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Proceedings Paper

Monitoring durability of new concrete bridge decks
Author(s): Haluk M. Aktan; Ismail Ozgur Yaman; John F. Staton
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Paper Abstract

The ND durability monitoring procedure, which measures the soundness of field concrete, is based on the fundamental relationship between ultrasonic pulse velocity (UPV) and permeability of an elastic medium. An experimental study documented adequate sensitivity between UPV and concrete permeability. The durability monitoring procedure is based on a parameter developed as part of this study and called paste quality loss (PQL) which is computed from the probability density function parameters of ultrasonic pulse velocity measurements taken from standard and field concrete. For PQL computation, measurements taken on standard concrete specimens, which are made from field concrete mixture, are compared to field measurements. The verification tests on 1000 mm x 1500 mm x 230 mm lab-deck specimens indicated that the PQL parameter computed from the UPV measurements as early as the 28th day is a good predictor of soundness. The UPV measurements made at increasing age of concrete very clearly document the rapid loss of soundness of improperly cured concrete decks. Deck replacement projects on three NHS bridges were used in the implementation of durability monitoring by PQL (paste quality loss) evaluation. The respective 56-day PQL's were calculated as 15%, 31% and 9% indicating a significant variability in the three bridges.

Paper Details

Date Published: 3 August 2001
PDF: 9 pages
Proc. SPIE 4337, Health Monitoring and Management of Civil Infrastructure Systems, (3 August 2001); doi: 10.1117/12.435579
Show Author Affiliations
Haluk M. Aktan, Wayne State Univ. (United States)
Ismail Ozgur Yaman, Wayne State Univ. (United States)
John F. Staton, Michigan Department of Transportation (United States)

Published in SPIE Proceedings Vol. 4337:
Health Monitoring and Management of Civil Infrastructure Systems
Steven B. Chase; A. Emin Aktan, Editor(s)

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