Based on these results and the theory of fracture mechanics set up the new evaluation method ? racture - cmod toughness method . the concept of strength and toughness index of steel fiber concrete is founded 在此基础之上,建立了以断裂力学为理论基础的钢纤维韧性评测方法? ?断裂cmod韧度指数法;提出钢纤维混凝土强韧双重指标概念。