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Information × Registration Number 0220U100396, 0119U002253 , R & D reports Title Alkali-sulfate activated composite cements with high early strength and low-energy concrete based on them popup.stage_title Head Registration Date 17-01-2020 Organization Lviv Polytechnic National University popup.description2 The properties (dispersion, water demand, bleeding, pozzolanic activity) of the main mineral components were evaluated. Using the laser diffraction method, particle size distributions of mineral additives of different material composition were established, which allows to obtain a dense microstructurally-designed composite system. To accelerate the hydration activity of alkaline-active polymineral composite systems, the effect of alkaline and sulfate activators and organic modifiers on the synthesis of early and standard strengths by the method of mathematical orthogonal central-compositional planning of the experiment was investigated. It is shown that the combination of organic modifier and alkaline activator allows to partially compensate slow hydration rate in polymineral low-clinker systems (clinker factor - 0.50) containing high content of supplementary cementitious materials. Based on the results of the performed research, a batch of alkaline-activated composite Portland cement with high early strength was produced at JSC Ivano-Frankivsk Cement. The implementation of the developed alkali-activated composite Portland cement in the production of commercial concrete provides a reduction of energy and resource intensity, cost of building structures while ensuring rapid construction rates, and due to the reduced clinker factor 0.65-0.50 - reduction of CO2 emissions and environmental protection Product Description popup.authors Ivashchyshyn Hanna S. Geviuk Iryna M. Gogol Marko M. Gogol Myron V. Demkiv Myhaylo M. Kilochko Nazar I. Kirakevych Iryna I. Kaminskyi Andrii T. Konanec Oleh Kostiuk Igor H. Kochubei Viktoriia V. Kropyvnytska Tetiana P. Marushchak Uliana D. Melnyk Volodymyr M. Olevych Yurii V. Pozniak Oksana R. Semeniv Roksolana M. Semchyshyn Volodymyr A. Sydor Nazar I. Chekaylo Mukola V. Shevchyk Halyna Ya. popup.nrat_date 2020-04-02 Close