Directed cracking in concrete panel manufacture
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United States of America Patent
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-
Nov 22, 1983
Grant Date -
N/A
app pub date -
Mar 2, 1981
filing date -
Mar 2, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of manufacture in which the formation of unsightly stress cracks in sandwich-like panels of prestressed concrete are prevented by the formation of a 'contraction joint' at selected locations in the panel's outer layer of concrete during its manufacture.
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