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Characterization of mudrocks: a practical application of advanced laboratory testing

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Abstract

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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Authors and Affiliations

  1. Department of Civil and Environmental Engineering, Imperial College London, London, SW7 2AZ, UK

    Richard J. Jardine

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  1. Richard J. Jardine
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Correspondence to Richard J. Jardine.

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Project supported by the UK Engineering and Physical Sciences Research Council (EPSRC), the British Airports Authority (BAA), and the London Underground Limited (LUL), UK

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Jardine, R.J. Characterization of mudrocks: a practical application of advanced laboratory testing. J. Zhejiang Univ. Sci. A 12, 1–14 (2011). https://doi.org/10.1631/jzus.A1000420

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