CPT-based unit weight estimation extended to soft organic clays and peat - an update
H.J. Lengkeek (TU Delft - Hydraulic Structures and Flood Risk, Witteveen+Bos)
R.B.J. Brinkgreve (TU Delft - Geo-engineering, Bentley Systems)
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Abstract
Various CPT-based correlations exist for the unit weight of natural soils. One such correlation includes organic soils Lengkeek et al. (2018). This correlation is presented as a framework where the coefficients can be optimized and is based on predominantly Class 2 CPT records. This publication uses an expanded database which includes additional pairs of predominantly Class 1 CPT records selected from Holocene deposits in the Netherlands, on mineral clays, organic clays and peats. This results in a more extensive database and an improved CPT-based unit weight correlation for the whole range of soil types, which is proposed to replace the existing correlation. In addition, a specific unit weight correlation for peats is presented.
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