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Corrosion behaviors of cement mortar specimens with different cover thickness in natural sea water
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 Title & Authors
Corrosion behaviors of cement mortar specimens with different cover thickness in natural sea water
Jeong, Jin-A; Jin, Chung-Kuk; Jeong, Eun-Seok;
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 Abstract
This paper presents electrochemical corrosion behaviors of cement mortar specimens in the high salinity condition. Chloride ion is known as the most detrimental parameter to cause the corrosion in reinforced concrete. Increasing the concrete cover thickness is one of the corrosion protection methods against chloride ion; so, this study mainly focuses on the effects of mortar cover thickness on corrosion protection. In specimens, rebar, which was a height of 200 mm and a diameter of 10 mm, was installed at the center of the small size form. Later on, mortar was injected into the form, and 10, 20, 30, 40, and 50 mm of the different mortar cover thicknesses were selected. Potential measurements, linear polarization resistance tests, and cyclic potentiodynamic polarization tests were performed for specimens that were exposed to seawater. These results were compared with visual inspection results of rebar. The results show that an increase in the cover thickness contributes to corrosion protection. In addition, the result of electrochemical corrosion tests generally agreed with that of an autopsy visual inspection.
 Keywords
Corrosion;Cement;Mortar;Salinity;Polarization;
 Language
English
 Cited by
 References
1.
G. Blancoa, A. Bautistaa, and H. Takenoutib, "EIS study of passivation of austenitic and duplex stainless steels reinforcements in simulated pore solutions," Cement and Concrete Composites, vol. 28, no. 3, pp. 212-219, 2006. crossref(new window)

2.
S. Fajardoa, D. M. Bastidasa, M. Criadoa, M. Romerob, and J. M. Bastidasa, "Corrosion behaviour of a new low-nickel stainless steel in saturated calcium hydroxide solution," Construction and Building Materials, vol. 25, no. 11, pp. 4090-4096, 2011.

3.
M. Saleem, M. Shameem, S. E. Hussain, and M. Maslehuddin, "Effect of moisture, chloride and sulphate contamination on the electrical resistivity of Portland cement concrete," Construction and Building Materials, vol. 10, no. 3, pp. 209-214, 1996. crossref(new window)

4.
O. T. D. Rincona, Y. H. Lopeza, A. D. V. Morenob, A. A. T. Acostab, F. Barriosa, P. Monteroa, P. O. Salinasb, and J. R. Monteroc, "Environmental influence on point anodes performance in reinforced concrete," Construction and Building Materials, vol. 22, no. 4, pp. 494-503, 2008. crossref(new window)

5.
B. Sederholm, J. Almqvist, and S. Randstrom, Corrosion Properties of Stainless Steels as Reinforcement in Concrete in Swedish Outdoor Environment, NACE International Paper No. 09203, 2009.

6.
L. Bertolini and E. Redaelli, "Throwing power of cathodic prevention applied by means of sacrificial anodes to partially submerged marine reinforced concrete piles: Results of numerical simulations," Corrosion Science, vol. 51, no. 9, pp. 2218-2230, 2009. crossref(new window)

7.
F. Pruckner, Corrosion and Protection of Reinforcement in Concrete Measurement and Interpretation, A Thesis submitted for the Degree of Doctor at the University of Vienna, pp. 31-32, 2001.

8.
M. Funahashi and W. T. Young, Three year performance of aluminum alloy galvanic cathodic protection system, NACE International Paper No.99550, 1999.

9.
S. J. Lee, M. S. Han, and S. J. Kim, "Improvement of Anti-Corrosion Characteristics for Light Metal in Surface Modification with Sulfuric Acid Solution Condition," Journal of the Korean Society of Marine Engineering, vol. 39, 2015.

10.
J. A. Jeong, C. K. Jin, and J. U. Lee, "A study on the corrosion evaluation and lifetime prediction of fire extinguishing pipeline in residential buildings," Journal of the Korean Society of Marine Engineering, vol. 39, 2015.

11.
J. P. Broomfield, Corrosion of steel in concrete, Second ed., Taylor & Francis, London and New York, 2007.

12.
L. Bertolini, F. Bolzoni, P. Pedeferri, and T. Pastore, Three Year Tests on Cathodic Prevention of Reinforced Concrete Structures, NACE International Paper No. 97244, 1997.

13.
T. S. Nguyen, S. Lorente, and M Carcasses, "Effect of environment temperature on the chloride diffusion though CEM-I and CEM-V mortars: an experimental study," Construction and Building Materials, vol. 23, pp. 795-803, 2009. crossref(new window)

14.
D. C. Silverman, "Tutorial on cyclic potentiodynamic polarization technique," Corrosion, vol. 299, pp. 1-21, 1998.