scope:

this part of ISO 1920 specifies a method for determining the unidirectional non-steady-state chloride penetration parameters of conditioned specimens of hardened concrete. The test method enables the determination of the chloride penetration at a specified age, e.g. for ranking of concrete quality by comparative testing.

NOTE 1 The aim of the test is to assess the potential resistance to chloride ingress for a concrete mix.

NOTE 2 since resistance to chloride penetration depends on ageing. due to the effects of continual hydram of the concrete, the ranking mayalso change with age.