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US 2003/0154884 A1Published application
Roadbed stabilization
AssigneeClearwater, Inc.
InventorMark E. Stanley
Life of this patent
Estimating the term…
Abstract
Roadbed material is stabilized by the addition of a small amount of potassium formate, preferably together with a water-soluble polymer which is preferably a cationic polymer.
Claims15
Method of stabilizing roadbed material containing at least 2% by weight clay comprising adding to said roadbed material potassium formate in an amount effective to enhance stability thereof.
A composition useful as a roadbed material comprising (a) at least one of sand, gravel, crushed concrete and crushed asphalt, (b) at least 2% clay by weight, and (c) potassium formate in an amount effective to enhance the stability of said roadbed material.
Dependencies are inferred from the claim text.