A construction material for reinforcing concrete, which has a high tensile elastic modulus, excellent alkali resistance, creep resistance, and excellent productivity, And to provide a concrete member or structure reinforced using the same. A construction material for reinforcing concrete, comprising polyparaphenylene terephthalamide fibers and a matrix resin, wherein the polyparaphenylene terephthalamide fibers have a crystallinity of 70 percent or more as measured by wide-angle X-ray diffraction, and a concrete member or structure reinforced thereby. None
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