Frozen soil is a multi-phases system composed of mineral particles, ice, unfrozen water and gas. Due to the existence of ice, several factors a ect frozen soil properties (e.g., pressure, temperature, salinity, etc..). Mechanical and deformation behaviour of frozen soil is not completely clear. A better understanding of physical frozen soil properties and of its freezing process are needed to improve the prediction of frozen soil deformation characteristics. This has application in aged cold region engineering problems such as the Frost heave but also in new issues of the modern era related to the Artificial Ground technique and to Global warming, since the recorded increasing creep settlements.