25. New Materials for Road Construction

The burned rocks of some mine dumps of the Rostov region are evaluated. The physicomechanical properties of the rocks as raw materials for the construction of the subgrade of the access railway track, the structural layers of pavement are investigated. The properties of fractioned gravel and crushing screenings from burned mine rocks are given. The features of hardening of the massif of a roadbed of burnt rocks of mine dumps are shown. The technology of the subgrade and pavement layers is described. The possibility of using materials from burned mine rocks in the construction of subgrade, the ground of roads and structural layers of pavement has been substantiated. The variants of pavement designs using materials from burnt rocks of mine dumps are considered. Practical work was done on the erection of the subgrade railway track and local technological roads, industrial sites and sidewalks. The successful operation of sections of the railway access road, technological roads and sidewalks confirms the feasibility of using burnt rocks of mine dumps in road construction. The use of mine dump rocks allows us to solve some environmental problems: reduce the number of quarries in the extraction of natural raw materials, preserve the natural landscape of the earth’s surface, free land from dumps, and reduce pollution of water and air basins.