Influences affecting the soil-water characteristic curve

Zhou, Jian; Yu, Jianlin

doi:10.1631/jzus.2005.a0797

Cited by 60 publications

(33 citation statements)

References 11 publications

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“…The van Genuchten equation for the estimation of soil hydraulic properties has been widely used since it was first published in 1980 (Neto et al 2011, van Genuchten 1980, Zhou and Yu 2005 …”

Section: Moisture Storage Functionmentioning

confidence: 99%

“…The parameter n is related to the pore size distribution where a larger value corresponds to more uniform pore sizes (Zhou and Yu 2005). The value of α is related to the inverse of the air entry suction (Schaap, Leij, and van Genuchten 2001), and m is related to the asymmetry of the curve (Zhou and Yu 2005).…”

Section: Moisture Storage Functionmentioning

confidence: 99%

“…The value of α is related to the inverse of the air entry suction (Schaap, Leij, and van Genuchten 2001), and m is related to the asymmetry of the curve (Zhou and Yu 2005). The soil textures analyzed in this study (the type of soils for which essential properties for hygrothermal simulation will be defined) correspond to the 12 texture classes used by the Natural Resources Conservation Service of the US Department of Agriculture (Noorallah 1999).…”

Section: Moisture Storage Functionmentioning

confidence: 99%

See 2 more Smart Citations

Hygrothermal Simulation of Foundations: Part 1 - Soil Material Properties

Kehrer¹,

Pallin²

2012

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Section: Moisture Storage Functionmentioning

confidence: 99%

Section: Moisture Storage Functionmentioning

confidence: 99%

Section: Moisture Storage Functionmentioning

confidence: 99%

See 1 more Smart Citation

Hygrothermal Simulation of Foundations: Part 1 - Soil Material Properties

Kehrer¹,

Pallin²

2012

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“…A soil normally experiences some kind of stress due to its depositional history in the field. A number of researches have also revealed that the stress state of a soil has some influence on the SWCC [12]. The stress state has a remarkable influence on the compressibility of soils.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Soil–Water Characteristic Curves in One-Dimensional and Isotropic Stress Conditions

Habasimbi

Nishimura

2018

Soil Systems

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Understanding unsaturated soil behavior is key to the design of foundations and embankment structures. Geotechnical engineers have applied net normal stress and matric suction to these engineering problems. Water retention activity in soils is used to predict seepage problems and stability of slope failures. Soil-Water Characteristic Curve (SWCC) tests contribute largely to matric suction interpretation. Determination of SWCCs in the laboratory is usually done using a pressure plate apparatus where vertical or confining stress cannot be applied. Mathematical models of SWCC though commonly accepted in geotechnical engineering practices, do not take into consideration stress conditions such as the difference between a one-dimensional condition and isotropic confining conditions. This study conducted SWCC tests of a silt soil under one-dimensional and isotropic confining stress conditions and focused on the differences between these types of SWCC data sets. Vertical and isotropic confining stresses ranging from 100 to 600 kPa were applied under both stress conditions. SWCCs appears to be affected by the influence of different stress conditions. Lateral pressure and confinement on an isotropic compression condition caused the soil specimen to become dense in void structure and consequently, soil moisture flow movement decreased. This probably induced high retention activities in the silt soil specimen. The study further suggests that the current SWCC models require further development to take into consideration the effect of different stress conditions.

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“…A number of constitutive models and experimental studies have been developed to analyze the behavior of saturated soils under different temperatures (Hueckel and Borsetto, 1990a;Delage et al, 2000;Cui et al, 2000;Laloui and Cekerevac, 2003;Zhou and Yu, 2005;Yao and Zhou, 2013). However, the models that consider the temperature effects on unsaturated soils are limited (Francois and Laloui, 2008;Tang and Cui, 2009;Cai et al, 2010;Zhou et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

A new triaxial apparatus for testing soil water retention curves of unsaturated soils under different temperatures

Cai

Zhao

et al. 2014

J. Zheijang Univ.-Sci.

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This paper presents a new triaxial apparatus for testing soil water retention curves (SWRCs) under different temperatures. The components of this modified apparatus, as well as the special features of each component, were described. The key part of this innovative apparatus was the temperature control system, which was cooperated with a loading system and a suction control system. Different methods of heating were compared and a more effective method, which used a heating element around the pressure chamber, was consequently adopted. Under different temperatures (25, 40, and 60 °C) and different net mean stresses (40, 100, and 200 kPa), typical results from the SWRCs tests for unsaturated silty clay were presented and analyzed. The experimental results show that the volumetric water content reduces with the increasing temperature at constant suction.

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Influences affecting the soil-water characteristic curve

Cited by 60 publications

References 11 publications

Hygrothermal Simulation of Foundations: Part 1 - Soil Material Properties

Hygrothermal Simulation of Foundations: Part 1 - Soil Material Properties

Comparison of Soil–Water Characteristic Curves in One-Dimensional and Isotropic Stress Conditions

A new triaxial apparatus for testing soil water retention curves of unsaturated soils under different temperatures

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