Concrete starts decaying immediately after it cures. Even brand new construction can require leak seal follow up work. Older concrete structures are even more susceptible. Leaks through concrete are generally going to be through cracks, joints, and honeycomb (areas in poured concrete of mainly course aggregate with voids in between). Depending on water volume and pressure, and the size of the joint or crack, you are going to encounter weeping leaks, steady leaks, and gushing leaks. These leaks can be sealed with crack injection resin.
Curtain wall grouting is often required when cracks cannot be identified, when the walls are made of material that does not respond well to crack injection (such as masonry, stone and CMU), and when previous leak seal methods have failed. Curtain wall grouting is the process of injecting water reactive resin behind the leaking wall in a grid pattern. The water on the other side mixes with the grout and cures to a solid mass covering
the surface of the wall on the other side.
Newly constructed floor/wall joints with no waterstop lining can be vulnerable to water infiltration. When designers and builders neglect to line the joints, water can seep into the structure and out onto the floor. Needless to say, water on the floor can be an inconvenience, it can be a safety hazard, and it can damage property. In addition, floor/wall joint leaks can cause the concrete to decay and spall over the long run. Alchemy-Spetec offers a variety of waterstop solutions.