Abstract
This article proposes the use of migration test as a methodology for accelerated testing of sulfate ingress in concrete. Comparisons between 1 month of migration and 6 months of natural diffusion tests were performed for sodium and magnesium sulfate solutions. The results indicate an equivalent behavior between migration and natural diffusion. The sulfate profiles found were similar, the same phases were identified, as well as the values of compressive strength and CaO leaching. The results in the migration test allowed obtaining, in a short time, consistent evaluations of the attack by sulfates on the mechanical behavior and microstructure of concretes.
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