Results 181 to 190 of about 8,420 (228)

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   +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

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

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

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   +3 more sources

Modified Soil Water Retention Functions for All Matric Suctions

Water Resources Research, 1995
The Brooks‐Corey and van Genuchten functions were modified to adequately represent retention at all matric suctions. The modification consisted of replacing the residual water content with an adsorption equation (Campbell and Shiozawa, 1992). The modified functions retain the form of the original functions in the wet range and the form of an adsorption
Michael J. Fayer, C. Steven Simmons
openaire   +1 more source

Numerical Modeling of a Thermal Conductivity Matric Suction Sensor

Geotechnical Testing Journal, 1994
Abstract 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
openaire   +1 more source

Long-term measurement of matric suction using thermal conductivity sensors

Canadian Geotechnical Journal, 2003
Thermal conductivity (TC) sensors, which provide estimates of matric suction, were used in a field experiment designed to characterize unsaturated water movement through coarse mine waste rock at a mine site in northern Saskatchewan. Two years of monitoring data were used to evaluate long-term TC sensor performance and accuracy.
Craig Nichol, Leslie Smith, Roger Beckie
openaire   +1 more source