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It is widely recognized that the effect of loading at the early stages of hardening enables to increase strength characteristics of cement systems and composites based on them. Of particular interest is a study on the effect of compression of aluminate cements on physicomechanical characteristics, hydration process and phase transformations. The research focuses on maximum compressive and flexural strength, the peak intensity of the main phases and hydrate products, characteristics of DTA curves after early loading, studied by means of physical and chemical methods. The authors note an increased flexural strength of specimens exposed to loading at an early age. The comparison of diffractograms showed that the peaks of the main phases were reduced during the compression stage, as well as the changes in the amorphous structure of the stone.
Рассмотрено влияние сжатия структуры алюминатных цементов на физико-механические характеристики, процесс гидратации и изменение фазового состава. При помощи физико-химических методов изучены предел прочности на сжатие и растяжение при изгибе, интенсивность пиков основных фаз и гидратных продуктов, характер эффектов на кривых ДТА при раннем нагружении. Отмечено увеличение прочности на изгиб образцов, подвергнутых нагрузке в раннем возрасте. Путем сравнения дифрактограмм установлено снижение пиков основных фаз при сжатии структуры, а также различия в аморфности структуры камня.
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Table of Contents
- The phase composition and properties of aluminate cements after early loading
- Фазовый состав и свойства алюминатных цементов при раннем нагружении
- Introduction
- Materials and Methods
- Results and Discussion
- Conclusions
- Acknowledgement
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