Активированные минеральные наполнители для модификации цементных композитов

Активированные минеральные наполнители для модификации цементных композитов

Автор: Вдовин Е.А., Коновалов Н.В.

Журнал: Строительство уникальных зданий и сооружений @unistroy

Статья в выпуске: 7 (105), 2022 года.

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Объектом исследования являются активированные минеральные наполнители, используемые для модификации цементных композитов. Модификация активированными наполнителями цементных композитов дает возможность повысить уровень прочностных показателей дорожно-строительного материала, а также снизить содержание основного вяжущего. В качестве минерального наполнителя использовался доломит. Механоактивация наполнителей проводилась в вихревом аппарате Vortex 297, при различном времени экспозиции. Для обеспечения эффективной активации определялись оптимальный коэффициент заполнения помольной камеры и размер ферромагнитных частиц. Изучен характер распределения дисперсности частиц минерального наполнителя на лазерном анализаторе в зависимости от времени активации. Состояние поверхности минерального наполнителя после активации оценивалось методом кислотно-основных взаимодействий с определением свободной поверхностной энергии, уровень показателей которой характеризует способность поверхности к межфазному взаимодействию. Установлено влияние времени активации и содержания минерального наполнителя на прочность при сжатии образцов цементного камня. Определено оптимальное время активации минерального наполнителя в аппарате вихревого слоя.

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Минеральные наполнители, механическая активация, вихревой аппарат, свободная поверхностная энергия, дисперсность

Короткий адрес: https://sciup.org/143182692

IDR: 143182692   |   DOI: 10.4123/CUBS.105.11

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