USING THE MARCHETTI DILATOMETER TO DETERMINE SOIL STIFFNESS PARAMETERS

Abstract

This study explores the transition from laboratory-based to field soil testing, focusing on the Marchetti flat dilatometer and its seismic counterpart for geotechnical applications. The study emphasises the challenges of obtaining undisturbed soil samples in field conditions while highlighting the advantages of integrating field measurements with advanced geotechnical analysis. Utilizing a combination of experimental, observational, and analytical methods, the study assesses soil stiffness parameters, transverse wave velocity, and associated geotechnical properties under both static and dynamic loads. The study’s findings underscore the versatility of the dilatometer and its seismic counterpart in characterizing a range of soil types, including those that are over-compacted and very soft. Key applications include foundation settlement prediction, quality control of compaction in road construction, and cyclic liquefaction resistance assessment. The results of the study establish significant correlations between soil parameters, which support sustainable construction practices and efficient soil reclamation in seismically active regions. This research underscores the utility of dilatometer technologies in advancing geotechnical investigations and fostering resilient infrastructure development.