EXPERIMENTAL RESEARCH OF ADHESION OF BASALT ELEMENTS AND CEMENT-SAND MORTAR FOR EXPEDIENCY OF USE IN THE SEWER ENVIRONMENT

Abstract

At present, there is a tendency in the world to replace steel and cast iron with composite materials with high chemical resistance and durability, which primarily include fiberglass, which has a set of high performance properties. However, currently the requirements for composites have increased, especially in terms of their heat and chemical resistance, resistance to microorganisms, groundwater and wastewater. Composites based on basalt fibers are significantly superior to traditional materials and alloys in their mechanical and physicochemical properties. They have corrosion resistance, chemical inertness, low thermal conductivity, high specific mechanical properties, low specific gravity. Basalt-based products have a number of advantages: high strength, relatively low weight, reliability in operation over a wide range of temperatures, not prone to corrosion and have high chemical resistance. Production and use of basalt fiber materials, composites and products from them are promising and economically feasible. Taking into account the physical- chemical properties of basalt fibers, the use of basalt elements from them as lining of sewer networks and structures is a promising method of their restoration. However, the durability of this depends primarily on the adhesion of basalt elements with cement-sand mortar. The article analyzes the mineral resource base of rocks as a one-component raw material for the manufacture of basalt fiber materials and composites based on them. The analysis of the properties of basalt continuous fibers in comparison with glass fibers of type E and S, carbon and aramid fibers is carried out. The results of the experimental study of the adhesion of basalt elements and cement-sand mortar are presented. The results of the research allow the use of basalt materials to perform repair and restoration work on sewers and structures.