GEOTECHNICAL PROPERTIES OF PAPER MILL SLUDGES FOR USE IN LANDFILL COVERS

Geotechnical properties of seven paper mill sludges are studied. A high water content and a high degree of compressibility characterize the paper mill sludges, which behave like highly organic soil. Consolidation tests show a large reduction in void ratio and high strain values that are attributed to the high compressibility. Triaxial shear-strength tests performed on remolded and undisturbed samples revealed variations in the strength parameters resulting from the differences in sludge composition. Laboratory permeability tests conducted on in-situ samples either met or nearly met the regulatory requirement for the permeability of a landfill cover. Over time, consolidation and dewatering of the paper sludge improved the permeability of cover. The sludge permeability was increased approximately one to two orders of magnitude from freezing and thawing cycles. Maximum permeability changes occurred within 10 freeze and thaw cycles.

Language

  • English

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 768-775
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00726914
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 3 1996 12:00AM