Structural Behavior of a Prototype UHPC Pi-Girder. This document is a technical summary of the unpublished Federal Highway Administration report, Structural Behavior of a Prototype Ultra-High Performance Concrete Pi-Girder, available only through the National Technical Information Service (NTIS).
Structural Performance of Precast Prestressed Bridge Girders Built with Ultra High Performance Concrete
In this paper, the results of basic tests conducted to evaluate the flexural behavior of lap-spliced joints that exploit the remarkable bonding performance of ultra-high performance concrete (UHPC) are presented. The effects of varying the lap-spliced length and joint length on the flexural behavior of the test members were examined.
The use of precast elements is gaining attention owing to inherent benefits of accelerated construction. Designing an economical connection is one of the main concerns for these structures. New improved materials such as ultra-high-performance concrete (UHPC) with superior characteristics can provide solutions for joining precast concrete elements.
Ultrahigh-performance fiber-reinforced concrete (UHPFRC) is an innovative material in the field of bridge engineering. With superior mechanical characteristics, this new material reduced the structural self-weight and extended the span of modern bridges. A series of tests should be conducted to establish reliable design rules for UHPFRC structures. This paper aimed at determining the ...
Yu‐Chen Ou, Mu‐Sen Tsai, Kuo‐Chun Chang and George C. Lee, Cyclic behavior of precast segmental concrete bridge columns with high performance or conventional steel reinforcing bars as energy dissipation bars, Earthquake Engineering & Structural Dynamics, 39, 11, (1181-1198), (2010).
In order to analyze seismic behavior of large-scale exterior joints of high-rise precast concrete structures, an experimental study on seismic performances of precast beam to column exterior joints with composite slab was conducted with large full-scale models. The failure pattern, hysteretic characteristic, skeleton curve, displacement ductility and energy dissipation, were …
Behavior of Ultra-High Performance Concrete Connections between Precast Bridge Deck Elements. The Federal Highway Administration’s ongoing research program into the use of Ultra-High Performance Concrete (UHPC) in highway bridges has recently begun focusing on deck-level connections between modular precast components.
Ultra-High Performance Concrete: The next sections discuss in full details the definition and characteristics of UHPC, which is the main focus of this study. High Volume Fly Ash Concrete (HVFA): This is a family of concrete materials where a large portion of the cement is replaced with fly ash to minimize the negative environmental impacts
Structural behavior of profiled dry joints between precast ultra‐high performance fiber reinforced concrete elements. Vincent Oettel, Technische Universität Braunschweig, iBMB – Division of Concrete Construction, Beethovenstraße 52, 38106 Braunschweig, Germany.
An experimental program investigating the flexural behavior of an innovative dovetail ultra-high performance concrete joint for connecting precast ultra-high performance concrete slabs in composite bridges is reported in this study.
structural design. A large portion of this effort has been directed toward its use in precast, prestressed concrete appli-cations, particularly for bridges. The U.S. Federal Highway Administration launched a project in 2001 that focused on familiarizing the concrete and transportation industries with UHPC and emphasized its performance in precast,
High-performance concrete (HPC) is concrete that has been designed to be more durable and, if necessary, stronger than conventional concrete. HPC mixtures are composed of essentially the same materials as conventional concrete mixtures, but the proportions are designed, or engineered, to provide the strength and durability needed for the structural and environmental requirements of the project.
Monolithic and hybrid precast bridge parapets in high and ultra-high performance fibre reinforced concretes. F. Duchesneau, J.-P. Charron, B. Massicotte . Research Center on Concrete Infrastructures - CRIB, Group for Research in Structural Engineering, École Polytechnique de Montréal, Montréal, QC H3C 3A7, Canada.
In this study, the axial compressive behavior of FRP confined ultra-high performance fiber-reinforced concrete (UHPFRC) has been experimentally investigated. Based on the test results, a comprehensive assessment of the parameters that may influence the axial compressive behavior of FRP confined UHPFRC is carried out.
• Precast/Prestressed Structural Systems • Soil Foundation Structural Interaction(SFSI) •Ultra High Performance Concrete(UHPC) • Analytical Simulation of Structural Behavior • Large-Scale Testing of Structures • Wind Effects on Structures • Wind Energy • Connection Details and Field Implementation of UHPC Piles
This study was conducted to investigate the effects of key structural parameters on the shear behavior of non-prestressed ultra-high-performance concrete (UHPC) beams passively reinforced with high-strength steel bars.
Jun 13, 2019 · Because of these exceptional performance characteristics, UHPC has the potential to provide numerous benefits to the structural precast concrete industry, from enabling structural designs with smaller cross-sections, greater prestressing and reduced conventional reinforcing, to allowing the production of longer-span elements with fewer ...
Ultra-High Performance Concrete (UHPC) is a cementitious, concrete material that has a minimum specified compressive strength of 17,000 pounds per square inch (120 MPa) with specified durability, tensile ductility and toughness requirements; fibers are generally included in the mixture to achieve specified requirements.
Structural Behavior of Ultra High Performance Concrete Beams Without Stirrups. This paper presents comparative behavior of Ultra-High Performance Fiber Reinforced Concrete (UHPFRC) beams under flexural and shear loading. Four large scale UHPFRC beams with different reinforcement ratios were tested under dominant shear and flexure loading.
Almansour, H., and Lounis, Z. 2008. Structural performance of precast prestressed bridge girder built with ultra high performance concrete, In Proceedings of the Second International Symposium on UHPC, Kassel, Germany, pp. 823–830. Google Scholar
must be cost effective through a structure’s life cycle Concrete is the most widely used material in building construction. Within the last few decades, research has been conducted on what is known as Ultra High Performance Concrete (UHPC). The term includes a broad range of materials such as defect-free, dense particle, engineered
Prestressed, high-performance precast elements consisting of ultra-high performance spun concrete and high-strength reinforcement were developed as part of a joint research project of iBMB of the TU Braunschweig with the collaboration of the Europoles company; the elements were optimized for being used as extra-high voltage poles and constitute ...
Structural Behavior of Precast Ultra-High Performance Fiber Reinforced ... (SFR-RPC), concrete cantilever retaining walls, structural behavior, full-scale experimental tests, eurocode 7 ...
2. Ultrahigh-Performance Fibre-Reinforced Concrete UHPFRC is a highly dense, steel fibre-reinforced cementitious composite material having compressive strength in excess of 170 MPa; a tensile strength of over 8 MPa; and a flexural strength of more than 30 MPa .
Behavior of Field-Cast Ultra High Performance Concrete Bridge Deck Connections under Cyclic and Static Structural Loading. National Technical Information Service accession PB2011-101995. McLean, VA: FHWA. Graybeal, B. 2012. Development of a Field-Cast Ultra-High Performance Concrete Composite Connection Detail for Precast Concrete Bridge Decks.
National Precast Concrete Association • precast.org 3 INTRODUCTION A s a material on the leading edge of concrete innovation, ultra high performance concrete (UHPC) provides a new technology to expand a precaster’s business with new products and solutions. The material’s combination of superior
Sandwich panels comprising prefabricated ultra-high performance concrete (UHPC) composites can be used as eco-friendly and multi-functional structural elements. To improve the structural and thermal performance of composite sandwich panels, combinations of UHPC and expanded polystyrene (EPS) beads were investigated. High-performance expanded polystyrene concrete (HPEPC) was tested with various ...
6/1/2015 · Read "Behavior of ultra-high performance fiber reinforced concrete columns under blast loading, International Journal of Impact Engineering" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
This study investigated the structural performance of field-cast UHPC connections for modular bridge deck components. The transverse and longitudinal connection specimens simulated the connections between precast deck panels and the connections between the top flanges of deck-bulb-tee girders, respectively.