Methodological Approaches in Assessing the Possibility of Using Waste Electrocorundum Materials in Concrete Compositions

Abstract

Heat-resistant concretes have been successfully used in many heat units and building structures. Making concrete heat-resistant is possible through the development of a heat-resistant phosphate matrix, aluminophosphate binder. The compositions of high-refractory concretes on aluminophosphate binder with electrocorundum and chrome-aluminous slag have relatively high strength up to 70 MPa after heat treatment. Wastes generated as a result of technological activities of enterprises have several technical and economic advantages as industrial raw materials. After passing the production possibility frontier, the material not only has not lost its properties, but became more prepared with the position of the grain composition and growth of specific surface area, heat treatment for use in the technology of concrete and refractory concrete, in particular, as heat-resistant fillers. The methodological approach in the study of defective ceramic-bond abrasive wheels has been proposed herein. The chemical, grain and mineralogical analyses of the material after mechanical grinding allowed us to define it as an aggregate for concrete in order to give it heat-resistant properties. The obtained concrete composition has a tensile strength 2.5 times higher than conventional cement composition of concrete and thermal resistance (water, 800°C) of the composition with heat-resistant filler has increased in 5 times.

Heat-Resistant Composite Materials Based on Secondary Material Resources

“…Portland cement modified with double superphosphate in the presence of a plasticizer was used as a binder. Preliminary tests of the developed compositions of heat-resistant compositions using high-temperature aggregates based on mechanical engineering and metallurgy wastes yielded positive results in terms of increasing compressive strength and thermal resistance of samples of heat-resistant compositions [8][9][10][11][12][13].…”

Expansion of Concrete Functionality due to Use of New Hydrophobic Additives

“…So the creation of new materials based on a variety of waste and byproducts of various industries as mineral and chemical concrete modifiers is essential. Among the additives of organic nature, the waste products of acrylic paints, used as a modifying agent for concrete, are of scientific and practical interest [9]. When modifying by such materials functionality of concrete compositions greatly extend, which allows their use in aggressive medium.…”