Creep

  • Dlubal Glossary

Glossary Term

The creep is a time-dependent increase of a plastic deformation under a permanent load.
In principle, it is necessary to consider the creep in constructional tasks, such as mechanical engineering or civil engineering as it affects the behavior of the respective objects to a considerable extent.

Especially in the case of concrete, creep is a property that has to be considered in the design of reinforced concrete components.

Concrete creep depends on the following properties:
    • Size and duration of the load (deformation increases with the duration)
    • Water-cement ratio, w/c ratio (deformation increases with the higher w/c ratio)
    • Type of aggregate (deformation decreases with the stiffness of an aggregate)
    • Degree of hardening at the loading start
Furthermore, the so-called "creep-producing stress" has a considerable effect on the creep deformations. Therefore, the creep effects reduce the stiffness of structural components and lead to greater deformations.

In timber structures, creep deformations must also be calculated proportionally for deflections.

Keywords

Creep Stress-strain diagram Creep strain

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