A process for the determined by means of freeze samples of the in situ in front of the freeze-drying process present characteristic numbers density, water content, air pores proportion and saturation number of water-saturated regions cohesion loose soils

摘要

A process for the determined by means of freeze samples of the in situ in front of the freeze-drying process present characteristic numbers density, water content, air pores proportion and saturation number of water-saturated regions cohesion loose soils,the temperature t._Mountain the bottom in front of the freezing of the freeze-drying of sample is measured and the temperature t_{Ice, freezing} during the freezing is measured, and after freezing process of the bottom region of the freeze-drying of sample is taken and the freeze-drying of sample is subsequently to a defined storage temperature t_{Ice, bearing}, the is less than t_{Ice, freezing} is cooled,the moist mass m of the frozen sample and the volume v of the frozen sample in the case of t_{Ice, bearing} the sample to be measured and subsequently being thawed,the dry mass m_d the thawed sample is measured and the ice-cream mass m_Ice = m – m_d is calculated,the volume v_a the thawed sample in the case of t_{Ice, freezing} is measured and the volume difference δv = v, v_a is calculated,the dependence of the ice density from the salt content s_G of the pore water for in each case constant..