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Expansive soils, which contain the clay mineral montmorillonite, are a worldwide problem and occur in many parts of the world. Some cutting slopes at Yanji along the Jilin-Tumen-Hunchun high-speed railway in Northeast China as typical seasonally frozen region consist of expansive soils. The mechanical and microstructural properties of these soils subjected to periodic freeze-thaw (F-T) cycles may...
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