Print Email Facebook Twitter Corrosion performance of reinforced mortar in the presence of polymeric nano-aggregates: Electrochemical behavior, surface analysis, and properties of the steel/cement paste interface Title Corrosion performance of reinforced mortar in the presence of polymeric nano-aggregates: Electrochemical behavior, surface analysis, and properties of the steel/cement paste interface Author Hu, J. Koleva, D.A. Van Breugel, K. Faculty Civil Engineering and Geosciences Department Structural Engineering Date 2012-03-09 Abstract This study reports on the effect of admixed polyethylene oxide-b-polystyrene (PEO113-b-PS70)micelles on corrosion behavior of reinforced mortar. The electrochemical measurement shows that the corrosion performance of the reinforcing steel was not significantly improved. However, surface analysis and microstructural investigation at the steel/cement paste interface reveal that the admixed micelles lead to a steel surface layer with enhanced barrier properties in terms of morphology and composition. Therefore, the presence of micelles further minimized and halted the corrosion process, despite the very aggressive, chloride-containing environment of 5% NaCl. The reasons and mechanisms behind the hereby observed corrosion behavior of reinforced mortar in the presence of micelles are related to the influence of these nano-aggregates on microstructural properties. These further results in altered water/ion transport and chloride-binding mechanisms in the bulk mortar matrix and thus steel product layer modifications towards enhanced corrosion resistance. To reference this document use: http://resolver.tudelft.nl/uuid:39f5ae1a-199e-4bdf-9679-9d0d2570af41 DOI https://doi.org/10.1007/s10853-012-6374-6 Publisher Springer ISSN 0022-2461 Source http://www.springerlink.com/content/a7155712p153hg27/ Source Journal of materials science, 47 (12), 2012 Part of collection Institutional Repository Document type journal article Rights (c) 2012 The Author(s)This article is published with open access at Springerlink.com Files PDF 2012-37Hu.pdf 1.48 MB Close viewer /islandora/object/uuid:39f5ae1a-199e-4bdf-9679-9d0d2570af41/datastream/OBJ/view