increasing of concrete endurance in acidic and sulfate environments using calcareous materials

in the present study, replacement of normal concrete aggregates with calcareous and silica aggregates and concrete endurance against acidic corrosion has been investigated. for this purpose, a number of concrete samples were built and placed in sulfate sodium and magnesium solutions. then, in various time intervals, changes of weight, dimension and strength of samples have been assessed and the obtained results on the samples and solutions were considered as basis of judgment. regarding the results of performed tests, it is observed that the samples built with calcareous aggregates have higher endurance and strength in acidic and corrosive environments. regarding the statistical analyses, the calcareous samples showed more than 53% endurance improvement in acidic and corrosive environments. so, using calcareous aggregates is an applied suggestion for raising the concrete endurance.