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گواهی نمایه سازی مقاله INVESTIGATION OF MECHANICAL AND PHYSICAL PROPERTIES OF MORTARS CONTAINING SILICA FUME AND NANO-SIO2

عنوان مقاله: INVESTIGATION OF MECHANICAL AND PHYSICAL PROPERTIES OF MORTARS CONTAINING SILICA FUME AND NANO-SIO2
شناسه (COI) مقاله: ICCD03_118
منتشر شده در سومین کنفرانس بین المللی بتن و توسعه در سال ۱۳۸۸
مشخصات نویسندگان مقاله:

A Sadrmomtazi - Assistant Professor, Dept. of Civil Engg, Faculty of Engg, University of Guilan, Rasht, Iran
A Fasihi - M.S. Student, Dept. of Civil Engg, Faculty of Engg, University of Guilan, Rasht, Iran
F Balalaei - M.S., Fanavari Park of Guilan, Rasht, Iran
A.K Haghi - Professor, Dept. of Textile Engg, Faculty of Engg, University of Guilan, Rasht, Iran

خلاصه مقاله:
It has been found that physical properties of concrete, particularly strength and permeability significantly depend on its pore structure. Ultra fine particles of nano- SiO2 fill the voids of CSH structure and provide more homogenous distribution of hydrated products. This effect of nano-SiO2 enhances the durability of cement composites as well as the strength. In this paper, influence of nano-SiO2 on different properties of cement mortar was investigated in comparison with silica fume (SF) as a well-known active pozzolan. Different amounts of nano-SiO2 (0, 1%, 3%, 5%, 7%and 9%) were incorporated into the ordinary cement mortar. Mechanical properties, shrinkage, water absorption of the specimens were determined. Results showed that the optimal content of Nano-SiO2 in plain cement mortar was around 7%. Nano-SiO2 particles were more effective in developing higher mechanical strength and lower water absorption than that of SF. Yet the mortar containing nano-SiO2 experienced higher shrinkage than that of SF mortar.

کلمات کلیدی:
cement mortar, mechanical properties, nano-SiO2, silica fume,shrinkage

صفحه اختصاصی مقاله و دریافت فایل کامل: https://www.civilica.com/Paper-ICCD03-ICCD03_118.html