Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Carbonation-Induced Corrosion of Reinforced Concrete Elements according to Their Positions in the Buildings
Most regulations on the manufacturing of concrete for reinforced concrete structures rest on durability models that consider the corrosion of reinforcements. Those models are based on factors such as humidity, frost, presence of chlorides, and internal characteristics of the concrete itself, like resistance, porosity, type of cement, water/cement ratio, etc. No regulations, however, adopt a purely constructive perspective when evaluating the risk of corrosion, i.e., the relative position of the reinforced concrete in buildings. The present work focuses on the relationship between the position of the damaged element and the building envelope. A total of 84 elements (columns and reinforced concrete beams) across twenty buildings were analysed in the provinces of Alicante and Murcia (Spain). The reinforcement concrete of these elements underwent carbonation-induced corrosion according to their positions in the buildings: (A) façade columns in contact with the ground; (B) interior columns in contact with the ground; (C) columns of walls in contact with the ground; (D) columns and external beams protected from rain; (E) columns and external beams exposed to rain; (F) columns and beams in air chambers under sanitary slabs; and (G), columns and interior beams. Of all types, elements (E) and (F) suffered carbonation-induced corrosion faster than the models used in the regulations, and type (G) underwent slower carbonation. ; This research was funded by the European Union-Next Generation EU grant number reference RECUALI 21-08 (Requalification of the Spanish University System 2021–2023).
Carbonation-Induced Corrosion of Reinforced Concrete Elements according to Their Positions in the Buildings
Most regulations on the manufacturing of concrete for reinforced concrete structures rest on durability models that consider the corrosion of reinforcements. Those models are based on factors such as humidity, frost, presence of chlorides, and internal characteristics of the concrete itself, like resistance, porosity, type of cement, water/cement ratio, etc. No regulations, however, adopt a purely constructive perspective when evaluating the risk of corrosion, i.e., the relative position of the reinforced concrete in buildings. The present work focuses on the relationship between the position of the damaged element and the building envelope. A total of 84 elements (columns and reinforced concrete beams) across twenty buildings were analysed in the provinces of Alicante and Murcia (Spain). The reinforcement concrete of these elements underwent carbonation-induced corrosion according to their positions in the buildings: (A) façade columns in contact with the ground; (B) interior columns in contact with the ground; (C) columns of walls in contact with the ground; (D) columns and external beams protected from rain; (E) columns and external beams exposed to rain; (F) columns and beams in air chambers under sanitary slabs; and (G), columns and interior beams. Of all types, elements (E) and (F) suffered carbonation-induced corrosion faster than the models used in the regulations, and type (G) underwent slower carbonation. ; This research was funded by the European Union-Next Generation EU grant number reference RECUALI 21-08 (Requalification of the Spanish University System 2021–2023).
Carbonation-Induced Corrosion of Reinforced Concrete Elements according to Their Positions in the Buildings
Saura Gómez, Pascual (Autor:in) / Sánchez, Javier (Autor:in) / Torres Martín, Julio Emilio (Autor:in) / Chinchón Payá, Servando (Autor:in) / Rebolledo, Nuria (Autor:in) / Galao Malo, Oscar (Autor:in) / Universidad de Alicante. Departamento de Construcciones Arquitectónicas / Universidad de Alicante. Departamento de Ingeniería Civil / Grupo de Investigación en Restauración Arquitectónica de la Universidad de Alicante. GIRAUA-CICOP / Tecnología y Sostenibilidad en Arquitectura
21.06.2023
doi:10.3390/cmd4030018
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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Corrosion products of carbonation induced corrosion in existing reinforced concrete facades
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