Microanalysis of Deformation of Soil

Abstract

Prediction of the behavior of soil Subject to a wide range of stresses is of interest in the design of Air Force strategic and tactical facilities and requires accurate determination of the soil properties for the environmental conditions under consideration. This study helps to link behavior and environment through the microstructure. New methods of image analysis were developed for electron + optical microscopy. These showed the micromechanics of deformation to be more complicated than had been imagined. Initially, all samples had horizontal preferred orientation. In drained and undrained normally- consolidated kaolin: from 0-8% strain, the specimens appeared to bed down with increased strength of anisotropy; from 8-16% strain, this tendency appeared to reverse; at about 16% strain, failure planes developed non-conformably. In over- consolidated kaolin: from 0-8% strain, there appeared to be slight bedding down, followed at once by non-conformable development of failure planes.

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Document Details

Document Type
Technical Report
Publication Date
Jun 24, 1993
Accession Number
ADA271870

Entities

People

  • Mark W. Hounslow
  • N. K. Tovey
  • Peter Smart
  • Xiaohong Bai
  • Xiaoling Leng

Organizations

  • University of Glasgow

Tags

Communities of Interest

  • Engineered Resilient Systems

DTIC Thesaurus Topics

  • Algorithms
  • Civil Engineering
  • Electrical Engineering
  • Electron Microscopes
  • Electron Microscopy
  • Image Processing
  • Materials
  • Measurement
  • Microscopes
  • Microscopy
  • Moisture Content
  • Optical Properties
  • Orientation (Direction)
  • Pressure Measurement
  • Scanning Electron Microscopes
  • Scanning Electron Microscopy
  • Waveplates

Readers

  • Geotechnical Engineering.
  • Materials Science (Mechanical Engineering).
  • Mechanical Engineering/Mechanics of Materials.

Technology Areas

  • Microelectronics