Compositions: coating or plastic – Coating or plastic compositions – Inorganic settable ingredient containing
Patent
1995-10-06
1997-05-13
Marcantoni, Paul
Compositions: coating or plastic
Coating or plastic compositions
Inorganic settable ingredient containing
106644, 106724, C04B 1606
Patent
active
056288220
ABSTRACT:
Graded fiber additives for addition to proportioned concrete comprising a mixture of fibers having deniers ranging from about 3 to about 5000 and lengths ranging from about 0.0625 to 3 inches (0.16 to 7.6 cm), graded to provide pluralities of different fiber designs comprising variations in at least three of lengths, widths, thicknesses, deniers, fibrillations, cross-sections or aspect ratios, prior to their addition to concrete, or at least two of lengths, widths, thicknesses, deniers, fibrillations or aspect ratios, prior to their addition to concrete, or at least two of widths, thicknesses, deniers, fibrillations, cross-sections or aspect ratios, prior to their addition to the concrete, so as to accommodate the mortar factions within proportioned concrete containing graded aggregate, provide a continuous distribution of fibers therein and thereby inhibit the initiation of cracking. The present invention also provides concrete having improved crack resistance consisting essentially of concrete; and from about 0.025 to 1 percent by volume of a graded, synthetic fiber mixture, having deniers ranging from about 3 to about 5000 and lengths ranging from about 0.0625 to 3 inches (0.16 to 7.6 cm), as described hereinabove, whereby initiation of cracking of the concrete is inhibited as compared to concrete reinforced by the addition of single length fibers. The present invention further provides methods for improving the crack resistance of concrete and for inhibiting the initiation of cracking thereof.
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"Properties of Graded Fibrillated Polypropylene Fiber Reinforced Concrete" by Bayasi, Department of Civil Engineering, San Diego State University, Sep. 1992.
"Post-Peak Flexural Strength of Synthetic Fiber Reinforced Concrete Using MD Polypropylene Fibers Manufactured by Fibermesh Company" By Bayasi, Department of Civil Engineering, San Diego State University, Feb. 1993.
"Post-Peak Flexural Strength of Synthetic Fiber Reinforced Concrete Using 3/4" Monofilament Polypropylene Fibers Manufactured by Fibermesh Company" by Bayashi, Dept. of Civil Engineering, San Diego State Univ., Apr. 1993.
"Post-Peak Flexural Strength of Synthetic Fiber Reinforced Concrete Using 1/2" Monofilament Polypropylene Fibers Manufactured by Fibermesh Company" by Bayashi, Dept. of Civil Engineering, San Diego State Univ., May 1993.
Marcantoni Paul
Synthetic Industries, Inc.
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