Geotechnical properties of British estuarine clays: Towards a geological framework

M. A. Paul, B. F. Barras, J. E. Mein

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    This paper examines the geotechnical architecture of Holocene estuarine clays from differing settings in the UK and proposes a geological framework within which these can be understood. Within this framework we identify as significant the depositional elevation, elevational changes after deposition, organic productivity and local palaeogeography. Relative to the tidal frame, depositional elevation determines the level of geotechnical structure through microfabric and particle packing. This is expressed via the position of the ambient void index relative to the sedimentation and intrinsic compression lines and by the consequent geotechnical properties. Estuarine productivity controls the organic component, which, in conjunction with cation chemistry, modifies plasticity and yield behaviour. The combined geotechnical effect of these geochemical factors is described for any soil by a novel concept we term the synergistic influence surface. We illustrate this framework using data from the Forth and Number estuaries, together with a review of published data from the Severn and Belfast. We consider this framework to be applicable to Holocene estuarine deposits in other glaciated regions.

    Original languageEnglish
    Title of host publicationAdvances in Geotechnical Engineering: The Skempton Conference - Proceedings of a Three Day Conference on Advances in Geotechnical Engineering, organised by the Institution of Civil Engineers
    Pages568-579
    Number of pages12
    Publication statusPublished - 2004
    EventAdvances in Geotechnical Engineering: The Skempton Conference - London, United Kingdom
    Duration: 29 Mar 200431 Mar 2004

    Conference

    ConferenceAdvances in Geotechnical Engineering: The Skempton Conference
    CountryUnited Kingdom
    CityLondon
    Period29/03/0431/03/04

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