AS3600 Creep and Shrinkage Models for Normal and High Strength Concrete

The Australian Standard for Concrete Structures, AS3600, is currently being reviewed, with amendments introduced to facilitate the use of 500 MPa reinforcing steel in the design of concrete structures. This paper is primarily concerned with the instantaneous and time dependent strength and deformation characteristics of concrete up to 100 MPa. The factors that have been considered in the current review are discussed and the models that have been developed for predicting the tensile strength, the elastic modulus, the creep coefficient and the shrinkage strain for the full range of applicable concrete strengths are presented.