Research of the influence of adhesive additives on the physical and chemical properties of road bitumens
DOI:
https://doi.org/10.18321/cpc552Keywords:
bitumen, adhesive additives, ductility, penetration, viscosity, softening temperature, brittleness temperature, aging resistanceAbstract
The purpose of this study was to solve the following problems: to evaluate the effect of adhesive additives on the physical and chemical properties of bitumen. Carry out a comparative analysis of the bituminous binder without additives and with the use of adhesive additives. Suggest the optimal type and composition of adhesive additives. The article presents the results of a study of the physical and chemical parameters of bitumen using adhesive additives («Wetfix Be», Amdor-9, AlfaDob) and concentrations from 0,2 to 0,6%. Changes in penetration values at a temperature of 25 °C, bitumen viscosity at 0 °C, ring and ball softening temperature, Fraas brittleness temperature, bitumen tensile ability (ductility) were found. The resistance of bitumen to aging after heating was determined by changing the softening temperature, changing the mass (%), residual penetration at 25 °C (%), and changing the absolute values of the brittleness temperature. Based on the results of the research, conclusions were drawn on the selection of surfactants that improve the physical and chemical properties of the bituminous binder.
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