Recycled materials like Bauxite Residue (Red Mud) and Fly Ash are prevalent in recent feasibility studies on reused geotechnical engineering applications. Red Mud is a mining waste from aluminum manufacturing, by-product of coal combustion power plants. Nevertheless, to fully reveal the using those for constructing above-ground earth structures, better understanding their unsaturated performanc...

The Arya-Paris model is an indirect method to estimate the soil water characteristic from particle-size data. The scaling parameter, a, in the original model was assumed constant for all soil textures. In this study, a is defined as a, = (logJV//log«,-), where n, is the number of spherical particles in the ith particle-size fraction (determined by the fraction solid mass, wh and mean particle r...

Lateral subsurface flow (LSF) is a phenomenon frequently occurring in the field induced by local water saturation along horizon boundaries under nonequilibrium conditions. However, observations of LSF undisturbed soils controlled irrigation laboratory are limited but needed for model improvement, prediction, and quantification LSF. We present method extracting an soil monolith boundary introduc...

Abstract An experiment was conducted to compare the unsaturated hydraulic conductivity (K) calculated by Jackson equation and van Genuchten for soils different in gypsum content treated with some soil conditioners. Two were used, gypsiferous (410 gm kg-1gypsium) clayey (435 kg-1 clay), mixed three levels 0, 50, 100%. The peat moss 0 and1%, polymer,0,1.and 2% without addition. Then, packed into ...

The Weibull function is applied extensively in the life sciences and engineering but underused agriculture. was consequently adapted to include parameters metrics that increase its utility for characterizing agricultural processes. included initial final dependent variables (Y 0 Y F, respectively), independent variable (x ), a scale constant (k), shape (c). primary mode, integral average, domai...

Capacity-based indicators of soil physical quality (SPQ) and pore distribution parameters were proposed to assess the effects compost amendment but their determination was limited desorption water retention experiments. This study also considered size obtained from adsorption experiments establish effectiveness in modifying hydrological attributes a sandy loam soil. Repacked samples with differ...

Measurement of soil water retention curves (SWRCs) is time consuming, and there no single laboratory device available to measure a SWRC over an entire range relevant pressures. The van Genuchten (vG) model commonly used characterize the shape SWRC. Bulk electrical conductivity as function content, σ(θ), has been estimate hydraulic properties unsaturated soils, thus making it possible relate σ(θ...

soil water retention curve (swrc) is important in the studies of soil and water relationship, soil conservation, irrigation scheduling, drainage, solute transport, plant growth and crop water stress. the performance of 10 models (simons et al., libardy et al., campbell, farrell and larson, van genuchten, brooks and corey, driessen, exponential bruce-luxmore, power bruce-luxmore, and rogowski) w...

Many soils and other porous media exhibit dual- or multi-porosity type features. In a previous study (Seki et al., 2022) we presented multimodal water retention closed-form hydraulic conductivity equations for such media. The objective of this is to show that the proposed are practically useful. Specifically, dual-BC (Brooks Corey)-CH (common head) (DBC), dual-VG (van Genuchten)-CH (DVC), KO (K...