On long-term direct measurement of suction in soft soils

Meghdad Bagheri, Mohammad Rezania, Mohaddeseh Mousavi Nezhad

Research output: Contribution to conferenceAbstract

Abstract

High Capacity Tensiometers (HCTs) have recently received significant interest in laboratory measurements of soil suction mainly due to their fast response time, accurate measurements, and ease of transport and installation in geotechnical apparatuses. An HCT is typically comprised of a strain-gauged diaphragm for pressure measurement, a water reservoir and a high air-entry porous ceramic filter as the interface between the soil and the pressure measurement system. The major drawback of the HCTs is occurrence of cavitation in the water reservoir and the porous ceramic before pressure equalisation. Recent studies on the development of HCTs have focused on identifying experimental procedures for expanding the range and duration of suction measurements. In this work a new HCT is designed and constructed. In this design, a new technique is employed to account for the potential of cavitation occurrence during suction measurement. The functionality of the developed tensiometer is examined through a number of element level tests and it is shown that the newly designed HCTs are capable of providing an improved response, in both range and duration, for suction measurements.
Original languageEnglish
Publication statusPublished - 2016
Event2nd Annual Interpore UK Chapter Conference - Loughborough, United Kingdom
Duration: 5 Sep 20166 Sep 2016
Conference number: 2
http://www.rsc.org/events/detail/23317/2nd-annual-interpore-uk-chapter-conference

Conference

Conference2nd Annual Interpore UK Chapter Conference
CountryUnited Kingdom
CityLoughborough
Period5/09/166/09/16
Internet address

Fingerprint

tensiometers
suction
soils
pressure measurement
cavitation flow
occurrences
ceramics
diaphragms
entry
water
installing
time measurement
filters
air

Cite this

Bagheri, M., Rezania, M., & Mousavi Nezhad, M. (2016). On long-term direct measurement of suction in soft soils. Abstract from 2nd Annual Interpore UK Chapter Conference, Loughborough, United Kingdom.

On long-term direct measurement of suction in soft soils. / Bagheri, Meghdad; Rezania, Mohammad; Mousavi Nezhad, Mohaddeseh.

2016. Abstract from 2nd Annual Interpore UK Chapter Conference, Loughborough, United Kingdom.

Research output: Contribution to conferenceAbstract

Bagheri, M, Rezania, M & Mousavi Nezhad, M 2016, 'On long-term direct measurement of suction in soft soils' 2nd Annual Interpore UK Chapter Conference, Loughborough, United Kingdom, 5/09/16 - 6/09/16, .
Bagheri M, Rezania M, Mousavi Nezhad M. On long-term direct measurement of suction in soft soils. 2016. Abstract from 2nd Annual Interpore UK Chapter Conference, Loughborough, United Kingdom.
Bagheri, Meghdad ; Rezania, Mohammad ; Mousavi Nezhad, Mohaddeseh. / On long-term direct measurement of suction in soft soils. Abstract from 2nd Annual Interpore UK Chapter Conference, Loughborough, United Kingdom.
@conference{4afad224b96543a99b6440da19e51d82,
title = "On long-term direct measurement of suction in soft soils",
abstract = "High Capacity Tensiometers (HCTs) have recently received significant interest in laboratory measurements of soil suction mainly due to their fast response time, accurate measurements, and ease of transport and installation in geotechnical apparatuses. An HCT is typically comprised of a strain-gauged diaphragm for pressure measurement, a water reservoir and a high air-entry porous ceramic filter as the interface between the soil and the pressure measurement system. The major drawback of the HCTs is occurrence of cavitation in the water reservoir and the porous ceramic before pressure equalisation. Recent studies on the development of HCTs have focused on identifying experimental procedures for expanding the range and duration of suction measurements. In this work a new HCT is designed and constructed. In this design, a new technique is employed to account for the potential of cavitation occurrence during suction measurement. The functionality of the developed tensiometer is examined through a number of element level tests and it is shown that the newly designed HCTs are capable of providing an improved response, in both range and duration, for suction measurements.",
author = "Meghdad Bagheri and Mohammad Rezania and {Mousavi Nezhad}, Mohaddeseh",
year = "2016",
language = "English",
note = "2nd Annual Interpore UK Chapter Conference ; Conference date: 05-09-2016 Through 06-09-2016",
url = "http://www.rsc.org/events/detail/23317/2nd-annual-interpore-uk-chapter-conference",

}

TY - CONF

T1 - On long-term direct measurement of suction in soft soils

AU - Bagheri, Meghdad

AU - Rezania, Mohammad

AU - Mousavi Nezhad, Mohaddeseh

PY - 2016

Y1 - 2016

N2 - High Capacity Tensiometers (HCTs) have recently received significant interest in laboratory measurements of soil suction mainly due to their fast response time, accurate measurements, and ease of transport and installation in geotechnical apparatuses. An HCT is typically comprised of a strain-gauged diaphragm for pressure measurement, a water reservoir and a high air-entry porous ceramic filter as the interface between the soil and the pressure measurement system. The major drawback of the HCTs is occurrence of cavitation in the water reservoir and the porous ceramic before pressure equalisation. Recent studies on the development of HCTs have focused on identifying experimental procedures for expanding the range and duration of suction measurements. In this work a new HCT is designed and constructed. In this design, a new technique is employed to account for the potential of cavitation occurrence during suction measurement. The functionality of the developed tensiometer is examined through a number of element level tests and it is shown that the newly designed HCTs are capable of providing an improved response, in both range and duration, for suction measurements.

AB - High Capacity Tensiometers (HCTs) have recently received significant interest in laboratory measurements of soil suction mainly due to their fast response time, accurate measurements, and ease of transport and installation in geotechnical apparatuses. An HCT is typically comprised of a strain-gauged diaphragm for pressure measurement, a water reservoir and a high air-entry porous ceramic filter as the interface between the soil and the pressure measurement system. The major drawback of the HCTs is occurrence of cavitation in the water reservoir and the porous ceramic before pressure equalisation. Recent studies on the development of HCTs have focused on identifying experimental procedures for expanding the range and duration of suction measurements. In this work a new HCT is designed and constructed. In this design, a new technique is employed to account for the potential of cavitation occurrence during suction measurement. The functionality of the developed tensiometer is examined through a number of element level tests and it is shown that the newly designed HCTs are capable of providing an improved response, in both range and duration, for suction measurements.

M3 - Abstract

ER -