INVESTIGATION OF THE FABRIC OF ENGINEERING SOIL USING HIGH RESOLUTION X-RAY DENSIMETRY

This paper presents two case studies which illustrate the use of high-resolution densimetry for the non-destructive investigation of the fabric of natural sediments. Almost 100m of core samples were examined from the coastal and offshore areas of Scotland. In the first example, the sediments included Late Devensian sandy silts and muds, which accumulated by various slope processes on the continental margin, west of the Shetland Islands, and allowed a comparison of the density signatures between gross facies types. In the second example, they were Holocene estuarine mudflats at the Bothkennar research site near the head of the Firth of Forth, in which densimetry helped the recognition and very detailed description of the engineering facies. Both examples showed the possibility of using X-ray densimetry to establish quantitatively the detailed pattern of density variation within a sediment core at the millimetre scale. The results were found to compare well with those from conventional methods that are often used for classification. In each example, X-ray densimetry provided additional information, which assisted the description and evaluation of geological samples and other site investigation data. For the covering abstract see IRRD 883023.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 805-15

Subject/Index Terms

Filing Info

  • Accession Number: 00729300
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-7277-2513-0
  • Files: ITRD
  • Created Date: Dec 12 1996 12:00AM