Chemical attack to concrete by soil sulfate and chloride
Chemical attack to concrete by soil sulfate and chloride
(OP)
Trying to find out what levels of sulfate and chloride in soil would be considered a concern regarding chemical attack to foundation concrete. Any tables providing "degrees" of concern, e.g., "slight risk", "moderate risk", "high risk", etc.?





RE: Chemical attack to concrete by soil sulfate and chloride
Type 5, V, or 50 depending on where you are is contraindicated for chloride exposure.
Dik
RE: Chemical attack to concrete by soil sulfate and chloride
RE: Chemical attack to concrete by soil sulfate and chloride
RE: Chemical attack to concrete by soil sulfate and chloride
The corrosion of concrete footings is generally not a big concern since oxygen is limited below grade even when aggresive soils are present. Designers are more concerned about ferrous metal pipelines where galvanic and stray current corrosion is a problem. It can be a problem for concrete pipes and culverts where there is a nice combination of air, moisture and oxidizing agents. Resistance to corrosion of rebar in concrete can be improved by requiring low permeability concrete, epoxy-coated bars or increasing the depth of cover.
RE: Chemical attack to concrete by soil sulfate and chloride
Dik
RE: Chemical attack to concrete by soil sulfate and chloride