Chlorides are one of the main aggressive agents in electrochemical corrosion. Concrete protects steel surfaces for some time, but after that, chlorides destroy the passive film and cause pitting in reinforcement, deteriorating the capacity of reinforced concrete (RC) structures. As regards sus-tainable concrete, supplementary cementitious materials (SCM) and recycled aggregates can be considered optimal options to reduce greenhouse gas emissions and natural resource extraction, respectively. However, the behaviour of RC containing waste should be carefully evaluated, also in terms of corrosion resistance. To this aim, in this work accelerated migration tests were per-formed on green concrete containing vitrified municipal solid waste incineration ash as SCM and recycled aggregates in partial replacement of natural ones.
Chloride migration for concrete containing recycled aggregate and supplementary cementitious material / Plaza, Pablo; Sirico, Alice; Palii, Olha; Belletti, Beatrice; Bernardi, Patrizia; Medina, César; Sánchez, Javier. - ELETTRONICO. - (2023), pp. 1-4. (Intervento presentato al convegno CACRCS Workshop on Capacity Assessment of Corroded Reinforced Concrete Structures tenutosi a Parma nel 13-15 September 2023).
Chloride migration for concrete containing recycled aggregate and supplementary cementitious material
Alice Sirico;Olha Palii;Beatrice Belletti;Patrizia Bernardi
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2023-01-01
Abstract
Chlorides are one of the main aggressive agents in electrochemical corrosion. Concrete protects steel surfaces for some time, but after that, chlorides destroy the passive film and cause pitting in reinforcement, deteriorating the capacity of reinforced concrete (RC) structures. As regards sus-tainable concrete, supplementary cementitious materials (SCM) and recycled aggregates can be considered optimal options to reduce greenhouse gas emissions and natural resource extraction, respectively. However, the behaviour of RC containing waste should be carefully evaluated, also in terms of corrosion resistance. To this aim, in this work accelerated migration tests were per-formed on green concrete containing vitrified municipal solid waste incineration ash as SCM and recycled aggregates in partial replacement of natural ones.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
