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Information × Registration Number 0225U003007, (0124U001128) , R & D reports Title Development of resource-efficient concrete mixtures and concretes based on recycled concrete structures popup.stage_title Розробка оптимальних рецептурних рішень бетонів загальнобудівельного призначення на основі рециркульованих бетонних конструкцій Head Kovalchuk Oleksandr Yu., Кандидат технічних наук Registration Date 02-05-2025 Organization Kyiv National University of Construction and Architecture popup.description1 The purpose of the work is the development of concrete mixes and concretes based on them with a low-defect macrostructure under the condition of using recycled aggregates. popup.description2 The object of the work is resource-efficient concrete based on recycled concrete products and structures formed during hostilities. The subject of the work is the processes of directed structure formation of artificial stone based on traditional and hybrid alkaline cements, as well as the formation of micro- and macrostructure of concrete, in order to increase its durability and reduce structural defects. The features of the production of effective materials using recycled aggregates, which were formed as a result of the process of processing and classification of the remains of concrete buildings and structures that were destroyed and damaged as a result of hostilities and armed aggression, are studied. The results of the study and the characteristics of recycled aggregates based on recycled concrete structures that were destroyed as a result of the armed aggression of the Russian Federation are presented. The differences in the component composition of the aggregate from traditional, pure analogues are shown, and the presence of pollutants - residues of organic substances and combustion products, which negatively affects the processes of structure formation of cements and concretes based on them, is also shown. The influence of the component composition of concrete using recycled aggregate on the rheological and physical and mechanical properties of the system is determined. It was found that increasing the content of the cement component with an unchanged content of coarse aggregate allows to significantly increase the strength of the system together with the base composition.. Moreover, the strength increases both in the early and late hardening period. The obtained strength indicators (32 MPa at the age of 28 days) correspond to the indicators of the control composition using traditional granite crushed stone of the 5-20 mm fraction. Product Description popup.authors Bilan Yaroslav V. Basarab Oleksandr O. Bondarenko Serhii V. Vykhor Vladyslav V. Hrabovchak Valentyna V. Durytskyi Serhii Yu. Zozulynets Viktoriia V. Kovalchuk Oleksandr Yu. Kopotun Ruslan A. Kryvenko Pavlo V. Mitasov Yevhen Ye. Oliinyk Andrii A. Papuch Ihor L. Popruha Petro V. Razumov Roman V. Chekhovskyi Oleksandr V. Shevchuk Olena M. popup.nrat_date 2025-05-02 Close