中文摘要：

在12组三点弯曲梁稳定断裂试验的基础上，采用逆分析法获得混凝土四线性软化曲线，系统地研究了骨料粒径、试件尺寸、混凝土强度等对混凝土软化特性的影响规律．

英文摘要：

On the basis of 12 groups of experiments on the stable fracture of three-point bending beams, four-linear softening curves of concrete were obtained with the inverse analysis method. A systematic study was conducted to investigate into the effects of the aggregate size, specimen size and concrete strength on the softening properties of concrete.