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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1573| CORROSIÓN DE ACERO EMBEBIDO EN CONCRETO CON ADICIONES DE NANOPARTICULAS DE CARBONO | |
| ALBERTO MARTINEZ VILLAFAÑE FACUNDO ALMERAYA CALDERON CITLALI GAONA TIBURCIO | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| Nanoparticles | |
| These days it has been shown that the nanoparticles (NP) have exceptional physical and chemical properties, to an extent that there are several studies referred to construction industry. These studies are aimed at achieving a better understanding of nanoscale properties of concrete. Main researches of nanometric concrete (NC) have added NP as: Nano-Silica, nanoalumina, iron and titanium oxides nanoparticles, magnetite ash, carbon nanotubes (CNT) and fly ash. However, these researches have been aimed at improving the mechanical properties of concrete, so there are few records of studies of the electrochemical behavior of CN. Five groups of cubic specimens were made (size 50x50x50 mm), the water:cement ratio was 0.45, with fine aggregate and NC; the CNT additions used were 0.10, 0.20, 0.30, 0.40 %. All cubic specimens were immersed in a 5% NaCl Solution and monitored for 9 months to determine the effect of nanoparticles on the corrosion rate of reinforcement. The techniques used were: corrosion potential, lineal polarization resistance and electrochemical noise. The specimens had an experimental arrangement with three electrodes (two embedded bars acting as working and auxiliary electrodes and a third reference electrode of copper/copper sulphate). The results of the measurements of corrosion potential on the reinforcement after been exposed to sodium chloride for the five experimental arrangements, show values of around -350 to -480 mV, which indicate that under the criteria of ASTM C876, it has 90% of corrosion probability, in terms of values of icorr, these are around 10 -3 mA/cm2. In the five experimental arrangements the results are very similar, including the system without CNT. | |
| 2011 | |
| Memoria de congreso | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
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| PELLIGRINI M Corrosion Acero en Concreto con Nanotubo.pdf | 298.99 kB | Adobe PDF | Visualizar/Abrir |