Struktur-Untersuchung überkonsolidierter Tone mit dem Raster-Kraftmikroskop (AFM)

Translated title of the contribution: Texture of overconsolidated clays with the Atomic Force Microscope AFM

Peter Schick, Andre Kempe, Oliver Wedderer, Wolfgang Heckl

Research output: Contribution to specialist publicationArticle


Preloaded fine-grained soils show different mechanical properties dependent on soil history and especially geological loading and sample orientation. For characterization of soil structure, the generally used terms "void ratio" and "effective stress" are not sufficient, because they describe averaged macroscopic values. The same applies for derived quantities as for example the overconsolidation ratio. To obtain fundamental data for detailed description of particle- and pore-structure, recordings by different visualizing techniques were made with two high plastic clays and were analysed quantitatively. For comparison, images were taken by a scanning electron microscope (REM) and an optical microscope (LM). Mainly the Atomic Force Microscope (AFM) was used, which is a powerful tool for surface analysis on nanometer scale since the 1980s. The insights will improve micromechanic models of water bonding in soils, where the AFM method in the field of soil mechanics still offers further possibilities.

Translated title of the contributionTexture of overconsolidated clays with the Atomic Force Microscope AFM
Original languageGerman
Number of pages8
Specialist publicationBautechnik
StatePublished - Sep 2003
Externally publishedYes


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