The effect of adding nano-silica on the ultrasonic pulse velocity of geopolymer concrete
Publish place: Journal of Particle Science & Technology، Vol: 7، Issue: 2
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JPST-7-2_004
تاریخ نمایه سازی: 5 شهریور 1401
Abstract:
Nanotechnology plays an important role in the current construction industry. It has been observed that several properties of cement-based concrete are affected by different nano materials. In this study, different weight percentages of nano-silica (۰, ۱, ۲, and ۴ wt%) were used to build geopolymer specimens. The mechanical properties of the specimens were then measured, including the compressive and flexural strength. Results demonstrated that increasing the percentage of nano-silica from ۰ to ۴ wt% increases the compressive strength of the specimens from ۵۰.۴ to ۷۵.۲ MPa and the flexural strength from ۱۱.۴ to ۲۶.۲ MPa. Furthermore, it was observed that the ultrasonic pulse velocity was altered by increasing SiO۲ (nano-silica), decreasing the ultrasonic pulse rate from ۷.۰ to ۴.۵ km.s-۱.
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Authors
Behzad Mehdikhani
Standard Research Institute, Technical and Engineering Faculty, Construction and Mineral Department, Karaj, Iran
Behzad Saeedi Razavi
Standard Research Institute, Technical and Engineering Faculty, Construction and Mineral Department, Karaj, Iran
Jamal Ahmadi
Department of Civil, Faculty of Engineering, University of Zanjan, Zanjan, Iran
Ali Goharrokhi
Applied Science Center of Khorasan Razavi Municipalities, Mashhad, Iran
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