Determination of the possibility of using phosphorus slag in the road industry

The use of crushed, granulated slag is now a rational direction in the use of phosphorus waste in various areas of construction. The modern state of science and technology and the accumulated experience allow to use almost all types of metallurgical slag for the production of road-building materials. The use of slag from other industries will expand the raw material base and improve its geographical location, increase material production and quality, reduce the distance of material transportation and reduce the road construction cost. The use of slag is an environmental task that will have a social impact. The study theoretically proved and experimentally established the feasibility of laying asphalt concrete coatings with phosphorus slag on roadways. The technology of asphalt–concrete mixture preparations and compaction is developed, which ensures high operational properties of road surfaces. It was established that it is possible to produce homogeneous asphalt concrete with phosphorus slag, gravel, mineral powder, and sand, unlike traditional mineral materials of natural origin, such as limestone.