A UHPC overlay for deteriorated bridge decks
Author(s) : S. Sritharan, G. Doiron, D. Bierwagen, B. Keierleber, A. Abu-Hawash
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: 797 - 806
Total Pages : 10
Language : English
Abstract: Deterioration of existing bridge decks, which usually originates with deck cracking on the top surface, is a common problem in North America. It causes frequent repair of the decks to limit further damage resulting from water/chloride ingress. Due to the superior engineering and durability properties, use of an ultra-high performance concrete (UHPC or UHPFRC) deck overlay is an attractive alternative to minimize damage to bridges. Recently developed UHPC thixotropic mix designs enable UHPC overlay to be used on decks with slope and meet specific crowning requirements. The use of this UHPC with 3.25% of steel fibers was successfully evaluated under laboratory conditions. The feasibility of applying this technology in the field was then investigated on a small bridge for the first time in North America in May 2016. This paper presents the details about the laboratory evaluation, field implementation of UHPC overlay, and lessons learned from this first UHPC overlay project in North America.
Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00