Patents Represented by Attorney Craig K. Olson

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  • Avoiding cracking and curling in concrete flooring upon which water-based adhesives are employed
    Patent number: 6898917
    Abstract: The invention provides a method for making a concrete floor slab using sub-grade waterproofing in a manner that favors the use of water-based adhesives for affixing floor covering materials. The method comprises casting a hydratable cementitious composition onto a flooring membrane, the composition having a shrinkage reduction admixture and a water:cementitious binder ratio sufficiently low that substantially all of the water moisture is retained in the hydration reaction, and achieving a fully adhered bond with the flooring membrane.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: May 31, 2005
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Timothy A. Durning, Lawrence R. Roberts, Neal S. Berke