis:
- Glassiness:
- >93%,
- SiO2:
- 34 to 40% by weight,
- CaO:
- 34 to 37% by weight,
- Al2O3:
- >9% by weight, and
- (CaO+MgO)/(Al2O3+SiO2):
- 0.88-0.98.
Dependencies are inferred from the claim text.