Improved Vacuum Preloading Method for Consolidation of Dredged Clay-Slurry Fill
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 142, Issue 11
Abstract
An improved vacuum preloading method was developed to consolidate clay-slurry fill that is hydraulically placed in seawater for land reclamation. This method adopted both a vacuum and an air-pressurizing system. In the vacuum system, a new connector to connect each prefabricated vertical drain (PVD) directly to a horizontal vacuum pipe is used in lieu of a horizontal sand blanket. In the air-pressurizing system, compressed air is injected into the soil to accelerate consolidation. Field pilot tests using both the improved and the existing vacuum preloading systems were carried out at the same site. The testing data showed that better consolidation results were achieved using the improved vacuum preloading method.
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Acknowledgments
The work presented is supported by the National Nature Science Foundation of China (No. 51278383, No. 51238009, No. 51478365, No. 51408440, and No. 51025827), the Key Scientific and Technological Innovation Team of Zhejiang (No. 2011R50020), and the Key Scientific and Technological Innovation Team of Wenzhou (No. C20120006). These financial supports are gratefully acknowledged. The collaboration between Wenzhou University, Iowa State University, and the Center of Usable Space, Nanyang Technological University (Singapore) is also acknowledged.
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Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 142 • Issue 11 • November 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Dec 16, 2014
Accepted: Feb 4, 2016
Published online: Jun 17, 2016
Published in print: Nov 1, 2016
Discussion open until: Nov 17, 2016
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