Evolution of pore-structure connectivity in water-saturated weathered granite under freeze–thaw cycles and effects on crack propagation

A Freeze-thaw damage model for rock based on equivalent pore structure

Freeze–Thaw-Induced Surface Crack and Pore Structure Evolution in Compacted Expansive Soil

Reliable characterization of freeze–thaw-induced structural change is essential for evaluating compacted soils used in cold-region engineering, where repeated freezing and thawing can alter both surface integrity and internal pore structure. This study combines digital imaging, quantitative crack analysis, and X-ray co...

From Pore Expansion to Throat Extension: Effects of Freezing Temperature on Microstructural Evolution and Dynamic Strength Decay in Sandstone

Repeated freeze–thaw (F–T) action, together with dynamic disturbances, can progressively weaken rock masses in cold regions. However, how freezing temperature affects the relationship between microstructural evolution and dynamic strength decay remains insufficiently quantified. This study investigated yellow sandstone...

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

To address the deterioration of rock engineering stability in seasonally frozen regions, this study investigated the mechanical response and damage evolution of sandstone subjected to the coupled effects of freeze-thaw (F-T) cycles and filled fractures. Uniaxial compression tests were performed on intact specimens and...

Pore-structure evolution and net bulk shrinkage of undisturbed soft clay during closed-system freeze—thaw: The role of internal hydrothermal redistribution

Anisotropic Evolution of Pore–Fracture Structures and Fractional-Order Porosity Modeling of Deep-Bedded Coal

Understanding the anisotropic mechanical behavior and pore–fracture structure (PFS) evolution of bedded coal under mining disturbance is critical for gas extraction and hazard prevention in deep coal mining. This study employed low-field nuclear magnetic resonance (NMR) and fractal analysis to characterize the PFS of w...