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Zhengyu Liu, B. Phares, Weizhuo Shi, B. Shafei (2020)
Full-Scale Evaluation of an Innovative Joint Design between Adjacent Box BeamsTransportation Research Record, 2674
J. Yuan, B. Graybeal (2016)
Full-Scale Testing of Shear Key Details for Precast Concrete Box-Beam BridgesJournal of Bridge Engineering, 21
Dooyeol Yoo, J. Park, Sung Kim, Y. Yoon (2014)
Influence of reinforcing bar type on autogenous shrinkage stress and bond behavior of ultra high performance fiber reinforced concreteCement & Concrete Composites, 48
Mahsa Farzad, Amir Sadeghnejad, Siavash Rastkar, A. Moshkforoush, A. Azizinamini (2020)
A theoretical analysis of mechanical and durability enhancement of circular reinforced concrete columns repaired with UHPCEngineering Structures, 209
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Ali Semendary, D. Svecova (2020)
Interfacial Parameters for Bridge Connections at High-Strength Concrete–Ultrahigh-Performance Concrete InterfaceJournal of Materials in Civil Engineering, 32
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Interfacial bond properties between normal strength concrete substrate and ultra-high performance concrete as a repair materialConstruction and Building Materials, 235
Ali Semendary, Eric Steinberg, K. Walsh, E. Barnard (2019)
Effects of Temperature Distributions on Thermally Induced Behavior of UHPC Shear Key Connections of an Adjacent Precast Prestressed Concrete Box Beam BridgeJournal of Bridge Engineering
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Adjacent Box Girders without Internal Diaphragms or Post-tensioned JointsPci Journal, 56
Dooyeol Yoo, J. Park, Sung Kim, Y. Yoon (2013)
Early age setting, shrinkage and tensile characteristics of ultra high performance fiber reinforced concreteConstruction and Building Materials, 41
Mahsa Farzad, Saiada Fancy, K. Lau, A. Azizinamini (2019)
Chloride Penetration at Cold Joints of Structural Members with Dissimilar Concrete Incorporating UHPCInfrastructures
Ali Semendary, Moses Akentuna, Eric Steinberg, Waleed Hamid (2019)
Influence of Heating and Cooling Temperature on the Performance of Tensile Interfacial Bond between High Strength Concrete and Ultra High Performance Concrete (UHPC)Second International Interactive Symposium on UHPC
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Mahsa Farzad, M. Shafieifar, A. Azizinamini (2019)
Experimental and numerical study on bond strength between conventional concrete and Ultra High-Performance Concrete (UHPC)Engineering Structures
Zhengyu Liu, B. Phares (2019)
Small-Scale Investigation on Wide Longitudinal Joints Filled with Shrinkage-Compensated Concrete for Adjacent Box Beam BridgesJournal of Bridge Engineering, 24
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Ali Semendary, K. Walsh, Eric Steinberg (2017)
Early-Age Behavior of an Adjacent Prestressed Concrete Box-Beam Bridge Containing UHPC Shear Keys with Transverse DowelsJournal of Bridge Engineering, 22
Adjacent precast prestressed concrete box beam bridges have been widely utilized for decades and have shown satisfactory performance. However, significant issues regarding to the longitudinal shear key cracking have been noted by bridge maintenance personnel. The cracks are typically initiated at beam-shear key interfaces due to shrinkage and temperature and propagate due to applied load. Recently, ultra-high-performance concrete (UHPC) was employed in the shear keys with the anticipation to prevent joint cracking. Although the field-collected data at early age from bridge utilizing UHPC shear keys indicated promising performance, the results only reflected the early age joint behavior at locations which were instrumented during the field test. In the current study, a 3D finite element (FE) model was developed to calculate the early age stresses due to shrinkage and temperature. The results indicated that the UHPC material associated with a specific shear key configuration created a “self-locked” phenomenon that generated compression on the upper level shear key. The early age tensile stress during the first couple of days near the end of the joint was relatively small compared to the tensile strength of UHPC material. Although the interface had sufficient capacity to resist the early age stresses, it is still a critical component and needs to be designed with sufficient capacity.
Advances in Structural Engineering – SAGE
Published: Feb 1, 2022
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