Effect of supercooling on the instantaneous freezing dilation of cement-based porous materials:
作者： Qiang Zeng , Kefei Li , Teddy Fen-Chong
关键词: Supercooling 、 Porous medium 、 Materials science 、 Composite material 、 Poromechanics 、 Dilation (morphology) 、 Porosity 、 Deformation (engineering) 、 Pore water pressure 、 Thermal shock 、 Geotechnical engineering
摘要: This study seeks to assess the instantaneous deformation of saturated cement-based porous materials induced by supercooling pore fluid. Thermodynamic equilibria account for physical behaviors confined crystallization ice partially frozen systems. Pore pressure is built up when forms in pores, and this can be intimately related structure materials. To overcome metastability supercooled water that surpasses a normal poromechanical description, special program cooling has been designed. The hydraulic resulting from rapid formation thermal shock caused heat release an observed dilation peak. lower temperature, larger peak becomes. Rapid relaxation accounts significant contraction following also impact on freezing Results obtained these exa...
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