Electrically conductive concrete and controlled low strength materials having spent carbon sorbent
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United States of America Patent
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Aug 25, 2009
Grant Date -
Oct 18, 2007
app pub date -
Apr 12, 2006
filing date -
Apr 12, 2006
priority date (Note) -
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Abstract
Compositions are provided for increasing the electrical conductivity of concrete or controlled low-strength materials (flowable fill). One composition sets to produce a concrete and includes portland cement, water, aggregate, and particulate matter including a sorbent and a contaminant absorbed, adsorbed or entrapped by the sorbent. The sorbent may be activated carbon, and the contaminant may be mercury or a compound containing mercury. Another composition is a self-compacting, cementitious flowable fill composition that includes portland cement, water, and particulate matter including a sorbent and a contaminant absorbed, adsorbed or entrapped by the sorbent. The sorbent may activated carbon, and the contaminant may be mercury or a compound containing mercury. The compositions may also include carbon fibers.
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