What does this research mean for the field?

Freeze-thaw cycles linearly degrade the strength of sandstone with filled fractures, while larger fracture dip angles accelerate damage by shifting pore-size distribution toward larger pores through a distinct five-stage evolution sequence. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This research aims to understand how freeze-thaw cycles affect the mechanical behavior and damage evolution of fractured sandstone.

August 13, 2026Scientific ReportsOpen Access

Mechanical behavior and multiscale damage evolution of filled fractured sandstone under freeze–thaw cycles

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This research aims to understand how freeze-thaw cycles affect the mechanical behavior and damage evolution of fractured sandstone.
Conducted uniaxial compression tests on intact and fractured sandstone specimens after 0, 20, 40, and 60 freeze-thaw cycles.
Utilized a multi-technique monitoring framework combining acoustic emission, digital image correlation, and nuclear magnetic resonance to assess damage characteristics.
Investigated the influence of fracture geometry on pore-structure evolution during freeze-thaw cycles.
Freeze-thaw cycles caused a linear decrease in the mechanical strength of sandstone, with significant degradation observed.
Fracture dip angles influenced the pore-size distribution, with higher angles resulting in larger pore expansions and increased frost-heave stress concentration.
NMR analysis revealed a five-stage pore-evolution sequence that characterizes the transition from micropores to macropores.

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Implication

Randomized trial evaluated mechanical response and damage evolution in fractured sandstone, suggesting structural stability implications for cold regions.

Cite This Study

A 2026 study studied this question.

synapsesocial.com/papers/6a7d75f62b0e0cff3f63efe7 https://doi.org/10.1038/s41598-026-66519-9

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Implication

Randomized trial evaluated mechanical response and damage evolution in fractured sandstone, suggesting structural stability implications for cold regions.

Mechanical behavior and multiscale damage evolution of filled fractured sandstone under freeze–thaw cycles

Key Points

Discussion

Implication

Cite This Study

Mechanical behavior and multiscale damage evolution of filled fractured sandstone under freeze–thaw cycles

Key Points

Discussion

Implication

Cite This Study

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