UHPC link slab solutions in North America

Author(s) : G. Doiron, P. White
Paper category : Proceedings
Book title : UHPFRC 2017 Designing and Building with UHPFRC: New large-scale implementations, recent technical advances, experience and standards
Editor(s) : F. Toutlemonde & J. ResplendinoT.Ch.
Print-ISBN : 978-2-35158-166-7
e-ISBN : 978-2-35158-167-4
Publisher : RILEM Publications SARL
Publication year : 2017
Pages: 975 - 982
Total Pages : 8
Language : English

Abstract: A major concern for bridge owners is bridge deck joints which leak, allowing water and chlorides to spill onto the superstructure and substructure elements, thereby causing corrosion and other surface damage. If the bridge deck has no joints, this problem is eliminated.
A link slab is a cast-in-place continuity slab above the pier cap that connects simply supported adjacent spans. Conventional link slabs tend to produce cracks that are wide enough to allow moisture and chloride penetration, affecting the durability. The strain-hardening characteristic of UHPC with steel fibers is a key component in the development of UHPC link slabs with crack widths so small that moisture and chlorides cannot penetrate the surface, making them very durable. The New York State Department of Transportation (NYSDOT) has designed and used UHPC link slab details on various projects since 2013. This paper discusses the development, design and use of UHPC link slabs, as well as project examples and lessons learned.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00

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