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2015 | OriginalPaper | Chapter

146. An Innovative Method to Evaluate Degree of Compaction of River Embankments

Authors : Barbara Cosanti, Diego C. F. Lo Presti, Nunziante Squeglia

Published in: Engineering Geology for Society and Territory - Volume 2

Publisher: Springer International Publishing

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Abstract

The paper illustrates an innovative method to evaluate the degree of compaction of both existing and new river embankments after their completion. A tip resistance target—profile is inferred from laboratory tests in a mini calibration chamber (CC) using a mini CPT (cone penetration test). The “laboratory” tip resistance (qcLAB) is expressed as a function of the expected density and of the vertical—horizontal stress components. Such a dependence of qcLAB is obtained carrying out a number of repeated tests in the CC at given density and different consolidation stresses. In situ stresses are inferred by combining DMT (Marchetti Dilatomer) results and an estimate of the vertical stress component. A comparison between the qcLAB profile, from CC testing, and the qc, as inferred from in situ CPT, gives the possibility of assessing the density of existing embankments, while, for new embankments, the method defines the expected in situ qc for a given target density.

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Metadata
Title
An Innovative Method to Evaluate Degree of Compaction of River Embankments
Authors
Barbara Cosanti
Diego C. F. Lo Presti
Nunziante Squeglia
Copyright Year
2015
DOI
https://doi.org/10.1007/978-3-319-09057-3_146