Chloride diffusion coeficient determination for specifications
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|Title:||Chloride diffusion coeficient determination for specifications||Authors:||McNally, Ciaran
Richardson, Mark G.
|Permanent link:||http://hdl.handle.net/10197/2441||Date:||2005||Abstract:||The chloride diffusion resistance of reinforced concrete can have a major influence on durability. A move to performance-based specifications is therefore to be encouraged in the case of highway structures, where the client expects a long trouble-free service life. The introduction to practice of service life modelling and performance-based specifications requires a parallel development in user-friendly test methods. This paper reports on experience with three techniques used to determine apparent chloride diffusion coefficients: long-term immersion tests with chloride analysis by Volhard titration, tests of medium duration with chloride analysis by an internal-calibration potentiometric method and short-term Nordtest rapid migration tests. Concrete compositions tested included Portland cement, pfa and ggbs mixes. It was found that medium and long-term tests were consistent, but care is needed with early age tests.||Funding Details:||Not applicable||Type of material:||Conference Publication||Publisher:||Thomas Telford||Copyright (published version):||2005 Thomas Telford Ltd||Keywords:||Chloride ingress;Diffusion coefficients;Test methods||Subject LCSH:||Chlorides--Diffusion rate
|Language:||en||Status of Item:||Peer reviewed||Is part of:||Dhir, R. K. (ed.). Proceedings of the 6th International Congress on Global Construction||Conference Details:||Presented at the 6th International Congress on Global Construction, Dundee, Scotland|
|Appears in Collections:||Critical Infrastructure Group Research Collection|
Civil Engineering Research Collection
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