Road structure – process – or apparatus – Process – In situ treatment of earth or roadway
Patent
1984-09-05
1986-12-23
Suchfield, George A.
Road structure, process, or apparatus
Process
In situ treatment of earth or roadway
405264, 405267, 528 55, E01C 730, C08G 1826
Patent
active
046309632
ABSTRACT:
A composition and method for use in the repair of a roadway are described. A lower molecular weight hydroxyl terminated polyether polyol is reacted with an organic polyisocyanate in the presence of solvents having a specific gravity in excess of 1, and catalyzed by organic mercury and organic lead catalysts in amounts sufficient to cause the composition to gel in about thirty seconds. The reaction products are pumped or poured over an aggregate and allowed to percolate therethrough to form a flush roadway repair.
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