2.2.6. Anti-Sulphate Capability (ASC)

Sulphate penetrates the surface of the concrete by infiltration, and a chemical reaction is produced when it combines with calcium hydroxide in the cement; when this occurs, the concrete expands, which further peels off the surface or destroys it. The experiment to measure the anti-sulphate capability of the HPC material samples can be carried out according to ASTM C1012; this method evaluates the resistance of the HPC to sulphate attack by measuring the rate of weight loss in an immersed specimen [34].
