FIBER REINFORCED CEMENT BASED MIXED MATERIAL

摘要

Provided is a fiber reinforced cement based mixed material which is capable of ensuring high tensile strength and excellent toughness even after the occurrence of cracks. This fiber reinforced cement based mixed material comprises: cement; an additive; water; an admixture; aggregate particles contained in the amount of 50-95% in terms of weight ratio with respect to the total weight of the cement and the additive; and fiber. The average particle size of the aggregate particles is 0.2-0.8 mm, at least some fibers are unevenly profiled fibers (1) with uneven surfaces, a depth (h) of a recessed portion (11) of the uneven profile of each unevenly profiled fiber is formed such that, with respect to a minimum cross sectional diameter (H), the ratio (h/H) is 0.05-0.8, and a pitch (p) of the recessed portion (11) of the uneven profile of each unevenly profiled fiber in the longitudinal direction is formed such that, with respect to a maximum cross sectional diameter (B), the ratio (p/B) is 0.3-10.0.