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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Innovative precast HPFRC barriers for bridges
Author(s): Jean-Philippe Charron; Matthew Namy; François Duchesneau; Bruno Massicotte
Publication: Special Publication
Appears on pages(s): 259-268
Keywords: Precast barrier, fibre-reinforced concrete, static loading, impact loading, barrier length and continuity.
Abstract:A four-year industrial research project led by Polytechnique Montreal was conducted to develop innovative precast bridge barriers made with high-performance fibre-reinforced
concretes (HPFRC). The design of a 2-m long precast barrier in HPFRC anchored with Ushape rebar on a bridge slab was optimized using nonlinear finite element calculations.
Specimens were produced at full scale in a precast plant and tested in laboratory under various experimental conditions. Phase 1 of the project included application of static and
impact loadings on the barrier. Phase 2 concerned the mechanical behaviour of overhang bridge slabs with precast barriers (with or without longitudinal continuity) and cast-in-place barriers. Experimental results demonstrated that the bridge slab and barrier exceed the CSA static design load requirements with all configurations tested, and utilization of precast barriers with longitudinal continuity improve the ultimate load. Numerical models accurately reproduced the various experimental conditions studied; they were then used to provide information on the impact of barrier length.
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