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Concrete hardener and concrete densifier are chemical treatments that are applied to concrete surfaces to improve their hardness, durability, and resistance to wear and staining.

Concrete hardener is a penetrating solution that reacts with the calcium hydroxide in concrete to form calcium silicate hydrate (CSH), which is a harder and denser material. This reaction helps to increase the hardness and abrasion resistance of the concrete surface.

 

 

There are several types of concrete hardeners, including:
 

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.

Concrete densifier is a liquid solution that penetrates into the concrete surface and reacts with the free calcium ions to form calcium silicate hydrate (CSH) crystals. This reaction helps to increase the density of the concrete and reduce its porosity, making it more resistant to staining and easier to clean. This process produces a substantially denser concrete surface with enhanced durability. In addition to the densifying and hardening action, concrete densifier also solidifies the concrete, eliminating dusting and pitting.

To apply concrete hardener or densifier:

  1. Clean and dry the surface of the concrete.Prepare the hardener or densifier solution according to the manufacturer's instructions.
  2. Apply the solution evenly to the surface of the concrete using a sprayer or roller.
  3. Allow the solution to penetrate into the surface for the recommended time.
  4. Rinse the surface with water to remove any excess solution.


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

 

Concrete Hardener-HTG