Fatigue lives of asphalt beams in 2 and 4 point dynamic bending tests based on a 'new' fatigue life definition using the "Dissipated Energy Concept"
Describes the results of a comparison of fatigue lives for gravel asphalt concrete mix (GAB 4/32). The fatigue tests were carried out in 2 and 4 point dynamic bending tests using the controlled displacement mode. The fatigue lives were determined according to the common definition as the number of load repetitions at which the stiffness modulus had decreased to half its initial value and according to the new definition which is based on a change in the dissipated energy per cycle. The hypothesis is that this change indicates a change from the crack initiation process into a crack propagation process. It was hoped that using the new definition the fatigue lives in the 2 and 4 point tests were exchangeable which should enable a harmonization of fatigue testing devices.
- Datum rapport
- 1 januari 1997
- Auteur
- [Ministry of Transport, Public Works and Water Management], Rijkswaterstaat, Road and Hydraulic Engineering Division = Ministerie van Verkeer en Waterstaat, Rijkswaterstaat, Dienst Weg- en Waterbouwkunde (RWS, DWW); A.C. Pronk
- Uitgever
- Ministerie van Verkeer en Waterstaat, Rijkswaterstaat, Dienst Weg- en Waterbouwkunde (RWS, DWW).
- Annotatie
-
8, [64] p. annexes fig., tab. Report no. W-DWW-97-056. - Dossier no. IL95018VIE With ref.
- Documentnummer
- 156517