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Effect of Nanosilica on Impermeability of Cement-Fly Ash System
المؤلفون المشاركون
Liu, Huaqing
Zhang, Yan
Tong, Ruiming
Zhu, Zhaoqing
Lv, Yang
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-13، 13ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-03-27
دولة النشر
مصر
عدد الصفحات
13
التخصصات الرئيسية
الملخص EN
Surface protection has been accepted as an effective way to improve the durability of concrete.
In this study, nanosilica (NS) was used to improve the impermeability of cement-fly ash system and this kind of material was expected to be applied as surface protection material (SPM) for concrete.
Binders composed of 70% cement and 30% fly ash (FA) were designed and nanosilica (NS, 0–4% of the binder) was added.
Pore structure of the paste samples was evaluated by MIP and the fractal dimension of the pore structure was also discussed.
Hydrates were investigated by XRD, SEM, and TG; the microstructure of hydrates was analyzed with SEM-EDS.
The results showed that in the C-FA-NS system, NS accelerated the whole hydration of the cement-FA system.
Cement hydration was accelerated by adding NS, and probably, the pozzolanic reaction of FA was slightly hastened because NS not only consumed calcium hydroxide by the pozzolanic reaction to induce the cement hydration but also acted as nucleation seed to induce the formation of C-S-H gel.
NS obviously refined the pore structure, increased the complexity of the pore structure, and improved the microstructure, thereby significantly improving the impermeability of the cement-FA system.
This kind of materials would be expected to be used as SPM; the interface performance between SPM and matrix, such as shrinkage and bond strength, and how to cast it onto the surface of matrix should be carefully considered.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Liu, Huaqing& Zhang, Yan& Tong, Ruiming& Zhu, Zhaoqing& Lv, Yang. 2020. Effect of Nanosilica on Impermeability of Cement-Fly Ash System. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1120770
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Liu, Huaqing…[et al.]. Effect of Nanosilica on Impermeability of Cement-Fly Ash System. Advances in Civil Engineering No. 2020 (2020), pp.1-13.
https://search.emarefa.net/detail/BIM-1120770
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Liu, Huaqing& Zhang, Yan& Tong, Ruiming& Zhu, Zhaoqing& Lv, Yang. Effect of Nanosilica on Impermeability of Cement-Fly Ash System. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1120770
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1120770
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
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