FORECASTING OF DURABILITY OF ASPHALT-CONCRETE PAVEMENT ON THE BASIS OF THEIR VIBRATION LOADING RATE

The problem of low durability of road pavement with asphalt-concrete surfacing is considered as one of the most important issues in highway sector. So the actual service life of the asphalt-concrete pavement in Russia does not exceed 3-5 years. Poor condition of automobile roads is an obstacle for the development of national economy that leads to significant annual economic losses. At the present time this problem does not have a single solution. Even having semblant good conditions of roads in Europe and America the problem of low durability is still a challenge in these countries as well. And these problems becomes more and more actual with every passing year. The executed researches investigations have made it possible to develop a hypothesis that designed road constructions do not have the required durability even at the designing stage because while making strength calculations vibration of road constructions is not taken into account. The vibration loading becomes rather important at the present day because character of road construction loading has been changed rather substantially. Due to this deflections of the road constructions are diminishing but their increased vibration accelerates destruction processes and significantly reduces durability of the constructions. The developed theory of vibration destruction allows to control a vibration mechanism, to form vibration proof road constructions and predict their residual life of pavements that provides the possibility to organize efficient repair measures.