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Elasticity, Creep, and Shrinkage in Concrete

Concrete Creep Under Constant Load

Description

Concrete creep is the time-dependent increase in strain under a sustained load. It is different from shrinkage, swelling, and thermal expansion, which are other time-based changes in concrete. When concrete stays under constant stress, its shape can slowly change over time.

The main cause of cree...

Transcript

When a loaded concrete member is subjected to constant stress that is sustained over time, the strain in the member increases, resulting in its deformation, which is known as creep.

This is primarily because, under continuous stress, the hydrated cement paste loses the physically adsorbed water from the calcium silicate hydrate in it.

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Tags

Creep ConcreteStress RelaxationStrain RecoveryCement PasteInterfacial Transition ZoneMicrocrack DevelopmentNon linear Stress StrainHysteresis Cyclic LoadingPrestressed ConcreteElastic Recovery