Efectos del método de curado en la velocidad de corrosión del concreto reforzado a edad temprana

Published on Jul 30, 2007
· DOI :10.22517/23447214.5075
Abraham López1
Estimated H-index: 1
Facundo Almeraya1
Estimated H-index: 1
+ 2 AuthorsVíctor Orozco1
Estimated H-index: 1
The effect of three curing methods (immersion, waterproof membrane and steam) in the corrosion rate of reinforced concrete beams, w/c ratio of 0.40 and cover thickness of 4 cm, are exposed in synthetic water (ASTM 1141-98) during a total of 180 days. The corrosion rates are obtained by linear polarization (LPR) and electrochemical impedance spectroscopy (EIS). According to the obtained results, curing methods that they maintain a mayor time the wet state in the concrete have a best performance in the resistance to the corrosion.
#1S. Sathiyanarayanan (Central Electro Chemical Research Institute)H-Index: 32
#2Panjali Natarajan (Central Electro Chemical Research Institute)H-Index: 1
Last. G. Venkatachari (Central Electro Chemical Research Institute)H-Index: 24
view all 5 authors...
Abstract Various non-destructive quantitative techniques based on electrochemical methods for measuring the corrosion rate of steel embedded in concrete have been used. The most important is the linear polarization method. In practice, this method gives lower corrosion rates of steel in concrete due to inclusion of the resistance of the concrete in the measurement. In order to eliminate the resistance of the concrete, a galvanostatic pulse method is used. In this method the current pulse is appl...
47 CitationsSource
#1Robert A. CottisH-Index: 29
#1R.A. CottisH-Index: 14
Last. S. TurgooseH-Index: 9
view all 2 authors...
151 Citations
#1P. Castro (CINVESTAV)H-Index: 1
#1P. Castro (CINVESTAV)H-Index: 8
Last. M. Balancán (CINVESTAV)H-Index: 1
view all 3 authors...
Abstract Concrete cylinders with an embedded reinforcing bar and different water cement ratios were cured for different periods and then exposed in a salt spray chamber (according to ISO-9227). Cylinders from the same batches were also exposed to a marine atmosphere for 24 months at a location 50 m from the shoreline. In both exposures the corrosion rate, the corrosion potential and the chloride content close to the reinforcing bars were monitored as a function of the exposure time, in order to ...
38 CitationsSource
#1Jean-Paul Balayssac (INSA: Intelligence and National Security Alliance)H-Index: 18
#2Ch. H. Detriche (INSA: Intelligence and National Security Alliance)H-Index: 5
Last. J. Grandet (INSA: Intelligence and National Security Alliance)H-Index: 2
view all 3 authors...
Abstract Even if mix design (cement content, W/C ratio) has an effect on durability of concrete mixed with blended cement, curing conditions, particularly curing time, also affect concrete durability against carbonation. The choice of curing time depends on cement content, and must be adjusted to concrete design (28 day strength, W/C ratio). Concretes with a low cement content (or a high W/C ratio) must be cured longer than those having higher cement content. Finally, some correlations show that...
59 CitationsSource
#1D D MacdonaldH-Index: 1
#2Y A El-TantawyH-Index: 2
Last. M Urquidi-MacdonaldH-Index: 1
view all 4 authors...
The report examines the applicability of ultralow frequency ac impedance spectroscopy (ULFACIS) for characterizing corrosion of rebar in concrete. The study focuses on demonstrating that ULFACIS could be used to locate and characterize corrosion nondestructively in reinforced concrete structures. The study also established whether ULFACIS could be used to determine the polarization resistance, and hence the corrosion rate of the steel rebar. The impedance function was successfully demonstrated t...
8 Citations
Cited By1