FLY ASH FILLS A VALLEY

Filling a valley with fly ash and containing it with a geotextile-aggregate blanket, help cut construction costs on a Pennsylvania highway project. The Pennsylvania Department of Transport placed nearly 400,000 tons of fly ash (waste from coal-fired power plants) in a structural fill along I-279. Geotextiles were used extensively to allay environmental concerns about the use of fly ash and lime stabilized scrubber sludges as fill for constrction projects. A geotextile-aggregate blanket underdrain spans the full width of the valley for the 1,200 feet length of the fill. The drain consists of 9,500 cubic yards of No. 57 gravel sandwiched between 104,500 sq yard of needle punched nonwoven fabric. Groundwater infiltration and stormwater runoff controls were prime considerations both during and after construction. Details of the project are summarized.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/10480594
• Corporate Authors:

  Morgan-Grampian (Construction Press) Limited

  Morgan-Grampian House, 30 Calderwood Street
  London SE18 6QH,   England 
• Authors:
  • Turgeon, R
• Publication Date: 1988-12

Media Info

• Features: Figures;
• Pagination: p. 67-68
• Serial:
  • Civil Engineering
  • Publisher: American Society of Civil Engineers
  • ISSN: 0885-7024
  • Serial URL: http://www.pubs.asce.org/ceonline/newce/html

Subject/Index Terms

• TRT Terms: Aggregates; Drainage; Environmental protection; Fly ash; Geotextiles; Groundwater; Nonwoven textiles; Subdrains
• Old TRIS Terms: Blanket
• Subject Areas: Construction; Environment; Geotechnology; Highways; Hydraulics and Hydrology; Materials; I35: Miscellaneous Materials;

Filing Info

• Accession Number: 00477977
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 31 1988 12:00AM