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Corrosion Protection of CNTs/CNFs Modified Cement Mortars
Department of Chemical Engineering, National Technical University of Athens, Athens, Greece
Department of Chemical Engineering, National Technical University of Athens, Athens, Greece
Department of Chemical Engineering, National Technical University of Athens, Athens, Greece
- 1 Department of Chemical Engineering, National Technical University of Athens, Athens, Greece
- 2 Department of Chemical Engineering, National Technical University of Athens, Athens, Greece
- 3 Department of Chemical Engineering, National Technical University of Athens, Athens, Greece
Journal of Materials Science and Chemical Engineering·Volume 10 (2022)·Pages 1–17·Published 31 August 2022·DOI10.4236/msce.2022.108001
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Abstract
The aim of this study is to examine the performance of nano additives in two different sets of mortar specimens armed with reinforcing steel rebars. In particular, three sets of reinforced concrete cylinders with additives of 0.1% wt of carbon nanotubes (CNTs) and carbon nanofibers (CNFs) have been exposed to a solution of 3.5% NaCl, and further examined for the impact of nano-modification on corrosion performance. The anti-corrosive performance of these additives was investigated through linear polarization technique (LPR), mass loss and mercury porosimetry technique (MIP). From the investigation results, it is found that the addition of CNTs/CNFs causes lower steel corrosion, whereas the pore structure of concrete with CNTs/CNFs can significantly reduce the mass loss rate and the relative permeability.
KeywordsNano AdditivesCNTs/CNFsCement MortarsCorrosion ResistanceElectrochemical MeasurementsPorosimetry
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