Process of electrochemically re-alkalizing reinforced concrete
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United States of America Patent
Stats
-
Sep 12, 1989
Grant Date -
N/A
app pub date -
Jan 11, 1988
filing date -
May 2, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process is disclosed for re-alkalizing carbonized reinforced concrete. An electric current is impressed between adjacent areas of concrete, one of which has become carbonized with consequent loss of pH, and the other of which is adequately alkaline in pH. The impressed voltage causes a migration of hydroxyl ions from the higher pH region to the lower pH region, to effect an increase in pH of the carbonized region to a satisfactory level. The region of high pH concrete may be either non-carbonized areas of the original concrete or a temporarily applied layer of an alkaline electrolyte.

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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
FOSROC INTERNATIONAL LIMITED | NECHELLS BIRMINGHAM B7 5JR |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Miller, John B | Oslo, NO | 19 | 182 |
Vennesland, Oystein | Trondheim, NO | 3 | 45 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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