Perneability plays a critical role in influencing the service - life of a concrete structure. It controls the rate of flow of water and contaminants into - out of and through the concrete.

Self-healing concrete has been a changing factor in both the construction and the concrete industry for many years now.

Self-healing is recognized as concrete containing something native in the concrete composite that was mixed into the concrete before the crack occurred. This additive activates its own set of mechanics or kinetics to form bridges over the cracks that form within the concrete surface and throughout the body of the composite. The material that bridges over the cracks does not necessarily have to have a strength equal to or greater than the parent concrete material. That being s

Hydrogels are water-insoluble (incapable of being dissolved) three dimensional network of polymer chains capable of holding large amounts of water.