The flexible pavement sections were constructed with 1, 2, 3, 4, 5. For almost all sections used, fatigue cracking is controlling criteria. In an attempt to develop rational pavement design. The results show that using MEPDG results in thinner AC sections, but the amount of difference is dependent to performance criteria chosen. An analysis has been made on the sections using MEPDG and new pavement sections have also been designed and the differences have been illustrated. Five previously constructed pavement sections designed by empirical AASHTO method have been used in this study. AASHTO Design Based on Serviceability Decrease (AASHTO, 1993) Flexible Pavements 13 14. The objective of this paper is to compare the design and performance between the empirical AASHTO and the MEPDG method using highest level of data accuracy. The method of design of flexible pavement as recommended by aashto is. Mechanistic-empirical pavement design Guide is a new method proposed under NCHRP Project 1-37A and 1-40D which is based on numerical models.
Mechanistic-empirical pavement design Guide (MEPDG) is an effort to address these limitations.
However limitations of the empirical approach are becoming increasingly apparent with developments and increased knowledge in the fields of pavement mechanics and material science. Comparison of mechanistic-empirical and empirical flexible pavement design procedures of AASHTO: a case studyĬurrently, the most current method for pavement design is AASHTO (1993) method which is an empirical method. The AASHTO MEDG Method of flexible pavement design is not generally suitable for hand calculation as it includes complex calculation of the horizontal strains.