Development of a laboratory technique for obtaining Soil Water Retention Curves under external loading in conjunction with high capacity tensiometers

Kaine Lynch, Vinayagamoothy Sivakumar, Satya, N. Tripathy, David Hughes

Research output: Contribution to journalArticle

Abstract

This article reports the development of a testing chamber and an improved and reliable laboratory procedure, capable of establishing Soil Water Retention Curves (SWRCs) under triaxial stress conditions. The system provides the ability to take soil samples through multiple wetting-drying cycles in conjunction with measurements of suction and volumetric variables. Four drying and wetting tests were carried out on samples of glacial till and kaolin to validate the testing chamber and the associated procedures. Significant desaturation of soil samples were limited by the measurement capacity of the tensiometers. The system sustained high values of suction for a prolonged period of testing involving sequence of drying and wetting. Suction was generated by circulating less humid air through the middle of the soil sample which in effect generated suction gradients along the radial directions. Consequently, this had some impact on the interpretation of the volumetric variables.
Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalGeotechnique
Early online date08 Jun 2018
DOIs
Publication statusEarly online date - 08 Jun 2018

Fingerprint Dive into the research topics of 'Development of a laboratory technique for obtaining Soil Water Retention Curves under external loading in conjunction with high capacity tensiometers'. Together they form a unique fingerprint.

  • Cite this