doi:10.3850/GI099

ABSTRACT

The paper presents two different compaction techniques used on the Port Botany Expansion Project in Sydney- Australia: Deep Dynamic Compaction and Vibroflotation. The Expansion Project relied on the reclamation of 63 hectares of land within the Botany Bay to create a new container terminal and required geotechnical works to densify the reclaimed fine sandy materials as well as bands of insitu geotechnical units rich in fines and clayey particles. Whilst treatment of homogeneous geotechnical profiles has received great attention the implication for both Dynamic Compaction and Vibroflotation of geotechnical variability has been seldom studied and requires further analysis. The execution of hundreds of geotechnical testing pre and post treatment on the Port Botany site will provide an opportunity to assess the relevance of historical approaches in the dimensioning of such soil improvement techniques.

Keywords: Dynamic Compaction; Vibroflotation; Energy Transfer; Seismic wave; Cone Penetrometer Test; Relative Density; Dredging; Reclaimed Land.

© 2010 by Geotechnical Society of Singapore (GeoSS)