A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Rehabilitation of Concrete Industrial Building Facades Attacked by Acids
Abstract This case study was based on the project for rehabilitation of facade sealing, built in precast concrete in an industrial plant of steel structures galvanizing. Analysis of the Brazilian Standard NBR 6118 (design of reinforced concrete) was taken as well as review of literature on durability, in order to identify causes of pathologies and prescribe the best therapy with the most appropriate materials and techniques. The durability of reinforced and prestressed concrete structures is thus highly dependent on the resistance of concrete to chloride penetration. The physical resistance of concrete to chloride penetration is influenced by factors relating to the concrete itself, such as the porosity of concrete and interconnectivity of the pore system; and to factors relating to the concrete structure such as the stress conditions and the integrity of the cover. This galvanizing plant has been under severe attack of hydrochloric acid fumes for more than 15 years, so that, the main aggressive agents are chlorides. The combination of epoxy and polyurethane coatings will provide adequate protection for concrete structures.
Rehabilitation of Concrete Industrial Building Facades Attacked by Acids
Abstract This case study was based on the project for rehabilitation of facade sealing, built in precast concrete in an industrial plant of steel structures galvanizing. Analysis of the Brazilian Standard NBR 6118 (design of reinforced concrete) was taken as well as review of literature on durability, in order to identify causes of pathologies and prescribe the best therapy with the most appropriate materials and techniques. The durability of reinforced and prestressed concrete structures is thus highly dependent on the resistance of concrete to chloride penetration. The physical resistance of concrete to chloride penetration is influenced by factors relating to the concrete itself, such as the porosity of concrete and interconnectivity of the pore system; and to factors relating to the concrete structure such as the stress conditions and the integrity of the cover. This galvanizing plant has been under severe attack of hydrochloric acid fumes for more than 15 years, so that, the main aggressive agents are chlorides. The combination of epoxy and polyurethane coatings will provide adequate protection for concrete structures.
Rehabilitation of Concrete Industrial Building Facades Attacked by Acids
Rogério Rosa, Agnus (author) / Carvalho Júnior, Antônio Neves (author) / Chahud, Eduardo (author) / Nunes Branco, Luiz Antônio Melgaço (author)
1st ed. 2016
2016-01-01
16 pages
Article/Chapter (Book)
Electronic Resource
English
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