Results 161 to 170 of about 67,863 (210)

Swell pressure, matric suction, and matric suction equivalent for undisturbed expansive clays

Canadian Geotechnical Journal, 2015
Methods of computation for soil heave based on an “equivalent” net normal stress path approach often have built-in assumptions regarding the relationship between in situ matric suction, overburden stress, and swell pressure. The term “matric suction equivalent” has been previously defined as the difference between in situ state of stress projected on ...
William N Houston
exaly   +2 more sources

Seasonal pattern of matric suctions in highway subgrades

Canadian Geotechnical Journal, 2010
The 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
Delwyn G Fredlund
exaly   +2 more sources

Matric suction measurements of compacted subgrade soils

Road Materials and Pavement Design, 2015
The mechanical response of compacted subgrade soils is highly influenced by matric suction. This paper proposes a detailed procedure for matric suction determination, using the filter paper technique, in samples compacted in the laboratory using the standard Proctor procedure (ASTM D698-12).
Dong Tang, Eshan Ganju, Rodrigo Salgado
exaly   +2 more sources

Influence of Matric Suction on Pressuremeter Modulus

GeoCongress 2012, 2012
Pre-bored monocell pressuremeter tests were conducted in a calibration chamber containing compacted low plasticity clayey silt. A miniature pressuremeter probe having a diameter of 15.2 mm and expandable length to diameter ratio of 8.5 was used; this provided a soil bed diameter (610 mm) to probe diameter ratio of 40. Pressuremeter tests were conducted
G.A. Miller, N.K. Tan, K.K. Muraleetharan   +2 more
openaire   +1 more source

Change of matric suction under undrained condition in relatively low matric suction ranges

2011
Several different types of soils in nature are more commonly found in a state of unsaturated condition, particularly in arid and semi-arid regions. Also, expansive soils, collapsible soils, residual soils and compacted soils are conventionally categorized as problematic soils.
Nishimura T, Koseki J
openaire   +1 more source

Effect of pore fluid osmotic suction on matric and total suctions of compacted clay

Géotechnique, 2015
The experimental results of the present study on compacted expansive clay illustrate that matric suction increases with the increase in pore fluid osmotic suction due to changes in soil structure. Scanning electron micrographs show that particle stacking (aggregations) increases with increase in pore fluid osmotic suction and cation valence due to ...
T. Thyagaraj, U. Salini
openaire   +1 more source

Influence of Matric Suction on the Stability of Unsaturated Slope

Advanced Materials Research, 2012
Matric 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, Sheng Guo Cheng, Zhi Wei Yu   +2 more
openaire   +1 more source

Is Matric Suction a Stress Variable?

Journal of Geotechnical and Geoenvironmental Engineering, 2008
The 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 ...
openaire   +1 more source

Laboratory measurement of matric suction in pyroclastic soil using vacuum and high-suction tensiometers

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.
openaire   +3 more sources

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., Kayadelen, C., Taskiran, T., Tekinsoy, M.A., TAŞKIRAN, TAHA, Kayadelen C., Taşkıran T., Tekinsoy M.A.   +7 more
exaly   +2 more sources