Shear-torque tests were used for the first time to assess the fatigue behaviour of double-layered asphalt specimens. During the test, an acoustic emission (AE) technique was used to evaluate the damage process leading to failure. Results showed that the application of cyclic loading led to the decrease of the complex shear modulus, until the physical separation of the two layers. AE analysis showed that damage mostly occurred in the interlayer zone. The comparison between mechanical and AE results suggested that the damage evolution phase occurred when approaching the end of the test when the stiffness decrease was about 70%.

Use of acoustic techniques to analyse interlayer shear-torque fatigue test in asphalt mixtures / Ragni, D.; Takarli, M.; Petit, C.; Graziani, A.; Canestrari, F.. - In: INTERNATIONAL JOURNAL OF FATIGUE. - ISSN 0142-1123. - STAMPA. - 131:(2020), p. 105356. [10.1016/j.ijfatigue.2019.105356]

Use of acoustic techniques to analyse interlayer shear-torque fatigue test in asphalt mixtures

Ragni D.
Primo
Writing – Original Draft Preparation
;
Graziani A.
Penultimo
Writing – Review & Editing
;
Canestrari F.
Ultimo
Supervision
2020-01-01

Abstract

Shear-torque tests were used for the first time to assess the fatigue behaviour of double-layered asphalt specimens. During the test, an acoustic emission (AE) technique was used to evaluate the damage process leading to failure. Results showed that the application of cyclic loading led to the decrease of the complex shear modulus, until the physical separation of the two layers. AE analysis showed that damage mostly occurred in the interlayer zone. The comparison between mechanical and AE results suggested that the damage evolution phase occurred when approaching the end of the test when the stiffness decrease was about 70%.
2020
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11566/276102
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 19
  • ???jsp.display-item.citation.isi??? 17
social impact