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Open AccessArticle

Effect of Nanosilica on Mechanical Properties and Microstructure of PVA Fiber-Reinforced Geopolymer Composite (PVA-FRGC)

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Department of Physics, University College in AlJumum, Umm Al-Qura University, P.O. Box 715, Makkah 21955, Saudi Arabia
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Department of Physics, Faculty of Applied Science, Umm Al-Qura University, P.O. Box 715, Makkah 21955, Saudi Arabia
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Department of Civil Engineering, Pabna University of Science & Technology, Pabna 6600, Bangladesh
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Department of Civil Engineering, Curtin University, GPO Box U1987, Perth 6845, Australia
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Department of Physics, Faculty of Mathematics and Natural Sciences, State University of Makassar, Jl. Daeng Tata Raya, Makassar 90224, Indonesia
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Department of Physics and Astronomy, Curtin University, GPO Box U1987, Perth 6845, Australia
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Author to whom correspondence should be addressed.
Materials 2019, 12(21), 3624; https://doi.org/10.3390/ma12213624
Received: 22 October 2019 / Accepted: 1 November 2019 / Published: 4 November 2019
This paper presents the effects of various nanosilica (NS) contents on the mechanical properties of polyvinyl alcohol (PVA) fiber-reinforced geopolymer composites (PVA-FRGC). Microstructure analysis with X-ray diffraction (XRD) and scanning electron microscopy (SEM) was used to characterize the geopolymer composites. The results showed that the mechanical properties in terms of compressive strength, impact strength, and flexural behavior were improved due to the addition of NS to the PVA-FRGC. The optimum NS content was 1.0 to 2.0 wt%, which exhibited highest improvement in the above mechanical properties. Microstructure analysis showed that the addition of NS up to an optimum level densified the microstructure of the matrix as well as the PVA fiber–geopolymer matrix interface. View Full-Text
Keywords: geopolymer; nanosilica; PVA fibers; mechanical properties geopolymer; nanosilica; PVA fibers; mechanical properties
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MDPI and ACS Style

Assaedi, H.; Alomayri, T.; Siddika, A.; Shaikh, F.; Alamri, H.; Subaer, S.; Low, I.-M. Effect of Nanosilica on Mechanical Properties and Microstructure of PVA Fiber-Reinforced Geopolymer Composite (PVA-FRGC). Materials 2019, 12, 3624.

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