Analysis of early-age cracking for UHPFRC elements (cast-in-place or prefabricated) based on experience of Glenmore / "Passerelle des Anges" footbridges

Authors: L. Sorelli, F. Toutlemonde, F.-J. Ulm, V. Perry, D. Corvez and A. Sheikh
Paper category: conference
Book title: Crack Control of Mass Concrete and Related Issues concerning Early-Age of Concrete Structures
Editor(s): F. Toutlemonde and J.-M. Torrenti
Print ISBN: 978-2-35158-125-4
e-ISBN: 978-2-35158-126-1
Publisher: RILEM Publications SARL
Publication year: 2012
Pages: 211 - 222
Total Pages: 12
Language: English

Abstract: This work presents a model-based analysis of the risk of early age cracking in structures made of Ultra High Performance Concrete (UHPC). First, we summarize the background works on modelling UHPC at early age with emphasis on the thermodynamics hypothesis of partial decoupling which substantially simplifies the application and calibration of the model. Then, after calibrating the chemo-thermo mechanical properties, we present two case studies: the UHPC footbridge in Calgary, Canada, and the “Passerelle des Anges” close to Montpellier, France. The comparison between the simulated and measured histories of temperature and strains is presented. The concept of level of loading was employed to assess the risk of early age cracking. Finally, a probabilistic analysis of a simplified 1D case is employed to support the final conclusions.

Online publication: 2012-07-20
Publication Type: full_text
Public price (Euros): 0.00