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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Accuracy of Prediction Models for Shrinkage of Concrete
Author(s): David B. McDonald and H. Roper
Publication: Materials Journal
Appears on pages(s): 265-271
Keywords: concretes; models; shrinkage; standards; Materials Research
Abstract:Seven shrinkage models are compared with data measured on 46 Australian concretes containing over 1500 data points, using the method of residual plotting. This method is shown to be superior to the current methods of presenting shrinkage data, as the method of plotting shrinkage residuals enables inaccuracies in the shape of shrinkage-time curves to be readily identified. It is shown that more complex shrinkage models may not necessarily be more accurate than simple models. The introduction of such parameters as water-cement ratio, aggregate grading, and air content may not necessarily lead to improved accuracy of the models, and some of the recently presented models performed poorly for the Australian concretes used in this paper. It was shown that the simple Australian Code AS 1481 performed better than the other models for the prediction of shrinkage.
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