Modified epoxy composites with the use of local aggregate for transportation structures
Increasing attention is paid to the problem of increasing the durability of building materials and products used for the manufacture of transport structures. In this regard, the creation of building materials and products that improve their performance, increase efficiency, reduce material consumption, cost and labor intensity of production is a major task in the field of construction materials science. One of the ways to increase the durability of buildings and structures is the use of composite materials on a polymer binder. The article presents the results of research in the development of effective compositions of frame polymer composites based on epoxy binders modified with urea resins and amidopolyamines using local fillers for anti-corrosion protection of building structures. Presents the study of physico-chemical processes occurring in epoxy composites modified urea resin and amidopolyamine by the method of IR-spectroscopy. The dependence of changes in the properties of epoxy composites with the introduction of modifying additives was revealed. It was found that in epoxy polymer concrete urea resin serves as a plasticizer, and amidopolyamines are flexibilizers. Physical and mechanical properties of frames and frame composites on local organic and inorganic fillers are investigated. The behavior of materials under the influence of chemical and biological aggressive media has been studied, on the basis of which compositions are proposed that can ensure long-term and reliable operation of structures and structures in aggressive chemical and biological environments. The practical implementation of the developed compositions in the manufacture of protective coatings for building structures.