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Influence of matric suction on shear strength behavior of a residual clayey soil [PDF]
Environmental Geology, 2007 In this paper, the shear strength with respect to the matric suction of unsaturated soils was studied. For this purpose, unsaturated triaxial testing procedures were applied to the undisturbed residual soil specimens. An apparatus for performing triaxial
Tekinsoy, M. A. +2 more
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Seasonal pattern of matric suctions in highway subgrades
Canadian Geotechnical Journal, 2010The performance of “thin membrane surface” (TMS) highways is largely controlled by the strength of the subgrade soil, which in turn is a function of matric suction. Thermal conductivity matric suction sensors were used to indirectly measure in situ matric suctions. In September 2000, 32 thermal conductivity sensors were installed under TMS highways at
Quan Nguyen +3 more
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Is Matric Suction a Stress Variable?
Journal of Geotechnical and Geoenvironmental Engineering, 2008The writer attempts to clarify and address two fundamental questions regarding the appropriate use of matric suction in unsaturated soil mechanics: Is matric suction a stress variable? and Is matric suction a stress state variable? These questions are examined by employing the universally accepted mechanical equilibrium principle, the concept of ...
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Influence of Matric Suction on the Stability of Unsaturated Slope
Advanced Materials Research, 2012Matric suction plays a significant role in the unsaturated slope stability and receives a rising interest in how matric suction affects the unsaturated slope stability. According to the shear strength theories and soil-water characteristic curve of unsaturated soils，matric suction parameters were proposed to study the influences of matric suction on ...
Xiang Hui Hu +2 more
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2006
The paper presents suction measurements on pyroclastic soils using vacuum tensiometer and high-suction tensiometers. Laboratory measurements with the vacuum tensiometer aimed at assessing the performance of this instrument, which had to be used for field measurement of matric suction.
NICOTERA, MARCO VALERIO, TARANTINO A.
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The paper presents suction measurements on pyroclastic soils using vacuum tensiometer and high-suction tensiometers. Laboratory measurements with the vacuum tensiometer aimed at assessing the performance of this instrument, which had to be used for field measurement of matric suction.
NICOTERA, MARCO VALERIO, TARANTINO A.
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Principle and Prototype Testing of a New Matric Suction Sensor
Geotechnical Testing Journal, 2010Abstract A new principle for matric suction measurement is proposed, based upon strain measurement of a contiguous porous material of high air-entry value (AEV). In theory, this allows for the measurement of matric suction without the associated errors due to cavitation or hysteresis for suctions below the AEV.
Adedeji Dunmola +2 more
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On equations for the total suction and its matric and osmotic components
Cement and Concrete Research, 2008A clear fundamental understanding of suctions is crucial for the study of the behaviour of plastic cement mortar and concrete, including plastic shrinkage cracking. In this paper, the expression relating the change in free energy of the pore water with an isothermal change in pressure is first derived.
Dao, Vinh N.T. +2 more
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EFFECT OF MATRIC AND OSMOTIC SUCTION ON THE EMERGENCE OF WHEAT AND BARLEY
Canadian Journal of Plant Science, 1988Total emergence of wheat and barley was not affected my matric and osmotic suctions up to 0.5 and 0.9 MPa, respectively. Above 1.5 MPa matric suction, seeds germinated but did not emerge. Emergence rate decreased with increasing matric and osmotic suctions, except at high suctions where the reverse was observed.Key words: Emergence, osmotic suction ...
X. HAO, E. DE JONG
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Numerical Modeling of a Thermal Conductivity Matric Suction Sensor
Geotechnical Testing Journal, 1994Abstract Thermal conductivity matric suction sensors appear to be a promising device for the measurement of suction in soil. The technique indirectly measures matric suction by measuring the thermal conductivity of a ceramic block. This paper uses both a spherical and a cylindrical porous medium to simulate the heat flow in a thermal ...
A Xing, DG Fredlund
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The relationship between thermal conductivity and matric suction of soils
2021<p>The soil thermal conductivity (&#955;) and matric suction of soil water (h, the negative of matric potential) relationship has been widely used in land surface models for estimating soil temperature and heat flux following the McCumber and Pielke (1981, MP81) &#955;-h model.
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