Technique and technology of silicates Technique and technology of silicates Техника и технология силикатов 2076-0655 105848 10.62980/2076-0655-2025-283-297 kuyigr ОСНОВНАЯ РУБРИКА MAIN RUBRIC ОСНОВНАЯ РУБРИКА FORMATION OF HYDRATE PHASES AND STRUCTURE FORMATION OF CEMENT STONE DURING HYDRATION OF ZIRCONIUM-CONTAINING HIGH-ALUMINA CEMENTS ФОРМИРОВАНИЕ ГИДРАТНЫХ ФАЗ И СТРУКТУРООБРАЗОВАНИЕ ЦЕМЕНТНОГО КАМНЯ ПРИ ГИДРАТАЦИИ ЦИРКОНИЙСОДЕРЖАЩИХ ВЫСОКОГЛИНОЗЕМИСТЫХ ЦЕМЕНТОВ Кривобородова Светлана Юрьевна Krivoborodova Svetlana Yur'evna skrivoborodova@rambler.ru Коршунов Андрей Владимирович Korshunov Andrey Vladimirovich korshunovav@mgsu.ru

доктор химических наук;

doctor of chemical sciences;

 Московский государственный строительный университет Moscow State University of Civil Engineering 30 09 2025 30 09 2025 32 3 283 297 21 08 2025 10 09 2025 https://tsilicates.ru/en/nauka/article/105848/view

Исследован процесс гидратации цирконийсодержащих высокоглиноземистых цементов (85-90 мас.% CA2) с добавками ZrO2 и AlOCl, введенными на этапе обжига клинкера. На основе результатов анализа состава жидкой фазы и твердой фаз установлено, что в раннем возрасте модифицированные цементы гидратируются медленнее, а затем этот процесс ускоряется и по истечении 21 сут они опережают по степени гидратации контрольный цемент ВГЦ-70. Продукты гидратации цирконийсодержащего цемента к 28 суткам содержат метастабильные гидроалюминаты CAH10, C2AH8, гидроксиды алюминия и циркония, тогда как для контрольного высокоглиноземистого цемента более характерны C3AH6, C2AH8 и Al(OH)3. Одновременное присутствие цирконий- и хлоридсодержащих фаз в большей степени снижает скорость гидратации и одновременно способствует формированию более однородной плотной структуры цементного камня.

The hydration process of zirconium-containing high-alumina cements (85-90 wt.% CA2) with additives of ZrO2 and AlOCl introduced at the clinker firing stage was studied. Based on the results of the analysis of the composition of the liquid phase and solid phases, it was established that at an early age, modified cements hydrate more slowly, and then this process accelerates and after 21 days they are ahead of the control cement VGC-70 in terms of hydration. The hydration products of zirconium-containing cement by 28 days contain metastable hydroaluminates CAH10, C2AH8, aluminum and zirconium hydroxides, whereas for the control high-alumina cement, C3AH6, C2AH8 and Al(OH)3 are more characteristic. The simultaneous presence of zirconium- and chloride-containing phases significantly reduces the rate of hydration and at the same time promotes the formation of a more uniform dense structure of cement stone.

 высокоглинозёмистый цемент алюмоцирконат кальция цирконат кальция гидратация гидроалюминаты кальция структура цементного камня high-alumina cement calcium aluminozirconate calcium zirconate hydration calcium hydroaluminates structure of cement stone. Работа выполнена в НИУ МГСУ в рамках реализации Программы развития университета «ПРИОРИТЕТ 2030». Проект 3.1 «Научный прорыв в строительной отрасли – новые технологии, новые материалы, новые методы». The work was carried out at NIU MSCU within the framework of the University Development Program “PRIORITY 2030”. Project 3.1 “Scientific breakthrough in the construction industry - new technologies, new materials, new methods”

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