Numerical Simulation of 12 Years Long Biaxial Creep Tests: Efficiency of Assuming a Constant Poisson’s Ratio
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Bibliographic record
Abstract
For a part of the concrete containment buildings of French nuclear power plants, the leak-tightness depends vastly on the pre-stress of the building which can decrease due to concrete delayed strains. Therefore, EDF has developed a large experimental program in the early 2000 in order to study the biaxial creep of concrete. In this paper phenomenological drying, shrinkage and creep model is used to model these biaxial tests. The identification of the parameters of the drying model is first presented. Then, the parameters relative to a parasite mass-loss which occurred in the sealed tests and to the creep model are identified. The model is shown unable to reproduce correctly the biaxial strains observed in the tests. A change of the part of the model accounting for the desiccation creep is therefore proposed. Assuming that the desiccation creep Poisson’s ratio is identical to the basic creep and the elasticity ones allows for a better reproduction of long-term multiaxial concrete creep.
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Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
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