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一、引言纤维混凝土是指掺有分散而不连续纤维的混凝土或砂浆。纤维的长度与直径之比(以下暂称“长径比”——译注)一般为30至150,长度约为1至76.2毫米。采用过的纤维有:1)由切断的钢丝制成的圆钢纤维,直径为0.25至0.76毫米;2)由剪薄或压扁的钢丝制成的扁平的钢纤维,其横截面之厚度为0.15至0.41毫米,宽度为0.25至0.90毫米,也有用曲皱的或变形的钢纤维的;3)不成股的玻璃纤维,直径为0.005至0.015毫
I. INTRODUCTION Fiber concrete refers to concrete or mortar mixed with discrete, discontinuous fibers. The ratio of fiber length to diameter (hereinafter referred to as “length ratio”) is generally 30 to 150, and the length is about 1 to 76.2 mm. The used fibers are: 1) round steel fibers made of severed steel wire, having a diameter of 0.25 to 0.76 mm; 2) flat steel fibers made of thin-cut or flattened steel wire having a cross-sectional thickness of 0.15 to 0.41 mm, width 0.25 to 0.90 mm, also useful for creased or deformed steel fibers; 3) unstocked glass fibers, 0.005 to 0.015 mm in diameter