Searching for just a few words should be enough to get started. If you need to make more complex queries, use the tips below to guide you.
Article type: Research Article
Authors: William, Gergis W. | Shoukry, Samir N. | Riad, Mourad Y.
Affiliations: Department of Civil & Environmental Engineering, West Virginia University, Morgantown, WV, USA
Note: [] Corresponding author. Email: Gergis.William@mail.wvu.edu
Abstract: This paper describes the instrumentation and test results of a reinforced concrete bridge deck constructed on three-span continuous steel girders in Evansville, West Virginia. An instrumentation system consisting of 232 sensors is developed and implemented specifically to measure strains and temperature in concrete deck, strains in longitudinal and transverse rebar, the overall contraction and expansion of concrete deck, and crack openings. Data from all sensors are automatically collected every 30 minutes starting at the time of placing the deck. The results indicated that elevated longitudinal stress due to constrained drying shrinkage is the main factor responsible for crack initiation during the first two days after concrete placement. Several factors contribute to the deterioration of the deck: (1) thermal stresses developed in the deck because of the constraining effects of the stay-in-place forms and shear studs; (2) non-uniform curing of the concrete along the deck; (3) in-plane temperature variations along the deck; (4) slippage of the rebar inside the concrete.
Keywords: Early age cracks, Bridge decks, Bridge instrumentation, Concrete shrinkage, Thermal stresses
DOI: 10.1080/15732480500483828
Journal: Bridge Structures, vol. 1, no. 4, pp. 379-396, 2005
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
USA
Tel: +1 703 830 6300
Fax: +1 703 830 2300
sales@iospress.com
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
IOS Press
Nieuwe Hemweg 6B
1013 BG Amsterdam
The Netherlands
Tel: +31 20 688 3355
Fax: +31 20 687 0091
info@iospress.nl
For editorial issues, permissions, book requests, submissions and proceedings, contact the Amsterdam office info@iospress.nl
Inspirees International (China Office)
Ciyunsi Beili 207(CapitaLand), Bld 1, 7-901
100025, Beijing
China
Free service line: 400 661 8717
Fax: +86 10 8446 7947
china@iospress.cn
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
如果您在出版方面需要帮助或有任何建, 件至: editorial@iospress.nl