The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 2011
Filed:
Jun. 14, 2005
Lynn E. Brower, Solon, OH (US);
Thomas M. Vickers, Jr., Concord Township, OH (US);
Patrick Miller, North Lawrence, OH (US);
Bruce J. Christensen, Shanghai, CN;
Lynn E. Brower, Solon, OH (US);
Thomas M. Vickers, Jr., Concord Township, OH (US);
Patrick Miller, North Lawrence, OH (US);
Bruce J. Christensen, Shanghai, CN;
Construction Research & Technology GmbH, Trostberg, DE;
Abstract
An improved freeze-thaw durability dry cast cementitious composition is provided that uses very small (0.1 μm to 100 μm average diameter) polymeric microspheres that are blended directly into the mixture and optionally gas-generating additives. The polymeric microspheres provide void spaces in the material matrix that act to increase freeze-thaw durability of the material. In this dry cast cementitious composition, polymeric microspheres act as pre-formed voids.