Analysis of Remaining Service Life for Flexible Pavement Using Mechanistic-Empirical Methods

Abstract

This study aims to analyze pavement performance to predict the remaining service life and its handling. This research utilized mechanistic-empirical methods, specifically the KENPAVE program to analyze the strain on the pavement, the AASHTO 1993 to predict the remaining service life, and the 2017 Road Pavement Design Manual (MDP 2017) to recommend alternative treatments in the form of new pavement. This study discovered a horizontal tensile strain value of 0.0002998 and a vertical compressive strain of 0.0004022. Using the Asphalt Institute equation, the repetition value of the fatigue cracking load was 1,047,484.63 ESAL, and the repetition value of rutting load was 2,172,928.92 ESAL. Prediction of remaining service life due to traffic loads using the AASHTO 1993 equation yielded a residual service life value of 1.03% fatigue cracking in the second year and the remaining rutting service life of 24.79% in the third year. The results revealed that the pavement was unable to withstand traffic loads according to the planned age. Therefore, MDP 2017 was used to provide alternative treatments and resulted in the alternative handling presented, recommended as a treatment for the study site.