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I am interested in exploration on swelling behaviour of anhydrite in underground openings.I recognize that the laboratory tests lead to conservative derivation of the swelling parameters for the modelling of the swelling law, so besides of the laboratory tests i have to carry out a in-situ monitoring program for the calibration and validation of this swelling law.At this moment the anhydrite is ecountered in dry conditions mixed with gypsum and polyhalite.Any suggestions (and references)for the in situ monitoring and measurement program?
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Subject:
swelling rock 
