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CLC number: TU311

On-line Access: 2011-01-06

Received: 2010-10-08

Revision Accepted: 2010-11-05

Crosschecked: 2010-12-07

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Journal of Zhejiang University SCIENCE A 2011 Vol.12 No.1 P.1-14


Characterization of mudrocks: a practical application of advanced laboratory testing

Author(s):  Richard J. Jardine

Affiliation(s):  Department of Civil and Environmental Engineering, Imperial College London, London SW7 2AZ, UK

Corresponding email(s):   r.jardine@imperial.ac.uk

Key Words:  Mudrock, Fabric, Anisotropy, Hollow cylinder tests

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Richard J. Jardine. Characterization of mudrocks: a practical application of advanced laboratory testing[J]. Journal of Zhejiang University Science A, 2011, 12(1): 1-14.

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An integrated approach to geomaterial characterization is advocated that combines geology, in-situ testing, fabric studies, routine index experiments and advanced laboratory testing. It is shown that advanced laboratory testing can explore features such as kinematic yielding and anisotropy in stiffness or shear strength that would otherwise be impossible to quantify. A detailed study performed in London clay at the new Heathrow Terminal 5 site is used to illustrate the arguments made. It is shown that the London clay has strong anisotropy in stiffness, is highly non-linear over the strain range of engineering interest, has markedly anisotropic shear strength characteristics and exhibits a pronounced degree of brittleness. These features can impact significantly on the practical design and analysis of civil engineering works including shallow and deep foundations, tunnels and excavations, and the stability of slopes.

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