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

共 57 条

[1] Environmental factors affecting the corrosion behaviour of reinforcing steel: I. The early stage of passive film formation in Ca(OH)2 solutions [J].

Abd El Haleem, S. M. ;

Abd El Aal, E. E. ;

Abd El Wanees, S. ;

Diab, A. .

CORROSION SCIENCE, 2010, 52 (12) :3875-3882

[2] Pore solution composition of calcium sulfoaluminate cement [J].

Andac, M ;

Glasser, FP .

ADVANCES IN CEMENT RESEARCH, 1999, 11 (01) :23-26

[3] Test methods for on-site corrosion rate measurement of steel reinforcement in concrete by means of the polarization resistance method [J].

Andrade, C ;

Alonso, C ;

Gulikers, J ;

Polder, R ;

Cigna, R ;

Vennesland, O ;

Salta, M ;

Raharinaivo, A ;

Elsener, B .

MATERIALS AND STRUCTURES, 2004, 37 (273) :623-643

[4] Critical chloride content in reinforced concrete - A review [J].

Angst, Ueli ;

Elsener, Bernhard ;

Larsen, Claus K. ;

Vennesland, Oystein .

CEMENT AND CONCRETE RESEARCH, 2009, 39 (12) :1122-1138

[5] Chloride threshold level for corrosion of steel in concrete [J].

Ann, Ki Yong ;

Song, Ha-Won .

CORROSION SCIENCE, 2007, 49 (11) :4113-4133

[6]

[Anonymous], 2006, 1961 NF EN

[7]

[Anonymous], 2011, Standard practice for classification of soils for engineering purposes (Unified Soil Classification System), P1, DOI [10.1520/C1557-14.2, DOI 10.1520/C0204-11.2]

[8]

[Anonymous], 2000, 2061 EN

[9]

[Anonymous], 2004, 13295 EN

[10]

[Anonymous], 2014, Building Code Requirements for Structural Concrete and Commentary, P318

← 1 2 3 4 5 6 →