Abstract:Geological formations containing sulphates are commonly associated with the development of severe expansions when they are involved in tunnel excavation. The intensity of the observed expansive behaviour in these materials is greater than in other expansive soils and rocks free of sulphates. Swelling in sulphated formations can also occur in the rock mass although no tunnel is excavated, and also within fills made of compacted material from excavations in sulphated rocks. The functionality and stability of eng… Show more
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