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Evaluation of corrosion loss of steel reinforcing bars in concrete using linear polarisation resistance measurements
The actual and predicted weight loss data for a number of mild steel bars contained in OPC concrete, subjected to three different environmental regimes and monitored using potentiostaticaly controlled linear polarisation resistance measurements are reported. The three sets of reinforced concrete specimens, were subjected to either chloride induced corrosion, carbonation induced corrosion and a control environment with no corrosion. Each set of specimens were exposed to a daily regime of wetting and drying in a controlled environment for a duration of 1700 days. Two sets of testing were conducted at around 1200 days and 1700 days. Prior to casting the mild steel bars were individually cleaned and weighed. The weight loss for each bar due to corrosion was recorded at the end of the period of exposure. Instantaneous linear polarisation resistance corrosion measurements were taken on each bar at regular intervals for the duration of the exposure time. These resistances measurements were then integrated to evaluate a predicted total weight loss. The results show that the weight loss evaluated from experimental linear polarisation resistance measurements give a significant over-estimate of the actual weight losses recorded.
Evaluation of corrosion loss of steel reinforcing bars in concrete using linear polarisation resistance measurements
The actual and predicted weight loss data for a number of mild steel bars contained in OPC concrete, subjected to three different environmental regimes and monitored using potentiostaticaly controlled linear polarisation resistance measurements are reported. The three sets of reinforced concrete specimens, were subjected to either chloride induced corrosion, carbonation induced corrosion and a control environment with no corrosion. Each set of specimens were exposed to a daily regime of wetting and drying in a controlled environment for a duration of 1700 days. Two sets of testing were conducted at around 1200 days and 1700 days. Prior to casting the mild steel bars were individually cleaned and weighed. The weight loss for each bar due to corrosion was recorded at the end of the period of exposure. Instantaneous linear polarisation resistance corrosion measurements were taken on each bar at regular intervals for the duration of the exposure time. These resistances measurements were then integrated to evaluate a predicted total weight loss. The results show that the weight loss evaluated from experimental linear polarisation resistance measurements give a significant over-estimate of the actual weight losses recorded.
Evaluation of corrosion loss of steel reinforcing bars in concrete using linear polarisation resistance measurements
Bewertung des Korrosionsabtrags an Armierungsstahl in Beton mittels linear polarisierter Widerstandsmessungen
Law, D.W. (author) / Cairns, J.J. (author) / Millard, S.G. (author) / Bungey, J.H. (author)
2003
8 Seiten, 5 Bilder, 4 Tabellen, 6 Quellen
(Nicht paginiert)
Conference paper
Storage medium
English
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