The paper deals with the study of the effect of polymer modified cementitious mortars on chloride-induced corrosion of steel reinforcement in concrete. Tests were carried out on two commercial coatings, with different polymer/cement ratio. Monitoring of rebars corrosion potential and corrosion rate in concrete subjected to chloride ponding were carried out for more than 15 years; chloride penetration profiles, coating adhesion and corrosion morphology have been also analysed. It was demonstrated that polymer modified cementitious mortars can delay corrosion initiation in concrete caused by chloride penetration. The protective effect increase as the polymer content (polymer/cement ratio) increases
Corrosione delle armature in calcestruzzo rivestito con malte cementizie modificate con polimeri
F. Bolzoni;S. Beretta;A. Brenna;M. V. Diamanti;M. Ormellese;M. Pedeferri;M. Berra
2018-01-01
Abstract
The paper deals with the study of the effect of polymer modified cementitious mortars on chloride-induced corrosion of steel reinforcement in concrete. Tests were carried out on two commercial coatings, with different polymer/cement ratio. Monitoring of rebars corrosion potential and corrosion rate in concrete subjected to chloride ponding were carried out for more than 15 years; chloride penetration profiles, coating adhesion and corrosion morphology have been also analysed. It was demonstrated that polymer modified cementitious mortars can delay corrosion initiation in concrete caused by chloride penetration. The protective effect increase as the polymer content (polymer/cement ratio) increases| File | Dimensione | Formato | |
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