Abstract
The simultaneous action of corrosive media and mechanical stresses on cementitious materials leads to stress corrosion. Both the flexural strength of mortars in various aqueous solutions and the creep behaviour of concrete in sodium sulphate solutions depend significantly on the external load being applied during the period of chemical attack. The stress corrosion of hydraulic binders is of importance with respect to the evaluation of the durability of concrete structures subjected to chemical attack under practical conditions. Beside the chemical attack, the structure is subjected to different types of mechanical stress, i.e. the occurrence of stress corrosion is probable.
Résumé
L'action conjuguée de milieux corrosifs et de contraintes mécaniques sur les liants provoque la corrosion. La résistance en flexion de mortiers dans différents solutions aqueuses, comme le fluage du béton dans des solutions de sulphates, dépend de façon notable de la charge externe appliquée pendant la durée de l'attaque chimique. La corrosion sous contrainte de liants hydrauliques est importante pour l'évaluation de la durabilité des structures en béton soumises à une attaque chimique dans des conditions pratiques. La structure est soumise non seulement à l'attaque chimique mais aussi à différents types de contraintes mécaniques, c'est à dire qu'il y a probabilité de corrosion par contrainte.
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Schneider, U., Piasta, J., Nägele, E. et al. Stress corrosion of cementitious materials in sulphate solutions. Materials and Structures 23, 110–115 (1990). https://doi.org/10.1007/BF02472570
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DOI: https://doi.org/10.1007/BF02472570