Tran-SET 2020
Structural Testing of Ultra-High Performance Concrete Shear Keys in Concrete Bridge Superstructures
Publication: Tran-SET 2020
ABSTRACT
This research investigated the use of locally produced ultra-high-performance concrete (UHPC) as a grouting material to repair deteriorated shear keys. Shear keys are used in adjacent girder superstructures to produce monolithic behavior and load transfer across the structure. Shear key degradation can jeopardize the integrity of the structure. Transportation agencies have reported that 75% of distress in adjacent girder bridges is due to cracking and de-bonding along shear keys. Previous research has shown that locally produced UHPC has excellent mechanical and durability properties. UHPC has also been shown to have good bonding characteristics that are desirable in a potential grouting material. Full-scale testing was used to evaluate load-deflection behavior of channel girder assemblages with grouted shear keys. Results showed that while UHPC grout and non-shrink grout had similar mechanical performance, the non-shrink grout began to deteriorate faster under cyclic loading. Excellent bond was achieved with all grouts, even with minimal surface preparation.
Get full access to this article
View all available purchase options and get full access to this chapter.
ACKNOWLEDGMENTS
The authors would like to thank Tran-SET for funding the project, the New Mexico Department of Transportation for their support of UHPC research and collaboration, and BASF Chemical Company for their donations of silica fume and admixtures.
REFERENCES
ACI 546 (2004): Guide for the Selection of Materials for the Repair of Concrete. American Concrete Institute, Farmington Hills, MI.
ASTM C143, (2015): "Standard Test Method for Slump of Hydraulic-Cement Concrete," Annual Book of ASTM Standards, ASTM International, Conshohocken, PA.
ASTM C157 (2017): Length Change of Hardened Hydraulic-Cement Mortar and Concrete. Annual Book of ASTM Standards. ASTM International, Conshohocken, PA.
ASTM C882 (2013): Standard Test Method for Bond Strength of Epoxy-Resin Systems Used With Concrete By Slant Shear. Annual Book of ASTM Standards. ASTM International, West Conshohocken, PA.
ASTM C1583 (2013): Tensile Strength of Concrete Surfaces and the Bond Strength or Tensile Strength of concrete Repair and Overlay Materials by Direct Tension (Pull-off Method). Annual Book of ASTM Standards. ASTM International, West Conshohocken, PA.
ASTM C1856 (2017): Fabricating and Testing of Ultra-High Performance Concrete. Annual Book of ASTM Standards. ASTM International, Conshohocken, PA.
Attanayake, U. and Aktan, H. (2015) “First-Generation ABC System, Evolving Design, and Half a Century of Performance: Michigan Side-by-Side Box-Beam Bridges.” ASCE Journal of Performance of Constructed Facilities, 29(3): 1-13.
Graybeal, B. (2011), “Ultra-High Performance Concrete.” Public FHWA-HRT-11-038. FHWA, U.S. Department of Transportation.
Graybeal, B. (2014), “Design and Construction of Field-Cast UHPC Connections.” Public FHWA-HRT-14-084. FHWA, U.S. Department of Transportation.
Hussein, H., S. Sargand, and E. Steinberg, (2018), “Shape Optimization of UHPC Shear Keys for Precast, Prestressed, Adjacent Box-Girder Bridges.” ASCE Journal of Bridge Engineering, 23(4): 1-5.
LRFD (2012), “Bridge Design Specifications.” 6th ed. American Association of State Highway and Transportation Officials (AASHTO), Washington, D.C.
Montoya, K., (2010), “Feasibility of Using Ultra High Performance Concrete in New Mexico Bridge Girders.” M.S. thesis. New Mexico State University.
Newtson, C.M., B.D. Weldon, A.J. Al-Basha, M.P. Manning, W.K. Toledo, and L.D. Davila. (2018) Bridge Deck Overlays Using Ultra-High-Performance Concrete. Tran-SET final research report 17CNMS01. Transportation Consortium of South-Central States (Tran-SET).
Newtson, C.M., B.D. Weldon, E. Flores, Varbel, J., and W.K. Toledo (2019) UHPC Shear Keys in Concrete Bridge Superstructures. Tran-SET final research report 18CNMS01. Transportation Consortium of South-Central States (Tran-SET).
Ozyildirim, C. and G. Moruza. (2016) “High-Performance Grouting Materials in Shear Keys Between Box Beams.” Transportation Research Record: Journal of the Transportation Research Board, Volume:.
Weldon, B.D., D.V. Jauregui, C.M. Newtson, C.W. Taylor, K.F. Montoya, S. Allena, J. Muro, M. Tahat, E. Lyell, and E.T. Visage. (2012) Feasibility Analysis of Ultra-High-Performance Concrete for Prestressed Concrete Bridge Applications. Report NM09MCS-01, New Mexico Department of Transportation.
Yuan, J. and B. Graybeal. (2016) “Full-Scale Testing of Shear Key Details for Precast Concrete Box-Beam Bridges.” ASCE Journal of Bridge Engineering, 21(9): 1-13.
Information & Authors
Information
Published In
Tran-SET 2020
Pages: 266 - 277
Editors: Craig Newtson, Ph.D., New Mexico State University, Susan Bogus Halter, Ph.D., University of New Mexico, and Marwa Hassan, Ph.D., Louisiana State University
ISBN (Online): 978-0-7844-8330-5
Copyright
© 2021 American Society of Civil Engineers.
History
Published online: Jan 12, 2021
Published in print: Jan 12, 2021
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.