Revealing corrosion parameters of steel in alkali-activated materials

被引：20
|
作者：
Runci, Antonino [1 ]
Provis, John L. [2 ]
Serdar, Marijana [1 ,2 ]
机构：
[1] Univ Zagreb, Fac Civil Engn, Dept Mat, Zagreb, Croatia
[2] Univ Sheffield, Dept Mat Sci & Engn, Sheffield, England
来源：
CORROSION SCIENCE | 2023年 / 210卷
基金：
欧盟地平线“2020”;
关键词：
Alkali -activated material; Corrosion; Chloride; EIS; Tafel; CHLORIDE-INDUCED CORROSION; POLARIZATION RESISTANCE; REINFORCING STEEL; FLY-ASH; ELECTROCHEMICAL TECHNIQUES; PORE SOLUTION; CARBON-STEEL; BAR SAMPLES; CONCRETE; BEHAVIOR;
D O I：
10.1016/j.corsci.2022.110849
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The long-term corrosion behaviour of reinforcing steel embedded in alkali-activated mortars (AAMs) prepared with three different binder compositions was monitored over a 360-day period by cyclic wetting/drying and spraying with chloride solution. Corrosion potential and polarisation resistance were determined by linear polarisation, individual resistance of mortar and steel by electrochemical impedance spectroscopy, and Tafel slopes by potentiodynamic anodic polarisation. The results were validated by correlating the electrochemical mass losses with the gravimetric mass losses. Based on the time evolution of the corrosion parameters, the study proposes new limits for passive and active corrosion conditions for reinforcing steel in AAMs.
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页数：14
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