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List some of the common sources of sulfate ions in natural and industrial environments. For a given sulfate concentration, explain which of the following solutions

List some of the common sources of sulfate ions in natural and industrial environments. For a given sulfate concentration, explain which of the following solutions would be the most deleterious and which would be the least deleterious to a permeable concrete containing a high-C3A portland cement: Na2SO4, MgSO4, CaSO4.

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