Carbon fiber-reinforced concrete and method for preparing the same
AssigneeMitsubishi Chemical Corporation
InventorsMitsuharu Tezuka, Mitsuru Awata, Akira Shiraki
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Abstract
A carbon fiber-reinforced concrete containing a cement, a coarse aggregate, a fine aggregate, a carbon fiber and water, the carbon fiber having an average length not less than the maximum size of the coarse aggregate and also a tensile strength of at least 300 kgf/mm.sup.2.
Claims7
A carbon fiber-reinforced concrete containing a cement, a coarse aggregate, a fine aggregate, a carbon fiber and water, wherein the carbon fiber is dispersed in the carbon fiber-reinforced concrete in an amount of from 0.1 to 20 vol % and has an average length in the range of from 30 mm to 100 ram, and not less than the maximum size of the coarse aggregate, a tensile strength of at least 300 kgf/mm.sup.2 and a ductility of at least 1%.
A method for preparing a carbon fiber-reinforced concrete, which comprises dispersing a mixture of a cement, a coarse aggregate, a fine aggregate, water and a chopped strand of carbon fibers having an average length in the range of from 30 mm to 100 mm, and not less than the maximum size of the coarse aggregate, a tensile strength of at least 300 kgf/mm.sup.2, and a ductility of at least 1%.
Dependencies are inferred from the claim text.