A sodium densifier is a type of concrete densifier made primarily from sodium silicate. It is used to strengthen and harden concrete surfaces by chemically reacting with the free lime (calcium hydroxide) in the concrete.

When applied to concrete, the sodium silicate in the densifier penetrates the surface and reacts with calcium hydroxide (Ca(OH)₂) present in the concrete. This reaction produces calcium silicate hydrate (C-S-H), a gel-like substance that:
Fills in pores and micro-cracks 
Increases surface density and hardness 
Improves abrasion and wear resistance 
Reduces dusting and water permeability 
Extends the life of the floor

 
Common Applications:
Warehouses
Manufacturing plants
Parking garages
Retail stores
Logistics centers
 
 
 
There are several types of concrete hardeners, including:
 
Chemical Hardeners: These are liquid or powder substances that are added to concrete mixtures to increase their hardness and surface density. Some common examples of chemical hardeners include silicates, sodium silicates, and lithium silicates.
 
Metallic Hardeners: These are particles of metal, such as iron or steel, that are added to concrete mixtures to increase their hardness and strength. Metallic hardeners are often used in industrial flooring applications, where high levels of abrasion resistance are required.
 
Cementitious Hardeners: These are substances that are added to concrete mixtures to increase the concrete's strength and durability. They are often used in applications where the concrete will be exposed to heavy loads or severe weather conditions.
 
Surface Hardeners: These are materials that are applied to the surface of concrete to increase its hardness and abrasion resistance. They can be in the form of liquids or powders, and they are often used in industrial flooring applications.
 
Micro-silica Hardener: This type of hardener is made from micro-silica, a by-product of the production of silicon metal. It is added to concrete mixtures to improve the concrete's compressive strength, abrasion resistance, and durability.
 
The type of concrete hardener used in a specific application depends on the desired outcome, the conditions the concrete will be exposed to, and the available resources and materials.

Summary
Sodium densifiers are a cost-effective choice for improving the performance of concrete floors. While they may not penetrate as deeply as lithium-based densifiers, they are still widely used in industrial and commercial environments for dust-proofing, surface hardening, and extending floor durability.


Note: It is important to follow the manufacturer's instructions and safety precautions when using concrete hardener or densifier, as some products can be harmful if not handled properly.

Technical Specifications