Dynamic Compaction of Landfill Beneath Embankmentby Paul J. Lewis, Gannett Fleming, Inc, Harrisburg, United States,
James A. Langer, (M.ASCE), Gannett Fleming, Inc, Harrisburg, United States,
Abstract: This paper presents the results of a highway project where dynamic compaction was used to densify a closed landfill prior to constructing highway embankments over the landfill. The purpose of the compaction was to limit post-construction settlement to acceptable amounts. In addition to dynamic compaction, a surcharge/preload embankment was used over a portion of one embankment as an alternative soil improvement technique. The use of two methods on adjacent embankment sections provided a limited amount of data for comparison of the effectiveness of the two methods. Elevation measurements, taken at the time of construction and post-construction (4 years after construction) are presented for comparison and evaluation of the effectiveness of the two methods.
Subject Headings: Soil settlement | Embankment (transportation) | Compacted soils | Infrastructure construction | Landfills | Soil stabilization | Construction methods
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