Cement based laminated armor panels

US8062741B2 · kind B2 · utility

Assignee

• U.S. Gypsum Company · US

Inventors

• Timothy D. Tonyan · Wheaton, US
• William A. Frank · Lake Villa, US
• Ashish Dubey · Grayslake, US
• Cesar Chan · Libertyville, US
• Bartley P. Durst · Vicksburg, US
• Pamela G. Kinnebrew · Vicksburg, US
• Toney K. Cummins · Vicksburg, US
• Nicholas Boone · Vicksburg, US
• William F. Heard · Clinton, US
• Michael J. Roth · Fenton, US
• James L. Davis · Marlow, US

Key dates

• Filing date: Feb 27, 2009
• Grant date: Nov 22, 2011
• Expiry date: Apr 30, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249932
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A cementitious panel with ballistic and blast resistant properties having a core layer of ultra-high compressive strength composite and at least one skin layer. The panels can also be used in walls, ceiling and flooring panels which require high compressive strength for resistance to earthquakes and surfaces resistant to surface abuse such as in prison and other institutions. The panel core layer has a continuous cementitious phase resulting from the curing of an aqueous mixture, in the absence of silica flour, of inorganic cement binder, inorganic mineral filler having a particle size of about 150-450 microns, a pozzolanic mineral filler, polycarboxylate based superplasticizer, alkanolamine and acid or alkali metal acid salt; and water. The mixture may be uniformly reinforced with fiber added before curing. The cementitious core layer is then reinforced with the skin, such as fiber reinforced polymer, attached to at least one panel surface.