Creep and Shrinkage of Aging Concrete


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Title: Creep and Shrinkage of Aging Concrete

Author(s): KS. Pister, J.H. Argyris, and K.J. William

Publication: Special Publication

Volume: 55


Appears on pages(s): 1-30

Keywords: age; concretes; creep properties; deformation; mass con-crete; pressure vessels; shrinkage; strains; stresses; thermodynamics

Date: 8/1/1978

A thermodynamically-based creep theory is developed, in which the strain at any time is composed of mechanical, thermal, hygral and autogenous contributions. Each of these contributions (except the autogenou consists of an instantaneous part which is reversible (in the working stress regime) and a time-dependent part which may in turn contain both reversible and irreversible components. The theory provides a unifying framework for examining existing methods of modeling creep phenomena and developing new models where experimental data reveal deficiencies in current models.