Mixed gypsumless portland cement

Details Mixed gypsumless portland cement Mixed gypsumless portland cement

1990-05-11

1991-12-31

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106714, 106727, 106736, 106738, C04B 702, C04B 714

Patent

active

050768514

ABSTRACT:
A mixed gypsumless Portland cement of high initial and long-lasting strengths which contains 60-96.7 weight percent gypsumless Portland cement clinker with the specific surface of 350-550 m.sup.2 /kg and 3-40 weight percent of ground latently hydraulic matter, such as granulated blast-furnace slag, light ash, and the like, which two components have been ground in the presence of 0.01-0.1 weight percent of a liquid milling admixture, advantageously with a synthetic surface active matter with wetting properties, and containing 0-20 weight percent of fine amorphous SiO.sub.2 and/or 0.1-3 weight percent sulphonated polyelectrolyte or ligninsulphonate and 0.5-6 weight percent alkaline carbonate, hydrogen carbonate, or alkaline hydroxide.

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