Publications

Pro061

Microstructure and mechanism of cracks rehabilitation in reinforced concrete using electrodeposition technique



Title: Microstructure and mechanism of cracks rehabilitation in reinforced concrete using electrodeposition technique
Author(s): Z. Jiang, F. Xing, Z. Sun, P. Wang
Paper category : conference
Book title: International Conference on Microstructure Related Durability of Cementitious Composites
Editor(s): W. Sun, K. van Breugel, C. Miao, G. Ye and H. Chen
Print-ISBN: 978-2-35158-065-3
e-ISBN: 978-2-35158-084-4
Publisher: RILEM Publications
Publication year: 2008
Pages: 375 - 384
Total Pages: 10
Nb references: 16
Language: English


Abstract: This paper reports on the design of an experimental device for cracks rehabilitation in reinforced concrete, using an electrodeposition method, firstly. The composition and microstructure of the electrodeposits in cracks and the crack healing effectiveness were studied. The Effect of current density on the microstructure of crystals, deposited in the cracks was investigated and the electrodeposition mechanism of crack healing was discussed. The results indicate that the Composition of the electrodeposits differs depending on the used electrolytes. Current density plays an important role on healing effectiveness of concrete cracks. The Mg(OH)2 crystals produced in high current density regimes are large, lamellar and arrange loosely. The crack healing mechanism lies in that electrodeposits produced by cell reaction induce into nucleation and form insoluble crystals in cracks, and consequently the electrodeposits fill and heal concrete cracks gradually.


Online publication: 2009-06-09
Publication type : full_text
Public price (Euros): 0.00