Abstract Collapsible soils are almost found in unsaturated states and involved significant engineering problems. Geotechnical challenges of such represented by the hydro-mechanical behaviour during wetting–drying cycles due to humidity climate conditions. The main objective this paper is investigate soil–water characteristic curve (SWCC) collapsible soils. In study, three types were investigate...

The frequency of soil drying-rewetting cycles is predicted to increase under future global climate change, and arbuscular mycorrhizal fungi (AMF) are symbiotic with most plants. However, it remains unknown how AMF affect plant growth under different frequencies of soil drying-rewetting cycles. We subjected a clonal wetland plant Phragmites australis to three frequencies of drying-rewetting cycl...

The influence of interface porosity on the wetting properties of colloid-polymer mixtures is studied within density functional theory for the Asakura-Oosawa-Vrij model at the surface of a quenched hard-sphere matrix. While the porosity hardly changes the location of the transition from partial to complete wetting at colloidal bulk gas-liquid coexistence, the onset of wetting, as signaled by the...

Meteorological drought in the Hadley Centre global climate model is assessed using the Palmer Drought Severity Index (PDSI), a commonly used drought index. At interannual time scales, for the majority of the land surface, the model captures the observed relationship between the El Niño–Southern Oscillation and regions of relative wetness and dryness represented by high and low values of the PDS...

To better understand and analyze the unsaturated stability of loess filling body, it is necessary to study changes in suction stress before after drying-wetting cycles. In this study, SWCC compacted cycles was tested using filter paper method. Then, calculated microstructure sample determined by SEM NMR. The results showed that had an important influence on SSCC loess. change can be well explai...

The hydrological and mechanical properties of granitic residual soils can be significantly altered by periodical wetting drying (W-D) cycles. soil structure degradation induced W-D cycles lead to mass failure collapsing gully erosion in hilly slopes south China. However, limited attempts have been made at a comprehensive investigation the effects on soils, especially pedon scale. purpose this p...