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Estimation of ice formation in mortar saturated with sodium chloride solutions

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Title: Estimation of ice formation in mortar saturated with sodium chloride solutions
Authors: Wang, Yi Browse this author
Gong, Fuyuan Browse this author
Zhang, Dawei Browse this author
Ueda, Tamon Browse this author →KAKEN DB
Keywords: Ice content
Sodium chloride
Solution concentration
Pore size distribution
Electrical response
Freeze-thaw cycles
Issue Date: 30-Jul-2017
Publisher: Elsevier
Journal Title: Construction and building materials
Volume: 144
Start Page: 238
End Page: 251
Publisher DOI: 10.1016/j.conbuildmat.2017.03.073
Abstract: Frost damage of concrete is usually caused by ice expansion, therefore, the ice formation of NaCI solutions is of significant importance for predicting the mechanical degradation of concrete under the combined frost action and NaCl attack. In this study, the ice formation in cementitious materials saturated with different concentrations of NaCI solution is theoretically investigated first. Then the ice formation in mortar is further studied experimentally by electrical measurements. To estimate the ice amount based on the electrical measurements, the relationship between temperature, saturation degree, solution concentration and the electrical conductivity of mortar specimen is clarified. With regard to ice formation and salt crystallization during freeze-thaw, the ice content estimation model is proposed for mortar specimens. In addition, electrical response of meso-scale mortar specimens saturated with NaCl solutions with freeze thaw cycles (FTCs) is measured. The electrical test results are interpreted with the proposed model and the ice formation is estimated with FTCs. The results from electrical measurements are compared with the theoretical calculations, and acceptable agreement is observed.
Rights: © 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 上田 多門

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