Abstract
A four-point bending fatigue test system researched by Cooper was used to evaluate the fatigue performance for different particle size and different asphalt content of asphalt mixtures. Based on the four -point bending fatigue test and dissipated energy method, the Ratio of Dissipated Energy Change (RDEC) was calculated that is indicative of the damage evolution in asphalt mixtures. And then based on the correlation of Ratio of Dissipated Energy Change (RDEC) and load cycles, a new fatigue failure criteria was presented that is materials failure happen when RDEC increase sharply. Under these failure criteria, fatigue life prediction model on RDEC is accepted and this model is independent on constant strain and constant stress modes.
Highlights
Fatigue damage is the mainly form for the damage of asphalt concrete pavement and the mechanism investigation about fatigue damage of asphalt concrete pavement have attracted extensively attentions recently years
Based on the four-point bending fatigue test and dissipated energy method, the Ratio of Dissipated Energy Change (RDEC) was calculated that is indicative of the damage evolution in asphalt mixtures
Based on the correlation of Ratio of Dissipated Energy Change (RDEC) and load cycles, a new fatigue failure criteria was presented that is materials failure happen when Rate of Dissipated Energy Change (RDEC) increase sharply
Summary
Fatigue damage is the mainly form for the damage of asphalt concrete pavement and the mechanism investigation about fatigue damage of asphalt concrete pavement have attracted extensively attentions recently years. Many asphalt mixture fatigue life prediction models, including phenomenological method, mechanical approximation method and dissipated energy method were reported. Phenomenological method uses fatigue curves to characterize the fatigue properties of the material It holds that the fatigue of asphalt mixtures is the damage phenomena induced by the intensity attenuation accumulation under the repetition load (Moghadas et al, 2010; Park et al, 2009; Kim et al, 1997). Based on the correlation of Ratio of Dissipated Energy Change (RDEC) and load cycles, a new fatigue failure criteria was presented that is materials failure happen when RDEC increase sharply Under this failure criterion, fatigue life prediction model on RDEC is accepted and this model is independent on constant strain and constant stress modes
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Research Journal of Applied Sciences, Engineering and Technology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
