WATERPROOF SHEET FOR TUNNEL
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United States of America Patent
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N/A
Issued Date -
Jul 1, 2010
app pub date -
Jun 4, 2007
filing date -
Jun 7, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
, formed over a depth of from 5 to 30 μm from the surface of the waterproof sheet, and having a tensile breaking strength of 10 MPa or more and a mortar adhesion strength of 15 N/cm or more, and thus provides a waterproof sheet for a tunnel that forms no gap between the sheet and the concrete structure even when a prolonged period of time is elapsed from the installation, or the installed surface suffers large deterioration in evenness or levelness, ground subsidence or earthquake, and also does not cause problems including breakage and the like upon installation and after installation in the tunnel, thereby preventing smoothly water seeping from the earth or the ground from leaking into the tunnel.
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Cited Art Landscape
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