THE CONCRETE BRIDGE MAGAZINE

Spring 2019

ASPIRE is a quarterly magazine published by PCI in cooperation with the associations of the National Concrete Bridge Council. The editorial content focuses on the latest technology and key issues in the Concrete Bridge Industry.

Issue link: http://www.aspiremagazinebyengineers.com/i/1093138

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ASPIRE Spring 2019 | 45 F H WA Ultra-high-performance concrete (UHPC) is an advanced, fiber-reinforced, cementitious composite material that has gained significant attention from bridge owners and designers because of its excellent mechanical and dura- bility properties. e rapid growth in UHPC's popularity in the U.S. bridge market has been spurred in part by its ability to provide a much- needed, robust solution for closure pours in prefabricated bridge element (PBE) connec- tions. 1 is application has also been a com- mon entry point for owners interested in the opportunities UHPC provides for bridge de- sign and construction. To date, in the United States, nearly 200 bridges in 27 states and the District of Columbia have been constructed us- ing UHPC materials, and 93% of these projects used UHPC for PBE connections. Moving Beyond PBE Connections As UHPC-class materials become more prev- alent, new and innovative applications for these materials in bridge design and construction will continue to emerge. One emerging application for UHPC in the U.S. highway bridge sector is for bridge repair, retrofit, and rehabilitation. Since 2016, at least 10 U.S. bridges have been repaired or rehabilitated using UHPC-class materials, and, for the most part, each appli- cation has had unique aspects. (Refer to the FHWA Interactive UHPC Bridge Map for ad- ditional details. 2 ) Four of these projects (in Colorado, Califor- nia, Florida, and Rhode Island) marked the first use of UHPC on state-owned highway bridges. Each of these projects used relatively small vol- umes of UHPC material and were viewed as relatively low risk by the bridge owners. As such, repair applications are becoming an alternative entry point for bridge owners looking to gener- ate institutional knowledge and familiarize local Advancing Bridge Repair and Preservation Using Ultra-High-Performance Concrete by Dr. Zachary B. Haber and Dr. Benjamin A. Graybeal, Federal Highway Administration PCI Bridge Design Manual 3rd Edition, Second Release, August 2014 This up-to-date reference complies with the fifth edition of the AASHTO LRFD Bridge Design Specifications through the 2011 interim revisions and is a must-have for everyone who contributes to the transportation industry. This edition includes a new chapter on sustainability and a completely rewritten chapter on bearings that explains the new method B simplified approach. Eleven LRFD up-to-date examples illustrate the various new alternative code provisions, including prestress losses, shear design, and transformed sections. www.pci.org/MNL-133-11 R e p o r t S t a t e - o f - t h e - A r t R e p o r t o n Fu l l - D e p t h Pr e c a s t Co n c r e t e B r i d g e D e c k Pa n e l s P r e p a r e d b y t h e P C I C o m m i t t e e o n B r i d g e s a n d t h e P C I B r i d g e P r o d u c e r s C o m m i t t e e U n d e r t h e d i r e c t i o n o f t h e S u b - c o m m i t t e e f o r t h e S t a t e - O f -T h e - A r t R e p o r t o n F u l l - D e p t h P r e c a s t C o n c r e t e B r i d g e D e c k P a n e l s C o - s p o n s o r e d b y : U.S. Department of Transportation Federal Highway Administration F i r s t E d i t i o n The PCI State-of-the-Art Report on Full-Depth Precast Concrete Bridge Deck Panels Th e PCI State-of-the-Art Report on Full-Depth Precast Concrete Bridge Deck Panels (SOA- 01-1911) is a report and guide for selecting, designing, detailing, and constructing precast concrete full-depth deck panels for bridge construction. This report is relevant for new bridge construction or bridge-deck replacement. www.pci.org/SOA-01-1911 A simple log-in to the PCI website is all that is needed to download these free resources. eBooks are fully searchable with hot links to references, enabling direct access to the internet. Add these free PCI Transportation resources to your eBook library. Download at pci.org. Ultra-high-performance concrete repair of connections between precast, prestressed concrete voided-slab beams in Florida. Photo: Florida Department of Transportation.

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