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Lookup NU author(s): Dr Aleksandra Svalova, Professor Stephanie Glendinning
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2022 The Author(s). The Lias outcrop extends continuously from Dorset to Yorkshire in England, with outlying areas in Somerset and Wales. It underlies the transport routes between a number of major UK cities. Understanding the material properties of the Lias Group is therefore important for infrastructure construction and maintenance across England and Wales. This study examines the influence of weathering on the engineering properties of the Charmouth Mudstone Formation (Lias Group) in light of recent developments in ground-investigation practice including: (i) the use of modern visual weathering classifications for soils and rocks; and (ii) the availability of large ground-investigation datasets from the construction of the High Speed Two (HS2) railway. The variability in the undrained shear strength data was consistent with the moisture content, liquidity index and plasticity index of the samples, but they were poorer indicators than shown in previous studies. The visually-assessed weathering class and the depth below ground level were found to be more useful indicators of the undrained shear strength of the clay and mudstone samples of the Charmouth Mudstone Formation.
Author(s): Briggs KM, Blackmore L, Svalova A, Loveridge FA, Glendinning S, Powrie W, Butler S, Sartain N
Publication type: Article
Publication status: Published
Journal: Quarterly Journal of Engineering Geology and Hydrogeology
Year: 2022
Volume: 55
Issue: 3
Online publication date: 24/02/2022
Acceptance date: 24/01/2022
Date deposited: 27/02/2023
ISSN (print): 1470-9236
ISSN (electronic): 2041-4803
Publisher: Geological Society of London
URL: https://doi.org/10.1144/qjegh2021-066
DOI: 10.1144/qjegh2021-066
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