Abstract
This paper presents the reasons of interface bond failures on National Highway-5 (N5) and remedial measures to counter those failures. Based on field investigation and assumptions, the pavement was analysed by General Analysis of Multi-layered Elastic System (GAMES) software. Different interface conditions ranging from full bond to full slip were analysed by GAMES. Results indicate that combination of interface bond condition and overloading can reduce pavement life significantly. Analysis also suggests that interface bonding condition between two asphalt layers can be improved by converting lower asphalt layer into granular base layer or combining two asphalt layers into single asphalt layer. These measures were found to be applicable for N5 in Bangladesh.
