Technique and technology of silicates Technique and technology of silicates Техника и технология силикатов 2076-0655 110542 10.62980/2076-0655-2025-343-357 fmvgln ОСНОВНАЯ РУБРИКА MAIN RUBRIC ОСНОВНАЯ РУБРИКА EFFECT OF ZIRCONIUM DIOXIDE AND ALUMINUM OXOCHLORIDE ADDITIVES ON THE HYDRATION KINETICS OF HIGH-ALUMINA CEMENT, STRUCTURAL-PHASE AND STRENGTH CHARACTERISTICS OF CEMENT STONE ВЛИЯНИЕ ДОБАВОК ДИОКСИДА ЦИРКОНИЯ И ОКСОХЛОРИДА АЛЮМИНИЯ НА КИНЕТИКУ ГИДРАТАЦИИ ВЫСОКОГЛИНОЗЕМИСТОГО ЦЕМЕНТА, СТРУКТУРНО-ФАЗОВЫЕ И ПРОЧНОСТНЫЕ ХАРАКТЕРИСТИКИ ЦЕМЕНТНОГО КАМНЯ 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 29 12 2025 29 12 2025 32 4 343 357 19 12 2025 https://tsilicates.ru/en/nauka/article/110542/view

В работе изучена кинетика гидратации высокоглинозёмистого цемента ВГЦ-70 с добавками ZrO2 и AlOCl и их влияние на состав, структуру и прочность цементного камня. Показано, что в присутствии ZrO2 (10 мас.%) происходит снижение скорости гидратация цемента и уменьшение содержания гидроалюминатов САН10, С2АН8 и гидроксида алюминия в продуктах гидратации. Добавка оксохлорида алюминия AlOCl (0,5 мас.%) ускоряет гидратацию и способствует повышению прочности цементного камня при сжатии в возрасте 7 сут и более. Введение в цемент ZrO2 способствует формированию более плотной структуры цементного камня и повышению его остаточной прочности при термообработке в интервале 400-1200°C. Установлено, что при введении в исследуемые цементы в качестве заполнителя плавленого корунда контактная зона между цементной матрицей и зёрнами заполнителя непрочная, вдоль неё происходит формирование трещин при нагружении образца. Использование в качестве заполнителя дроблёного ВГЦ-клинкера приводит к формированию прочного контакта между цементной матрицей и зёрнами заполнителя, что способствует существенному повышению прочности материала.

The paper studies the kinetics of hydration of high-alumina cement HAC-70 with ZrO2 and AlOCl additives and their influence on the composition, structure and strength of cement stone. It has been shown that in the presence of ZrO2 (10 wt.%), the rate of cement hydration decreases and the content of hydroaluminates CAH10, C2AH8 and aluminum hydroxide in the hydration products decreases. The addition of aluminum oxochloride AlOCl (0.5 wt.%) accelerates hydration and helps increase the compressive strength of cement stone at the age of 7 days or more. The introduction of ZrO2 into cement promotes the formation of a denser structure of cement stone and an increase in its residual strength during heat treatment in the range of 400-1200°C. It was established that when fused corundum was introduced into the studied cements as a filler, the contact zone between the cement matrix and the filler grains was weak, and cracks formed along it when the sample was loaded. The use of crushed HAC clinker as a filler leads to the formation of a strong contact between the cement matrix and the filler grains, which contributes to a significant increase in the strength of the material.

 высокоглинозёмистый цемент диоксид циркония оксохлорид алюминия кинетика гидратации гидроалюминаты кальция структура и прочность цементного камня термообработка. high-alumina cement zirconium dioxide aluminum oxochloride hydration kinetics calcium hydroaluminates structure and strength of cement stone heat treatment. 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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