Abstract
The recycling of Construction and Demolition Waste (CDW) to be used as aggregates for concrete is a potential alternative to minimize the environmental impact. In cold regions, the damage caused to concrete structures by freezing and thawing is a serious problem. This study presents the results of experimental tests aimed at investigating the influence of the use of Recycled Concrete Aggregate (RCA) on concrete submitted to 150 freeze-thaw cycles. Aggregates made from laboratory-produced concrete waste were used in two size fractions (i.e., Coarse 0–4.8 to 9.5 mm and Coarse 1–9.5 to 19 mm). Concrete mixtures of normal strength and high strength were produced with only natural aggregate and mixtures with 100% RCA in each of the size fractions. The mechanical behavior and physical properties were evaluated. The results showed that, for both natural and recycled concretes, the most affected class was the normal strength class.
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Acknowledgements
The study is part of SUPERCONCRETE Project (H2020-MSCA-RISE-2014, n. 645704): the Authors wish to acknowledge the financial contribution of the EU-funded Horizon 2020 Programme. More specifically, it was partly developed during the mobilities of both Prof. Romildo D. Toledo Filho at the University of Salerno (Italy), and Dr. Marco Pepe at the Federal University of Rio de Janeiro (Brazil).
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Rangel, C.S., Amario, M., Pepe, M., Martinelli, E., Toledo Filho, R.D. (2020). The Effect of Freeze-Thaw Cycles on the Mechanical Performance of RAC. In: di Prisco, M., Menegotto, M. (eds) Proceedings of Italian Concrete Days 2018. ICD 2018. Lecture Notes in Civil Engineering, vol 42. Springer, Cham. https://doi.org/10.1007/978-3-030-23748-6_23
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DOI: https://doi.org/10.1007/978-3-030-23748-6_23
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