In the present work, a large number of publications in connection with critical chloride content
in reinforced concrete has been evaluated. The reported results scatter over more than two orders of magnitude
when expressed as total chloride content by cement weight and over three orders of magnitude when expressed
as Cl−/OH− ratio. This large scatter is partly the result of different definitions and experimental techniques, but
also due to many factors affecting critical chloride content. Dominating influences have been identified as follows:
1) The steel-concrete interface, 2) the pH value of the pore solution and 3) the electrochemical potential
of the steel. Experimental investigation of the issue of critical chloride content is possible in a wide variety of
procedures. At present, there exists no generally accepted or standardized procedure for the determination of
the critical chloride content.