Abstract
Ramsey and Tho (2024) illustrated the ability of the I<sub>pzo</sub> parameter to estimate Plasticity Index in a wide range of saturated natural soils and highlighted the potential of the I<sub>pzo</sub> parameter for improving the reliability of estimations of other soil properties affected by Plasticity Index. In this note, an improved method is proposed for estimating undrained shear strength in clay-like soils using CPTU data, where clay-like is defined as I<sub>pzo</sub> ≥12%. The improved method is validated using a geographically and geologically diverse “N<sub>kt1</sub>-database” comprising 54 anisotropically consolidated undrained triaxial compression (CAUc) tests, with complementary CPTU measurements from 36 geological units at 18 globally distributed marine sites
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