BASE SEAL FOR A DUMP, IN PARTICULAR A RESIDUAL SALT DUMP
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United States of America Patent
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Issued Date -
Jul 18, 2013
app pub date -
May 17, 2011
filing date -
Jul 12, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a base seal of a dump, in particular a residual salt dump, said seal comprising two layers disposed on top of one another. The upper layer has a mixture of gravel, sand and bentonite or powered clay with a permeability coefficient of k≦10−9 m/s and the lower layer has a mixture of sand and bentonite or powered clay with a permeability coefficient of k≦5*10−10 m/s.
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