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Which material posed a hazard during construction of the Laerdal Tunnel...

This question belongs to Geological Engineering Case Studies And Applied Geological Engineering Projects
Case Studies and Applied Geological Engineering Projects
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Which material posed a hazard during construction of the Laerdal Tunnel in Norway?

Answer & Solution
Correct Answer: Option C
The Laerdal Tunnel passed through zones of swelling phyllite, which expanded upon water absorption, causing pressure on tunnel linings.
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