Controlled Permeation Grouting Method for Mitigation of Liquefaction
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 142, Issue 11
Abstract
The application of silica stabilizers to a liquefiable ground covered by existing structures is a challenge to engineers. This paper provides details of ground improvement under the runway and around the common ducts of Fukuoka International Airport. The ground was improved via a newly developed controlled curved drilling machine to enable controlled permeation grouting under the runway without any disturbance to its operation. At this stage approximately 100 m of the runway has been improved. Experiments on the gel time and the form of chemical diffusion at different injection times secured the improvement of ground in the desired zone, and a posttreatment investigation confirmed this improvement.
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Acknowledgments
The authors gratefully acknowledge the support and encouragement of Mr. Makoto Morihashi of the Kyushu Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism (MLIT). The authors’ sincere thanks go also to Mr. Osamu Iriyama and Mr. Atsushi Miyake of Raito Kogyo Co., Ltd., for their esteemed contributions to this practical study.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 142 • Issue 11 • November 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jun 3, 2015
Accepted: Mar 4, 2016
Published online: Jun 9, 2016
Published in print: Nov 1, 2016
Discussion open until: Nov 9, 2016
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