ANALYSIS OF THE EFFECTIVENESS OF THE USE OF LIQUID DEICING REAGENTS TO REDUCE THE FREEZING FORCE OF ICE FORMATIONS ABOVE THE ROAD SURFACE

Аннотация

One of the key problems of winter maintenance of highways in Central Asia and Kazakhstan remains the inefficiency of traditional methods of dealing with snow and ice in conditions of variable temperature and high humidity. In particular, various types of snow and ice formations are observed on a number of sections of the road network, which cannot be removed mechanically without damaging the coating. In this regard, there was a need to evaluate the effectiveness of the use of deicing reagents in liquid form. The article presents the results of experimental studies conducted by the authors on sections of the Almaty - Ust–Kamenogorsk highway and on the entrance roads to Almaty and Ust-Kamenogorsk. The physico-mechanical characteristics of snow and ice rolling and the effectiveness of anti-icing solutions based on bischofite (MgCl2·6H2O) with concentrations of 5, 10, 15 and 18% were studied. Field measurements were carried out with an interval of 10 minutes, recording changes in the coefficient of adhesion. Correlations have been established between the concentration of the reagent, the time of action and the adhesion parameters, as well as the distribution rates of solutions depending on the density and thickness of the ice.