Print Email Facebook Twitter Protection of aged concrete structures: Application of bio-based impregnation system Title Protection of aged concrete structures: Application of bio-based impregnation system Author Wiktor, V.A.C. Jonkers, H.M. Faculty Civil Engineering and Geosciences Department Structural Engineering Date 2014-05-26 Abstract This paper focuses particularly on the ageing of concrete due to micro-crack formation or freeze/thaw which results in an increased permeability of the concrete. The bacteria-based repair system presented in this paper aims at recovering the concrete permeability thanks to bacteria-induced calcium carbonate precipitation inside cracks/porosity. The performance of the bacteria-based repair system in laboratory and field application were very promising. The laboratory results showed that the crack sealing capacity of the repair system is very good as the cracks were completely sealed after impregnation. Results from field application are also very good as treated concrete had a significant higher resistance to freeze/thaw and only cracks that were not impregnated with the bacteria-based repair system were still heavily leaking. Subject concretecrack-repairbio-based systembiodeposition To reference this document use: http://resolver.tudelft.nl/uuid:c00c74f6-d138-4e7d-a284-9932df03c025 Publisher DCMat Ageing Centre, Delft University of Technology ISBN 978-94-6186-314-0 Source AMS 14: Proceedings of the 1st Ageing of Materials & Structures Conference, Delft, The Netherlands, 26-28 May 2014 Part of collection Institutional Repository Document type conference paper Rights (c) 2014 The Author(s) Files PDF 309414.pdf 489.48 KB Close viewer /islandora/object/uuid:c00c74f6-d138-4e7d-a284-9932df03c025/datastream/OBJ/view