Results 261 to 270 of about 194,945 (299)

Influences affecting the soil-water characteristic curve

Journal of Zhejiang University-SCIENCE A, 2005
The soil-water characteristic curve (SWCC) is the primary partially saturated soil information as its behavior and properties can be derived from it. Although there have been many studies of unsaturated soils and the SWCC, there is still no combined constitutive model that can simulate soil characteristics accurately. In cases when hydraulic hysteresis
Jian Zhou, Yu Jian-lin
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Comparison of Field and Laboratory Soil–Water Characteristic Curves

Journal of Geotechnical and Geoenvironmental Engineering, 2005
Results of field monitoring of moisture content and matric suction at the crest and berm of a large cut slope in completely decomposed granite in Hong Kong are reported. Field moisture content and matric suction clearly show that the volumetric water content increases as a result of rainfall infiltration and decreases as a result of evaporation ...
Yue, ZQ, Tham, LG, Lee, CF, Li, AG, Law, KT   +4 more
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Mathematical attributes of some soil—water characteristic curve models

Geotechnical & Geological Engineering, 2001
Numerous mathematical models have been proposed in the research literature to represent soil—water characteristic curve data. A number of proposed mathematical models are summarized and the significance of each of the associated soil parameters is illustrated. The advantages and disadvantages of the various mathematical models are outlined.
Sillers, W. Scott, Fredlund, Delwyn G., Zakerzadeh, Noshin   +2 more
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Nonlinear Curve-Fitting Procedures for Developing Soil-Water Characteristic Curves

Geotechnical Testing Journal, 2006
Abstract Measurement of soil suction for developing soil-water characteristic curve, SWCC, is a laborious and time-consuming task. On the other hand, commercially available databases that employ empirical fitting functions or the estimation algorithms for establishing the SWCC are quite costly and hence, beyond the reach of many. In such
SREEDEEP, S, SINGH, DN
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Soil-Water Characteristic Curve Equation with Independent Properties

Journal of Geotechnical and Geoenvironmental Engineering, 2004
The soil-water characteristic curve (SWCC) has traditionally been represented using equations whose fitting parameters do not individually correspond to clearly defined soil properties or to features of the curve. As a result, unique sets of parameters are often nonexistent, and sensitivity analyses and statistical assessments of SWCC parameters become
Gilson de F. N. Gitirana, Delwyn G. Fredlund   +1 more
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Soil-Water Characteristic Curves of Stabilized Expansive Soils

Journal of Geotechnical and Geoenvironmental Engineering, 2006
The engineering properties of expansive soils are conventionally improved through the use of additives such as fly ash, lime, and chemical additives. Such soils are often referred to as stabilized or modified or treated expansive soils. The soil-water characteristic curves (SWCC) of two expansive soils from Texas were measured both in natural and ...
Anand J. Puppala, Koonnamas Punthutaecha, Sai K. Vanapalli   +2 more
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Modeling Thermal Conductivity Dryout Curves from Soil-Water Characteristic Curves

Journal of Geotechnical and Geoenvironmental Engineering, 2014
AbstractA new approach is proposed for modeling thermal conductivity dryout curves (TCDCs) using measurements of soil-water characteristic curves (SWCCs) for coarse-grained unsaturated soils. The approach is based on observation of similitude between a bimodal formulation of the SWCC in the form S(ψ) and the TCDC in the form λ(ψ). The model may be used
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Determination of Swelling Characteristics Using Soil Water Characteristic Curve Parameter

Indian Geotechnical Journal, 2016
Several studies demonstrate that the swelling characteristics of expansive soils can be determined from suction properties like initial suction, suction measured at optimum water content, and parameters of soil water characteristic curve (SWCC). The present study deals with the determination of swell potential (S) and swell pressure (S
Janardhan Tahasildar, B. Hanumantha Rao
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Statistical approach in soil-water characteristic curve modelling

2005
In this paper we evaluate a number of model equations for the soil-water characteristic curve (SWCC), provided a relationship exists for each relevant soil. The models are with two parameters and relate suction to volumetric water content for values of suction higher then air entry value. Logarithmic tranformations are applied to the variables in order
Eugenia Stoimenova, Maria Datcheva, Tom Schanz   +2 more
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Predicting Reservoir Pressure with Soil-Water Characteristic Curve

Advanced Materials Research, 2014
Experiment study on shallow gassy unsaturated sand under different confining pressure with GDS triaxial system's 4D stress path module is carried out. Different SWCC shapes under different confining pressures are analyzed. The results show that unsaturated sand's water retention capacity declines gradually with confining pressure infliction and ...
Xiong Wei Li, Yong Wang, Xiao Shu Jiang
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