Aggregate slaking during rapid wetting: Hydrophobicity and pore occlusion

摘要: The slaking process after rapid wetting is a key factor controlling soil structural stability in dry soil, and an understanding of the relative importance different mechanisms involved may help design management strategies aimed at maintaining stable surface structure. Slaking has been linked to, among other factors, pressure build-up aggregate, previous work emphasized role organic matter to hamper that build-up, possibly due hydrophobicity, reducing water entry within aggregates hence build-up. This study emphasizes this latter aspect slaking. evolution intra-aggregate pressure, lost by expelled air two soils textures (clay loam silty-clay soil) amended with types paper sludge were studied. Hydrophobicity effects also studied using tensio-active solution. results these experiments showed when...