Concrete will crack – that is a fact. Despite advancements in today’s construction technologies, concrete structures continue to crack in unanticipated places due to settling of the structure and ground movement. Cracks normally fall into two of four categories: Static or Dynamic, and Structural or Non-structural. A static crack does not move, while a dynamic crack does; and structural cracks place the integrity of the structure in jeopardy, while non-structural cracks can be eyesores and allow water infiltration.
If the crack is static, non-structural, and does not leak, epoxies are great to restore design strength and structural integrity. However, when concrete shrinks, expands, and leaks, the use of polyurethane injection grouts to permanently seal active water leaks is the optimum product of choice for non-structural issues.
The use of injection grout is a proven method for stopping leaks. Here are some reasons why injection grouts are the material of choice to stop leaks in concrete structures: