Issue 43

M. Fakhri et alii, Frattura ed Integrità Strutturale, 43 (2018) 113-132; DOI: 10.3221/IGF-ESIS.43.09 125 rates at near zero temperature, less fracture energy is reported for AC specimens manufactured with lime aggregate comparing to those manufactured with silica aggregate while this trend is vice versa under low loading rate (i.e. 1 mm/min). Similar to test data obtained under pure mode I and pure mode II loading conditions at intermediate temperature, the trend of mixed mode I/II fracture energy change is increasing by loading rate increment for both asphalt mixtures manufactured with silica and lime aggregate as shown in Fig. 16. Moreover, at 25°C AC specimens manufactured with lime aggregate generally show more resistance against fracture under mixed mode I/II comparing to those built with silica aggregate. But, the difference between the fracture energy values of AC specimens manufactured with lime and silica aggregate in loading rates of 1 to 10 mm/min is not satisfactorily meaningful. Figure 14 : The effect of temperature on fracture energy at 5°C under pure mode II loading condition. Figure 15 : The effect of aggregate type on fracture energy at 5°C under mixed mode I/II loading condition.