Results 61 to 70 of about 1,019 (183)

Methods of Soil Water Collection at Different Matric Suctions

open access: yesJapanese Journal of Limnology (Rikusuigaku Zasshi), 1978
To investigate the transport mechanism of solutes in soil water in the unsaturated zone, collection of soil water samples having different matric potential is necessary. Three methods originally developed for the purpose of measuring matric suction, i. e., the centrifuging, the pressure membrane, and the vapor pressure depression methods, were used to ...
SHIMADA, Jun   +2 more
openaire   +2 more sources

A Simple Method Using High Matric Suction Calibration Points to Optimize Soil–Water Characteristic Curves Derived from the Centrifuge Method

open access: yesAgriculture
The centrifuge method serves as an efficient and rapid approach for determining the soil–water characteristic curve (SWCC). However, soil shrinkage during centrifugation remains overlooked and prior modified methods may suffer from complex operations ...
Bo Li   +3 more
doaj   +1 more source

Experimental research on soil water characteristic curve of parallel specimens and its influence on mechanical behavior

open access: yesYantu gongcheng xuebao, 2018
The drying tests on eight triaxial specimens with the same remolding condition are carried out for soil water characteristic curve (SWCC). The differences of SWCC are compared.
YANG Gang 1, 2, YANG Qing 1, 2, LI Wu-gang 2
doaj   +1 more source

Analytical calculation of steady seepage in unsaturated layered soils

open access: yesShuiwen dizhi gongcheng dizhi
The analytical calculations of unsaturated steady-state seepage in the widespread layered soils wewre relatively rare. Based on the Darcy seepage theorem and the continuity condition of soil layer interface, a mathematical model describing the steady ...
Peipei CHEN, Dong QIAO, Nan WU
doaj   +1 more source

Governing failure mode of unsaturated soil slopes under rainwater infiltration

open access: yesE3S Web of Conferences, 2016
Due to rainwater infiltration and loss of matric suction above the wetting font, both translational and rotational slips may occur in an unsaturated soil slope. It is useful to know which failure mode is more critical.
Huang Wengui   +2 more
doaj   +1 more source

Effect of degree of saturation on stresses and pore water pressure in the subgrade layer caused by railway track loading [PDF]

open access: yesRailway Sciences
Purpose – The experiments of this study investigated the effect of the subgrade degree of saturation on the value of the stresses generated on the surface and the middle (vertical and lateral stresses).
Mohammed Y. Fattah   +2 more
doaj   +1 more source

Characterizing the variation of small strain shear modulus for silt and sand during hydraulic hysteresis

open access: yesE3S Web of Conferences, 2016
Experimental studies have indicated that the small strain shear modulus, Gmax, of unsaturated silt and clay has a greater amount during imbibition than during drainage, when presented as a function of matric suction.
Khosravi Ali   +4 more
doaj   +1 more source

Instrumented model slope to investigate the influence of rainfall and slope gradient on matric suction

open access: yesJurnal Ilmiah SINERGI
Prior researchers indicated that prolonged and heavy rainfalls primarily trigger major landslides in Malaysia. This study was carried out to investigate the influence of rainfall on the matric suction of silty sand slopes through a small-scale model.
Jestin Jelani   +6 more
doaj   +1 more source

Unitary Definition of Matric Suction [PDF]

open access: yesJournal of Geotechnical and Geoenvironmental Engineering, 2019
Chao Zhang, Ning Lu
openaire   +1 more source

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