ABSTRACT
A mechanistic model of flexible pavement was considered and constructed to study the effects of shear modulus on performance of various pavement layers. The objective of this study was to quantify the effects of interlayer bonding by varying of the shear modulus of the contact layer. Flexible pavements are complex structures consisting of several layers of asphalt and granular materials. This pavement layers including overlays are subjected to wheel load due to improper bonding may cause slipping of layers and which will induce parabolic deformation on the top surface of the pavement. The elastic property is influenced mainly by shear modulus of the contact layer with other parameters being constant. Bonding is assessed due to increase or decrease of critical stress values when static loading condition is maintained with constant elastic properties except shear modulus for the contact layer. Stress distribution is extremely influenced by the adhesion conditions at the layer interface. The response of the pavement is assessed from the critical stresses developed. Various analysis software such as KENPAVE, ABACUS, BISAR and ANSYS are available. Present study involves analysis using ANSYS software. Critical stress values for varying shear modulus in range for 9000kg/cm2 to 12000kg/cm2 have effect on the bonding characteristics which is the key factor for pavement response. Performance is determined due to the effect of the elastic properties.
