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Performant cement based materials reinforced with nano-SiO2

13th International Conference on Advanced Materials and Nanotechnology


Mihaela-Andreea Moncea, Florina-Diana Dumitru, Marius Viorel Olteanu, Madalina Boboc and Gyorgy Deak

National Institute for Research and Development in Environmental Protection, Romania

Posters & Accepted Abstracts: Res. Rev. J Mat. Sci

DOI: 10.4172/2321-6212-C1-009


The paper presents the investigation of the effect of SiO2 nanoparticles on the mechanical properties and microstructure of cement based materials. For this purpose nano-SiO2 powders were obtained by sol-gel method using different molar ratios of TEOS/ethanol/water. The formation of nano-SiO2 particles was confirmed by X-ray fluorescence analyses (XRF) and the nanometric sizes by scanning electron microscopy (SEM). The cement based materials admixture were obtained by using 0.45 and 0.5 water/binder ratio (w/b) and for each ratio the cement was substituted with 0.5 of 0.7% of nano-SiO2. The distribution of nano-SiO2 particles within the cement matrix plays an essential role and governs the performance of these products. Therefore, the addition of 0.4% super-plasticizer for the w/b=0.45 was proposed to facilitate the distribution of nano-SiO2 particles. The mechanical test results showed that after 7 days of hydration the cement based materials with 0.7% nano-SiO2 content improved the compressive strengths compared with those of the etalon (E=45MPa Vs. AM1=55MPa). The microstructure of cement based admixtures highlighted the presence of Ca(OH)2, ettringite and calcium silicate hydrates as well as nano-SiO2 particles embedded into the cement matrix.


Mihaela-Andreea Moncea has completed her PhD from Politehnica University of Bucharest. She is a Senior Researcher at the National Institute for research and development in environmental protection, within the impact of built environment and Nano-materials Department. She has published more than 30 papers and is serving as Reviewer of specialized ISI journal in the materials science field. helps to translate Spanish to English and English to Spanish for free. kullanarak 100'den fazla dil ciftinde hemen ceviriler yapabilirsiniz.ingilizce turkce ceviri helps to translate English to Spanish to English for free. ingilizce turkce ceviri, turkce ingilizce ceviri, ingilizce turkce cumle ceviri, ingililizceyi turkceye ceviri ve turkceyi ingilizceye ceviri gibi tum dillerde dogru ceviri hizmetleri sunuyor. kullanarak 100'den fazla dil ciftinde hemen ceviriler yapabilirsiniz.ingilizce turkce ceviri