Ultrafine Ground Granulated Blast Furnace Slag (GGBS) typically exhibits enhanced pozzolanic properties compared to coarser particles due to its smaller particle size and increased surface area. These properties contribute to its ability to react with calcium hydroxide in the presence of water, forming additional cementitious compounds that improve the strength, durability, and other performance characteristics of concrete.

The increased surface area of ultrafine GGBS allows for more efficient pozzolanic reactions, leading to better cementitious properties and a denser microstructure in concrete. This enhanced reactivity makes ultrafine GGBS particularly beneficial in applications where high strength, low permeability, and long-term durability are desired, such as in high-performance concrete mixes and construction projects exposed to harsh environments.

However, it’s important to note that the exact pozzolanic properties of ultrafine GGBS can vary depending on factors such as the specific composition of the slag, the grinding process used to produce the ultrafine particles, and the conditions under which it is incorporated into concrete mixes.