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 .
Ultra-High Performance Fibre-Reinforced Concretes (UHPFRC) have high mechanical strengths (fU,c > 150 MPa, fU,t > 6 MPa) and exhibit quasi-strain hardening in tension. Their very low permeability prevents the ingress of detrimental substances. In composite structural elements formed of normal strength reinforced concrete and Advanced Cementitious Materials (ACM), UHPFRC offer a high ...
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.
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
The stationary production processes offer precast construction optimal possibilities for applying high-performance concretes, for which remarkable developments have taken place (Fig. 1). Self-compacting concretes (SCC), high-performance concretes (HPC) and ultra-high performance concretes (UHPC) are representative for these.
Based on these investigations, a multi-cell box girder with stiffeners is proposed as a viable UHPC precast segmental bridge. The structural behavior, e.g. the deflection, the width of the joint opening after decompression, the compressive and shear stress distribution and the increase of tendon stress for this single span structure is analyzed ...
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Flexural behavior of ultra-high-performance fiber-reinforced concrete moment connection for precast concrete decks. This paper presents an experimental investigation of the flexural behavior of precast concrete moment connections filled with ultra-high-performance fiber-reinforced concrete (UHPFRC). The experimental program consisted of two phases.
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UHPC - Ultra High Performance Concrete. Looking for abbreviations of UHPC? It is Ultra High Performance Concrete. ... Enhancement of ultrahigh performance concrete material properties with carbon nanofiber. Kim, "Structural behavior of ultra high performance concrete beams subjected to bending," Engineering Structures, ...
Graybeal, B.A., Material property characterization of ultra-high performance concrete. 2006. Standard Test Method for Static Modulus of Elasticity and Poisson’s Ratio of Concrete in Compression. 2014, ASTM International. Graybeal, B.A., Flexural behavior of an ultrahigh-performance concrete I-girder.
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 ...
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 ...
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.
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,
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The concept of an equivalent plastic-hinge model was used to evaluate the lateral behavior of precast segmental ultra-high-performance concrete (UHPC) bridge columns. The columns consist of precast UHPC segments that were integrated by unbonded post-tensioning (PT) tendons and complemented with energy dissipation (ED) bars.
Cyclic loading tests were carried out to research seismic behavior of precast segmental ultrahigh-performance fiber-reinforced concrete (UHPFRC) bridge column with unbonded posttensioned (PT) tendons.
This thesis presents the test results of a study on flexural and shear behavior of Ultra-High-Performance Fiber-Reinforced concrete (UHP-FRC) beams, reinforced with Grade 60 steel (ASTM A615/A615M), Grade 100 steel (ASTM A1035/A1035M) and Basalt fiber reinforced polymer (BFRP) bars.
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 …
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Jan 16, 2015 · Charron J-P, Niamba E, Massicotte B. 2011. Static and dynamic behavior of high- and ultrahigh-performance fiber-reinforced concrete precast bridge parapets. Journal of Bridge Engineering, ASCE 16 (3): 413-421 Crossref, Google Scholar.
Structural Behavior of Waffle Bridge Deck Panels and Connections of Precast Ultra-High-Performance Concrete
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Structural Behavior of Precast Ultra-High Performance Fiber Reinforced Concrete (UHPFRC) Cantilever Retaining Walls: Part I - Analysis and Design Procedures and Environmental Impact Calculations (EIC)
This document is the product of the graduation project „Ultra High Performance Concrete in Large Span Shell Structures‟. The graduation project is performed at the Building & Structural Engineering section at the Faculty of Civil Engineering and Geosciences at Delft University of Technology and in cooperation with Zonneveld
• 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