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COST TU1404 benchmark on macroscopic modelling of concrete and concrete structures at early age: proof-of-concept stage

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Resumo:Modelling of early-age behaviour of cement-based materials is still a challenging task. The challenge is implied by the extent of the knowledge on the subject which results in a variety of different models used for simulation of cement-based materials. That is why a numerical benchmark program has been launched within the COST Action TU1404 aiming at improvement and harmonisation of computational prediction of early-age behaviour of cement-based materials as well as its behaviour on structural level. This paper presents the result of the proof-of-concept stage of the benchmark. The goal of this stage of benchmark was to compare the performance of currently used models for simulation of early-age behaviour of concrete. The participants were requested to simulate thermo-chemomechanical behaviour of simple concrete elements covering adiabatic and real evolution of temperature, shrinkage, stiffness and stresses accounting for early-age creep. The tasks were formulated based on the experimental measurements. This stage of benchmark allowed to evaluate the influence of different phenomena occurring in early-age concrete on the behaviour of early-age concrete structures, define the discrepancies between experimental results and numerical simulations, as well as to indicate the weak points in the models.
Autores principais:Jędrzejewska, Agnieszka
Outros Autores:Benboudjema, Farid; Lacarrière, Laurie; Azenha, Miguel; Schlicke, Dirk; Dal Pont, Stefano; Delaplace, Arnaud; Granja, José Luís Duarte; Hájková, Karolina; Heinrich, Peter Joachim; Sciumè, Giuseppe; Strieder, Emanuel; Stierschneider, Elisabeth; Šmilauer, Vít; Troyan, Vyacheslav
Assunto:Early-age concrete Numerical modelling Macroscopic modelling Benchmark program
Ano:2018
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso restrito
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho

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