Sodium Silicate for Concrete & Construction
Concrete densifier and construction-chemical formulators use liquid sodium silicate (water glass) to react with free lime in cured concrete, forming calcium silicate hydrate that hardens and seals the surface. Ratio and concentration decide penetration depth, reaction speed, and finish.
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Short answer
Concrete densifier and construction-chemical formulators use liquid sodium silicate (water glass, CAS 1344-09-8), which reacts with free lime in cured concrete to form calcium silicate hydrate that hardens and seals the surface. Ratio and concentration decide penetration depth, reaction speed and finish, so a quotation needs your target ratio and concentration rather than the words 'sodium silicate'. Zhongzhi Chemical supplies liquid grades across a 2.0–3.5 modulus range from China in drums, IBCs or bulk tanker.
How Sodium Metasilicate Is Used
- Concrete floor densifiers and surface hardeners (CSH formation)
- Waterproofing and pore-blocking sealers for slabs and basements
- Soil stabilization and grouting for ground engineering
- Workability and set aids in specialty cementitious blends
Benefits for This Industry
- Selectable SiO₂:Na₂O weight ratio to balance penetration against reaction speed
- Liquid grade supplied by baumé / % solids for blend consistency
- IBC, drum, and bulk flexitank options for construction-chemical plants
- COA, MSDS, and TDS per shipment for formulator qualification
How Our Sodium Metasilicate Supports This Application
| Formulation need | Product feature | Value to your line |
|---|---|---|
| Balance penetration against reaction speed | Selectable SiO₂:Na₂O modulus (2.0–3.5) | Tune densifier penetration depth versus cure speed |
| Harden and seal cured concrete | Liquid water-glass reactivity with free lime | Forms calcium silicate hydrate that hardens the surface |
| Consistent blends and dosing | Liquid supplied by baumé / % solids | Repeatable dilution and dosing on the line |
| Construction-chemical plant logistics | Drum, IBC and bulk flexitank options | Packing matched to plant handling and volume |
| Formulator qualification | COA, MSDS and TDS per shipment | Documentation for finished-product qualification |
What We Need to Confirm Before Recommending a Grade
Grade selection for this application depends on your process, not on a catalogue number. Send these conditions with your enquiry and the recommendation comes back with the reasoning attached.
- Target ratio
- The SiO₂:Na₂O weight ratio drives penetration depth and cure speed; lower ratios react faster but penetrate less.
- Concentration
- Baumé or % solids required for your dilution and dosing equipment.
- Application
- Densifier, sealer, soil grout, or cement admixture — each favours a different ratio band.
What this page does not claim
Performance in your formulation is established by your own trial, not by a supplier page. These are the limits we hold to.
- We supply the silicate raw material to specification; we do not formulate or warrant finished densifier products.
- Coverage rates and cure results depend on concrete porosity and site conditions, which we do not certify.
Liquid sodium silicate is the working grade for concrete densifiers and construction chemicals. Share your target ratio and concentration for a matched quotation.
Confirm grade, monthly quantity, packing, destination port and buyer type on the RFQ form.
Ready to RFQ
A quotation needs grade and monthly quantity (MT), plus packing, destination port and buyer type. The form will not submit without these. Approved TDS, SDS and stamped COA samples are on Downloads; a shipment COA is issued per order. No prices are shown on the form.
- Grade
- Monthly quantity (MT)
- Packing
- Destination port
- Documents needed