Lightweight concrete compositions
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United States of America Patent
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-
May 1, 2012
Grant Date -
Jan 6, 2011
app pub date -
Sep 14, 2010
filing date -
Mar 22, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A lightweight ready-mix concrete composition that contains 8-20 volume percent cement, 11-50 volume percent sand, 10-31 volume percent prepuff particles, 9-40 volume percent coarse aggregate, and 10-22 volume percent water, where the sum of components used does not exceed 100 volume percent;. The prepuff particles have an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.02 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3. The slump value of the composition measured according to ASTM C 143 is from 2 to 8 inches. After the lightweight ready-mix concrete composition is set for 28 days, it has a compressive strength of at least 1400 psi as tested according to ASTM C39.
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Cited Art Landscape
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