Delamination is primarily caused by finishing the surface of the concrete before bleed water and bleed air has had the chance to escape. This creates “blisters” just under the surface that later break down under traffic. Often the owner is unaware that there is a delamination problem in his / her concrete until wear or traffic begins to break down the surface. Delamination exposes the aggregate which is much more susceptible to damage from weather and salt.
To preserve your concrete from further damage it is vital you apply a good sealer right away. TRS can protect the exposed “blisters” where the aggregate is showing and it can also provide greater strength to the blistered areas that have not yet broken under traffic.
To completely repair the defective areas you might consider patching, new surface overlay, or even epoxy injection. If you choose not to repair the patches, you should , at the very least, preserve the areas with TRS to help keep your concrete from further breaking down.
One of the most common complaints about concrete is cracking. Cracking of concrete is caused by any number of factors including drying shrinkage, thermal contraction, sub grade settlement, load on concrete and restraint (external or internal) to shortening.
Preventing problem cracking is your best option here. Truly, the age old saying, “an ounce of prevention equals a pound of cure” is true in this case. You make cracking a lot less likely at the very start by providing good design and installation of joints.