Results 131 to 140 of about 1,019 (183)

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

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
Quan Nguyen, Delwyn G. Fredlund, Lal Samarasekera, Brent L. Marjerison   +3 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

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

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

Calibration of tensiometer for direct measurement of matric suction

Géotechnique, 2003
Matric suction is a primary variable in the analysis of the hydromechanical behaviour of unsaturated soils.
Tarantino, Alessandro, Mongiovì, Luigi
openaire   +4 more sources

Matric Suction in Recycled Unbound Granular Materials

Geo-Congress 2014 Technical Papers, 2014
The matric suction within unbound granular materials (UGMs) can be small when compared with cohesive soil, however suction can influence the engineering behavior of UGMs. Unfortunately, there are few studies on the potential matric suction in UGMs. This paper presents matric suctions for seven recycled products and one virgin aggregate.
A. M. Azam, D. A. Cameron, A. G. Gabr, M. M. Rahman   +3 more
openaire   +1 more source

Principle and Prototype Testing of a New Matric Suction Sensor

Geotechnical Testing Journal, 2010
Abstract 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, Paul Simms, Manuel Padilla   +2 more
openaire   +1 more source