Nanosilica is an inorganic nanomaterial with a high silica content (99%). It is synthesized using one of three methods: the precipitation process (where silica reacts in a solvent and undergoes purification and dispersion), the hydrothermal/solvothermal process (involving precipitation under high pressure and temperature), or thermal reduction (where silica is subjected to temperatures between 1700°C and 2300°C). The enhanced performance of nanosilica is due to its pozzolanic reactivity, a chemical reaction that fills pores and improves material properties.