The influence of weathering on index properties and undrained shear strength for the Charmouth Mudstone Formation of the Lias Group at a site near Banbury, Oxfordshire, UK
The influence of weathering on index properties and undrained shear strength for the Charmouth Mudstone Formation of the Lias Group at a site near Banbury, Oxfordshire, UK
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.
Briggs, Kevin M.
8974f7ce-2757-4481-9dbc-07510b416de4
Blackmore, Letisha
fe6fec65-47d0-4554-b3cb-6f2b746a8306
Svalova, Aleksandra
50b5c1ba-891b-4696-a088-d46e84a7a9b0
Loveridge, Fleur A.
628a1b59-d131-47fd-9b2a-e9baf6e80e3d
Glendinning, Stephanie
c0be9556-3210-4794-a36b-a483258a4b45
Powrie, William
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Butler, Simon
f3fb723e-5a1c-4bd6-9a84-a7e0bed03adc
Sartain, Nick
f11351ef-d9c0-4c08-ac7c-c69846ce1e44
16 March 2022
Briggs, Kevin M.
8974f7ce-2757-4481-9dbc-07510b416de4
Blackmore, Letisha
fe6fec65-47d0-4554-b3cb-6f2b746a8306
Svalova, Aleksandra
50b5c1ba-891b-4696-a088-d46e84a7a9b0
Loveridge, Fleur A.
628a1b59-d131-47fd-9b2a-e9baf6e80e3d
Glendinning, Stephanie
c0be9556-3210-4794-a36b-a483258a4b45
Powrie, William
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Butler, Simon
f3fb723e-5a1c-4bd6-9a84-a7e0bed03adc
Sartain, Nick
f11351ef-d9c0-4c08-ac7c-c69846ce1e44
Briggs, Kevin M., Blackmore, Letisha, Svalova, Aleksandra, Loveridge, Fleur A., Glendinning, Stephanie, Powrie, William, Butler, Simon and Sartain, Nick
(2022)
The influence of weathering on index properties and undrained shear strength for the Charmouth Mudstone Formation of the Lias Group at a site near Banbury, Oxfordshire, UK.
Quarterly Journal of Engineering Geology and Hydrogeology.
(doi:10.1144/qjegh2021-066).
Abstract
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.
Text
qjegh2021-066
- Version of Record
More information
Accepted/In Press date: 24 January 2022
e-pub ahead of print date: 24 February 2022
Published date: 16 March 2022
Identifiers
Local EPrints ID: 492197
URI: http://eprints.soton.ac.uk/id/eprint/492197
ISSN: 1470-9236
PURE UUID: 67db20c9-b1fb-4f1e-9852-7ce3dfbc3339
Catalogue record
Date deposited: 19 Jul 2024 16:54
Last modified: 20 Jul 2024 01:43
Export record
Altmetrics
Contributors
Author:
Kevin M. Briggs
Author:
Letisha Blackmore
Author:
Aleksandra Svalova
Author:
Fleur A. Loveridge
Author:
Stephanie Glendinning
Author:
Simon Butler
Author:
Nick Sartain
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics