CASE STUDY OF EPS GEOFOAM LIGHTWEIGHT FILL FOR SETTLEMENT CONTROL AT BRIDGE APPROACH EMBANKMENT

Expanded Polystrene 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 proportional 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 were measured using conventional settlement platforms are compared to estimated settlements.

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  • English

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Filing Info

  • Accession Number: 00987949
  • Record Type: Publication
  • ISBN: 0784407444
  • Report/Paper Numbers: Volume 1
  • Files: TRIS
  • Created Date: Mar 23 2005 12:00AM