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Graded fiber design and concrete reinforced therewith
Graded fiber design and concrete reinforced therewith
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机译：渐变纤维设计和混凝土增强
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摘要
Graded fiber additives of the present invention provide a mixture a fibers having a plurality of deniers, cross-sections and aspect ratios defining a plurality of different types wherein each type present in the mixture differs from every other type by at least one of denier, cross- section and aspect ratio, the plurality of types being designed and selected to provide optimum graded fiber distribution to accommodate the mortar factions common to proportioned concrete containing graded aggregate, and thereby to inhibit the initiation of cracking. Concrete and like materials having improved crack resistance comprise concrete and from about 0.025 to one percent by volume of fiber mixture providing a plurality of deniers, cross-sections and aspect ratios. The present invention further provides a methods for improving the crack resistance of concrete and like materials and for inhibiting the initiation of cracking comprising the steps of adding to a preselected amount of concrete a mixture of fibers having a plurality of deniers, cross- sections and aspect ratios defining a plurality of different types; and mixing the components sufficiently to distribute the fibers thoroughly throughout the concrete.
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