Reference : On the relation between bond quality and impact-echo frequency spectrum
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/29713
On the relation between bond quality and impact-echo frequency spectrum
English
Piotrowski, Tomasz mailto [> >]
Garbacz, Andrzej mailto [> >]
Van der Wielen, Audrey mailto [Université de Liège - ULg > Département Argenco : Secteur GeMMe > Matériaux de construction non métalliques du génie civil >]
Nguyen, Frédéric mailto [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Géophysique appliquée >]
Courard, Luc mailto [Université de Liège - ULg > Département Argenco : Secteur GeMMe > Matériaux de construction non métalliques du génie civil >]
2010
Proceedings of the 13th International Congress on Polymers in Concrete ICPIC 2010
University of Minho
373-380
Yes
International
972-99179-4-3
Guimaraes
Portugal
13th International Congress on Polymers in Concrete
10-12 February 2010
Ed. J. B. Aguiar, S. Jalali, A. Camoes and R. M. Ferreira
Funchal
Madeira - Portugal
[en] non destructive testing ; concrete ; repair
[en] According to EN 1504-10 and ACI Concrete Repair Manual, bond strength and interface quality are the main features of repair system necessary to be assessed. Pull-off test is most commonly used for bond strength evaluation but growing interest in nondestructive techniques (NDT) is recently noted. Impact-echo (IE) is treated as the most promising one for this purpose. The aim of this paper is to analyze an effect of bond quality on stress wave propagation in repair systems. A group of samples has been prepared in order to obtain repair systems of different bond quality. Prior to repair, quality of concrete substrates has been characterized according different techniques: compressive strength, superficial cohesion, surface roughness index and cracking quantification. Than a polymer-modified repair mortar has been applied. Af-ter hardening, IE signals have been recorded and pull-off bond strength determined. The rela-tionships between parameters characterizing surface quality, bond strength, IE frequency spec-trum and results of wavelet analysis of IE signal have been analyzed.
http://hdl.handle.net/2268/29713

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