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Information × Registration Number 0224U001837, 0123U101831 , R & D reports Title Technological bases of creating especially fast-hardening nanomodified alkaline portland cements and concrete mixtures for emergency restoration of concrete structures popup.stage_title Head Kryvenko Pavlo V., д.т.н. Registration Date 31-01-2024 Organization Kyiv National University of Construction and Architecture popup.description2  The object of research is methods of managing the processes of structure formation of nanomodified alkaline portland cements in the direction of increasing early and design strength, elastic-plastic properties and temperature resistance. The subject of research is particularly fast-hardening nanomodified alkaline portland cements. The purpose of the work is to create new scientific knowledge regarding the development of applied and technological solutions for obtaining especially fast-hardening concretes and mortars based on alkaline nanomodified Portland cement. Research methods: physico-chemical methods (X-ray phase analysis, differential thermal analysis, electron microscopy), physico-mechanical methods for determining hardening periods, strength properties of cements (flexural strength, compressive strength). Specially fast-hardening nano-modified alkaline portland cements have been developed as the basis of concretes and mortars for emergency restoration and strengthening of concrete structures. The principles of composite construction of binders of the "portland cement - soluble sodium silicates - granulated blast furnace slag" system with the predicted rate of strength gain are revealed. Measures to control the consistency of the dough of nanomodified alkaline portland cements and its preservation over time due to the combined use of modifiers of organic and inorganic origin are proposed. EMERGENCY RECOVERY, EXTRA-QUICK HARDENING PORTLAND CEMENT, ALKALINE ACTIVATION, NANOMODIFICATION, SOLUBLE SODIUM SILICATES, GRANULAR FUEL Slag, HARDENING TIMES, STRENGTH, FRAGILITY COEFFICIENT Product Description popup.authors Bilan Yaroslav V. Bondarenko Serhii V. Helevera Oleksandr G. Husiev Oleksii M. Konstantynovskyi Oleksandr P. Oliinyk Andrii A. Rudenko Ihor I. Smeshko Volodymyr V. Chekhovska Alla V. Chekhovskyy Oleksandr V. popup.nrat_date 2024-01-31 Close