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Open AccessFeature PaperArticle

The Development of Nanoalumina-Based Cement Mortars for Overlay Applications in Concrete Floors

Faculty of Civil Engineering, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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Materials 2019, 12(21), 3465; https://doi.org/10.3390/ma12213465
Received: 14 September 2019 / Revised: 16 October 2019 / Accepted: 18 October 2019 / Published: 23 October 2019
This article focuses on the development of nanoalumina-based cement mortars for overlay applications in concrete floors. It focuses on the effect of applying aluminum oxide (Al2O3) nanopowder to the cement mortar used to make the overlay, on the adhesion of this overlay to concrete substrate and on its functional properties. It was claimed that the addition of 0.5% of Al2O3 nanopowder has a positive effect on the adhesion of the cement mortar used to make the overlay to the substrate made of concrete. The prior studies performed using scanning electron microscopy (SEM) confirmed that the reason for the improvement in adhesion is the fact that cement mortar used to make the overlay with the addition of 0.5% of Al2O3 nanopowder is less porous than the reference mortar within the interphase. The article concurs that the most favorable results, in terms of lower abrasion resistance and higher subsurface tensile strength of the cement mortar used to make the overlay, are mainly brought about by adding 0.5% of Al2O3 nanopowder. View Full-Text
Keywords: aluminum oxide nanopowder; cement mortar overlay; substrate; concrete floors; adhesion; functional properties aluminum oxide nanopowder; cement mortar overlay; substrate; concrete floors; adhesion; functional properties
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Szymanowski, J.; Sadowski, Ł. The Development of Nanoalumina-Based Cement Mortars for Overlay Applications in Concrete Floors. Materials 2019, 12, 3465.

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