Evaluation of grouting condition in repaired concrete by impact-echo

Title: Evaluation of grouting condition in repaired concrete by impact-echo
Author(s): T. Watanabe, H. Fujigaki, C. Hashimoto, M. Ohtsu
Paper category : conference
Book title: RILEM Symposium on On Site Assessment of Concrete, Masonry and Timber Structures - SACoMaTiS 2008
Editor(s): L. Binda, M. di Prisco, R. Felicetti
Print-ISBN: 978-2-35158-061-5
e-ISBN: 978-2-35158-075-2
Publisher: RILEM Publications SARL
Publication year: 2008
Pages: 79 - 86
Total Pages: 8
Nb references: 7
Language: English

Abstract: The impact-echo method is a non-destructive evaluation technique for detecting defects in concrete structures analyzing elastic wave due to a mechanical impact. Cracks and voids are commonly repaired by injection of grout material. The impact-echo method may provide information about the repair effectiveness of injection of grout material. In order to evaluate the effect of grout material on frequency spectra, the impact-echo method is applied to repaired concrete specimens. The following results have been found: the spectral peak corresponding to defects disappeared after injection of grout material and the spectral amplitude of defects decreased and disappeared with increasing acoustic impedance of grout material. Void and repair effectiveness of grout is recognized by SIBIE.

Online publication: 2009-05-26
Publication type : full_text
Public price (Euros): 0.00