Compressibility of fine-grained soils subjected to closed-system freezing and thaw consolidation

✍ Scribed by Ya-zhou ZOU; Conrad BOLEY

• Book ID: 104449152
• Publisher: Elsevier
• Year: 2009
• Tongue: English
• Weight: 515 KB
• Volume: 19
• Category: Article
• ISSN: 1674-5264
• DOI: 10.1016/s1674-5264(09)60117-4

✦ Synopsis

In order to investigate the effects of freezing and thawing on the compressibility of fine-grained soils, freezing and thawing tests and subsequent compression tests with fine-grained soils in an oedometer were carried out. During the freezing, a part of the soils is loosened and another part is over-consolidated under the freezing pressure σ E . The compression curves after the freezing and thaw consolidation are neither different from the normal consolidation curve nor from the rebound curve of an unfrozen soil, until the consolidation pressure σ z = σ E is arrived. Based on the experimental results, a theoretical model has been developed to predict the frost heaves, the thaw-settlements and the compressive deformations of fine-grained soils after the thaw consolidation. The theoretical results are very close to the experimental results.