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51318-11133-Spatial evaluation of the corrosion condition of reinforced concrete structures

Picture for Spatial evaluation of the corrosion condition of reinforced concrete structures
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This paper presents a case study (an abutment wall built in 1961)for updating the corrosion probability with half-cell potential measurement data.

 

Product Number: 51318-11133-SG
Author: Sylvia Kessler
Publication Date: 2018
Industry: Science of Corrosion
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$20.00
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Reinforced concrete structures form the backbone of our aging infrastructure. Most of these existing structures have experienced damage or deterioration. As part of ongoing condition assessment it is necessary to identify the extent, nature, cause and prognosis of deterioration using a range of tools and methods, including prediction models. Deterioration of reinforced concrete structures is often attributed to reinforcement corrosion initiated due to application of deicing salt during wintertime or chlorides from marine environment. Thus, corrosion detection, e.g. half-cell potential measurement, is of major importance for condition assessment. The information gained during corrosion detection can be used for updating the probabilistic service life prediction at time of inspection. Major impact on the accuracy of the updated service life prediction besides the probabilistic model itself is the reliability of the used inspection methods. Since first results on the reliability of half-cell potential measurements are published this data can be used to update corrosion probability taking into account not only the temporal aspect but also the spatial variability of reinforcement corrosion. This paper presents a case study for updating the corrosion probability with half-cell potential measurement data.

Key words: Corrosion, Reinforced Concrete Structures, Corrosion Detection, Probabilistic Service Life

Reinforced concrete structures form the backbone of our aging infrastructure. Most of these existing structures have experienced damage or deterioration. As part of ongoing condition assessment it is necessary to identify the extent, nature, cause and prognosis of deterioration using a range of tools and methods, including prediction models. Deterioration of reinforced concrete structures is often attributed to reinforcement corrosion initiated due to application of deicing salt during wintertime or chlorides from marine environment. Thus, corrosion detection, e.g. half-cell potential measurement, is of major importance for condition assessment. The information gained during corrosion detection can be used for updating the probabilistic service life prediction at time of inspection. Major impact on the accuracy of the updated service life prediction besides the probabilistic model itself is the reliability of the used inspection methods. Since first results on the reliability of half-cell potential measurements are published this data can be used to update corrosion probability taking into account not only the temporal aspect but also the spatial variability of reinforcement corrosion. This paper presents a case study for updating the corrosion probability with half-cell potential measurement data.

Key words: Corrosion, Reinforced Concrete Structures, Corrosion Detection, Probabilistic Service Life

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