Deterioration preventive for concrete or mortar and method for preventing deterioration of concrete or mortar
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United States of America Patent
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Dec 12, 2000
Grant Date -
N/A
app pub date -
Aug 10, 1998
filing date -
Feb 13, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a deterioration inhibitor for concrete or mortar which does not pollute water and which, in a small amount, can prevent the deterioration of concrete or mortar due to sulfur oxidizing bacteria for a long time, and also provides a method of inhibiting the deterioration of concrete or mortar which uses the deterioration inhibitor. A phthalocyanine compound is an effective component of the deterioration inhibitor for concrete or mortar. In the method of inhibiting the deterioration of concrete or mortar, the phthalocyanine compound is added to concrete or mortar.
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