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Communication Dans Un Congrès Année : 2013

Fracture energy of concrete at very early ages by inverse analysis

Résumé

In this paper, the fracture characteristics of concrete at very early ages are investigated. Experimentally , three point bending tests are performed on notched beams at very early-ages (before 24 h) and the Load-CMOD curves are obtained. In order to find the trend of the evolution of the fracture energy, an inverse analysis procedure is developed. A damage model based on an energetic regular-ization is combined with a non linear inverse analysis algorithm. As the stress-strain curve (and the stress-crack opening one) given by the damage model is non linear, the Levenberg-Marquardt algorithm is chosen. Results obtained from numerical simulations show that fracture energy of concrete increases with age.
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Dates et versions

hal-02444557 , version 1 (18-01-2020)

Identifiants

  • HAL Id : hal-02444557 , version 1

Citer

M. Matallah, M. Farah, Frederic Grondin, J. Saliba, Ahmed Loukili. Fracture energy of concrete at very early ages by inverse analysis. FraMCoS-8 VIII International Conference on Fracture Mechanics of Concrete and Concrete Structures, Mar 2013, Toledo, Spain. ⟨hal-02444557⟩
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