Electrochemical Evaluation of AISI 304 SS and Galvanized Steel in Ternary Ecological Concrete based on Sugar Cane Bagasse Ash and Silica Fume (SCBA-SF) exposed to Na2SO4

Miguel Angel Baltazar-Zamora, Hilda Ariza-Figueroa, Laura Landa-Ruiz and René Croche
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Miguel Angel Baltazar-Zamora: Facultad de Ingeniería Civil - Xalapa, Universidad Veracruzana, Mexico
Hilda Ariza-Figueroa: Universidad Veracruzana, FIME, Xalapa,Veracruz, México
Laura Landa-Ruiz: Universidad Veracruzana, Facultad de Ingeniería Civil – Xalapa, Xalapa, Veracruz, México
René Croche: Universidad Veracruzana, Facultad de Ingeniería Mecánica y Eléctrica – Xalapa, Xalapa, Veracruz, México

European Journal of Engineering and Technology Research, 2020, vol. 5, issue 3, 353-357

Abstract: In the present research, was studied the electrochemical behavior of AISI 304 stainless steel and Galvanized Steel embedded in Ternary Ecological Concrete made with partial substitution of Portland Cement (PC) by combination of Sugar Cane Bagasse Ash and Silica Fume (SCBA-SF) in 10, 20 and 30% and exposed to a 3.5% solution of Na2SO4 as an aggressive medium. For the design of the concrete mixtures was used ACI 211.1 method. Quality control tests of fresh and hardened concrete were carried out in accordance with the ONNCCE and ASTM standards. The electrochemical evaluation was carried out for a period of 6 months, using the techniques of corrosion potential Ecorr (ASTM C-876-15) and Linear Polarization Resistance-LPR- (ASTM G59) to determine the corrosion rate Icorr. The results indicate that AISI 304 SS has a high corrosion resistance from the curing stage to the end of monitoring, with values of Ecorr lower than -200 mV and negligible corrosion levels with values of Icorr below 0.1 µA/cm2, greater protection is identified in the Ternary Ecological Concrete with replacement of 30% of PC by SCBA-SF.

Keywords: Corrosion; Ecological Concrete; AISI 304; Galvanized Steel; SCBA-SF; Sulphates (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:epw:ejeng0:v:5:y:2020:i:3:id:61852

DOI: 10.24018/ejeng.2020.5.3.1852

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