sulphates and chlorides in soils as per IS 2720 and IS 456

sulphates should be less than 0.2 % in use of Ordinary portlald, portland slag, Portland pozzolona cement, may be above than 2.0 % for sulphate resistant portland , super sulphate cement with protective coatings over concrete. Chlorides not found in case of soils but can be present.

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