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US 4,407,677 AGranted
Concrete masonry units incorporating cement kiln dust
AssigneeMartin Marietta Corporation
InventorMilton H. Wills, Jr.
Life of this patent
Estimating the term…
Abstract
A composition for the preparation of concrete block, comprising aggregate, cement, and cement kiln dust.
Claims7
A composition for the manufacture of concrete block, comprising aggregate, cement, and cement kiln dust, wherein the aggregate is present in a proportion of between about 8 to about 12 parts to 1 part of a mixture of cement and cement kiln dust.
A concrete block comprising aggregate, cement, and cement kiln dust.
Dependencies are inferred from the claim text.