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Geosciences 2018, 8(1), 30; https://doi.org/10.3390/geosciences8010030

Preliminary Validation of a Novel Method for the Assessment of Effective Stress State in Partially Saturated Soils by Cone Penetration Tests

1
Department of Civil and Industrial Engineering, University of Pisa, 56 122 Pisa, Italy
2
Department of Earth and Environmental Sciences, University of Pavia, 27 100 Pavia, Italy
3
Department of Agricultural Sciences, University of Bologna, 40 126 Bologna, Italy
*
Author to whom correspondence should be addressed.
Received: 4 December 2017 / Revised: 8 January 2018 / Accepted: 16 January 2018 / Published: 19 January 2018
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Abstract

A proper assessment of the soil effective stress state is crucial in many cases to identify a potential geological/geotechnical hazard as shallow landslides or failure of levees that may have a significant impact on human activities and development. This paper is aimed at validating a methodology for the expeditious and economic determination of effective stress state in the vadose zone recently proposed by Lo Presti et al. in 2016. The method is based on the interpretation of cone penetration tests (CPTu). Its validation was carried out by comparing the CPTu predicted values of suction against the measured ones in a well-documented and monitored site. The comparison also includes the prediction of suction that was obtained by using the so-called Modified Kovacs model (MK). Moreover, additional data of water content and saturation degree from another site were used to predict the suction by using the MK model. These values of suction were compared with those inferred by the CPTu. View Full-Text
Keywords: partially saturated soil; suction; effective stress; cone penetration test partially saturated soil; suction; effective stress; cone penetration test
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Lo Presti, D.; Stacul, S.; Meisina, C.; Bordoni, M.; Bittelli, M. Preliminary Validation of a Novel Method for the Assessment of Effective Stress State in Partially Saturated Soils by Cone Penetration Tests. Geosciences 2018, 8, 30.

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