Corrosion Protection of CNTs/CNFs Modified Cement Mortars  

作　　者：Christina V. Panagiotakopoulou Panagiotis Papandreopoulos George Batis Christina V. Panagiotakopoulou;Panagiotis Papandreopoulos;George Batis(Department of Chemical Engineering, National Technical University of Athens, Athens, Greece)

机构地区：[1]Department of Chemical Engineering, National Technical University of Athens, Athens, Greece

出　　处：《Journal of Materials Science and Chemical Engineering》2022年第8期1-17,共17页材料科学与化学工程（英文）

摘　　要：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.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.

关 键 词：Nano Additives CNTs/CNFs Cement Mortars Corrosion Resistance Electrochemical Measurements POROSIMETRY 

分 类 号：TB3[一般工业技术—材料科学与工程]