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Table 4 Variations of the indicator tests on CEM III 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)
Yes Yes No KIO3 5 Weak blue discoloration
Yes Yes Yes KIO3 10 No discoloration
Yes Yes No H2O2 0 Blue discoloration
Yes Yes No H2O2 2 Blue discoloration, which changed to yellow discoloration
Yes Yes No H2O2 7 After second spraying: blue discoloration
Yes Yes Yes H2O2 0 Blue discoloration
Yes Yes Yes H2O2 2 Blue discoloration, which changed to yellow discoloration
Yes Yes Yes H2O2 5 After second spraying: blue discoloration
Yes Yes No K2S2O8 0 No discoloration
Yes Yes No K2S2O8 5 Blue discoloration
Yes Yes Yes K2S2O8 0 No discoloration
Yes Yes Yes K2S2O8 10 Blue discoloration