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钢纤维混凝土与素混凝土相比,其最大的优点是韧性有极大地提高,因此,钢纤维混凝土可用于抗震、抗爆和抗冲击等特殊混凝土工程的特殊部位。本研究表明,在所用的试验条件下,当钢纤维的体积掺量为1％和2％时,钢纤维混凝土的轴拉韧度值是素混凝土的2至7倍,并且,韧性的改善程度与素混凝土基体的强度有关,强度越低,钢纤维的增韧效果越好。基体强度S_m与钢纤维指数V_fl/d两参数对轴拉韧性的影响有交互作用。
Compared with plain concrete, steel fiber reinforced concrete has the greatest advantage of great improvement in toughness. Therefore, steel fiber reinforced concrete can be used for special parts of special concrete projects such as earthquake resistance, explosion resistance, and impact resistance. This study shows that under the experimental conditions used, when the volume content of steel fibers is 1% and 2%, the axial tensile toughness value of steel fiber reinforced concrete is 2 to 7 times that of plain concrete, and the toughness is improved. With the strength of the plain concrete matrix, the lower the strength, the better the toughening effect of the steel fiber. The influence of the two parameters of matrix strength S_m and steel fiber index V_fl/d on the axial tensile toughness interacts.