Influence of the Nature and Rate of Alkaline Activator on the Physicochemical Properties of Fly Ash-Based Geopolymers
المؤلفون المشاركون
EL Alouani, Marouane
Alehyen, Saliha
EL Achouri, Mohammed
Hajjaji, Abdelowahed
Ennawaoui, Chouaib
Taibi, M’hamed
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-13، 13ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-09-21
دولة النشر
مصر
عدد الصفحات
13
التخصصات الرئيسية
الملخص EN
The influence of alkali cations on mix design of geopolymers is essential for their mechanical, thermal, and electrical performance.
This research investigated the influence of alkali cation type on microscale characteristics and mechanical, dielectric, and thermal properties of fly ash-based geopolymer matrices.
The geopolymers were elaborated via class F fly ash from the thermal plant Jorf Lasfar, El Jadida (Morocco), and several alkaline solutions.
Morphological, structural, mechanical, dielectric, and thermal characteristics of materials synthesized via fly ash with different proportions of KOH and NaOH aged 28 days were evaluated.
The physicochemical properties of class F fly ash-based geopolymers were assessed using X-ray diffraction (XRD), Fourier-transform infrared spectrometry (FTIR), and scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM/EDX) analyses.
Based on readings of the results obtained, XRD and FTIR analysis detected the creation of semicrystalline potassium/sodium aluminate-silicate hydrate (KASH/NASH) gel in the elaborated matrices after the geopolymerization reaction.
The SEM analysis proved the formation of alkali alumina-silicate hydrate gel in the raw material particles after the polycondensation stage.
Experimental compressive strength data indicated that the highest compressive strength (39 MPa) was produced by the alkaline activator (75% KOH/25% NaOH).
The dielectric parameters values of the elaborated materials changed depending of the mass ratios KOH/NaOH.
Dielectric findings demonstrated that geopolymers containing 100% NaOH have better dielectric performances.
The fire resistance study revealed that the geopolymer binders induced by KOH are stable up to 600°C.
Based on these results, it can be deduced that the formulated geopolymer concrete possesses good mechanical, dielectric, and fire resistance properties.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
EL Alouani, Marouane& Alehyen, Saliha& EL Achouri, Mohammed& Hajjaji, Abdelowahed& Ennawaoui, Chouaib& Taibi, M’hamed. 2020. Influence of the Nature and Rate of Alkaline Activator on the Physicochemical Properties of Fly Ash-Based Geopolymers. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1125113
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
EL Alouani, Marouane…[et al.]. Influence of the Nature and Rate of Alkaline Activator on the Physicochemical Properties of Fly Ash-Based Geopolymers. Advances in Civil Engineering No. 2020 (2020), pp.1-13.
https://search.emarefa.net/detail/BIM-1125113
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
EL Alouani, Marouane& Alehyen, Saliha& EL Achouri, Mohammed& Hajjaji, Abdelowahed& Ennawaoui, Chouaib& Taibi, M’hamed. Influence of the Nature and Rate of Alkaline Activator on the Physicochemical Properties of Fly Ash-Based Geopolymers. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1125113
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1125113
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر