Damage evolution of asphalt mixture under freeze-thaw cyclic loading from a mechanical perspective. (January 2021)

• Record Type: Journal Article
• Authors: Zhang, Zeyu; Liu, Quan; Wu, Qi; Xu, Huining; Liu, Pengfei; Oeser, Markus
• Is Part Of: International journal of fatigue. Volume 142(2021)
• Publication Date: 2021-01
• Subjects: Asphalt mixture -- Freeze-thaw damage -- Continuum damage mechanics -- Connective void content -- X-ray CT; Materials -- Fatigue -- Periodicals; Materials -- Fatigue; Periodicals; 620.1122
• DOI: 10.1016/j.ijfatigue.2020.105923
• Languages: English
• ISSNs: 0142-1123

Abstract

Highlights: Freeze-thaw damage is characterized by connective void content. Damage evolution of asphalt mixture under freeze-thaw cycles is modeled and verified. The accumulation of freeze-thaw damage is found to be non-linear. Abstract: This study aims to understand the damage evolution of water-saturated asphalt mixture under freeze-thaw cyclic loading from the perspective of continuum damage mechanics (CDM). The connective void content of three types of asphalt mixtures was employed to characterize the damage to the corresponding asphalt mixture sample under freeze-thaw cyclic loading. The variation of connective void content revealed the nonlinear characteristics of asphalt mixture damage accumulation. A CDM-based model was built to describe the damage evolution law of asphalt mixture. The results predicted by this model agreed with the experimental data, validating its feasibility.