Ut-Battelle, Inc.

The University of Tennessee Research Foundation

Mbakisya Onyango

Diana Hun

Catherine H Mattus

Joseph Owino

Alex Brent Rollins

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&#x2033; 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 &#x3c;1.5&#x2033; 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.

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Chattanooga, TN, United States of America

Mbakisya Onyango