Microstructural Analysis of Silica Fume Concrete with Scanning Electron Microscopy and X-Ray Diffraction
The effects of using different ratios of silica fume on the mechanical and microstructural properties of hardened cement paste and concrete were investigated in this study. Portland cement was replaced with 5%, 10%, 15%, and 20% silica fume (SF) by weight. Microstructural properties of obtained samples were investigated by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The XRD analysis showed that the ratio of calcium hydroxide (CH), which is produced by hydration, decreases depending on the concrete age and the amount of silica fume. The SEM analysis showed that the use of silica fume decreases gaps and calcium silicate hydrate (C-S-H) which is also a hydration production. Silica fume content of up to 15% improved the observed mechanical and microstructural properties of concrete. At the optimum value of 15%, improvement in the paste was observed due to the filler effect and the reaction between the silica fume and calcium hydroxide, leading to a reduction in calcium hydroxide in the concrete.
A. C. Aydın, R. Gul, “Influence of volcanic originated natural materials as additives on the setting time and some mechanical properties of concrete”, Construction and Building Materials, Vol. 21, No. 6, pp. 1277-1281, 2007
A. A. Adekunle, K. R. Abimbola, A. O. Familusi, “Utilization of construction waste tiles as a replacement for fine aggregates in concrete”, Engineering, Technology and Applied Science Research, Vol. 7, No. 5, pp. 1930-1933, 2017
F. A. Olutoge, H. A. Quadri, O. S. Olafusi, “Investigation of the strength properties of palm kernel shell ash concrete”, Engineering, Technology and Applied Science Research, Vol. 2, No. 6, pp. 315-319, 2012
A. G. Khan, B. Khan, “Effect of partial replacement of cement by mixture of glass powder and silica fume upon concrete strength”, International Journal of Engineering Works, Vol. 4, No.7, pp. 124-135, 2017
A. Yeginobali, “Silica fume and cement and its use in concrete”, Turkish Cement Manufacturers’ Association, 2009 (in Turkish)
T. Nochaiya, W. Wongkeo, A. Chaipanich, “Utilization of fly ash with silica fume and properties of portland cement–fly ash-silica fume concrete”, Fuel, Vol. 89, No. 3, pp. 768-774, 2010
A. C. A. Muller, K. L. Scrinever, J. Skibsted, A. M. Gajewicz, P. J. McDonald, “Influence of silica fume on the microstructure of cement paste: New insights from H NMR relaxometry”, Cement and Concrete Research, Vol. 74, pp. 116-125, 2015
M. Kurt, M. S. Gul, R. Gul, A. C. Aydın, T. Kotan, “The effect of pumice powder self-compactability of pumice aggregate lightweight concrete”, Construction and Building Materials, Vol. 103, pp. 36-46, 2016
N. Ranjbar, M. Mehrali, A. Behnia, U. J. Alengaram, M. Z. Jumaat, “Compressive strength and microstructural analysis of ﬂy ash/palm oil fuel ash based geopolymer mortar”, Materials and Design, Vol. 59, pp. 532-539, 2014
I. Demir, “Aynı oranda ikame edilen silis dumani ve ucucu kulun betonun mekanik ozelliklerine etkisi”, International Journal of Engineering Research and Development, Vol. 1, No. 2, pp. 1-7, 2009
K. Baltakys, R. Jauberthie, R. Siaucinas, R. Kaminskas, “Influence of modification of SiO2 and the formation of calcium silicate hydrate”, Materials Science-Poland, Vol. 25, No. 3, pp. 663-670, 2007
I. B. Topcu, M. Canbaz, “An investigation of the interfaces of silica fume concrete”, ECAS2002 International Symposium on Structural and Earthquake Engineering, Ankara, Turkey, October 14, 2002
P. E. Stutzman, “Scanning electron microscopy in concrete petrography”, Calcium Hydroxide in Concrete (Workshop on the Role of Calcium Hydroxide in Concrete), Anna Maria Island, Florida, USA, November 1-3, 2000
J. Elena, M. D. Lucia, “Application of x-ray diffraction (XRD) and scanning electron microscopy (SEM) methods to the Portland cement hydration processes”, Journal of Applied Engineering Sciences, Vol. 2, No. 15, pp. 35-42, 2012
E. Temiz, A. Y. Karakeci, “An investigating on microstructure of cement paste containing fly ash and silica fume”, Cement and Concrete Research, Vol. 32, No. 7, pp. 1131-1132, 2002
I. B, Topcu, M. Canbaz, “An investigation of the interfaces of silica fume concrete”, International Symposium on Structural and Earthquake Engineering, Ankara, Turkiye, 2002
M. Saad, S. A. A. E. Enein, G. B. Hanna, M. F. Kotkata, “Effect of silica fume on the phase composition and microstructure of thermally treated concrete”, Cement and Concrete Research, Vol. 26, No. 10, pp. 1479-1484, 1996
A. C. Aydin, M. B. Karakoc, O. A. Duzgun, M. S. Bayraktutan, “Effect of low quality aggregates on the mechanical properties of lightweight concrete”, Scientific Research and Essays, Vol. 5, No. 10, pp. 1133-1140, 2010
B. Uzbas, A. C. Aydin, “Ucucu kul ve silis duman katkılı betonların mekanik ozelliklerinin XRD ile incelenmesi”, Sinop University Journal of Natural Science, Vol. 3, No. 2, pp. 1-22, 2018 (in Turkish)
A. K. Nanda, P. P. Bansal, M. Kumar, “Effect of nano silica and silica fume on durability properties of high performance concrete”, International Journal of Civil Engineering and Technology, Vol. 9, No. 2, pp. 115-129, 2018
B. Uzbas, A. C. Aydin, “Analysis of fly ash concrete with scanning electron microscopy and x-ray diffraction”, Advances in Science and Technology Research Journal, Vol. 13, No. 4, pp. 100–110, 2019
MetricsAbstract Views: 119
PDF Downloads: 52
Copyright (c) 2020 Authors
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain the copyright and grant the journal the right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) after its publication in ETASR with an acknowledgement of its initial publication in this journal.