Corrosion resistance of steel fibre reinforced concrete - A literature review

Meson, Victor Marcos; Michel, Alexander; Solgaard, Anders Ole Stubbe; Fischer, Gregor; Edvardsen, Carola; Skovhus, Torben Lund

doi:10.1016/j.cemconres.2017.05.016

Cited by 187 publications

(101 citation statements)

References 59 publications

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“…Steel fibers embedded within chloride-contaminated HyFRC were observed to have insignificant corrosion damage, except those fibers located very near a matrix crack or located at the ponding surface itself. Similar observations of the greater chloride threshold required to corrode steel fibers as opposed to conventional steel rebar have been summarized elsewhere in the literature [10,44].…”

Section: Observed Damagesupporting

confidence: 76%

Electrochemical polarization and impedance of reinforced concrete and hybrid fiber-reinforced concrete under cracked matrix conditions

Nguyen

Duncan

Devine

et al. 2018

Electrochimica Acta

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In this paper, we investigate the influence of cementitious matrix cracking on the electrochemical polarization and impedance behaviors of corroding reinforced concrete and crack-resistant reinforced hybrid fiber-reinforced concrete (HyFRC). Samples were exposed to a chloride environment for 2.5 years while in either a continuous tensile stress state or in a nonloaded condition, and were periodically monitored for Tafel polarization responses. Electrochemical impedance spectroscopy (EIS) was additionally performed at the conclusion of the test program. Greater severity of corrosion-induced matrix splitting cracks along the length of embedded steel reinforcing bars and subsequent formation of anodic surfaces were found to affect several electrochemical parameters, including increase of the corrosion current and decrease of the ohmic resistance of concrete. Cathodic and anodic Tafel coefficients and Stern-Geary coefficients for passive and active samples are also reported, highlighted by a Stern-Geary coefficient of B ¼ 28.1 mV for active corrosion.

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Section: Observed Damagesupporting

confidence: 76%

Electrochemical polarization and impedance of reinforced concrete and hybrid fiber-reinforced concrete under cracked matrix conditions

Nguyen

Duncan

Devine

et al. 2018

Electrochimica Acta

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“…It has been found that steel fibres have better corrosion resistance than reinforcement bars. This is probably due to there being fewer defects on the fibre surface and a more uniform fibre-matrix interface [27]. However, the long-term corrosion resistance and corrosion behaviour of steel fibres across cracks need further investigation, especially when the crack widths become very large.…”

Section: Residual Sectionmentioning

confidence: 99%

Correlation between concrete cracks and corrosion characteristics of steel reinforcement in pre-cracked plain and fibre-reinforced concrete beams

et al. 2020

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This paper presents results on corrosion characteristics of 66 rebars extracted from un-and precracked plain concrete and fibre-reinforced concrete (FRC) beams suffering from corrosion for more than 3 years. The influences of fibre reinforcement, flexural cracks, corrosion-induced cracks and loading condition on the maximum local corrosion level (defined as the maximum cross-sectional area loss percentage) and pit morphology were examined. With 3D-scanning, the corrosion characteristics were analysed, and pit types were classified based on the maximum local corrosion level and geometric parameters of pits. Corrosion pits were observed near some flexural cracks, while the bars at other cracks were free from corrosion. Most rebars in FRC had less maximum local corrosion level than those in plain concrete under the same loading condition and maximum flexural crack width. However, the maximum local corrosion level was not dependent on the maximum flexural crack width (0.1 and 0.4 mm). Longitudinal cracks (corrosion-induced cracks) aggravated the total steel loss and changed the pit morphology by promoting the pit length development. However, longitudinal cracks did not always form, even with severe pitting corrosion. A hypothesis about the time-dependent interplay between transverse and longitudinal cracks and corrosion development was proposed. Further studies on predicting the pitting corrosion evolution and experimental work on specimens exposed for longer periods are needed to understand and quantify the long-term durability of concrete structures reinforced with both conventional reinforcing bars and fibres.

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“…Mild steel in concrete is generally believed to be in passive state due to the high alkalinity of the concrete pore solution . However, if reinforced concrete is exposed in a high chloride concentration environment, for example, in seawater, the ingress of chlorides can damage the passive film, triggering pitting and resulting in localized corrosion …”

Section: Resultsmentioning

confidence: 99%

A double‐mode cell to measure pitting and crevice corrosion

Shen

Song

Zheng

et al. 2019

Materials & Corrosion

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Pitting corrosion and crevice corrosion of passivated steels were measured by using a double-mode syringe electrolyte cell built on an environment chamber.The setup, when set in noncontact mode, could measure pitting potentials and critical temperatures, and crevice corrosion potentials if in contact mode. It could be employed to distinguish the pitting and crevice corrosion damage of reinforcing steel in concrete. K E Y W O R D Screvice corrosion, electrochemical measurement, passivity, pitting corrosion

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Corrosion resistance of steel fibre reinforced concrete - A literature review

Cited by 187 publications

References 59 publications

Electrochemical polarization and impedance of reinforced concrete and hybrid fiber-reinforced concrete under cracked matrix conditions

Electrochemical polarization and impedance of reinforced concrete and hybrid fiber-reinforced concrete under cracked matrix conditions

Correlation between concrete cracks and corrosion characteristics of steel reinforcement in pre-cracked plain and fibre-reinforced concrete beams

A double‐mode cell to measure pitting and crevice corrosion

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