Crimped thermoplastic fibers for reinforcing concrete
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United States of America Patent
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Nov 16, 1999
Grant Date -
N/A
app pub date -
Oct 8, 1997
filing date -
Oct 8, 1997
priority date (Note) -
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Abstract
A crimped thermoplastic fiber for use in reinforcing concrete has a length in the range of 1/4 inch to 4 inches; an outer diameter in the range of 4 mils to 30 mils; a crimp frequency of 10-30 crimps per inch and an amplitude in the range of 1/2 mil-10 mils. The invention also includes a cylindrical bundle of the aforementioned fibers retained within an outer paper wrapper that dissolves and/or disintegrates within a concrete mixer in which the wrapped bundles are dispersed.
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