Published Sunday 24th of November 2013 // Updated Friday 24th of February 2017
While concrete is a notably hard and durable material, you can take steps to improve the material and extend its lifespan. One of the most common methods of doing this is by using concrete densifiers. Densifiers tend to consist of a silicate which will chemically react with the calcium hydroxide that makes up concrete, filling the empty spaces with a chemical compound (C-S-H, or calcium-silicate-hydrates) that serves to densify the material and alleviate the problematic dusting phenomenon. This process is remarkably similar to how concrete is produced in the first place; thus, it is a good precautionary measure to take to improve the life of your concrete.
A good concrete densifier will penetrate the surface of the concrete increasing the strength and hardness by up to 50%. It is best to use a lithium silicate densifier like the Lithi-Tek 4500 since the lithium densifiers have a smaller particle size it allows them to penetrate deeper into the concrete. If you are going to be polishing the concrete you would first apply a densifier. If you are looking for waterproofing protection it is best to first apply the Lithi-Tek 4500 wait seven days and apply a topcoat such as the Siloxa-Tek 8500 or the Lithi-Tek 9500.