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:
Nov. 17, 2020
Filed:
Apr. 12, 2019
Ut-battelle, Llc, Oak Ridge, TN (US);
University of Tennessee AT Chattanooga, Chattanooga, TN (US);
Diana E. Hun, Lenoir City, TN (US);
Catherine H. Mattus, Oak Ridge, TN (US);
Mbakisya Onyango, Chattanooga, TN (US);
Joseph Owino, Hixson, TN (US);
Alex Brent Rollins, Dalton, GA (US);
UT-BATTELLE, LLC, Oak Ridge, TN (US);
UNIVERSITY OF TENNESSEE RESEARCH FOUNDATION, Knoxville, TN (US);
Abstract
A lightweight concrete composition includes the concrete components, per ydof concrete: Type III Portland cement (lb/yd) 200-900; metakaolin (lb/yd) 100-520; calcium sulfoaluminate cement (CSA) (lb/yd) 40-840; 3/8″ lightweight expanded slate aggregate (lb/yd) 70-550; lightweight fine expanded slate aggregate (lb/yd) 300-550; expanded glass fine aggregate (0.5-1 mm) 35-90 (lb/yd); expanded glass fine aggregate (1-2 mm) 35-90 (lb/yd); water (lb/yd) 300-350; CSA cement set retarder 0.015 to 0.06 oz per lb of CSA cement; high-range water-reducing admixture 120-1000 (fl. oz/yd); hydration controlling admixture 0-80 (fl. oz/yd); reinforcing non-metallic lightweight fibers <1.5″ in length 0-8 (lb/yd); wherein the concrete has a flexural strength of at least 600 psi at 12 hours, a density of 95 to 110 lb/ft, and a compressive strength at 28 days of at least 7,000 psi. A lightweight concrete wythe and method of making a lightweight concrete wythe are also disclosed.