Evaluation of the nano silica and nano waste materials on the corrosion protection of high strength steel embedded in ultra-high performance concrete

Abstract Corrosion resistance of high strength steel (HHS) embedded in ultra-high performance concrete (UHPC) immersed in 3.5% NaCl solution is evaluated in the absence and presence of nano silica (NS), nano glass waste (NGW), nano rice husk ash (NRHA) and nano metakaolin (NMK) using open circuit po...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Sahar A. Mostafa, Mohamed M. EL-Deeb, Ahmed A. Farghali, A. Serag Faried
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/78d7443b72ef4e469f6e2904807ccd96
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:78d7443b72ef4e469f6e2904807ccd96
record_format	dspace
spelling	oai:doaj.org-article:78d7443b72ef4e469f6e2904807ccd962021-12-02T14:16:26ZEvaluation of the nano silica and nano waste materials on the corrosion protection of high strength steel embedded in ultra-high performance concrete10.1038/s41598-021-82322-02045-2322https://doaj.org/article/78d7443b72ef4e469f6e2904807ccd962021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82322-0https://doaj.org/toc/2045-2322Abstract Corrosion resistance of high strength steel (HHS) embedded in ultra-high performance concrete (UHPC) immersed in 3.5% NaCl solution is evaluated in the absence and presence of nano silica (NS), nano glass waste (NGW), nano rice husk ash (NRHA) and nano metakaolin (NMK) using open circuit potential, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) under normal and accelerated conditions. Data showed that the corrosion rate in the accelerated conditions is higher compared by the normal conditions due to the increasing in the rate of both anodic and cathodic reactions in the presence of anodic current. On the other hand, the presence of the studied nano materials decreases both the anodic and cathodic overpotentials, and shifts both the open circuit potential (Eocp) and corrosion potential (Ecorr) of HSS to more noble values, as well as decreases the values of the corrosion current densities (Icorr) in both normal and accelerated conditions. Furthermore, EIS analysis illustrates that the presence of these materials enhances both the concrete bulk resistance and the charge transfer resistance at HSS/UHPC interface, which retards the flow of the electrons between the anodic and cathodic sites, thus impeding the propagation of the corrosion process. The inhibitory effect of the studied nano materials for the corrosion of HSS is interpreted on the basis of the change in the microstructure and the compressive strength of the UHPC.Sahar A. MostafaMohamed M. EL-DeebAhmed A. FarghaliA. Serag FariedNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sahar A. Mostafa Mohamed M. EL-Deeb Ahmed A. Farghali A. Serag Faried Evaluation of the nano silica and nano waste materials on the corrosion protection of high strength steel embedded in ultra-high performance concrete
description	Abstract Corrosion resistance of high strength steel (HHS) embedded in ultra-high performance concrete (UHPC) immersed in 3.5% NaCl solution is evaluated in the absence and presence of nano silica (NS), nano glass waste (NGW), nano rice husk ash (NRHA) and nano metakaolin (NMK) using open circuit potential, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) under normal and accelerated conditions. Data showed that the corrosion rate in the accelerated conditions is higher compared by the normal conditions due to the increasing in the rate of both anodic and cathodic reactions in the presence of anodic current. On the other hand, the presence of the studied nano materials decreases both the anodic and cathodic overpotentials, and shifts both the open circuit potential (Eocp) and corrosion potential (Ecorr) of HSS to more noble values, as well as decreases the values of the corrosion current densities (Icorr) in both normal and accelerated conditions. Furthermore, EIS analysis illustrates that the presence of these materials enhances both the concrete bulk resistance and the charge transfer resistance at HSS/UHPC interface, which retards the flow of the electrons between the anodic and cathodic sites, thus impeding the propagation of the corrosion process. The inhibitory effect of the studied nano materials for the corrosion of HSS is interpreted on the basis of the change in the microstructure and the compressive strength of the UHPC.
format	article
author	Sahar A. Mostafa Mohamed M. EL-Deeb Ahmed A. Farghali A. Serag Faried
author_facet	Sahar A. Mostafa Mohamed M. EL-Deeb Ahmed A. Farghali A. Serag Faried
author_sort	Sahar A. Mostafa
title	Evaluation of the nano silica and nano waste materials on the corrosion protection of high strength steel embedded in ultra-high performance concrete
title_short	Evaluation of the nano silica and nano waste materials on the corrosion protection of high strength steel embedded in ultra-high performance concrete
title_full	Evaluation of the nano silica and nano waste materials on the corrosion protection of high strength steel embedded in ultra-high performance concrete
title_fullStr	Evaluation of the nano silica and nano waste materials on the corrosion protection of high strength steel embedded in ultra-high performance concrete
title_full_unstemmed	Evaluation of the nano silica and nano waste materials on the corrosion protection of high strength steel embedded in ultra-high performance concrete
title_sort	evaluation of the nano silica and nano waste materials on the corrosion protection of high strength steel embedded in ultra-high performance concrete
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/78d7443b72ef4e469f6e2904807ccd96
work_keys_str_mv	AT saharamostafa evaluationofthenanosilicaandnanowastematerialsonthecorrosionprotectionofhighstrengthsteelembeddedinultrahighperformanceconcrete AT mohamedmeldeeb evaluationofthenanosilicaandnanowastematerialsonthecorrosionprotectionofhighstrengthsteelembeddedinultrahighperformanceconcrete AT ahmedafarghali evaluationofthenanosilicaandnanowastematerialsonthecorrosionprotectionofhighstrengthsteelembeddedinultrahighperformanceconcrete AT aseragfaried evaluationofthenanosilicaandnanowastematerialsonthecorrosionprotectionofhighstrengthsteelembeddedinultrahighperformanceconcrete
_version_	1718391675124973568

Evaluation of the nano silica and nano waste materials on the corrosion protection of high strength steel embedded in ultra-high performance concrete

Ejemplares similares