Long-term corrosion behaviour of stainless reinforcing steel in mortar exposed to chloride environment

Serdar, Marijana; Žulj, Lidija Valek; Bjegović, Dubravka

doi:10.1016/j.corsci.2012.11.035

Cited by 132 publications

(44 citation statements)

References 29 publications

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“…The water/cement ratio was high, as it is quite usual in experimental tests [13,[27][28][29]. Bearing in mind that a good quality concrete can have a water/cement ratio of about 0.4, the use of this mortar samples will imply that the volume fraction of capillary porosity will be about 2 times higher after the curing period than that of good quality material [30], and nearly 3 times higher after the complete hydration of the cement [30].…”

Section: Methodsmentioning

confidence: 75%

“…8), the influence of the diffusion step on the corrosion rate can be considered as negligible, and the corrosion rate is controlled by charge transfer step. A polarization resistance of 3 × 10 5 × cm 2 has been previously suggested to discriminate between active and passive CS reinforcements [13]. The values obtained for this R t after 5 year of exposure are below this value.…”

Section: Similar Welded Grade Exposure Time (Months)mentioning

confidence: 76%

“…However. tests in alkaline solutions have pointed out that welding 1 can decrease the corrosion resistance of stainless steels [10][11][12][13][14][15][16][17]. Previous research carried out in simulated pore solutions suggests that the adverse effect of weldings can be more or less marked depending on the stainless steel grade: more alloyed stainless steels seem to be less welding-sensitive [17].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover. stainless steel corrugated bars are also used to repair corroded structures, as replacements of old, damaged CS bars [13,14). When stainless steel bars are employed to replace part of corroded CS bars, it is sometimes unavoidable to weld the stainless steel reinforcements to the rest of the structure.…”

Section: Introductionmentioning

confidence: 99%

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Welded, sandblasted, stainless steel corrugated bars in non-carbonated and carbonated mortars: A 9-year corrosion study

et al. 2016

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Institutional RepositoryThis is a postprint version of the following published document:A. Bautista (et al.). Three different stainless steel corrugated grades ( UNS 520430, 530403 and 532205) were similar welded to stainless steel bars with the same composition and dissimilar welded to carbon steel ( CS) . After deaning the welding oxides by sandblasting, the reinforcements were embedded in mortar with chlorides and some of the samples were carbonated. Corrosion activity was monitored using corrosion potential ( Ecorr) and electrochemical impedance spectroscopy( EIS) . After 8 years of exposure, the samples were anodically polarized. Visual evaluation of the attack was performed after another additional year of exposure. Similar welded stainless steels offer a good durability if they have been sandblasted, except for 520430 when it is embedded in carbonated mortar with chlorides. Dissimilar welded steels are active since the beginning of the exposure for both studied conditions, but sandblasting reduces the corrosion rate of CS compared to non-welded CS bars. C. Welding

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Section: Methodsmentioning

confidence: 75%

Section: Similar Welded Grade Exposure Time (Months)mentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Welded, sandblasted, stainless steel corrugated bars in non-carbonated and carbonated mortars: A 9-year corrosion study

et al. 2016

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“…Thus, it is important to investigate new reinforcing steels that are more corrosion resistant than carbon steel in concrete. Despite its excellent corrosion resistance, [1][2][3] stainless steel has not been widely used due to its high cost. Hence, various chromium bearing steels have been developed for reinforcing steels.…”

Section: Introductionmentioning

confidence: 99%

Nano Structure of the Rust Formed on Chromium Bearing Steel in Concrete after Wet and Dry Corrosion Test

Nishimura

2015

ISIJ Int.

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Analysis of long‐term corrosion behavior in mortars containing recycled ladle furnace slag using computerized tomography and SEM

Rodríguez

Gutiérrez-González

Barrio

et al. 2014

Materials & Corrosion

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A series of mortars subjected to accelerated corrosion in a humid environment form the basis for this study. In particular, we studied the corrosion behavior of steel reinforcement bars that were embedded in cement mortars that contained white ladle furnace slag (LFS) in partial substitution for fines and cement. The effects were observed using computerized axial tomography and scanning electron microscopy. Zones with fissures resulting from corrosion and the degree of damage due to passivation were identified from the imaging analysis.Mortars with and without white LFS behaved in a similar manner in the presence of chlorides. X-ray diffraction (XRD) analysis confirmed that the formation of different hematite and goethite-type iron oxides was mainly responsible for the corrosion that was observed.

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Long-term corrosion behaviour of stainless reinforcing steel in mortar exposed to chloride environment

Cited by 132 publications

References 29 publications

Welded, sandblasted, stainless steel corrugated bars in non-carbonated and carbonated mortars: A 9-year corrosion study

Welded, sandblasted, stainless steel corrugated bars in non-carbonated and carbonated mortars: A 9-year corrosion study

Nano Structure of the Rust Formed on Chromium Bearing Steel in Concrete after Wet and Dry Corrosion Test

Analysis of long‐term corrosion behavior in mortars containing recycled ladle furnace slag using computerized tomography and SEM

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