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Dr. Xingkuan Deng
Department of Civil and Airport Engineering, Nanjing University of Aeronautics and Astronautics

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0 multi-scale
0 fracture behavior
0 asphalt concrete
0 Fatigue and damage
0 FEM Modeling and Simulation

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Journal article
Published: 16 April 2021 in Materials
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Cold recycled mixture (CRM) has been widely used around the world mainly because of its good ability to resist reflection cracking. In this study, mixed-mode cracking tests were carried out by the designed rotary test device to evaluate the cracking resistance of CRM. Through the finite element method, the heterogeneous model of CRM based on its meso-structure was established. The cracking process of CRM was simulated using the extended finite element method, and the influence of different notch lengths on its anti-cracking performance was studied. The results show that the mixed-mode fracture test method can effectively evaluate the cracking resistance of CRM by the proposed fracture parameters. The virtual tests under three of five kinds of mixed-cracking modes have good simulation to capture the cracking behavior of CRM. The effect of notch length on the initial crack angle and the crack propagation process of the CRM is mainly related to the distribution characteristics of its meso-structure. With the increase of the proportion of Mode II cracking, the crack development path gradually deviates, and the failure elements gradually increase. At any mixed-mode level, there is an obvious linear relationship between the peak load, fracture energy, and the notch length.

ACS Style

Lei Gao; Xingkuan Deng; Ye Zhang; Xue Ji; Qiang Li. Fracture Parameters and Cracking Propagation of Cold Recycled Mixture Considering Material Heterogeneity Based on Extended Finite Element Method. Materials 2021, 14, 1993 .

AMA Style

Lei Gao, Xingkuan Deng, Ye Zhang, Xue Ji, Qiang Li. Fracture Parameters and Cracking Propagation of Cold Recycled Mixture Considering Material Heterogeneity Based on Extended Finite Element Method. Materials. 2021; 14 (8):1993.

Chicago/Turabian Style

Lei Gao; Xingkuan Deng; Ye Zhang; Xue Ji; Qiang Li. 2021. "Fracture Parameters and Cracking Propagation of Cold Recycled Mixture Considering Material Heterogeneity Based on Extended Finite Element Method." Materials 14, no. 8: 1993.