Repairing Wall Cracks
A basement wall crack in a poured basement foundation is generally caused by concrete shrinkage. Soil movement as it contracts and swells will continue to put pressure on the wall which will cause cracks to open further and develop new ones.
A 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.
Epoxy injection restores the structural qualities the concrete design intended. In other words under most conditions it makes the concrete as good as new. It creates an impervious seal to air, water, chemicals, debris, and other contamination.
Epoxy injection resin has two purposes. First, it effectively seals the crack to prevent the damaging moisture entry. Secondly, it welds the structure together. Second, the sealing properties of the injection prevents premature deterioration of the reinforcing.