Infrastructure Repairs Using Epoxy
Epoxy Concrete Injection Epoxy Wood Injection, epoxy crack repair
Epoxy Structural Concrete and Wood Repair / Waterproofing
The following article is written with enough information about resin injection systems to help protect the Owner from the misuse or improper installation of an injection systems. For more information contact me: Norm Lambert.
Part 1: Introduction to Epoxy Injection
Epoxy Concrete Injection Epoxy Wood Injection, epoxy crack repair
One of the most versatile, problem solving products available in epoxy systems today is Epoxy Injection Resin. 
Structural restoration of concrete by epoxy injection is very often the only alternative to complete replacement. It therefore results in large cost savings. Injection protects the rebar and stops water leakage.
Epoxy injection of concrete cracks has been used for decades. When properly installed it is still working as well as it did right after it was installed.
Epoxy Injection Resin is a system for welding cracks back together. This welding restores the original strength and loading originally designed into the concrete. 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.
Other waterproofing injection systems like urethane resin will seal the crack from water but will not repair the the member structurally. That makes the structure member vulnerable to additional structural decay. This structural advantage that an epoxy injection repair gives, makes it the best choice for most situations. Epoxy or Urethane Injection discusses when to use epoxy and when to use urethane.
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 structu
ral value. Loosing the entire structure is often the result.
Epoxy injection resin has two purposes. First, it effectively seals the crack to prevent the damaging moisture entry. Secondly, it monolithically welds the structure together. Most people assume that this welding of the structure is the most important result of the repair. Actually what is most important is the sealing.
The sealing properties of the injection prevents premature deterioration of the reinforcing. This can be of equal, or in some cases greater importance than the structural welding. It would theoretically always be desirable to get this welding effect.
Next in The Epoxy Injection Series:
Injection Part 2 – Crack Analysis
For more information visit our website at http://www.epoxy.com, email us at info@epoxy.com or call our technical service department at +1 (352) 533-2167.
Posted by Norm Lambert 
This is the second half of a 2 part of a series on basement waterproofing with epoxy. In Part 1, we discussed waterproofing block wall foundations with epoxy. In Part 2A we discuss how to identify leaks that need waterproofing in basement walls, and floors that are made out of poured concrete. In this part (2B) will deal with epoxy injection repairs of cracks in poured concrete, that cause the leaks.
You need to determine the spacing of ports to be set. The spacing is a factor of the tightness of the crack and the depth of the concrete substrate. Spacing is normally between four (4) and eight (8) inches.
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