Chloride content threshold for soil in contact w reinforced concrete

[Ingenuity]

Does any one know of a reference (ASTM or DOT possibly) that documents Cl- contents (% by weight of sample or ppm) for soils that are adjacent ot reinforced concrete elements?

I have a project where there are very high Cl- contents in the concrete adjacent to the soil (test values for Cl- % are very large compared to ACI standards) and he have tested the soil but cannot find a reference with a tolerance or threshold beyond which it is accepted to be classified as low, intermediate, high etc re corrosion to the embedded reinforcing steel.

TIA

 

[Ron]

Chlorides don't attack concrete....they do their damage by attacking the rebar. Chlorides in the soil will only affect the reinf. concrete if allowed to migrate inward. If you are in a dry condition, migration is not very likely and would take many years to happen.

If you are in a wet condition, migration will occur and sometimes relatively fast. Chloride contents in the 1 to 2 lbs/cy range will likely affect the rebar.