Abstract
Based on simple but fundamental physical observations, a simple Kelvin model with degree of hydration based stiffnesses and viscosity is developed for the simulation of the visco-elastic behaviour of early age concrete, including instantaneous deformation and basic creep. The validity of the model is verified by means of creep tests under constant or varying stresses. A good agreement with the experimental creep results is noticed. With the newly developed degree of hydration based Kelvin model the fundamental nature of the degree of hydration for the early age creep behaviour is illustrated once again.
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