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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: Concrete Creep and Shrinkage Prediction from Short-Term Tests
Author(s): Rasko P. Ojdrovic and Mehdi S. Zarghamee
Publication: Materials Journal
Appears on pages(s): 169-177
Keywords: concretes; creep properties; deformation; quality control; shrinkage; statistical analysis; tests; Materials Research
Abstract:This paper presents a method for predicting the ultimate creep and shrinkage from the results of short-term standard creep and shrinkage tests on 15-cm-(6-in.)-diameter cylinders. Short-term tests are defined as those performed during a time period not exceeding 28 days after exposure. The paper uses both Bazant-Panula (BP-KX) and ACI 209 (ACI) models to predict the ultimate concrete creep and shrinkage from the short-term test results. Such predictions are compared with the results of long-term creep and shrinkage tests. Results show that the accuracy of prediction of the ultimate creep and shrinkage increases significantly when short-term test results are used to adjust the models. Relative to both test-adjusted BP-KX and ACI model predictions, the coefficient of variation of long-term measured shrinkage strains is less than 20 percent, and the coefficient of variation of long-term measured instantaneous plus creep strains is typically less than 7 percent.
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