Repeatability and Reliability of New Air and Water Permeability Tests for Assessing the Durability of High-Performance Concretes
Publication: Journal of Materials in Civil Engineering
Volume 27, Issue 12
Abstract
This paper reports on the accuracy of new test methods developed to measure the air and water permeability of high-performance concretes (HPCs). Five representative HPC and one normal concrete (NC) mixtures were tested to estimate both repeatability and reliability of the proposed methods. Repeatability acceptance was adjudged using values of signal-noise ratio (SNR) and discrimination ratio (DR), and reliability was investigated by comparing against standard laboratory-based test methods (i.e., the RILEM gas permeability test and BS EN water penetration test). With SNR and DR values satisfying recommended criteria, it was concluded that test repeatability error has no significant influence on results. In addition, the research confirmed strong positive relationships between the proposed test methods and existing standard permeability assessment techniques. Based on these findings, the proposed test methods show strong potential to become recognized as international methods for determining the permeability of HPCs.
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Acknowledgments
The authors gratefully acknowledge the financial support provided by the U.K. Engineering and Physical Science Research Council (EPSRC) and Queen’s University Belfast for carrying out the investigation reported in this paper. The support from University of Leeds, Chongqing University, and University of Ulster during the preparation of this publication is also gratefully acknowledged.
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Published In
Journal of Materials in Civil Engineering
Volume 27 • Issue 12 • December 2015
Copyright
This work is made available under the terms of the Creative Commons Attribution 4.0 International license, http://creativecommons.org/licenses/by/4.0/.
History
Received: Jul 12, 2014
Accepted: Dec 15, 2014
Published online: May 6, 2015
Discussion open until: Oct 6, 2015
Published in print: Dec 1, 2015
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