Ultra high performance concrete (UHPC) and high-performance concrete (HPC) with the addition of silica fume have been identified as more important advanced materials for improving national infrastructure. In ultra-high performance concrete (UHPC), silica fume is an important admixture, and its main functions are as follows:

1. Enhance the strength and durability of concrete: After mixing silica fume with raw materials such as cement and quartz powder, it can form a unique

Special hydration products can enhance the strength and durability of concrete, improve its compressive, flexural, and anti-seepage properties.

2. Optimize the microstructure of concrete: Silica fume can fill the tiny voids and holes in concrete, optimizing the microstructure of concrete

Observe the structure to make it denser, improve its durability and crack resistance.

3. Improve the fluidity of concrete: Silica fume has a large specific surface area and activity, which can increase the viscosity and flow of concrete

Mobility makes concrete easier to construct and form.

4. Reduce the shrinkage rate of concrete: Silica fume can form a stable hydration product together with raw materials such as cement and quartz powder

Material can reduce the shrinkage rate of concrete and decrease the occurrence rate of concrete cracks.

In summary, the application of silica fume in UHPC can significantly improve the performance and durability of concrete, making UHPC more efficient

Features such as strength, better crack resistance, better durability, and better fluidity.