Chemistry: electrical and wave energy – Processes and products – Electrophoresis or electro-osmosis processes and electrolyte...
Reexamination Certificate
2005-07-19
2005-07-19
Phasge, Arun S. (Department: 1753)
Chemistry: electrical and wave energy
Processes and products
Electrophoresis or electro-osmosis processes and electrolyte...
C204S600000, C204S648000
Reexamination Certificate
active
06919005
ABSTRACT:
A configuration and treatment for degrading porous material, e.g., concrete, brick, or other masonry material, via rapid, efficient electro-osmosis. One application carries dehydration to an extent that it weakens a structure for demolition by significantly dehydrating its structural material. A durable, dimensionally stable anode is affixed to the structure and attached to a wire from a DC power supply. The anode is composed of a valve metal substrate with a semiconductive coating of a precious metal, cement or ceramic. Connection to a cathode through the power supply completes the circuit. A DC voltage is applied to the concrete structure by cycling a pro-specified pulse train from the power supply. One pulse train consists of an initial positive pulse followed by a shorter duration negative pulse and ends with a short off period before the pulse train is reinitiated. The cycle continues until the porous material has been determined to be sufficiently degraded.
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Chitty Philip
Flanders Stephen N.
Hock Vincent F.
McInerney Michael K.
Baugher Jr. Earl H.
Phasge Arun S,.
The United States of America as represented by the Secretary of
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