Selection of effective material for road construction

Abstract

The object of research is the technology of road surface construction using alternative materials and the possibility of introducing automated systems to increase productivity. The main hypothesis of the study lies in the found alternative material, with the help of which it is possible to reduce the cost of road construction and increase the quality and service life. To reduce the cost of roads, it is necessary to create new construction technologies using innovative or alternative materials, use the latest mechanisms and introduce automated and robotic systems. This can be achieved if to carefully study the technology of the construction process device. One of the materials of the road surface is crushed stone, gravel and sand. Let’s consider as one of the alternative options for mining waste – crushed slag. When determining the main physical and mechanical properties of crushed slag, the standard method for testing crushed stone in stationary laboratory conditions was used. In the course of the study, the methods of system analysis and generalization were used, as well as the method of material testing. The authors of the work analyzed the technological processes of road construction and proposed a material based on the test results – crushed slag from a ferroalloy plant. During the tests, it was confirmed that the material is an alternative quarry crushed stone. Ferroalloy crushed stone has the same field of application, strength, density, frost resistance, but the cost is an order of magnitude less than a ton, creates an economic effect of 31.93 USD per ton. This makes it possible to reduce the cost of the road surface and ensures the quality that meets the regulatory requirements, and the production of modern technologies will reduce the time standard at some construction sites.

When testing crushed slag, the results obtained confirm that this material meets all the requirements and may well replace granite crushed stone in the construction of roads for various purposes. Such material can be used not only in Ukraine, but also in countries with similar requirements for the composition of the roadway.