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Table 5 Variations of the indicator tests on CEM I concrete specimens and observations

From: Chloride migration measurement for chloride and sulfide contaminated concrete

Reactants Oxidation agent Time after spraying
[min]
Observations
Sulfide
(GGBS)
Iodide
(RIM)
Chloride
(RCM)
No Yes Yes H2O2 0 Blue discoloration
No Yes Yes H2O2 2 Blue discoloration, which changed to yellow discoloration
No Yes Yes H2O2 7 After second spraying: blue discoloration
No Yes Yes K2S2O8 0 No discoloration
No Yes Yes K2S2O8 5 Blue discoloration