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:
Jul. 22, 2014
Filed:
May. 26, 2011
Neal Steven Berke, Chelmsford, MA (US);
Glenn Eugene Schaefer, Portage, MI (US);
Jerry Elliot Rademan, Jacksonville, FL (US);
Ronald Wardle, Findlay, OH (US);
Mark Shand, Findlay, OH (US);
Neal Steven Berke, Chelmsford, MA (US);
Glenn Eugene Schaefer, Portage, MI (US);
Jerry Elliot Rademan, Jacksonville, FL (US);
Ronald Wardle, Findlay, OH (US);
Mark Shand, Findlay, OH (US);
Premier Magnesia, LLC, West Conshohocken, PA (US);
Abstract
Portland Cement-based concretes and mortars exhibit significant reduction in shrinkage cracking when combined with Magnesium Oxide (MgO), Shrinkage Reduction Admixtures (SRA) and Super Absorbent Polymers (SAP). However, MgO is a solid that reacts with water, SRA is a liquid, and SAP if not added properly could pull water out of the system and thus increase shrinkage. Unique admixture blends used as supplementary cementing materials that do not significantly affect concrete or cement strength properties of Portland cement itself address such issues. Proper ratios of MgO, SRA and/or SAP perform better against crack reduction when compared to commonly used Expansive Cements (EC).