13th International Conference on Fracture June 16–21, 2013, Beijing, China -4- shown in Fig. 7, the load increases linearly and then suddenly drops to zero. Therefore, one may suggest that the asphalt concrete failure was due to brittle fracture with negligible nonlinear deformation. Considering the area under the load-load line displacement curve, Fig. 7 shows that the asphalt mixture needs higher energy to fracture under mode-II loading than under mode-I loading. Figure 2. Three point test set-up Figure 3. Fracture test using first set-up
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