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Journal Articles Cement and Concrete Research Year : 2023

On the long-term delayed strain of concrete structures


Creep and shrinkage of concrete are essential for the safety assessment of large civil engineering structures. The present paper presents two different approaches to predicting the delayed strain considering a single material point to represent the structure. The first one is a decoupled approach, such as design codes, that splits the delayed strain into four components and predicts each of them as a function of several parameters such as concrete strength. In the second approach, delayed strain is modeled as the viscoelastic response of concrete to applied external loads and/or internal hygric stresses. The advantages and inconveniences of both methods are discussed. In the end, delayed strains of concrete are predicted using these approaches for two examples of real structures: a prestressed concrete bridge and a mock-up of a biaxially prestressed containment building.
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hal-03923957 , version 1 (05-01-2023)



Abudushalamu Aili, Jean-Michel Torrenti, Jean-Philippe Sellin, Jean-François Barthélémy, Matthieu Vandamme. On the long-term delayed strain of concrete structures. Cement and Concrete Research, 2023, 165, pp.107086. ⟨10.1016/j.cemconres.2022.107086⟩. ⟨hal-03923957⟩
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