Location

Arlington, Virginia

Session Start Date

8-11-2008

Session End Date

8-16-2008

Abstract

Since the early 1990’s till early 2000s, the Changi East Reclamation Project in the Republic of Singapore involved the filling of approximately 200 million cubic meters of sand for the reclamation of a total land area of about 2500 hectares. The land reclamation works were carried out in 5 phases. The edges of the newly reclaimed land in the project were either retained by vertical retaining structure or coastal shore protection rock bund with suitable slopes and berms. Land reclamation was carried out using fill materials derived from dredging granular material from the seabed at the borrow source. Prefabricated vertical drains with surcharge were used extensively in the project to accelerate the consolidation process. In addition, deep sand compaction of the hydraulically placed sandfill was carried out by various deep compaction methods. Geotechnical instruments were required to monitor the settlement and pore pressure dissipation of the improved soft soil. During the implementation of the 5 phases of land reclamation and soil improvement projects, several thousand geotechnical instruments of various types were installed. In-situ testing of the marine clay was carried out prior to reclamation a well as after soil improvement. In-situ testing of the marine clay was carried out by means of field vane shear, self boring pressuremeter, cone penetration test and dilatometer tests. This paper provides a case study into the land reclamation, ground improvement, field instrumentation, in-situ testing and deep sand compaction works that were carried out in the Changi East Reclamation Project.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Sixth Conference

Publisher

Missouri University of Science and Technology

Publication Date

8-11-2008

Document Version

Final Version

Rights

© 2008 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Case Study of the Changi East Land Reclamation Project, Singapore

Arlington, Virginia

Since the early 1990’s till early 2000s, the Changi East Reclamation Project in the Republic of Singapore involved the filling of approximately 200 million cubic meters of sand for the reclamation of a total land area of about 2500 hectares. The land reclamation works were carried out in 5 phases. The edges of the newly reclaimed land in the project were either retained by vertical retaining structure or coastal shore protection rock bund with suitable slopes and berms. Land reclamation was carried out using fill materials derived from dredging granular material from the seabed at the borrow source. Prefabricated vertical drains with surcharge were used extensively in the project to accelerate the consolidation process. In addition, deep sand compaction of the hydraulically placed sandfill was carried out by various deep compaction methods. Geotechnical instruments were required to monitor the settlement and pore pressure dissipation of the improved soft soil. During the implementation of the 5 phases of land reclamation and soil improvement projects, several thousand geotechnical instruments of various types were installed. In-situ testing of the marine clay was carried out prior to reclamation a well as after soil improvement. In-situ testing of the marine clay was carried out by means of field vane shear, self boring pressuremeter, cone penetration test and dilatometer tests. This paper provides a case study into the land reclamation, ground improvement, field instrumentation, in-situ testing and deep sand compaction works that were carried out in the Changi East Reclamation Project.