Corrosion damage of concrete structures in ammonium nitrate-based environments

Author(s): I. Pepenar
Paper category: Conference
Book title: Concrete Repair, Rehabilitation and Retrofitting III (ICCRRR)
Editor(s): M.G. Alexander, H.-D. Beushausen, F. Dehn, P. Moyo
Print ISBN: 978-0-415-89952-9
Publisher: Taylor & Francis Group
Pages: 217 - 218
Total Pages: 2
Language: English

The paper presents the results of the research on the long-term corrosion behaviour of the reinforced concrete structures, after 30 to 50 years of service in ammonium nitrate-based industrial environments, in respect of the damage generated by the corrosive action of aggressive agents. Investigation of the damage state of reinforced concrete structures, on site and in the laboratory, showed that many of examined elements presented severe damage due to corrosion. This damage was in various stages of development and had a different influence on the resistance, stability and durability of the elements. The conclusions underlie the complexity of the corrosion process on reinforced concrete structures exposed to ammonium nitrate-based environments, also affecting concrete and steel reinforcement. The considerations on the mechanisms of the corrosion processes of concrete and steel reinforcement under the action of ammonium nitrate environments are also described. The possibility of apparition and development of stress corrosion cracking phenomenon of steel reinforcements associated with non-controlled reduction of physico-mechanical characteristics of concrete by corrosion, led in the end to significant diminution or loss of bearing capacity and sudden break (collapse) of reinforced concrete elements/structures.

Online publication: 2014
Publication Type: abstract_only
Public price (Euros): 0.00