PCA-DSF is a high performance, densified silica fume powder mineral admixture used to produce high performance concretes with special performance properties including increased strength, reduced permeability, improved abrasion resistance and increased corrosion resistance.
PCA-DSF is an extremely fine, highly reactive pozzolan which improves concrete performance by two mechanisms. First, the ultra-fine silica fume particles fill voids between the cement particles, physically reducing the concrete's permeability.
As a highly reactive pozzolan, PCA-DSF chemically reacts with the calcium hydroxide present in the cement paste, forming the stronger calcium silica hydrate "glue". This results in improved paste to aggregate bond and higher concrete strengths.