Effect of soluble inhibitors on the corrosion behaviour of galvanized steel in fresh concrete

被引：28

作者：

Bellezze, T. ^{[1
]}

Timofeeva, D. ^{[1
]}

Giuliani, G. ^{[1
]}

Roventi, G. ^{[1
]}

机构：

[1] Polytech Univ Marche, Dept Mat Environm Sci & Urban Planning, I-60131 Ancona, Italy

来源：

CEMENT AND CONCRETE RESEARCH | 2018年 / 107卷

关键词：

Galvanized steel; Fresh concrete; Inhibitor SEM; X-ray; diffraction; MOLYBDATE CONVERSION COATINGS; RARE-EARTH SALTS; PASSIVATING PRODUCTS; CARBONATION PROCESS; PORE SOLUTIONS; ZINC; REINFORCEMENTS; MORTAR; PERFORMANCE; DURABILITY;

D O I：

10.1016/j.cemconres.2018.02.008

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The effect of some soluble inhibitors on the passivation time of galvanized steel reinforcements in fresh concrete was studied in order to reduce H-2 evolution associated with the active corrosion. The investigation was performed by means of corrosion potential monitoring, scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction analysis. The obtained results indicate that the passivation of galvanized steel in concrete containing chromates occurs in three steps with different mechanisms and that dissolved oxygen is necessary for the beginning of passivation process. Among the inhibitors studied as alternative to Cr VI, nitrite seem the most promising one, even if it is less effective than chromate. Diethanolamine and molybdate ions do not have significant effect on the passivation time of galvanized steel in fresh concrete.

引用

页码：1 / 10

页数：10

共 50 条

[11] Effect of surface condition on the initial corrosion of galvanized reinforcing steel embedded in concrete
Tan, Z. Q.
Hansson, C. M.
CORROSION SCIENCE, 2008, 50 (09) : 2512 - 2522
[12] LABORATORY CORROSION TESTS OF GALVANIZED STEEL IN CONCRETE.
Hill, George A.
Spellman, D.L.
Stratfull, R.F.
Transportation Research Record, 1976, (604): : 25 - 37
[13] Corrosion behaviour of zirconia barrier coatings on galvanized steel
Pareja, R. Romero
Ibanez, R. Lopez
Martin, F.
Ramos-Barrado, J. R.
Leinen, D.
SURFACE & COATINGS TECHNOLOGY, 2006, 200 (22-23): : 6606 - 6610
[14] Erosion and corrosion of steel in fresh concrete
Cabrini, M.
Cortellini, M.
Lorenzi, S.
Marcassoli, P.
Pastore, T.
METALLURGIA ITALIANA, 2010, (05): : 39 - 44
[15] Corrosion inhibitors for steel in concrete
Elsener, B
Büchler, M
Böhni, H
CORROSION OF REINFORCEMENT IN CONCRETE: MONITORING, PREVENTION AND REHABILITATION, 1998, (25): : 54 - 69
[16] Corrosion behaviour of dual-phase and galvanized steels in concrete
Ismail, Mohammad
Muhammad, Bala
Hamzah, Esah
Keong, TanWui
ANTI-CORROSION METHODS AND MATERIALS, 2012, 59 (03) : 132 - 138
[17] Effect of cation type of chloride salts on corrosion behaviour of steel in concrete powder electrolyte solution in the presence of corrosion inhibitors
Das, Jyotish Kumar
Pradhan, Bulu
CONSTRUCTION AND BUILDING MATERIALS, 2019, 208 : 175 - 191
[18] The effect of silane-based hydrophobic admixture on corrosion of galvanized reinforcing steel in concrete
Tittarelli, F.
Moriconi, G.
CORROSION SCIENCE, 2010, 52 (09) : 2958 - 2963
[19] Influence of soil chemical characteristics on corrosion behaviour of galvanized steel
Rossi, Stefano
Pinamonti, Mattia
Calovi, Massimo
CASE STUDIES IN CONSTRUCTION MATERIALS, 2022, 17
[20] INFLUENCE OF ATMOSPHERIC CORROSION OF GALVANIZED STEEL REINFORCEMENTS ON THEIR BEHAVIOR IN CONCRETE
ARLIGUIE, G
GRANDET, J
FROM MATERIALS SCIENCE TO CONSTRUCTION MATERIALS ENGINEERING, VOLS 1-3: PORE STRUCTURE AND CONSTRUCTION MATERIALS PROPERTIES, COMBINING MATERIALS, DURABILITY OF CONSTRUCTION MATERIALS, 1987, : 998 - 1004

← 1 2 3 4 5 →