- Detalles de la revista
- Formato
- Revista
- eISSN
- 2083-4799
- ISSN
- 1730-2439
- Publicado por primera vez
- 23 Sep 2008
- Periodo de publicación
- 4 veces al año
- Idiomas
- Inglés
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- Acceso abierto
The Influence of Added Inhibitors on Corrosion of Steel in Concrete Exposed to Chloride Containing Solutions
Páginas: 5 - 11
Resumen
Durability of concrete structures decrease due to corrosion in structures exposed to corrosive conditions. Several methods are adopted to minimize corrosion of steel in concrete; one of the methods is the use of inhibitors. In this work, the effect of inhibitor addition on corrosion of steel in concrete was investigated. Inhibitors added to concrete mix in different ratios, samples then immersed in 3.5% NaCl, and in Dead Sea Water for 15 months. Potential of steel reinforcement was measured by copper sulfate electrode according to ASTM C876. Results showed that an addition of 2% calcium nitrate or more was acceptable for adequate protection.
Keywords
- concrete
- steel
- inhibitors
- Calcium nitrate
- Acceso abierto
Bainite Transformation in Experimental Fe-Cr-Mo-V-Ti-C Steel
Páginas: 12 - 18
Resumen
The mechanism and kinetics of bainite transformation have been studied in Fe-Cr-Mo-V-Ti-C steel using high speed dilatometry and transmission electron microscopy (TEM) backed by thermodynamic analysis. At any temperature investigated did not occur the complete transformation of austenite. Obtained results confirm the incomplete reaction phenomenon with the cessation of the bainite transformation well before paraequilibrium is achieved. These experimental data indicate that bainitic ferrite forms by a displacive transformation mechanism, but soon afterwards, excess of carbon is partitioned into the residual austenite.
Keywords
- mechanism of bainite transformation
- kinetics
- lower
- upper bainite
- Acceso abierto
Degradation of GFRP Marine Laminates with Nano Particle Modified Coatings
Páginas: 19 - 22
Resumen
Water absorption and surface blistering behaviour was studied for polyester-matrix laminates with SiO2 nanoparticle reinforced gel coats. Accelerated water immersion tests at 37°C showed that addition of 10% nanoparticles increases blisters incubation time by ca. 50% compared to 5% and 0% nanoparticles composites.
Keywords
- Polymer composites
- nano composite
- durability
- scanning electron microscopy (SEM)