Journal ArticleDOI
UHPC: A Game-Changing Material for PCI Bridge Producers
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TLDR
Inspired by Dura Technology founder and chief executive officer Yen Lei Voo, six PCI representatives in conjunction with the International Federation for Structural Concrete Task Group 6.5, Precast Concrete Bridges, took a TechnoQuest trip to Malaysia, where they investigated Voo's company.Abstract:
Ultra-high-performance concrete (UHPC) has become a prominent subject in the construction industry, and particularly the precast, prestressed concrete industry, for connections of components, as well as various pilot projects using prefabricated components. The well-documented and researched material characteristics of UHPC offer a new suite of bridge solutions that have yet to be fully implemented by PCI producers. Inspired by Dura Technology founder and chief executive officer Yen Lei Voo, six PCI representatives in conjunction with the fib (International Federation for Structural Concrete) Task Group 6.5, Precast Concrete Bridges, took a TechnoQuest trip to Malaysia, where they investigated Voo’s company. The purpose of the visit was to observe a facility solely focused on fabricating UHPC components for bridges and other heavy civil structures. The idiosyncrasies of the manufacturing facility illustrated many similarities to the current means and methods of fabrication in the United States by PCI bridge producers, aside from the material difference. The observations of the group, both in terms of means and methods as well as possible advantages for future endeavors in the United States, are presented.read more
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Cyclic loading test of self-centering precast segmental unbonded posttensioned UHPFRC bridge columns
TL;DR: In this article, three 1/3-scale precast segmental bridge columns, manufactured with ultrahigh-performance fiber-reinforced concrete (UHPFRC) incorporating river sand and coarse aggregate, were tested under cyclic loading.
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Seismic behavior of precast segmental UHPC bridge columns with replaceable external cover plates and internal dissipaters
TL;DR: In this article, a new earthquake resilient ultra-high-performance concrete (UHPC) bridge column was proposed and fabricated with precast segmental construction, where the bottom segment was divided into two parts: core zone and four replaceable surrounding UHPC plates, between which replaceable dissipaters were employed.
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Shear Strength of Dry Joints in Precast UHPC Segmental Bridges: Experimental and Theoretical Research
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Lateral Behavior of Precast Segmental UHPC Bridge Columns Based on the Equivalent Plastic-Hinge Model
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Large-scale quasi-static testing of precast bridge column with pocket connections using noncontact lap-spliced bars and UHPC grout
TL;DR: In this article, a pocket connection was proposed to connect a precast bridge column and a monolithic reinforced concrete companion, which adopted noncontact lap-spliced bars and ultra-high performance concrete (UHPC) grout.
References
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Ultra-High Performance Concrete: A State-of-the-Art Report for the Bridge Community
TL;DR: The Ultra-High Performance Concrete (UHPC) refers to a relatively new class of advanced cementitious composite materials whose mechanical and durability properties far surpass those of conventional concrete as mentioned in this paper.
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Ultrahigh-Performance Concrete Segmental Bridge Technology: Toward Sustainable Bridge Construction
TL;DR: In this article, the current state of practice in the development of ultra-high-performance concrete (UHPC) bridge construction in Malaysia is presented and the most current information and details on the completed and ongoing UHPC bridge projects in Malaysia are presented.
Development of Non-Proprietary Ultra-High Performance Concrete for Use in the Highway Bridge Sector : TechBrief
TL;DR: In this article, the authors developed a non-proprietary cost effective UHPC characterized by compressive strength exceeding 20ksi (138 MPa), preand post-cracking tensile strength above 0.72 ksi (5 MPa) and sufficient durability properties.