Yang, K, Basheer, PAM, Bai, Y et al. (2 more authors) (2014) Development of a new in situ test method to measure the air permeability of high performance concretes. NDT & E International, 64. In-print. ISSN 0963-8695
Abstract
Although several in situ techniques, including the Autoclam Permeability System, are available to examine normal concretes (NCs) for this purpose, none are sufficiently sensitive to quantify and distinguish relative high performance concrete (HPC) performance. Therefore, to assess the HPC performance characteristics using the Autoclam air permeability test methodology, two key modifications were investigated and a new test protocol developed. The first modification considered a reduced volume of compressed air applied to the test area (named LV test), and the second an increased test area (named A-75). The reliability of the proposed modifications was investigated by comparing against a laboratory-based gas permeability test method (RILEM air permeability test). Surface resistivity and relative humidity were assessed to evaluate the influence of moisture conditions on in situ air permeability test results. A strong correlation between LV test and RILEM air permeability test results was found when the free moisture near concrete surface regions (up to 20 mm) was removed. It was concluded that the LV test exhibits strong potential to become an established method for assessing in situ HPC permeability.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2014 Published by Elsevier Ltd. All rights reserved. This is an author produced version of a paper published in NDT & E International. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | In situ air permeability test; High performance concrete; Relative humidity; Surface resistivity; RILEM gas permeability test; Autoclam air permeability test |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) > Institute for Resilient Infrastructure (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 07 Apr 2016 10:44 |
Last Modified: | 11 Apr 2017 01:49 |
Published Version: | http://dx.doi.org/10.1016/j.ndteint.2014.02.005 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.ndteint.2014.02.005 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:97590 |