Billy L Gravitt

US Patent:

48426490, Jun 27, 1989

Filed:

Oct 2, 1987

Appl. No.:

7/103755

Inventors:

Richard F. Heitzmann - Pearland TX
Billy B. Gravitt - Katy TX
James L. Sawyer - Friendswood TX

Assignee:

Pyrament, Inc. - Houston TX

International Classification:

C04B 2210

US Classification:

106 89

Abstract:

A blended hydraulic cement composition, curable at low temperatures, including temperatures below the freezing point of water, is composed of portland cement, slag, pozzolans including metakaolin, and admixtures including potassium carbonate and water reducing compositions. The cement is particularly useful in producing concrete compositions which achieve high strength in a brief period of time, and continue curing at ambient temperatures, and temperatures below the freezing point of water.