MODELING HYDRAULIC CONDUCTIVITY AND SWELLING PRESSURE OF SEVERAL COMPACTED BENTONITES AFFECTED BY SALINITY OF WATER

Laboratory Investigation on the Influence of Cyclic Water Injection Pressure on Sands Hydraulic Conductivity

Hydraulic conductivity variations around the boreholes in uniformly graded sands for cyclic water injection pressure have been evaluated by laboratory tests. Prototype laboratory devices have been designed and constructed for this research. The cell has a capability to model the well, the boundary condition and to measure the hydraulic conductivity. While increasing water injection pressure, hy...

Root hydraulic conductivity measured by pressure clamp is substantially affected by internal unstirred layers

Using the root pressure probe in the pressure clamping (PC) mode, the impact of internal unstirred layers (USLs) was quantified for young corn roots, both in experiments and in computer simulations applying the convection/diffusion model of Knipfer et al. In the experiments, water flows (J(Vr)s) during PC were analysed in great detail, showing that J(Vr)s (and the apparent root hydraulic conduc...

saturated hydraulic conductivity and soil penetration resistance affected by some water soluble polymers

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Measurement and Modeling of Unsaturated Hydraulic Conductivity

Determination of unsaturated hydraulic conductivity by internal drainage assuming a uniform soil water profile