What is it about?

The Soil-Water Retention Curve (SWRC) is an important descriptor of unsaturated soil behavior. It relates the magnitude of soil suction to the amount of water in a soil. We have applied the emerging development of high-capacity soil suction measurement devices, called tensiometers, to a simple method for determining the SWRCs of 5 various course and fine-grained soils. The addition of shrinkage measurement of specimens allows for full characterization of the SWRCs in a repeatable way.

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Why is it important?

Research on unsaturated soils remains difficult and expensive, often requiring expensive and time consuming testing. Using the emerging development of high-capacity tensiometers to easily measure high values of soil suctions, research opportunities can be opened up. The practical and cost effective method of determining soil-water retention curves proposed will be a beneficial building block to expand research and practical implication of the unsaturated soil mechanics field.

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This page is a summary of: Performance of the Tensiometer Method for the Determination of Soil-Water Retention Curves in Various Soils, Geotechnical Testing Journal, February 2021, ASTM International,
DOI: 10.1520/gtj20200196.
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