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Keywords: deck cracking, transverse.

Summary

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 [1]. 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.

References

1: ACI Committee 224, "Control of Cracking in Concrete Structures (ACI 224R-01)", American Concrete Institute, Farmington Hills, MI, 2001.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 96 PROCEEDINGS OF THE THIRTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: B.H.V. Topping and Y. Tsompanakis Paper 187 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 ²Mechanical and Civil Engineering, Embry-Riddle Aeronautical University, Daytona, United States of America ³Civil Engineering, Ohio Northern University, United States of America doi:10.4203/ccp.96.187 purchase the full-text of this paper Full Bibliographic Reference for this paper 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. Summary 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 [1]. 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. References 1 ACI Committee 224, "Control of Cracking in Concrete Structures (ACI 224R-01)", American Concrete Institute, Farmington Hills, MI, 2001. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £130 +P&P)
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