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SUMMARY:New systems of precast bridge decks made with ultra-high performan
 ce fiber reinforced concretes
DTSTART:20180406T121500
DTEND:20180406T131500
DTSTAMP:20260430T150420Z
UID:0ccbc118ebb7e1645e8261e1c488afb9e30c0a6d7ef45b74997d7359
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Dr Jean-Philippe Charron\, Full Professor in Civil Engin
 eering\, Department of Civil\, Geological and Mining Engineering\, Polytec
 hnique Montreal\nAbstract : The presentation will focus on the development
  of various precast bridge slabs including ultra-high performances fiber r
 einforced concrete (UHPFRC)\, and a UHPFRC field-cast connection adapted f
 or these precast slabs. Phase 1 of the project provided three innovative b
 ridge slab designs: a reference slab made of high performances concrete (H
 PC)\, a hybrid slab incorporating high and ultra-high performances fiber r
 einforced concrete (HPFRC and UHPFRC)\, and a UHPFRC slab. Test conducted 
 in laboratory demonstrated that slabs made with UHPFRC fulfilled easily re
 quirements of crack openings and ultimate strength specified in the Canadi
 an Bridge Code. The UHPFRC field-cast connection developed in Phase 2 of t
 he project was combined with precast slabs developed in Phase 1 and tested
  in laboratory. The tests confirmed that HPC slabs linked with the UHPFRC 
 connection provided similar maximum crack openings\, stiffness and ultimat
 e strength as the equivalent cast-in-place HPC slab. Moreover\, utilizatio
 n of the UHPFRC connection between precast hybrid slabs provided smaller c
 rack width and superior ultimate strength than specifications of the Canad
 ian Bridge Code. Parametric numerical studies showed the improved mechanic
 al performance of precast deck including UHPFRC component detailed previou
 sly. The Isabey-Darnley pedestrian bridge build in 2016 with UHPFRC precas
 t bridge slabs and field-cast joints developed in this project will be des
 cribed.\n\nBio : Jean-Philippe Charron is Full Professor at the Department
  of Civil\, Geological and Mining Engineering of Polytechnique Montreal an
 d head of the Group for Research in Structural Engineering. He completed a
  PhD at Laval University (Canada) on early-age behavior of concrete and cr
 acking mitigation in 2002 and a post-doc at EPFL (Switzerland) on the reha
 bilitation of infrastructures with ultra-high performance fiber reinforced
  concretes (UHPFRC) in 2004. Since 2007\, he is leading industrial researc
 h projects on the development of new bridge components and bridge repairs 
 with high and ultra-high performance fiber reinforced concretes (HPFRC and
  UHPFRC) funded by the Natural Sciences and Engineering Research Council o
 f Canada\, major bridge owners and construction companies. He is member of
  ACI Committees 239 on UHPFRC and 544 on FRC\, he is also involved in the 
 development of the Canadian Bridge Design Code. His research interests inc
 lude development and characterization of fiber reinforced concretes (FRC)\
 , design and rehabilitation of bridges with FRC\, and durability of concre
 tes under loads.
LOCATION:GC B3 30 https://plan.epfl.ch/?room=GCB330
STATUS:CONFIRMED
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