Research and verification of transfer model for roughness conditions of pavement construction

In order to study the transfer law of roughness during asphalt pavement construction, a mathematical model concerning the effect of sublayer, paving layer, random factors and paving materials compactness on final surface layer roughness was established through theoretical deduction and data statistical analysis. The critical conditions of sublayer roughness transfer to final surface layer were determined through the application of the Error Propagation Theory, allowing to further establish, the transfer model for roughness conditions in asphalt pavement construction, internal relationships among paving roughness, initial compactness and final surface layer roughness were also clarified. Moreover, the best initial compactness under different paving smoothness was determined and the transfer model was verified using typical engineering test data.