SciELO - Scientific Electronic Library Online

 
vol.19 número3Algoritmo recocido simulado para el problema de la programación del tamaño del lote económico bajo el enfoque de ciclo básico índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Ingeniare. Revista chilena de ingeniería

versión On-line ISSN 0718-3305

Resumen

CORDOBA, V. C et al. Corrosion mitigation of buried structures by soils modification. Ingeniare. Rev. chil. ing. [online]. 2011, vol.19, n.3, pp. 486-497. ISSN 0718-3305.  http://dx.doi.org/10.4067/S0718-33052011000300016.

Carbon steel samples were buried in loamy soil modified with lime, fly-ash and Portland cement in ratio of 5 and 10% during 60 days. Corrosion attack was assessed by electrochemical impedance spectroscopy. Loamy soil without modification was taken as reference. The corrosion products in rust were characterized by Raman spectroscopy. It was found that soil with fly-ash and Portland cement can develop corrosion protection to bare steel due to the changing of formed rust on steel samples. Lepidocrocite and Goethite were found as major constituents in formed rust on buried steel in soil modified with fly-ash and cement, while Magnetite was found informed rust on buried steel in soil without addition of cementitious materials and modified with lime. According to the electrochemical results, the soil with 5% of fly-ash exhibited the anticorrosive best performance.

Palabras llave : Carbon steel; soil corrosion; soil modification; electrochemical impedance; Raman spectroscopy.

        · resumen en Español     · texto en Inglés     · pdf en Inglés