Unit Weight Determination of Landfill Waste Using Sonic Drilling Methods
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 133, Issue 5
Abstract
The total unit weight of waste in a landfill, up to thick, was estimated based on tube samples taken from borings made using sonic drilling technology. The waste’s unit weight was needed for input into slope stability calculations, which were part of the landfill’s closure design. The sonic drill was capable of penetrating and obtaining samples of all types of materials in the landfill. No significant correlation of waste unit weight, with depth, was found. Instead, the waste samples’ constituents were observed to have the greatest effect on their unit weights. The site also offered the unique opportunity to back-calculate the waste’s overall unit weight using a numerical model, and knowledge of the in situ stresses in the underlying clay as determined by oedometer testing. These calculations indicated that samples taken, using sonic drilling, gave a good a approximation of the waste’s overall unit weight at each boring location.
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Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 133 • Issue 5 • May 2007
Pages: 609 - 612
Copyright
© 2007 ASCE.
History
Received: Jan 17, 2006
Accepted: Nov 29, 2006
Published online: May 1, 2007
Published in print: May 2007
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