Chloride diffusion coeficient determination for specifications

Title: Chloride diffusion coeficient determination for specifications
Authors: McNally, Ciaran
Richardson, Mark G.
Evans, Conor
Callanan, Thomas
Permanent link:
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 ingressDiffusion coefficientsTest methods
Subject LCSH: Chlorides--Diffusion rate
Reinforced cement--Testing
Reinforced cement--Specifications
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
ISBN: 0727733877
Appears in Collections:Critical Infrastructure Group Research Collection
Civil Engineering Research Collection

Show full item record

Page view(s) 20

checked on May 25, 2018

Download(s) 5

checked on May 25, 2018

Google ScholarTM



This item is available under the Attribution-NonCommercial-NoDerivs 3.0 Ireland. No item may be reproduced for commercial purposes. For other possible restrictions on use please refer to the publisher's URL where this is made available, or to notes contained in the item itself. Other terms may apply.