Prediction of the shrinkage behavior of recycled aggregate concrete: A review

This paper provides a systematic literature review, based on the identification, appraisal, selection and synthesis of publications relating to the effect of incorporating recycled aggregates, sourced from construction and demolition waste, on the shrinkage of concrete. It identifies various influencing aspects related to the use of recycled aggregates such as replacement level, size and origin, as well as mixing procedure, curing conditions, and use of chemical admixtures and additions. A comparison between the shrinkage strain obtained experimentally and that calculated using existing models for predicting shrinkage is also presented. The results show that all prediction models analyzed in this paper tend to overestimate the shrinkage strain of concrete and would benefit from calibration in the form of short-term testing of an actual concrete to be used in a given project.