ON THE ISSUE OF DEVELOPING DOMESTIC RESTORATION MATERIALS FOR ARCHITECTURAL MONUMENTS

The article provides an overview of research on the specifics of the use and composition of restoration materials and solutions at different stages of the work. The need is shown for the development of domestic restoration materials that improve the quality of restoration, the long-term preservation of the restored object during operation and provide the possibility of choice in relation to each restoration task. The literature review gives the stages of restoration work of architectural monuments are given, the specifics of which depend on the use of functional additives in various repair mixtures. The review of research on the subject is focused on the importance of solving the problems of replacing imported modifier additives with domestic ones. The authors emphasize that the choice of additives of various functional purposes in prescription formulations should be made considering the compatibility patterns of the components of the materials being restored (including in the form of dry restoration mixtures), have a scientific integrated approach. The analysis of scientific achievements and publications where the solution of this problem has been initiated has shown that there are particular unresolved issues of the general problem to which this article is devoted. Polymer additives of domestic production of various chemical nature used in compositions based on mineral binders are given. Based on the analysis of physico-mechanical, rheotechnological and technological properties of compositions based on mineral binders, the possibility and advantage of using Russian water-soluble polymers in the compositions of restoration materials, taking into account the small dosage and environmental friendliness of these additives, is proved. Previous comparative analysis of conducted studies shows that increasing the range of modifying additives using Russian-made polymers and the production of competitively capable dry building mixes based on them for restoration operations will help to fulfill the task of preserving architectural objects of historical construction that reflect different epochs, an element of national culture and identity, ensuring the continuity of cultures.