Chapter
Apr 26, 2012
Case Study of EPS Geofoam Lightweight Fill for Settlement Control at Bridge Approach Embankment
Publication: Geotechnical Engineering for Transportation Projects
Abstract
Expanded Polystyrene Geofoam lightweight fill was used to mitigate settlement of bridge approach embankments constructed over compressible silty clay soils. Three settlement mitigation alternatives were considered: no mitigation measures; wick drains with surcharge; and EPS geofoam lightweight fill. Lightweight fill was selected in order to meet the very aggressive project schedule. The lightweight material was proportioned to limit post-construction differential settlements to 6 inches between the pile-supported bridge and earth-supported approach embankments, and to 3 inches or less from one side to the other of the 30-foot wide approach slab. An HDPE protective membrane system was installed to protect the geofoam from fuel spills. Settlements measured using conventional settlement platforms are compared to estimated settlements.
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© 2004 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Christopher L. Snow
P.E.
Senior Project Manager, GZA GeoEnvironmental, Portland, Maine
Charles R. Nickerson
P.E.
President, R.W. Gillespie & Associates, Saco, Maine
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.