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The Mechanism of the First Hydration-Dehydration Cycle of Pure α- and β-CaSO4•0.5H2O
المؤلفون المشاركون
Abu Zeitoun, E.
Pritzel, C.
Sakalli, Y.
Trettin, R.
المصدر
Advances in Materials Science and Engineering
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-07-03
دولة النشر
مصر
عدد الصفحات
11
الملخص EN
The objective of this research was to understand the dehydration mechanism of technical dihydrate and the variation of the physical properties of β-hemihydrate after the first hydration-dehydration process.
In this study, the recycling mechanism of different hemihydrate types as raw material was investigated.
The influence of the first hydration-dehydration process on the hydration rate, microstructure, and mechanical properties of recycled hemihydrate were characterized by differential calorimetric analysis (DCA), calcium ion-selective electrode (Ca2+-ISE), conductivity, particle size distribution (PSD), scanning electron microscopy (SEM), and X-ray diffraction (XRD).
The results showed that the formed hemihydrate after the first hydration-dehydration process differs in its properties than the unrecycled hemihydrate in some characteristics such as the morphological structure, number of surface, and side defects due to the grinding process after the first hydration step.
In addition to the grinding step, the calcination process was responsible for increasing the number of defects on the crystal surface, which leads to a change in setting time and the microstructure of the recycled hemihydrate.
Therefore, after the 1st reaction cycle of β-HH, the compressive strength decreases due to a decrease in the hemihydrate crystal size, an increase in the surface area, and an increase in the amount of water required to perform the hydration reaction.
The obtained hemihydrate after the first hydration-dehydration process was in β form due to the applied calcination process after the first cycle.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Abu Zeitoun, E.& Pritzel, C.& Sakalli, Y.& Trettin, R.. 2020. The Mechanism of the First Hydration-Dehydration Cycle of Pure α- and β-CaSO4•0.5H2O. Advances in Materials Science and Engineering،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1127873
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Abu Zeitoun, E.…[et al.]. The Mechanism of the First Hydration-Dehydration Cycle of Pure α- and β-CaSO4•0.5H2O. Advances in Materials Science and Engineering No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1127873
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Abu Zeitoun, E.& Pritzel, C.& Sakalli, Y.& Trettin, R.. The Mechanism of the First Hydration-Dehydration Cycle of Pure α- and β-CaSO4•0.5H2O. Advances in Materials Science and Engineering. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1127873
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1127873
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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