TIMOTHY A DURNING
Engineering in Arlington, MA
License number
Massachusetts 32552
Issued Date
Jan 24, 1986
Expiration Date
Jun 30, 2018
Type
Structural Engineer
Address
Address
Arlington, MA 02476
Professional information
Avoiding Cracking And Curling In Concrete Flooring Upon Which Water-Based Adhesives Are Employed
US Patent:
2004003, Feb 19, 2004
Filed:
Aug 15, 2002
Appl. No.:
10/219107
Inventors:
Timothy Durning - Arlington MA, US
Lawrence Roberts - Acton MA, US
Neal Berke - Chelmsford MA, US
Lawrence Roberts - Acton MA, US
Neal Berke - Chelmsford MA, US
International Classification:
E04B005/00
US Classification:
052/309170, 052/411000, 052/742140
Abstract:
The invention provides a method for making a concrete floor slab using subgrade 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.
Avoiding Cracking And Curling In Concrete Flooring Upon Which Water-Based Adhesives Are Employed
US Patent:
7219479, May 22, 2007
Filed:
Mar 31, 2005
Appl. No.:
11/094856
Inventors:
Timothy A. Durning - Arlington MA, US
Lawrence R. Roberts - Acton MA, US
Neal S. Berke - N. Chelmsford MA, US
Lawrence R. Roberts - Acton MA, US
Neal S. Berke - N. Chelmsford MA, US
Assignee:
W. R. Grace & Co.-Conn. - Columbia MD
International Classification:
E04B 5/32, C04B 24/00
US Classification:
527461, 5274214, 52409, 52411, 106802, 106819, 428489
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.