Method of forming a foundation with liquid tight joints
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United States of America Patent
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-
Feb 7, 1984
Issued Date -
N/A
app pub date -
Aug 26, 1981
filing date -
Sep 12, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of constructing an in-ground liquid barrier in separate sections with liquid tight joints between the sections. A barrier area is excavated and the sections formed therein, preferrably by initially filling the excavation with a liquid sealing slurry and sequentially displacing portions of the slurry with a liquid impermeable barrier material to form barrier sections which are mutually abutting along leaky interfaces. A bore is drilled between adjacent sections in a direction generally transverse to the direction of leakage, and filled with a liquid sealing material to seal the joint. The sealing material preferrably comprises a dry, hydro-expandable bentonite composition which expands to form a slurry sealant by permitting liquid to seep between the barrier sections into the bore and contact the bentonite therein.
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