The fracture toughness,characteristic length and damage mechanism of HSC,MSC and NSC are discussed in the paper,based on the compression,bending and fracture experiment data of HSC,MSC and NSC.

• 以HSC、MSC和NSC抗压、弯折和断裂试验数据为依据 ,针对HSC、MSC和NSC的断裂韧度、特征长度及破坏机理展开讨论。