A method of ranking the aggressive nature of chloride contaminated concrete |
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Authors: | G Sergi G K Glass |
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Affiliation: | a Corrosion and Concrete Repair, Building Research Establishment, Watford, WD2 7JR, UK;b Department of Civil and Environmental Engineering, Imperial College of Science, Technology and Medicine, Imperial College Road, London, SW7 2BU, UK |
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Abstract: | In this work, previously reported titration data obtained on cement pastes and concretes are analysed. It is postulated that the inhibitive nature of concretes may be quantified by titrating a ground suspension to the endpoint indicated by phenolphthalein while the aggressive chloride content may be determined from the soluble chloride at the endpoint of this titration. Thus, the aggressive nature of chloride contaminated concrete may be ranked using the ratio of the extracted chloride to acid neutralisation capacity. Not only is there a theoretical justification for this, but it is relatively simple to determine. |
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Keywords: | Acid neutralisation Buffering Cement Chloride threshold Concrete Corrosion Steel |
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