Abstract: “Creep and shrinkage strains of concrete can have prejudicial consequences in structures. Often, the values of these uncontrolled strains appear to be clearly different from the expected ones. In fact, there is not yet a physical explanation perfectly satisfactory of creep and the codified descriptions of this phenomenon are always unreliable and don’t take the effect of admixtures into consideration. In the context of this study, and starting from an important experimental database coming from international laboratories and research centers, new models of creep calculation were developed and allow to take the effect of water-reducing admixture into consideration and to obtain results more satisfactory than those of the Eurocode 2.”

Keywords: creep, admixture, material, model, database