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Appl. Sci. 2019, 9(4), 617;

Durability Parameters of Reinforced Recycled Aggregate Concrete: Case Study

Universidad Autónoma de Sinaloa, Facultad de Ingeniería Mochis, Fuente de Poseidón y Ángel Flores s/n, Ciudad Universitaria, C.P. 81223 Los Mochis, México
Universidad Politécnica de Cataluña, Escuela Politécnica Superior de Edificación de Barcelona, Gregorio Marañón 44-50, C.P. 08020 Barcelona, España
Universidad Autónoma de Sinaloa, Escuela de Ingeniería Mazatlán, C.P. 82017 Mazatlán, México
Author to whom correspondence should be addressed.
Received: 12 December 2018 / Revised: 22 January 2019 / Accepted: 4 February 2019 / Published: 13 February 2019
(This article belongs to the Special Issue Emerging Construction Materials and Sustainable Infrastructure)
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Recycled concrete aggregate (RA) from pavement demolition was used to make concrete. Ten concrete mixtures with different replacement percentages of RA (coarse and fine) were made. The corrosion rate of steel and the electrical resistivity of concrete were determined on reinforced concrete specimens subjected to wetting-drying cycles (3.5% solution of NaCl). Corrosion rate was determined using the electrochemical technique of linear polarization resistance, while the electrical resistivity was measured by electrochemical impedance spectroscopy. The results show that the use of RA introduces more interfaces in concrete, which accelerates the steel corrosion process because the porosity increases and the electrical resistivity decreases. However, steel corrosion and the electrical resistivity in concrete are not significantly influenced by replacing a maximum 30% of coarse aggregate or 20% of fine aggregate with RA. View Full-Text
Keywords: recycled concrete aggregates; electrochemical techniques; electrical resistivity; corrosion; porosity recycled concrete aggregates; electrochemical techniques; electrical resistivity; corrosion; porosity

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Arredondo-Rea, S.P.; Corral-Higuera, R.; Gómez-Soberón, J.M.; Gámez-García, D.C.; Bernal-Camacho, J.M.; Rosas-Casarez, C.A.; Ungsson-Nieblas, M.J. Durability Parameters of Reinforced Recycled Aggregate Concrete: Case Study. Appl. Sci. 2019, 9, 617.

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