People should do their own research before they make their own decision. Foundation crack injection or another kinds of crack repairs. Problem is no way to ensure the whole crack is full filled internally. Some people try to expand the crack without care about damages on the foundation wall. When hydraulic cement is used to patch cracks, it does not form a strong bond with the existing concrete. This leads to a weaker repair that will not hold up over time. Additionally, the joint between the two materials is susceptible to water infiltration and efflorescence, which can cause further damage and weakening to the repair.
Hydraulic Cement never is anything more than a surface patch. While people can see on the surface it may stop water on a temporary basis. When you use hydraulic cement, you'll notice it does nothing to stop the water. The seal will loosen over time when the concrete moves, shrinks and expands (wet,dry,cold,hot, freeze-thaw cycles). The cement may lasts about two years before it fails and allows water back into the foundation. It's prone to cracking. read more