![]() The impact of interface bonding conditions was more significant on the base moduli than on the AC moduli. Based on the results of this analysis, it was found that the interface bonding conditions significantly influenced the accuracy of the backcalculation analysis. ![]() The results of the proposed methodology were verified through evaluation of extracted cores. BISAR 3.0 software was then used in conjunction with MODULUS 6.0 to backcalculate the asphalt concrete (AC)/base bonding condition and to correct the backcalculated base layer moduli. These measurements were used to backcalculate the layer moduli using MODULUS 6.0 software. To achieve these objectives, a new methodology was developed based on FWD measurements collected in 46 sections in Louisiana. In addition, the effect of interface bonding conditions on the backcalculated layer moduli was investigated. The objective of this study was to assess interface bonding conditions between pavement layers using falling weight deflectometer deflection measurements. Interface bonding conditions between pavement layers have a major impact on pavement performance.
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