Determination of chloride content in cement-based materials: Comparison of results derived by conventional methods and chloride sensor readings

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Abstract

In this paper the potentiometric response of a Ag/AgCl electrode as a chloride sensor in cementitious materials of different mix design was studied. The chloride sensor’s response was discussed with respect to the presence of hydration products around the sensor. The free chloride content inferred from the sensor’s response was compared to the one obtained from destructive water and acid soluble chlorides. The measured free chloride content, obtained via sensor’s reading, was lower than the obtained water and acid soluble chlorides. The results indicated the influence of the cementitious mix design on the correlation between the free chloride content obtained via sensor’s reading, water and acid soluble chlorides.
Original languageEnglish
Article number9
Pages (from-to)165-188
Number of pages24
JournalHeron
Volume64
Issue number1/2
Publication statusPublished - 2019

Keywords

  • Acid soluble chloride
  • Ag/AgCl sensor
  • Cement
  • Chloride binding
  • Free chloride
  • Water soluble chloride

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