Heterogeneous nucleation of ice from supercooled NaCl solution confined in porous cement paste
作者： Qiang Zeng , Kefei Li , Teddy Fen-Chong
DOI: 10.1016/J.JCRYSGRO.2014.09.045
关键词: Chemical engineering 、 Contact angle 、 Porosity 、 Mineralogy 、 Porous medium 、 Supercooling 、 Porosimetry 、 Cement 、 Materials science 、 Nucleation 、 Ice nucleus
摘要: Abstract Clarifying the nucleation process of chloride-based deicing salt solution (e.g., NaCl solution) confined in cement-based porous materials remains an important issue to understand its detrimental effects on material substrates. In this study, pore structures hardened cement pastes were characterized by mercury-intrusion and nitrogen-sorption porosimetry. The ice temperature different concentrations was measured analyzed classical heterogeneous theory. kinetic factor, contact-angle factor including contact angle between substrate evaluated. results revealed that showed minimum value when adding 3% into water. rates found be proportional water activity shifts.
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