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PROCEEDINGS OF THE THIRTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING
Edited by: B.H.V. Topping and Y. Tsompanakis
Investigating the Problem of Transverse Cracking of Bridge Decks
A. ElSafty1, V. Vargas1, N.M. Jackson1, F. Barsoum2 and A. Abdel-Mohti3
1Civil Engineering, University of North Florida, Jacksonville, United States of America
A. ElSafty, V. Vargas, N.M. Jackson, F. Barsoum, A. Abdel-Mohti, "Investigating the Problem of Transverse Cracking of Bridge Decks", in B.H.V. Topping, Y. Tsompanakis, (Editors), "Proceedings of the Thirteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 187, 2011. doi:10.4203/ccp.96.187
Keywords: deck cracking, transverse.
Many bridge decks constantly experience transverse cracking that leads to deterioration. The causes of early age cracking are primarily attributed to plastic shrinkage, temperature effects, autogenous shrinkage and drying shrinkage . The cracking of bridge decks not only creates unsightly aesthetic conditions but also greatly reduces durability, leads to a loss of functionality, loss of stiffness and ultimately the loss of structural safety. The cracks can be influenced by material characteristics, casting sequence, formwork, climate conditions, geometry and are time dependent.
In this paper, the researchers investigated a database of bridge information that includes, crack location, concrete mix ingredients and properties, construction methods, superstructure type, possible causes for cracking, and other relevant data for selected bridges in Florida. The study helps gain a better more up-to-date understanding of early concrete cracking of bridge decks and overlays, identifying the key factors which cause early concrete cracking in bridge decks, investigating whether live-load deflection limits or vibration control are important factors in bridge deck cracking, identifying suitable materials for crack sealing with the most suitable materials with ability to span cracks of various widths. The benefits and limitations of each material were presented.
This study involved experimental and field testing to investigate the early age transverse cracking of bridge decks and how to mitigate them. Our research identified suitable materials for crack sealing showing their ability to span cracks of various widths and achieving performance criteria such as penetration depth, bond strength, elongation, and type of sealant.
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