Batrakova A. Methodology of nonrigid road pavements monitoring with application of georadar technologies

object - non-rigid pavement; goal - the development of methodological foundations of the system of monitoring non-rigid road pavements with GPR technology for the diagnostic and prognose of their condition as a basis for the appointment of regulatory measures to ensure the technical and operational performance of the pavement; methods - analysis of wave propagation in stratified medium, analytical, mathematical, statistical, parametric optimization, mechanics of deformable solid; novelty - first developed formal mathematical instruments for monitoring non-rigid road pavements using GPR technology, which provides a flexible approach to the study of processes and patterns regardless of the design features of a non-rigid pavement type and allows integration into any system state management pavement; the theoretical and experimental method for quantitative evaluation of the thickness of the pavement structural layers by bringing an experimental method for obtaining calibration signals GPR and theoretical methods of restore the layers dielectric constant; first developed a method for positioning and identification of subsurface cracks in monolithic layers of pavement on the basis of the analysis of the polarization state of the signals; the theoretical-experimental method for estimating subsoil moisture and density of the base layers of the digital materials on the basis of methods of interpretation of GPR data, experimentally established dependence between dielectric constant and physical and mechanical properties of materials; developed a system for quantitative evaluation of the technical condition of pavement structure as a result of GPR surveys; developed adaptive dynamic models to predict the state of the pavement at a local level by bringing the results of GPR survey and the use of methods of analysis of time series; an improved method for predicting the state of road pavements at road network, based on the method of absorbing Markov chains by developing a new method for the formation of the transition probability matrix with incomplete data; first scientifically substantiated directions of application of GPR survey results in the appointment of repair work; practical results - developed a set of practical tools for diagnostic, prediction of the state of the pavement as a result of GPR diagnostic, developed and implemented hardware measuring complex "ODYAG-1"; introduction - regulatory and technological documents road sector, enterprises of the State Agency of Ukraine roads "Ukravtodor"; аpplications - design, construction, reconstruction, repair and maintenance of non-rigid pavement type on the network of public roads in Ukraine.