Method for the coloration of concrete and other mixtures
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United States of America Patent
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Jul 31, 2001
Grant Date -
N/A
app pub date -
Mar 26, 1999
filing date -
Aug 15, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention concerns a method for the colouring of concrete, and especially in the colours blue or green. According to the method, copper powder from grinding work, for example, may be added before the concrete hardens. This colours the concrete mix due to its reaction with a substance added to the concrete.
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