Compaction of Subgrade by High-Energy Impact Rollers on an Airport Runway
Publication: Journal of Performance of Constructed Facilities
Volume 28, Issue 5
Abstract
High-energy impact rollers (IR) have been increasingly used for earthworks by compacting on-site soils. The IR applies high energy to the ground and densifies deeper soils than conventional rollers and plate-type compactors. A trial program was implemented on the third runway of the Shanghai Pudong International Airport in China to validate the performance of the IR technology. Field monitoring and in-situ testing were undertaken during or after the IR compaction. The cone penetration data indicated that significant improvement in soil properties was measured up to a depth of 4 m after 20 to 25 passes of compaction. However, the improvement of the properties of the very soft silty clay at the depth of 1–2 m was limited. The vibration monitoring data suggested that the IR compaction with 12-t impact module would not cause damage to buildings at a distance of 9.5 m away from the boundary of the compaction path.
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Acknowledgments
The authors are heartily grateful to Prof. Jie Han for his valuable suggestions during the preparation of this paper. The authors also would like to extend their appreciation to the Shanghai Geotechnical Investigations and Design Institute for the cooperation during this trial program. The support from the Key Discipline Construction Program of Shanghai (No. B308) and Jiangsu traffic scientific research projects (No. 09Y03) are also appreciated.
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Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 28 • Issue 5 • October 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Mar 26, 2012
Accepted: Apr 22, 2013
Published online: Apr 23, 2013
Published in print: Oct 1, 2014
Discussion open until: Oct 30, 2014
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