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Time dependent behavior of elements combining ultra-high performance fiber reinforced concretes (UHPFRC) and reinforced concrete

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Abstract

Structural elements combining Ultra-High Performance Fiber Reinforced Concretes (UHPFRC) and concrete offer a high potential in view of rehabilitation and modification of existing structures. The investigation of the time-dependent behavior of composite “UHPFRC-concrete” elements is a fundamental step in the determination of durability and serviceability. For this, an experimental program was conducted on large composite “UHPFRC-concrete” beams and a numerical model was validated with the test results. The experimental results and a parametric study performed with the numerical model showed that UHPFRC and normal strength reinforced concrete are compatible in the long-term and that the critical period of composite “UHPFRC-concrete” elements are the first 90 days after the casting of the UHPFRC layer. Thus, the high potential of such composite elements can be exploited also in the long term.

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Authors and Affiliations

  1. University of Toronto, Toronto, Canada

    Katrin Habel

  2. MCS – ENAC, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland

    Emmanuel Denarié & Eugen Brühwiler

Authors
  1. Katrin Habel
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  2. Emmanuel Denarié
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  3. Eugen Brühwiler
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Habel, K., Denarié, E. & Brühwiler, E. Time dependent behavior of elements combining ultra-high performance fiber reinforced concretes (UHPFRC) and reinforced concrete. Mater Struct 39, 557–569 (2006). https://doi.org/10.1007/s11527-005-9045-0

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  • DOI: https://doi.org/10.1007/s11527-005-9045-0

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