Abstract
The technique of determining the pavement layers strength are given. The results of a field (on the road) testing of asphalt concrete Highway pavement using georadar vibration-acoustic set of equipment are presented. The hardware complex is proved and developed for the automobile roads express-control. Functioning of hardware complex and technique for pavement layer durability definition are described. The ways of the further perfection for the georadar vibrating-acoustic technology are considered.
Highlights
One of the main and most important features of road traffic safety is the road quality
The location of the “observation point” in depth is set using the software of the system control computer, and the signal processing of the virtual “vibration sensor” is set using the software of the spectrum analyzer (SA) control computer
The method is based on the simultaneous measurement of radar and acoustic vibrations parameters that are spread in the layers of road pavements
Summary
One of the main and most important features of road traffic safety is the road quality. To control the quality of highways today, the technology of measuring cracks on asphalt surface, based on the definition of photometric data [1,2,3], has become widespread. Among GPR methods, multifunctional georadar development has become widespread, allowing, along with the surface quality of highways, to determine the thickness of their coatings, the dielectric constant of both layers of pavements and subsurface soils [14,15,16,17]. Analyzing all the methods and devices used to determine the quality of roads, we note that there is no fast and affordable express control measuring method of the pavement layers strength characteristics, while simultaneously recording the presence of voids, water inclusions, heterogeneous, internal damage, etc. A distinctive feature of the proposed technique and the developed equipment is the possibility of choosing the depth of received radar signals modulated by vibration-acoustic oscillations propagating in the pavement layers being studied, which makes it possible to measure the strength characteristics of the pavement layers
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