Concrete repair process

Details Concrete repair process Concrete repair process

2007-07-26

2011-10-04

Cleveland, Michael (Department: 1712)

Coating processes

Restoring or repairing

C404S047000, C404S064000, C404S066000, C404S074000, C428S040300, C428S352000, C428S489000

Reexamination Certificate

active

08029854

ABSTRACT:
The present invention provides a process for repairing concrete involving filling one of a void, gap or seam in the concrete with a polyurethane sealant containing a silane terminated prepolymer (“STP”), and a catalyst, optionally, one or more of plasticizers, fillers, pigments, drying agents, light stabilizers, antioxidants. thixotropic agents and bonding agents and applying an isocyanate-terminated prepolymer containing polyurethane or polyurea coating to the silane terminated prepolymer polyurethane sealant.

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