Repair and restoration of “Dalle de Verre” concrete windows

Author(s): M. Ünal, H.-C. Kühne
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: 221 - 222
Total Pages: 2
Language: English

Abstract: 
On historically important concrete glazing damages occur frequently in form of cracks, chipping and corroded reinforcement. The present article focuses on the analysis of current damages and causes for damage and the development of repair concepts. The observation of compressive strength, carbonation depth, reinforcement layer and diameter as well as moisture and salt content profiles were determined on several reference objects. The carbonation-induced corrosion of
the reinforcement was determined as the main cause of the present damage. The frequent occurrence of carbonation-induced corrosion is well-founded by the low concrete cover of the reinforcement. It is caused by the specific manufacturing process in the production of concrete-glass windows. Standards dealing especially with the repair of concrete glazing do not exist. Therefore appropriate repair and maintenance techniques in accordance with DIN EN 1504 and German guidelines for repair and protection of concrete (RL SIB 2001) were developed. The requirements for a repair mortar for these specific applications are described. Furthermore, the basics of cathodic corrosion protection with zinc are presented.

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