Potentiometric Response of Ag/AgCl Chloride Sensors in Model Alkaline Medium

Table 1

Solutions for calibration of the chloride sensors.

Number	Solution	pH	Chloride concentration (mM)
1	Deionized water	6	1, 2, 4, 8, 16, 31, 64, 125, 250, 500, 1000
2	Cement extract solution	12.8	12, 14, 16, 20, 27, 44, 77, 142, 260, 513, 1008
3	Simulated pore solution	13.6	1, 2, 4, 8, 16, 31, 64, 125, 250, 500, 1000

Cement extract solution contains 12 mM chloride content due to the mixing water and chloride at levels of <0.03% in the original cement (ENCI, NL specifications).