Performance of composite cement containing Nano -ZnO subjected to elevated temperature | ||
| Benha Journal of Applied Sciences | ||
| Article 10, Volume 7, Issue 12, December 2022, Pages 115-130 PDF (925.11 K) | ||
| Document Type: Original Research Papers | ||
| DOI: 10.21608/bjas.2022.317154 | ||
| Authors | ||
| Mohamed Heikal1; M.Y. Nassar1; S. Abd El-ALeem2; A.M. El-Sharkawy1; El-Hassan Desoki1; Sahar M.Ibrahim1 | ||
| 1Chemistry, Dept., Faculty of Science, Benha Univ., Benha, Egypt | ||
| 2Chemistry, Dept., Faculty of Science, Fayoum Univ., Fayoum, Egypt | ||
| Abstract | ||
| The purpose of this article is studying the effect of physico-mechanical and fire-resistance of cement composite that contain ZnO-nanoparticles NZnO. ZnO-nanoparticles are prepared by combustion method. The composite cements are prepared with different amounts of NZnO 0.0, 0.1, 0.2, 0.4, 0.6 mass %. From one day to 90 days, the hydration kinetics’ behavior was studied. After the specimens were subjected to thermal treatment at 200, 400, 600, 800 and 1000 oC, with a rate of heat 5oC per minute for two hours, the composite cement pastes’ thermal resistance was investigated. With a NZnO content of up to 0.6 mass percent, the compressive strength of OPC–NZnO cement pastes increased. The compressive strength of the thermally treated mixes with 0.6 % N-ZnO (NZTU4) is higher than that of the other mixes up to 1000 oC. It can be concluded that OPC–N ZnO pastes that contain 0.6 mass% NZnO have an optimal mix composition that has a better firing resistance than those of other pastes. | ||
| Keywords | ||
| Zinc oxide nanoparticles; cement; composite; transmission electron microscope Scanning electron microscope; x-ray diffraction | ||
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