Colloidal Silica - Ron Blank & Associates, Inc.

Silicate Densifier ApplicationSodium silicates react with Calcium Hydroxide in concrete toliberate silica from the sodium ion that keeps it insuspension. Unfortunately, sodium will impede silica bonding as itcompetes with it for bonding sites. Silicates ratio of one partsodium to 3 parts silica is a limiting factor in the potential fordensification of any concrete slab.Once applied, the densifier must becontinuously agitated with a broom toassist in penetration and chemical reaction.Time for application can take up to 60minutes or more.The silica/calcium hydroxide reactioncreates a caustic gel which then must bediluted/hydrated with water to continuepenetration, and then followed by morebrooming.