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Communication Dans Un Congrès Année : 2016

Stable control for mixed-mode concrete fracture

Résumé

The knowledge of the concrete behavior is essential when analyzing the aging and leakage phenomena of production facilities. On the industrial level the concrete fracture characterization is currently performed through standard experimental tests that are not sufficiently rich to determine in an optimized manner all the corresponding characteristics. First there is a general lack of mixed mode loading experiments that produce non trivial crack paths. Moreover, even for some well defined material properties (as for example critical shear stress) the corresponding loading tests are not sufficiently developed, as the results are too dependent on aggregate distribution and specimen sizes. It means that we are still not able to locally reproduce some specific me-chanical stresses distribution and repeatedly check it in order to attain necessary accuracy. Therefore an improvement in corresponding measurement technique is still needed. When studying concrete fracture behavior the main difficulty is related to instable crack propagation. In the past some relevant works in mixed mode fracture were conducted by Nooru-Mohamed. More recently the work was extended employing an up-to-date full-field measurement technique. In this work, we develop a stable crack path control technique that allows “customized” cracking tests creation for the characterization of various materials. Using this technique well instrumented and discriminating mixed–mode crack propagation tests performed on VERCORS concrete samples are presented. Finally we discuss the relevance of these tests for various pa-rameters identification and some possible extension of stable crack path control technique.
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Dates et versions

hal-02485073 , version 1 (25-02-2020)

Identifiants

  • HAL Id : hal-02485073 , version 1

Citer

A. Carpiuc, C Jailin, M. Poncelet, K. Kazymyrenko, F. Hild. Stable control for mixed-mode concrete fracture. Technological Innovations in Nuclear Civil Engineering (TINCE), Sep 2016, Paris, France. ⟨hal-02485073⟩
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