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http://dx.doi.org/10.14773/cst.2016.15.1.18

A Study on Accelerated Corrosion Test by Combined Deteriorating Action of Salt Damage and Freeze-Thaw  

Park, Sang-Soon (Department of Civil Engineering, Sangmyung University)
So, Byung-Tak (Department of Civil Engineering, Sangmyung University)
Publication Information
Corrosion Science and Technology / v.15, no.1, 2016 , pp. 18-27 More about this Journal
Abstract
In this study, the accelerated corrosion test by combined deteriorating action of salt damage and freeze-thaw was investigated. freeze-thaw cycle is one method for corrosion testing; corrosion initiation time was measured in four types of concrete samples, i.e., two samples mixed with fly ash (FA) and blast furnace slag (BS), and the other two samples having two water/cement ratio (W/C = 0.6, 0.35) without admixture (OPC60 and OPC35). The corrosion of rebar embedded in concrete occurred most quickly at the $30^{th}$ freeze-thaw cycle. Moreover, a corrosion monitoring method with a half-cell potential measurement and relative dynamic elastic modulus derived from resonant frequency measures was conducted simultaneously. The results indicated that the corrosion of rebar occurred when the relative dynamic elastic modulus was less than 60%. Therefore, dynamic elastic modulus can be used to detect corrosion of steel bar. The results of the accelerated corrosion test exhibited significant difference according to corrosion periods combined with each test condition. Consequently, the OPC60 showed the lowest corrosion resistance among the samples.
Keywords
accelerated corrosion test; artificial seawater; relative dynamic modulus of elasticity; concrete;
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Times Cited By KSCI : 3  (Citation Analysis)
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1 H. W. Song, S. Velu, Int. J. Electrochem. Sci., 2, 1 (2007).
2 B. H. Oh, Y. K. Cho, S. W. Cha, W. K. Chung, J. Korea Concr. Inst., 8, 201 (1996).
3 S. H. Bae, K. M. Lee, J. S. Kim, Y. S. Kim, Journal of the Korean Society of Civil Engineers, 27, 771 (2007).
4 S. K. Yang, D. S. Kim, T. S. Um, J. R. Lee, K. Kono, Journal of Korea Concrete Institute, 20, 415 (2008).   DOI
5 KS F 2599-1, Standard test method for the accelerated corrosion of reinforced concrete (autoclave method), Korean Industrial Standards (2008).
6 KS F 2599-2, Standard test method for the accelerated corrosion of reinforced concrete (wet-drying cycles method), Korean Industrial Standards (2008).
7 S. S. Park, J. W. Jung, j. Korea Inst. Struct. Maint. Insp., 18, 93 (2014).
8 S. S. Park, M. W. Kim, J. Rec. Const. Resources, 1, 211 (2013).
9 S. S. Park, M. W. Lee, Corros. Sci. Tech., 13, 6 (2014).   DOI
10 KS F 2437, Standard test method for dynamic modulus of elasticity, rigidity and dynamic Poisson's ratio of concrete specimens by resonance vibration, Korean Industrial Standards (2013).
11 KS F 2405, Standard test method for compressive strength of concrete, Korean Industrial Standards (2010).
12 KS F 2711, Testing method for resistance of concrete to chloride ion penetration by electrical conductance, Korean Industrial Standards (2012).
13 ASTM C 876-91, Standard Test Method for Half-cell Potentials of Un-coated Reinforcing Steel in Concrete (1999).
14 R. Romagnoli, R. O. Batic, V. F. Vetere, J. D. Sota, I. T. Lucchini, R. O. Carbonari, Anti-Corros. Method M., 49, 11 (2002).   DOI