Cavitation in high-capacity tensiometers: effect of water reservoir surface roughness

Article


Bagheri, M., Rezania, M. and Mousavi-Nezhad, M. 2018. Cavitation in high-capacity tensiometers: effect of water reservoir surface roughness. Geotechnical Research. 5 (2), pp. 81-95. https://doi.org/10.1680/jgere.17.00016
AuthorsBagheri, M., Rezania, M. and Mousavi-Nezhad, M.
Abstract

High-capacity tensiometers (HCTs) are sensors made to measure negative pore water pressure (suction) directly. In
this paper, a new approach is proposed to expand the range and duration of suction measurements for a newly
designed HCT. A new technique is employed to reduce significantly the roughness of the diaphragm’s surface on the
water reservoir side in order to minimise the possibility of gas nuclei development and the subsequent early
cavitation at the water–diaphragm interface. The procedures employed for the design, fabrication, saturation and
calibration of the new tensiometers are explained in detail. Furthermore, the performance of the developed HCTs is
examined based on a series of experiments carried out on a number of unsaturated clay specimens. An improvement
in maximum sustainable suction in the range of 120–150% of their nominal capacity was obtained from different
surface treatment methods. Moreover, the results show an improvement of up to 177% for the long-term stability
of measurements, compared to the developed ordinary HCTs with untreated diaphragms.

Keywordsfield testing; monitoring geotechnical engineering strength; testing of materials
JournalGeotechnical Research
Journal citation5 (2), pp. 81-95
ISSN2052-6156
Year2018
PublisherICE Publishing
Publisher's version
License
File Access Level
Anyone
Digital Object Identifier (DOI)https://doi.org/10.1680/jgere.17.00016
Publication dates
Online18 Jun 2018
Publication process dates
Deposited01 Mar 2024
Copyright holder© 2018, The Authors
Permalink -

https://repository.uel.ac.uk/item/8x4xq

Download files


Publisher's version
Bagheri-GeotechRes-2018-Cavitation.pdf
License: CC BY 4.0
File access level: Anyone

  • 42
    total views
  • 4
    total downloads
  • 12
    views this month
  • 1
    downloads this month

Export as

Related outputs

Evaluation of delays in technical approval of UK Highways Act section 278 projects
Bagheri, M. and Bate, E. 2024. Evaluation of delays in technical approval of UK Highways Act section 278 projects. Journal of Strategic Contracting and Negotiation. In Press.
Thermal Creep and Stress Relaxation of London Clay
Sheridan, B., Bagheri, M. and Rezania, M. 2024. Thermal Creep and Stress Relaxation of London Clay. International Journal of Geomechanics. 24 (4). https://doi.org/10.1061/IJGNAI.GMENG-9074
Critical state parameters for a saturated lateritic clay
Akinniyi, D. and Bagheri, M. 2023. Critical state parameters for a saturated lateritic clay. ARC 2023: 17th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering. Astana, Kazakhstan 14 - 18 Aug 2023 CRC Press: Taylor & Francis Group. https://doi.org/10.1201/9781003299127
Reliability of HCT-based Soil Water Retention Curves
Bagheri, M., Matziaris, V. and Akinniyi, D. 2023. Reliability of HCT-based Soil Water Retention Curves. UNSAT 2023: 8th International Conference on Unsaturated Soils. Milos, Greece 02 - 05 May 2023 EDP Open. https://doi.org/10.1051/e3sconf/202338200001
Machine Learning-Based Estimation of Soil’s True Air-Entry Value from GSD Curves
Es-haghi, M. S., Rezania, M. and Bagheri, M. 2023. Machine Learning-Based Estimation of Soil’s True Air-Entry Value from GSD Curves . Gondwana Research. 123, pp. 280-292. https://doi.org/10.1016/j.gr.2022.06.012
Effect of Soil Moisture Evaporation Rate on Dynamic Measurement of Water Retention Curve with High-Capacity Tensiometer
Bagheri, M. and Rezania, M. 2022. Effect of Soil Moisture Evaporation Rate on Dynamic Measurement of Water Retention Curve with High-Capacity Tensiometer. International Journal of Geomechanics. 22 (3). https://doi.org/10.1061/(ASCE)GM.1943-5622.0002291
The combined effect of clay and moisture content on very small strain stiffness of compacted sand-clay mixture
Bagheri, M. and Matziaris, V. 2022. The combined effect of clay and moisture content on very small strain stiffness of compacted sand-clay mixture. ICSMGE 2022: 20th International Conference on Soil Mechanics and Geotechnical Engineering. Sydney, Australia 01 - 05 May 2022 Australian Geomechanics Society.
Geological and Geotechnical Characteristics of London Clay from the Isle of Sheppey
Bagheri, M. and Rezania, M. 2021. Geological and Geotechnical Characteristics of London Clay from the Isle of Sheppey. Geotechnical and Geological Engineering. 39, pp. 1701-1713. https://doi.org/10.1007/s10706-020-01572-3
A CRS Oedometer Cell for Unsaturated and Non-Isothermal Tests
Bagheri, M., Mousavi-Nezhad, M. and Rezania, M. 2020. A CRS Oedometer Cell for Unsaturated and Non-Isothermal Tests. Geotechnical Testing Journal. 43 (1), pp. 20-37. https://doi.org/10.1520/GTJ20180204
Creep and consolidation of a stiff clay under saturated and unsaturated conditions
Rezania, M., Bagheri, M. and Mousavi-Nezhad, M. 2020. Creep and consolidation of a stiff clay under saturated and unsaturated conditions. Canadian Geotechnical Journal. 57 (5), pp. 728-741. https://doi.org/10.1139/cgj-2018-0398
Rate Dependency and Stress Relaxation of Unsaturated Clays
Bagheri, M., Rezania, M. and Mousavi-Nezhad, M. 2019. Rate Dependency and Stress Relaxation of Unsaturated Clays. International Journal of Geomechanics. 19 (12). https://doi.org/10.1061/(ASCE)GM.1943-5622.0001507
One-dimensional creep of unsaturated soft soils
Bagheri, M. 2017. One-dimensional creep of unsaturated soft soils. 3rd UK InterPore Conference on Porous Media and the 1st Monash-Warwick PREFRAC Workshop on Hydraulic Fracturing. University of Warwick, UK, 04 - 05 Sep 2017
Uncertainty of suction measurement with tensiometers
Bagheri, M. 2017. Uncertainty of suction measurement with tensiometers. InterPore 2017: 9th International Conference on Porous Media & Annual Meeting. Rotterdam, Netherlands 08 - 11 May 2017
Creep analysis of an earth embankment on soft soil deposit with and without PVD improvement
Rezania, M., Bagheri, M., Mousavi-Nezhad, M. and Sivasithamparam, N. 2017. Creep analysis of an earth embankment on soft soil deposit with and without PVD improvement. Geotextiles and Geomembranes. 45 (5), pp. 537-547. https://doi.org/10.1016/j.geotexmem.2017.07.004
On long-term direct measurement of suction in soft soils
Bagheri, M., Rezania, M. and Mousavi-Nezhad, M. 2016. On long-term direct measurement of suction in soft soils. 2nd Annual InterPore UK Chapter Conference. Loughborough, United Kingdom 05 - 06 Sep 2016
An experimental investigation of the independent effect of suction and degree of saturation on very small-strain stiffness of unsaturated sand
Pagano, A., Tarantino, A., Bagheri, M., Rezania, M. and Sentenac, P. 2016. An experimental investigation of the independent effect of suction and degree of saturation on very small-strain stiffness of unsaturated sand. E-UNSAT 2016: 3rd European Conference on Unsaturated Soils. Paris, France 12 - 14 Sep 2016 EDP Open. https://doi.org/10.1051/e3sconf/20160914015
An experimental study of the initial volumetric strain rate effect on the creep behaviour of reconstituted clays
Bagheri, M., Rezania, M. and Mousavi-Nezhad, M. 2015. An experimental study of the initial volumetric strain rate effect on the creep behaviour of reconstituted clays. ISGG 2015: International Symposium on Geohazards and Geomechanics. Warwick, UK 10 - 11 Sep 2015 IOP Publishing. https://doi.org/10.1088/1755-1315/26/1/012034
CO2 sequestration in unsaturated superficial soils
Bagheri, M. 2013. CO2 sequestration in unsaturated superficial soils. Infrastructure and Environment Scotland 1st Postgraduate Conference. Edinburgh, UK 2013 - 2014