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Effect of TiO2 Nanoparticles on Physical and Mechanical Properties of Cement at Low Temperatures
المؤلفون المشاركون
Wang, Li
Zhang, Hongliang
Gao, Yang
المصدر
Advances in Materials Science and Engineering
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-12، 12ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-09-26
دولة النشر
مصر
عدد الصفحات
12
الملخص EN
Low temperature negatively affects the engineering performance of cementitious materials and hinders the construction productivity.
Previous studies have already demonstrated that TiO2 nanoparticles can accelerate cement hydration and enhance the strength development of cementitious materials at room temperature.
However, the performance of cementitious materials containing TiO2 nanoparticles at low temperatures is still unknown.
In this study, specimens were prepared through the replacement of cement with 1 wt.%, 2 wt.%, 3 wt.%, 4 wt.%, and 5 wt.% TiO2 nanoparticles and cured under temperatures of 0°C, 5°C, 10°C, and 20°C for specific ages.
Physical and mechanical properties of the specimens were evaluated through the setting time test, compressive strength test, flexural strength test, hydration degree test, mercury intrusion porosimetry (MIP), X-ray diffraction (XRD) analysis, thermal gravimetric analysis (TGA), and scanning electron microscopy (SEM) in order to examine the performance of cementitious materials with and without TiO2 nanoparticles at various curing temperatures.
It was found that low temperature delayed the process of cement hydration while TiO2 nanoparticles had a positive effect on accelerating the cement hydration and reducing the setting time in terms of the results of the setting time test, hydration degree test, and strength test, and the specimen with the addition of 2 wt.% TiO2 nanoparticles showed the superior performance.
Refined pore structure in the MIP tests, more mass loss of CH in TGA, intense peak appearance associated with the hydration products in XRD analysis, and denser microstructure in SEM demonstrated that the specimen with 2 wt.% TiO2 nanoparticles exhibited preferable physical and mechanical properties compared with that without TiO2 nanoparticles under various curing temperatures.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Wang, Li& Zhang, Hongliang& Gao, Yang. 2018. Effect of TiO2 Nanoparticles on Physical and Mechanical Properties of Cement at Low Temperatures. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1122225
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Wang, Li…[et al.]. Effect of TiO2 Nanoparticles on Physical and Mechanical Properties of Cement at Low Temperatures. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1122225
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Wang, Li& Zhang, Hongliang& Gao, Yang. Effect of TiO2 Nanoparticles on Physical and Mechanical Properties of Cement at Low Temperatures. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1122225
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1122225
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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