- Heavy Vehicles
- Forklift trucks with hard tyres
- Hard forklift traffic
- Hard synthetic wheels, small and large
- No Rinsing Required
- Provides Increased Abrasion Resistance
- Easy to Maintain
- Self Polishing
All densifiers work in the same way in terms of the chemical reaction that occurs and the final composition of the surface. You will notice that all densifiers are a type of silicate compound. This is because the silicate is what actually changes the surface characteristics of the concrete, the sodium, lithium, and potassium just acts as a transport agent for the silicate. The densifier reacts with the free calcium carbonate in the concrete to create a crystalline structure in the surface pores of the concrete referred to as calcium silicate. The calcium silicate structure in the pores of the concrete is what increases the strength of the surface. The byproduct of this reaction, depending on which type of densifier you use, is sodium carbonate, lithium carbonate, or potassium carbonate, none of which have any impact on the surface characteristics of the concrete.
With sodium silicates you apply them by flooding the surface with the densifier at a rate of approx. 200 sq. ft./gallon and agitating the product with a broom or low speed scrubbing machine. You then wait, allowing the densifier to completely react with the surface of the concrete, and then thoroughly rinse the surface to get the excess product off. Rinsing is important because leaving the excess sodium carbonate on the surface can lead to ASR (Alkali Silicate Reaction) which can have a negative impact on the concrete. If applied and rinsed properly this is not a concern.
Lithium and potassium silicates are applied in a different fashion. They are sprayed on the surface at a rate of approx. 500 sq. ft./gallon using a low pressure sprayer and are left on the surface with no rinsing required. These products are generally quite a bit more expensive on a per gallon basis, but when applied at the rates suggested by manufacturers they tend to be comparable in price with the sodium silicates on a price per square foot basis.
DENSFIER INFORMATION AND CODES
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