Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/14705
Title: Application of a radioisotope cone penetrometer to characterize a lumpy fill
Authors: MUTHUSAMY KARTHIKEYAN
Keywords: in-situ characterization, land reclamation, radioisotope cone penetration tests, wet density, big clay lumps, inter-lump voids
Issue Date: 12-May-2005
Source: MUTHUSAMY KARTHIKEYAN (2005-05-12). Application of a radioisotope cone penetrometer to characterize a lumpy fill. ScholarBank@NUS Repository.
Abstract: Dredging works in sea and excavations in urban areas produce large quantities of clay lumps. Use of these clay lumps for land reclamation is an environmental friendly option. This thesis addresses the in-situ characterization of lumpy fill using Radioisotope Cone Penetrometers, which are capable of measuring the density and water content in addition to usual cone parameters. The research is accomplished in two phases: Phase A deals with issues related to the use of radioisotope cone penetrometer to characterize highly heterogeneous lumpy fill, while Phase B deals with case studies and lessons learnt from the application of radioisotope cone penetrometers in a reclamation project using lumpy fill. Experimental investigations were carried out to investigate the issues related to the use of a Nuclear-Density cone penetrometer (ND-CPT) for characterization of a lumpy fill. An extensive site investigation was performed at a test site on the island of Pulau Tekong in Singapore where dredged clay lumps were used as fill materials. The thrust of this investigation was to evaluate the in-situ state of the lumpy fill at different stages of land reclamation works. The layer formed from dredged clay lumps contained both compact and less compact zones. Problems faced in marine based investigations were also identified and resolved. Finally, a case study on the ultimate state of a reclaimed land constructed using big clay lumps was also presented.
URI: http://scholarbank.nus.edu.sg/handle/10635/14705
Appears in Collections:Ph.D Theses (Open)

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