Sustainable Infrastructures (Materials and Management)—High-Strength Nanoconcrete with the Replacement of Nanoflyash

Using nanolevel adjustments in the development of advanced materials is the new trend now, and this nanotechnology can help in enhancing the properties of construction materials. The nanomodification of materials has wide areas of applications in changing and improvising the strength and durability of concrete. An effort was taken to explore the new areas of concrete using nanoflyash. Class-F flyash was crushed to nanoform in the high-energy planetary ball mill to produce nanoflyash. A high-strength concrete of M70 grade was prepared with normally available materials (NCC), and then the cement was replaced with 10, 15 and 20% of bulk flyash to produce flyash high-strength concrete (FAC). Then 2, 4, 6 and 8% of nanoflyash was applied to the FAC to get even stronger concrete or to compensate the strength loss due to addition of flyash to this high-strength concrete. The compressive strength and workability of this nanoconcrete were figured out and there was increase in strength in the range of 10 to 24% for various percentages of addition of nanoflyash to flyash high-strength concrete (FAC) after the comparison with NCC and FACs.