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.
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机译：本文侧重于混凝土楼层覆盖应用的纳米金氨酸水泥砂浆的开发。它专注于将氧化铝（Al 2 O 3）纳米粉粉粉粉粉砂浆施加到用于使覆盖物的水泥砂浆的效果，在该覆盖层与混凝土基板上的粘附和其功能性质上。要求添加0.5％的Al 2 O 3纳米粉末对水泥砂浆的粘附性具有积极影响，用于使覆盖物覆盖到由混凝土制成的基板。使用扫描电子显微镜（SEM）进行的现有研究证实，粘合性改善的原因是用于使覆盖物的水泥砂浆添加0.5％的Al 2 O 3纳米粉末比相互作用内的参考砂浆更少多孔。这些文章介绍，通过加入0.5％的Al2O3纳米粉末，主要引起了用于覆盖的水泥砂浆的降低耐磨性和更高的耐磨性和较高的地下抗拉强度的结果。
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