Abstract
An experimental investigation was carried out on chloride induced corrosion of steel bars in concrete under marine environment with the variation of micro-structure of steel-concrete interface. To create the variation of micro-structure of steel-concrete interface, steel bars coated with cement paste of different W/Cs and cement types were used. For investigation, cylindrical concrete specimens were made with steel bars (with and without cement paste coating). W/C ratios of cement paste coat were 0.3, 0.5, 0.7 and 1.0. The specimens were exposed to an accelerated seawater exposure controlled with automatic wetting and drying. The specimens were tested till 45 cycles in the exposure. Test items include compressive strength of concrete, chloride ingress into concrete, electrochemical evaluation of corrosion, microscopic investigations of steel-concrete interface by optical microscope, scanning electron microscope (SEM), and linear traverse. It is revealed that the initiation of corrosion is significantly influenced by the nature of micro-structure of the steel-concrete interface, such as size of voids at the steel-concrete interface.
| Original language | English |
|---|---|
| Pages (from-to) | 230-240 |
| Number of pages | 11 |
| Journal | Journal of Advanced Concrete Technology |
| Volume | 13 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 1 2015 |
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All Science Journal Classification (ASJC) codes
- Building and Construction
- Materials Science(all)
Cite this
Corrosion of steel bars in concrete with the variation of microstructure of steel-concrete interface. / Mohammed, Tarek Uddin; Hamada, Hidenori; Hasnat, Ariful; Al Mamun, Mohammed Abdullah.
In: Journal of Advanced Concrete Technology, Vol. 13, No. 4, 01.04.2015, p. 230-240.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Corrosion of steel bars in concrete with the variation of microstructure of steel-concrete interface
AU - Mohammed, Tarek Uddin
AU - Hamada, Hidenori
AU - Hasnat, Ariful
AU - Al Mamun, Mohammed Abdullah
PY - 2015/4/1
Y1 - 2015/4/1
N2 - An experimental investigation was carried out on chloride induced corrosion of steel bars in concrete under marine environment with the variation of micro-structure of steel-concrete interface. To create the variation of micro-structure of steel-concrete interface, steel bars coated with cement paste of different W/Cs and cement types were used. For investigation, cylindrical concrete specimens were made with steel bars (with and without cement paste coating). W/C ratios of cement paste coat were 0.3, 0.5, 0.7 and 1.0. The specimens were exposed to an accelerated seawater exposure controlled with automatic wetting and drying. The specimens were tested till 45 cycles in the exposure. Test items include compressive strength of concrete, chloride ingress into concrete, electrochemical evaluation of corrosion, microscopic investigations of steel-concrete interface by optical microscope, scanning electron microscope (SEM), and linear traverse. It is revealed that the initiation of corrosion is significantly influenced by the nature of micro-structure of the steel-concrete interface, such as size of voids at the steel-concrete interface.
AB - An experimental investigation was carried out on chloride induced corrosion of steel bars in concrete under marine environment with the variation of micro-structure of steel-concrete interface. To create the variation of micro-structure of steel-concrete interface, steel bars coated with cement paste of different W/Cs and cement types were used. For investigation, cylindrical concrete specimens were made with steel bars (with and without cement paste coating). W/C ratios of cement paste coat were 0.3, 0.5, 0.7 and 1.0. The specimens were exposed to an accelerated seawater exposure controlled with automatic wetting and drying. The specimens were tested till 45 cycles in the exposure. Test items include compressive strength of concrete, chloride ingress into concrete, electrochemical evaluation of corrosion, microscopic investigations of steel-concrete interface by optical microscope, scanning electron microscope (SEM), and linear traverse. It is revealed that the initiation of corrosion is significantly influenced by the nature of micro-structure of the steel-concrete interface, such as size of voids at the steel-concrete interface.
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U2 - 10.3151/jact.13.230
DO - 10.3151/jact.13.230
M3 - Article
AN - SCOPUS:84933498780
VL - 13
SP - 230
EP - 240
JO - Journal of Advanced Concrete Technology
JF - Journal of Advanced Concrete Technology
SN - 1346-8014
IS - 4
ER -