Porous network concrete: Novel concept of healable concrete structures

Author(s): S. Sangadji, E. Schlangen
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: 84 – 85
Total Pages: 2
Language: English

Abstract: 
Self healing concrete has advantages to self repair concrete structures in difficult conditions and to prolong its life time. Researchers used many methods, such as embedded capsules and hollow fibres containing healing materials in the concrete, which indicated some problems of healing agents release. Porous network concrete which is proposed in this paper offer alternative solutions to distribute such healing agent into a crack or cracks in the concrete structures. A porous concrete layer can be placed at the surface or internally in the concrete structure to create a pore network. After concrete, hardens, shrinks, swells, deforms, and or cracks, a healing agent e.g. chemical-based, bacteria contained liquid, cement slurry, or mortar can be injected into the porous layer to produce a dense layer and to seal cracks. In this paper a simple system is designed to implement autonomous engineered repair or a self healing mechanism. It was found from the experiments that cracks were filled completely. Comparison of the mechanical properties of concrete beam samples before and after healing/repair shows the effectiveness of the proposed method.

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