Construction Additives
Nano Silica · Colloidal Silica / AQUASILICA

SURFACE DENSIFIERS

Improves hardness and surface density on treated concrete surfaces. A colloidal silica densifier, also available as AQUASILICA, applied topically to harden and tighten repaired or aged concrete.

Nano Silica
AppearanceClear liquid
SiO2 content20 – 30%
Particle size10 – 20 nm
Coverage rate200 – 300 ft²/gal
01

How surface densification works

STEP 1 — PENETRATION

Enters the surface pore network

Nano-scale colloidal silica particles penetrate into the capillary pore network of the treated concrete surface.

STEP 2 — REACTION

Reacts with free lime

Silica reacts with residual calcium hydroxide in the surface layer, forming additional calcium silicate hydrate.

STEP 3 — DENSIFICATION

Harder, denser surface

New reaction products fill capillary pores, raising surface hardness and density for improved wear resistance and reduced dusting.

02

Technical Specifications

Property
Typical value
Product
Colloidal Silica / AQUASILICA
Function
Surface densifier / hardener
Appearance
Clear to slightly hazy liquid
SiO₂ content
20 – 30%
Particle size
10 – 20 nm
pH (25°C)
9.0 – 10.5
Coverage rate
200 – 300 ft² per gallon, surface-dependent
Application method
Low-pressure spray, squeegee, or auto-scrubber
Shelf life
12 months, unopened, protect from freezing
Packaging
5 gal pail · 55 gal drum · bulk tote
03

Application Systems

REPAIRED SURFACES

Post-repair surface hardening

Densifies and hardens patched or resurfaced concrete areas.

POLISHED CONCRETE

Polished & restored floors

Prepares aged or repaired floors for polishing and finishing.

DUST CONTROL

Dust-proofing treatments

Reduces surface dusting on restored concrete slabs.

RESTORATION

General surface restoration

Improves durability and appearance of restored concrete surfaces.

04

Handling & Storage

Handling & Storage

Storage temperature 5°C – 30°C
Storage condition Sealed, protect from freezing
Application Apply to clean, sound concrete surface
Freeze/thaw stability Not freeze-thaw stable

Safety & Documentation

Compatibility Most cured concrete surfaces
Personal protection See safety data sheet
Transport classification Non-hazardous, see SDS
Documentation TDS & SDS available on request
Request a sample or the full technical data sheet

Our team can advise on the right grade for your stone type and exposure.

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