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September 10, 2025

Study on the Mechanical Properties and Dynamic Damage Evolution Mechanism of Green Sandstone under Freeze-thaw Loading Conditions

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Repeated freeze-thaw cycles resulted in increasing damage in sandy rock samples, highlighting deterioration in strength.
After 40 freeze-thaw cycles, the initial damage value rose to 0.68, indicating critical structural failure.
Acoustic emission signals reflected changes consistent with stress-strain behavior, showcasing damage progression.
The failure process categorizes into initiation, acceleration, and stabilization, with the acceleration phase crucial for failure.

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Experimental investigations reveal damage evolution in sandy rock under freeze-thaw cycles, indicating instability.

Li et al. (2025) studied this question.

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