PROPERTIES OF FUEL ASHES OF VARIOUS TYPES AS COMPONENTS OF BITUMEN EMULSION

Abstract

This paper presents the results of a study of the variability of physico-mechanical and physico-chemical properties, as well as structural features of aluminosilicate technogenic raw materials from wastes of fuel and energy enterprises in the form of various types of ashes as components of bitumen emulsions used in the composition of a hybrid binder (Portland cement - bitumen emulsion) for cement-asphalt concrete. Based on the analysis of the set of characteristics of fuel ashes, the possibility and expediency of their introduction into the composition of bitumen emulsions were determined with the aim of obtaining bitumen layers in the structure of cement-asphalt concrete, allowing to improve its operational characteristics. As a result of the analysis, the most effective diluent additive was identified among the studied technogenic raw materials, which would allow keeping its properties at the stage of introduction into the emulsion, and at the stage of forming the structure of the final composite to provide the desired properties.