A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Damage characterization of asphalt in laboratory by ultrasonic wave propagation
A non-destructive measurement technique is used to follow the mechanical evolution of asphalt pavement throughout mechanical tests. The test is based on the propagation of ultrasonic waves (compressional and shear waves). With an inverse analysis, it is then possible to calculate and follow up the evolution of mechanical parameters of the materials such as viscoelastic modulus G, oedometric modulus. Indeed, this technique makes it possible to obtain mechanical characterization of bituminous concrete throughout complex modulus tests. The paper draws a parallel between results of complex modulus from strain measurements (extensometers or strain gages) and from this method. Moreover, ultrasonic wave propagation makes possible to follow the intern temperature of the material and to determine its homogeneity inside. Finally, this technique enables to plot at each instant the rheological curve of the material (G', G') and to follow up the time dependent evolution of damage throughout fatigue tests. This non-destructive test is applied on two different laboratory devices: the five-point bending test and cylindrical cores. The presented results provide excellent perspectives for using this complementary method on different bituminous concrete tests.
Damage characterization of asphalt in laboratory by ultrasonic wave propagation
A non-destructive measurement technique is used to follow the mechanical evolution of asphalt pavement throughout mechanical tests. The test is based on the propagation of ultrasonic waves (compressional and shear waves). With an inverse analysis, it is then possible to calculate and follow up the evolution of mechanical parameters of the materials such as viscoelastic modulus G, oedometric modulus. Indeed, this technique makes it possible to obtain mechanical characterization of bituminous concrete throughout complex modulus tests. The paper draws a parallel between results of complex modulus from strain measurements (extensometers or strain gages) and from this method. Moreover, ultrasonic wave propagation makes possible to follow the intern temperature of the material and to determine its homogeneity inside. Finally, this technique enables to plot at each instant the rheological curve of the material (G', G') and to follow up the time dependent evolution of damage throughout fatigue tests. This non-destructive test is applied on two different laboratory devices: the five-point bending test and cylindrical cores. The presented results provide excellent perspectives for using this complementary method on different bituminous concrete tests.
Damage characterization of asphalt in laboratory by ultrasonic wave propagation
Schadenscharakterisierung von Asphalt im Labor mittels Ultraschallwellenausbreitung
Houel, Adrien (author) / Arnaud, Laurent (author)
2009
6 Seiten, 5 Bilder, 1 Tabelle, 8 Quellen
(nicht paginiert)
Conference paper
Storage medium
English
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