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Sulfate Attack and Reinforcement Corrosion in Concrete with Recycled Concrete Aggregates and Supplementary Cementing Materials

2011; Elsevier BV; Volume: 6; Issue: 3 Linguagem: Inglês

10.1016/s1452-3981(23)15020-6

1452-3981

Ramón Corral Higuera, S.P. Arredondo-Rea, M.A. Neri-Flores, José Manuel Gómez-Soberón, Facundo Almeraya-Calderón, J.H. Castorena-González, Jorge Luis Almaral Sánchez,

Concrete and Cement Materials Research

As strategies to contribute to the concrete industry sustainability, reinforced concrete was fabricated using recycled concrete coarse aggregate and replacing partially portland cement with supplementary cementing materials as fly ash and silica fume. On test specimens, partially immersed in 3.5% Na2SO4 aqueous solution, the effect of the recycled and supplementary materials against sulfate attack and reinforcement corrosion was evaluated. For such aim, weight loss of concrete and corrosion potentials, corrosion current density of reinforcement were determined by means of electrochemical techniques as open circuit potential and linear polarization resistance, respectively.