**5. Conclusions**

The work presented in this paper focused on a better evaluation of structural behavior of asphalt pavement. The analytical solution based on the layered theory was improved by introducing a shear reaction modulus (Ks) to take into account the interface bonding condition between the asphalt layers. It was implemented in a numerical program using Matlab and then applied in the following parts of the research study:


With the procedure presented in this paper, the field condition of the interface bonding between asphalt layers can be assessed for better evaluation of pavement behaviors and for further performance assessment. Future works will focus on improving this procedure without possessing pavement layers modulus as among input parameters. For the experimental full-scale pavement structures, the interface bonding condition between the asphalt layers of the investigated pavement structures can be evaluated at different temperatures under different load levels together with the evolution of pavement damage during the accelerated test.

**Author Contributions:** All the authors contributed the conceptualization and methodology of this work; the theoretical development and numerical implementation together with the sensitivity analysis as well as the experimental case study were contributed by M.-T.L. and M.L.N.; the original draft was preprared by M.-T.L.; its review was performed by Q.-H.N. and M.L.N.; the editing of the draft was finalized by all the authors. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Acknowledgments:** The authors acknowledged the managers and staffs of the IFSTTAR APT facility for providing support to perform experimental study on full-scale pavement.

**Conflicts of Interest:** The authors hereby declare no conflict of interest regarding the publication of this article.
