Browsing NTNU Open by Author "Gao, Hao"

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    • Formation and growth of multiple, distinct ice lenses in frost heave 

      Gao, Hao; Ghoreishian Amiri, Seyed Ali; Kjelstrup, Signe; Grimstad, Gustav; Loranger, Benoit; Scibilia, Elena (Peer reviewed; Journal article, 2022)
      This paper presents a fully coupled thermo-hydro-mechanical (THM) modelwhich simulates frost heave in fully saturated soils. The model is able tosimulate the formation and growth of multiple distinct ice lenses. The ...

    • Joint Acoustic and Electrical Measurements for Unfrozen Water Saturation Estimate—A Review 

      Lyu, Chuangxin; Ghoreishian Amiri, Seyed Ali; Gao, Hao; Ingeman-Nielsen, Thomas; Grimstad, Gustav (Chapter, 2019)
      The previous laboratory study of joint electrical resistivity and acoustic velocity measurements is reviewed for both consolidated and unconsolidated permafrost in this paper. The relation of logarithm of resistivity log(R) ...

    • Numerical modelling of distinct ice lenses in frost heave 

      Ghoreishian Amiri, Seyed Ali; Grimstad, Gustav; Gao, Hao; Kjelstrup, Signe (Peer reviewed; Journal article, 2021)
      Frost heave happens when three conditions coincide: the temperature is below the normal freezing point of bulk water, the sub-cooled water is connected to a water reservoir, and the mechanical conditions of the soil allows ...

    • Thermo-hydro-mechanical Simulation of Frost Heave using Extended Finite Element Method 

      Gao, Hao (Doctoral theses at NTNU;2024:145, Doctoral thesis, 2024)
      The starting point of this work is a conceptual model for frost heave based on nonequilibrium thermodynamics. According to the theory, the temperature gradient in the soil under frozen condition is the main driving force ...

    • Transport coefficients and pressure conditions for growth of ice lens in frozen soil 

      Kjelstrup, Signe; Ghoreishian Amiri, Seyed Ali; Loranger, Benoit; Gao, Hao; Grimstad, Gustav (Peer reviewed; Journal article, 2021)
      In this paper, the transport of sub-cooled water across a partially frozen soil matrix (frozen fringe) caused by a temperature difference over the fringe, is described using non-equilibrium thermodynamics. A set of coupled ...