5Li Qingbin, Guan Junfeng, Wu Zhimin, et al . Fracture behavior of site-casting dam concrete [ J] . ACI Material .lournal. 2015. 112(1): 11-20.
6Bazant Z P, Prat P C . Effect of temperature and humidity on fracture energy of concrete[J] . ACI Materials Jour- nal, 1988, 85(4): 262-271 .
7Baker G . The effect of exposure to elevated temperatures on the fracture energy of plain concrete[J] . Materials and Structures, 1996, 29(6): 383-388.
8Abdel-Fattah H, Hamoush S A . Variation of the fracture toughness of concrete with temperature [J] . Construc- tion and Building Materials, 1997, 11(2): 105-108.
9Yu J, Yu K, Lu Z . Residual fracture properties of concrete subjected to elevated temperatures[J] . Materials and Structures, 2012, 45(8): 1155-1165.
10Wittmann, F H, Roelfstra P E, Mihashi H, et al. Influence of age of loading, water-cement ratio and rate of load- ing on fracture energy of concrete[J] . Materials and Structures, 1987, 20(2) : 103-110 .