Electrochemical responses and chloride ingress in reinforced Belite-Ye'elimite-Ferrite (BYF) cement matrix exposed to exogenous salt sources

Guilherme Yuuki Koga; Paul Comperat; Blandine Albert; Virginie Roche; Ricardo Pereira Nogueira

doi:10.1016/j.corsci.2020.108469

Electrochemical responses and chloride ingress in reinforced Belite-Ye'elimite-Ferrite (BYF) cement matrix exposed to exogenous salt sources

Guilherme Yuuki Koga, Paul Comperat, Blandine Albert, Virginie Roche, Ricardo Pereira Nogueira

Chemical and Petroleum Engineering

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Reinforced Belite-Ye'elimite-Ferrite (BYF) mortars cured for different times and exposed for 90 and 182 days to a chloride-rich solution (full immersion and dry/wet cycles) were compared to Portland equivalents in terms of porosity, corrosion, chloride ingress and sorptivity. The effect of fly ash addition was also considered. BYF- and Portland-embedded rebars remained passivated through 182-day testing. The apparent chloride diffusion coefficients were about 10⁻¹² m² s^-1, except for 28-day-cured BYF mortars containing fly ash, which exhibited higher values. The results contribute to a better assessment of durability issues concerning BYF matrices, indicating they can be a reliable alternative to Portland.

Original language	British English
Article number	108469
Journal	Corrosion Science
Volume	166
DOIs	https://doi.org/10.1016/j.corsci.2020.108469
State	Published - 15 Apr 2020

Keywords

Chloride-profile
Corrosion
Durability
Steel reinforced concrete
Sulfoaluminate cement

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title = "Electrochemical responses and chloride ingress in reinforced Belite-Ye'elimite-Ferrite (BYF) cement matrix exposed to exogenous salt sources",

abstract = "Reinforced Belite-Ye'elimite-Ferrite (BYF) mortars cured for different times and exposed for 90 and 182 days to a chloride-rich solution (full immersion and dry/wet cycles) were compared to Portland equivalents in terms of porosity, corrosion, chloride ingress and sorptivity. The effect of fly ash addition was also considered. BYF- and Portland-embedded rebars remained passivated through 182-day testing. The apparent chloride diffusion coefficients were about 10−12 m² s-1, except for 28-day-cured BYF mortars containing fly ash, which exhibited higher values. The results contribute to a better assessment of durability issues concerning BYF matrices, indicating they can be a reliable alternative to Portland.",

keywords = "Chloride-profile, Corrosion, Durability, Steel reinforced concrete, Sulfoaluminate cement",

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T1 - Electrochemical responses and chloride ingress in reinforced Belite-Ye'elimite-Ferrite (BYF) cement matrix exposed to exogenous salt sources

AU - Koga, Guilherme Yuuki

AU - Comperat, Paul

AU - Albert, Blandine

AU - Roche, Virginie

AU - Nogueira, Ricardo Pereira

PY - 2020/4/15

Y1 - 2020/4/15

N2 - Reinforced Belite-Ye'elimite-Ferrite (BYF) mortars cured for different times and exposed for 90 and 182 days to a chloride-rich solution (full immersion and dry/wet cycles) were compared to Portland equivalents in terms of porosity, corrosion, chloride ingress and sorptivity. The effect of fly ash addition was also considered. BYF- and Portland-embedded rebars remained passivated through 182-day testing. The apparent chloride diffusion coefficients were about 10−12 m² s-1, except for 28-day-cured BYF mortars containing fly ash, which exhibited higher values. The results contribute to a better assessment of durability issues concerning BYF matrices, indicating they can be a reliable alternative to Portland.

AB - Reinforced Belite-Ye'elimite-Ferrite (BYF) mortars cured for different times and exposed for 90 and 182 days to a chloride-rich solution (full immersion and dry/wet cycles) were compared to Portland equivalents in terms of porosity, corrosion, chloride ingress and sorptivity. The effect of fly ash addition was also considered. BYF- and Portland-embedded rebars remained passivated through 182-day testing. The apparent chloride diffusion coefficients were about 10−12 m² s-1, except for 28-day-cured BYF mortars containing fly ash, which exhibited higher values. The results contribute to a better assessment of durability issues concerning BYF matrices, indicating they can be a reliable alternative to Portland.

KW - Chloride-profile

KW - Corrosion

KW - Durability

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KW - Sulfoaluminate cement

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Electrochemical responses and chloride ingress in reinforced Belite-Ye'elimite-Ferrite (BYF) cement matrix exposed to exogenous salt sources

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Keywords

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