phmathВестник Государственного университета просвещения. Серия: Физика-МатематикаBulletin of Federal State University of Education. Series: Physics and Mathematics2949-50832949-5067Federal State University of Educationphmath-329Research ArticleФИЗИКАPHYSICSСкорость звука и модуль упругости Юнга смесей иллита и летучей золыSOUND VELOCITY AND YOUNG MODULUS OF ILLITE FLY-ASH MIXTURESГуланТомаш докторантHulanT. .tomas.hulan@ukf.skОндрушкаЯн младшийOndruskaJ. .jondruska@ukf.skПодобаРудольф младшийPodobaR. .rudolf.podoba@ukf.skТрникАнтонTrnikA. .noemail@neicon.ruМедведьИгорьMedvedI. .noemail@neicon.ruУниверситет Константина Философа НитраРоссияConstantine the Philosopher University NitraRussian FederationУниверситет Константина Философа Нитра; Чешский технический университетРоссияConstantine the Philosopher University Nitra; Czech Technical UniversityRussian FederationУниверситет Константина Философа Нитра; Словацкий технический университетРоссияConstantine the Philosopher University Nitra; Slovak University of Technology BratislavaRussian FederationУниверситет Константина Философа Нитра; Чешский технический университетРоссияCzech Technical UniversityRussian Federation201308012023025463Copyright © Гулан Т.д., Ондрушка Я.м., Подоба Р.м., Трник А..., Медведь И..., 20232023Гулан Т.д., Ондрушка Я.м., Подоба Р.м., Трник А., Медведь И.Hulan T..., Ondruska J..., Podoba R..., Trnik A..., Medved I...Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.physmathmgou.ru/jour/article/view/329

Образцы из иллита с различным содержанием летучей золы были исследованы при комнатной температуре после обжигов при температурах в интервале 20°C 1100°C. Измерение скорости звука (СЗ) и модуля упругости (МУ) осуществлялись методом импульсного возбуждения свободных поперечных колебаний. Для определения СЗ и МУ необходимо знать плотность и размеры образца и резонансную частоту. Потеря массы возрастает с ростом температуры обжига и достигает 8% в зависимости от содержания летучей золы. Изменения объёма образцов до 500°C были незначительными и увеличились до 5 % при температурах обжига свыше 900°C. Значительный рост СЗ и МУ наблюдались свыше 900°C, что связано со спеканием.

Illite samples with different content of fly-ash were investigated at room temperature after firing at temperatures from an interval of 25 1100 °C. The measurement of sound velocity (SV) and Young modulus (YM) were performed by the impulse excitation method based on the free flexural vibration. To determine SV and YM is necessarily to know the bulk density and dimensions of the sample as well as resonance frequency. It was found out that mass loss increases with the firing temperature and reaches up to 8 % depending on the fly-ash content. The volume changes of the samples were negligible up to 500 °C. The significant changes of the volume up to 5 % were observed for temperatures higher than 900 °C. Significant changes of SV and YM were observed for temperatures over 900 °C, which is connected with sintering of the sample.

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The authors declare that there are no conflicts of interest present.