Microblock® is a slurrified/liquid multifunctional product composed of amorphous, spherical microsilica with high surface area and specially processed and with quality controlled Particle Size Distribution (PSD). 

The specific characteristics of Microblock®, its small particle size averaging 0.15 μm, pozzolanic reactivity and surface area more than 20 m²/g, make the product an effective gas migration control additive.