Compressive strength of Portland cement pastes and mortars containing Cu-Zn nano-ferrite
محل انتشار: مجله بین المللی ابعاد نانو، دوره: 3، شماره: 2
سال انتشار: 1391
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 87
فایل این مقاله در 10 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_IJND-3-2_001
تاریخ نمایه سازی: 24 تیر 1401
چکیده مقاله:
This study is concerned with the synthesizing of Cu-Zn nano-ferrite particles in the laboratory applying simple techniques. The morphology of the synthesized nano-particles was analyzed using Transmission Electron Microscopy (TEM), and the minerals were identified using X-ray diffraction (XRD). The nano material was used to replace ۱- ۴ percent by weight of Portland cement in cement pastes and mortars. The microstructure and compressive strength of the composites were then evaluated. The microstructure was characterized by means of Scanning Electron Microscope (SEM) analysis and the compressive strength was evaluated at ۷ and ۲۸ days. While some specimens were tested at normal temperature, other specimens were tested after ۲-hour exposure at elevated temperatures of ۲۰۰oC and ۴۰۰oC. The results showed that it was possible to synthesize nano-particles having an average size of ۱۲ nanometers. Also, the test results revealed that the optimum content of the nano-ferrite was ۱% to produce the maximum increase in the compressive strength. Adding the optimum dose of nano-particles helped to produce a denser microstructure. The paste and mortar specimens showed general tendency to lose strength after exposure to the elevated temperatures.
کلیدواژه ها:
نویسندگان
M. Kamal
Civil Eng. Dept., Faculty of Engineering, Menoufia University, Shebeen El-koom, Menoufia, Egypt.
M. A. Safan
Civil Eng. Dept., Faculty of Engineering, Menoufia University, Shebeen El-koom, Menoufia, Egypt.
M. Eltabey
Basic Eng. Science Department, Faculty of Engineering, Menoufia University, Egypt.
El. S. Zaki
Building Materials Department, Housing & Building Research Center, Cairo, Egypt.
Kh. Abu El-hassan
Ph.D. Candidate, Civil Eng. Dept., Faculty of Engineering, Delta University, Mansura, Egypt.