Innovative methods for preparing the base of transport highways of the use of technogenic formations of metallurgical production

Abstract

Background: In order to effectively reinforcement problem soils based on clay or fine powdery sand, it is necessary to pre-stabilize them, for example, using granulated blast-furnace slag. Aim: the use of multi-tonnage slags of various nature for highly efficient preparation of bases in the construction of road surfaces. Methods: soils of natural and technogenic origin were considered as the main object of research: clays, sands, asphalt granulate. Physical and mechanical studies of soils of natural origin were carried out in accordance with GOST 5180-2015 Soils. Methods for laboratory determination of physical characteristics, the filtration coefficient was determined according to GOST 25584-2016 Soils. Methods for laboratory determination of the filtration coefficient. The physical and mechanical characteristics of asphalt concrete were determined according to GOST 12801-98 Materials based on organic binders for road and airfield construction. Test Methods. The component composition of the out-of-furnace slag was determined using X-ray phase analysis. Testing of hardened samples was carried out in a water-saturated state according to GOST 10180-20125 Concrete. Methods for determining the strength of control samples. The determination of the water absorption value by the mass of the reinforced soil was carried out according to GOST 12730.3-78 Concrete. Methods for determining water absorption. Results: reinforcement of pre-prepared soils of any nature is effectively carried out using a reduced consumption of cement in combination with the Nanoaktiv-M complex chemical additive and finely ground blast-furnace slag. Conclusion: the complex use of various types of metallurgical slags in soil reinforcement provides an effective solution to the technological, economic and environmental problems of our time.