Fracture properties of asphalt mixtures containing fine and coarse Electric-Arc Furnace (EAF) aggregates were determined at low-temperature conditions by implementing Cohesive Zone Modeling (CZM). Semi-Circular Bending (SCB) test was conducted in both fracture Mode I and II (opening tensile and in-plane shear, respectively), and the bi-linear traction separation law was used to obtain the coefficients of cohesive elements. To determine the fracture failure probability concerning the adopted testing parameters, the two-parameter Weibull distribution curve was fitted on the FEM results. Based on CZM simulation modeling, it was observed that the simulated curves were promisingly consistent with the experimental results. Weibull distribution analysis revealed that the inclusion of fine EAF slag aggregates increases the fracture failure probability compared with those containing coarse aggregates. A statistically predictive model was introduced, based on the Weibull distribution results, to predict the in-plane shear (Mode II) fracture properties using those of Mode I.

通过执行内聚区模型（CZM）在低温条件下确定了包含细和粗电弧炉（EAF）聚集体的沥青混合物的断裂性能。在I型和II型断裂（分别为开放拉伸和面内剪切）下均进行了半圆弯曲（SCB）试验，并使用双线性牵引分离定律获得了粘结单元的系数。为了确定与所采用的测试参数有关的断裂破坏概率，在有限元结果上拟合了两参数的威布尔分布曲线。基于CZM仿真模型，观察到仿真曲线有望与实验结果一致。威布尔分布分析表明，与包含粗骨料的EAF矿渣骨料相比，包含细电弧炉渣的骨料增加了断裂失败的可能性。基于威布尔分布结果，引入了统计预测模型，以使用模式I的面内剪切（模式II）断裂特性进行预测。