Textile reinforced sprayed mortar for the repair of hydraulic engineering structures

Author(s): J. Orlowsky, M. Raupach
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: 383- 384
Total Pages: 2
Language: English

Massive, several decades old hydraulic engineering structures often show lower strength concretes as well as cracked construction joints and cracks with temperature induced changes of the crack width. When using unreinforced repair mortars, changes in the crack width cause a propagation of the cracks into the repair mortar. Water can penetrate these cracks entailing negative effects on the durability of the sprayed mortar and its bond to the existing concrete. The following paper deals with the application of textile reinforcement in customary sprayed mortars. By means of textiles, moving cracks in the substrate are transformed into a finely distributed crack pattern in the repair mortar which is uncritical with regard to durability. Within the framework of a research project funded by the Federal Waterways Engineering and Research Institute (BAW), different textile variations were combined with a sprayed mortar and the properties of the manufactured bond specimens were characterised in the laboratory. Afterwards, the new composite material was used in the context of a test repair on the Neckar weir at Horkheim.

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