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The aim is to explore how freeze-thaw cycles affect the damage and fracture mechanisms of filled fractured sandstone under uniaxial compression.

April 17, 2026Scientific ReportsOpen Access

Experimental study on the damage and failure mechanism of freeze-thaw filled fractured sandstone under uniaxial compression

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The aim is to explore how freeze-thaw cycles affect the damage and fracture mechanisms of filled fractured sandstone under uniaxial compression.
Conducted uniaxial compression tests on filled fractured sandstone across various freeze-thaw cycles.
Utilized microscopic and macroscopic testing methods including acoustic emission, nuclear magnetic resonance, and CT scanning.
Analyzed stress-strain curves to understand fracture behavior and particle dynamics.
Observed intensified particle spalling at sandstone edges with increased freeze-thaw cycles.
Noted a linear decrease in peak strength and elastic modulus as freeze-thaw cycles increased.
Identified a 'micropore shrinkage-micropore increase-macropore expansion' damage process through nuclear magnetic resonance analysis.

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Experimental study examines fracture mechanisms of sandstone under freeze-thaw cycles, suggesting implications for rock stability.

Ren et al. (2026) studied this question.

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