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

被引：18

作者：

Koga, Guilherme Yuuki ^{[1
,2
,3
]}

Comperat, Paul ^{[2
]}

Albert, Blandine ^{[2
]}

Roche, Virginie ^{[1
]}

Nogueira, Ricardo Pereira ^{[1
,4
]}

机构：

[1] Grenoble Alpes Univ, CNRS, LEPMI, F-38000 Grenoble, France

[2] LafargeHolcim Res Ctr, 95 Rue Montmurier, F-38291 St Quentin Fallavier, France

[3] Univ Fed Sao Carlos, Dept Mat Sci & Engn, Rod Washington Luis, BR-13565905 Sao Carlos, SP, Brazil

[4] Khalifa Univ Sci & Technol, Dept Chem Engn, POB 127788, Abu Dhabi, U Arab Emirates

来源：

CORROSION SCIENCE | 2020年 / 166卷

基金：

巴西圣保罗研究基金会;

关键词：

Steel reinforced concrete; Sulfoaluminate cement; Durability; Corrosion; Chloride-profile; CORROSION BEHAVIOR; GEOPOLYMER CONCRETE; THRESHOLD LEVEL; STEEL CORROSION; FLY-ASH; POLARIZATION; PERFORMANCE; PHASE; WATER;

D O I：

10.1016/j.corsci.2020.108469

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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) m(2) 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.

引用

页数：13

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