srjecsSRJECSSRJECS2788-940810.47310/srjebm.2024.v04.i02.008Improve Concrete Properties with Nano SilicaAzharG. HamadUniversity of Thi-Qar, Civil Engineering Department, Thi-Qar, Iraq.This research focuses on the one known application of enhancing concrete properties through the incorporation of nano silica (NS), an important construction material. The study also emphasises the role of nano silica in improving the microstructure of concrete and, hence, its strength, durability, and sustainability. This reviews the performance of nano silica when mixed with concretes, addressing to the fact that it has a very large surface area to which it contributes to the performance. The measures section describes several experimental methods used to assess the effects of various parameters influencing concrete, for instance mass and surface area of nano silica. The conclusions further explain that incorporation of nano silica enhances the mechanical properties of the fly ash geopolymer by increasing the compressive strength and protection from environmental changes. In addition, the study explains the challenges faced while incorporating nano silica into the common concrete production systems. Lastly, such research poses a foundation of advancing mechanical metamaterials for constructing better cementitious systems by implementing nanotechnology with a focus on the role of nano silica in future construction.