IMPROVEMENT OF THE NON-DESTRUCTIVE METHOD FOR DETERMINING THE MECHANICAL CHARACTERISTICS OF ELEMENTS OF MULTILAYER STRUCTURES ON THE EXAMPLE OF PAVEMENTS

The article is devoted to solving the urgent problem of improving method nondestructive testing condition non-rigid road clothes. In addition previously developed approach determining mechanical parameters materials structural layers nonrigid coverings based on inverse coefficient restoring operational elastic modules providing specified displacement fields, an was that allows energy dissipation in structure multilayer pavement correction dynamic hysteresis loops recorded field and calculated using mathematical model VAT. presents results numerical simulation for two different variants structures. possibilities correcting shape their area by varying tangents loss angles a medium modulus homogeneous half-space are shown. complex values clothes made it possible fully take into account processes attenuation at distance from point application load. During correction, found them have effect areas nature At same time, underlying not limited thickness greatest extent (which led increase 120 150 MPa construction with reinforced non-reinforced base 170 160 MPa, respectively), decrease dissipated This primarily due tangent angle half-space. obtained obviously related patterns boundaries contacting pavement, also all anomalies delaminations Within framework this article, surface were first deformation areas, possibility comparison those registered experimentally proved.