Wall Crack Repair
A basement wall crack, obviously, is a sign of failure caused by stresses, inadequate design, improper curing, etc. One of the dangers of a structural crack is the effect that it has on the reinforcing bar. The reinforcing represents one of the main structural values of the concrete.
Cracks left unprepared allow moisture, road salts and other contaminants to penetrate and attack the rebar. The rebar deteriorates, losing the structural value. Loosing the entire structure is often the result.
There are several varying solutions for repairing leaking cracks - epoxy injections, hydraulic sealants, crystallization and drain tubing.
Some of these are designed to restore the structural quality of the original concrete, making it, in most cases, as good as new. It creates an impervious seal to air, water, chemicals, debris and other contaminates. Some systems actually carry the water from the crack to a drainage system, depending on the other waterproofing work that may be done.