Abstract
The main aim of this work was to determine creep and shrinkage variations experienced in recycled concrete, made by replacing the main fraction of the natural aggregate with a recycled aggregate coming from waste concrete and comparing it to a control concrete. It was possible to state that the evolution of deformation by shrinkage and creep was similar to a conventional concrete, although the results after a period of 180 days showed the influence of the substitution percentage in the recycled aggregates present in the mixture. In the case when 100% coarse natural aggregate was replaced by recycled aggregate there was an increase in the deformations by creep of 51% and by shrinkage of 70% as compared to those experienced by the control concrete. The substitution percentages of coarse natural aggregate by coarse recycled aggregate were 20, 50 and 100%. Fine natural aggregate was used in all cases and the amount of cement and water–cement ratio remained constant in the mixture.
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Domingo, A., Lázaro, C., Gayarre, F.L. et al. Long term deformations by creep and shrinkage in recycled aggregate concrete. Mater Struct 43, 1147–1160 (2010). https://doi.org/10.1617/s11527-009-9573-0
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DOI: https://doi.org/10.1617/s11527-009-9573-0