[en] To detect delaminations in concrete bridge decks, the non-destructive techniques (NDT) permit a frequent inspection of the slabs without damaging the structures.
Within this study, twelve samples were realized, presenting diverse horizontal defects simulating delaminations. They were scanned with high frequency GPR with the common offset (CO) and common mid point (CMP) methods.
The electromagnetic waves speed and defects depth were determined from the CMPs. A 3D visualization program was also created to display the CO measurements.
The visibility of the inserted defects revealed to be dependent on their lateral extension, their thickness and especially their constitutive material.
Disciplines :
Civil engineering
Author, co-author :
Van der Wielen, Audrey ; Université de Liège - ULiège > Département Argenco : Secteur GeMMe > Matériaux de construction non métalliques du génie civil
Language :
English
Title :
Non-Destructive Methods for the Detection of Delaminations in Concrete Bridge Decks
Defense date :
June 2009
Number of pages :
82+27
Institution :
ULiège - Université de Liège
Degree :
Degree of Master in Civil Engineering
Promotor :
Courard, Luc ; Université de Liège - ULiège > Urban and Environmental Engineering
Nguyen, Frédéric ; Université de Liège - ULiège > Urban and Environmental Engineering
President :
Bolle, Albert ; Université de Liège - ULiège > Département ArGEnCo
Jury member :
Darimont, Anne ; Université de Liège - ULiège > Département ArGEnCo > Matériaux de construction non métalliques du génie civil
Gilles, Pierre
Plumier, André ; Université de Liège - ULiège > Département ArGEnCo
