Localization in Dutch Dune
Sand & Organic Clay

By Xiaohui Cheng
September 2004
Delft University Press
ISBN: 9040725101
107 pages, 6 ½" x 9 ½"
$59.50 Paper Original

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This is a Ph.D. dissertation. One of the challenging research puzzles in soil mechanics is the subject of strain localization. The investigation of the physico-chemical mechanisms and the conditions under which the strain will localize has been going on for more than a century. The focus of these studies was continuously adapted as new engineering problems occurred or new technologies became available.

The objective of the present study is to collect new laboratory evidence of strain localization in Dutch dune sand and organic clay with the emphasis on the application of novel laboratory techniques. In addition to mathematical aspects at the macro level the interdisciplinary knowledge of micro-geology and bio-geochemistry was incorporated in the micro-mechanical approach.

Contents include: Introduction, Experimentation and modeling of dilatancy and failure mechanism of sand in triaxial compression, Limit analysis (upper bound solutions) of failure mechanism of a cylindrical sand sample, Strain rate dependent behavior, material instability and localization of organic soft clay, Micro-deformation and unusual fabric of dutch organic clay, Distinct element modeling of fabric and properties of organic clay.

Civil Engineering

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