Concrete repair are generally done for many reasons, from the natural structural defects that are caused by the buildings settling or adjusting during the temperature lows and highs to the damage caused by the unexpected water ingress and produced by the preventable corrosion over internal supports. Whereas all these jobs may call for the concrete repair mortar in the same way, like filling the cracks and gaps with specialized repair mortar, and use of repair mortar might differ between these repairs needed
The concrete repair mortars generally are split in two groups, epoxy and cementitious, based on the repair qualities, both of that can be utilized for the different applications.
Preparing the Surface
Often, more than its repair mortar selected, right surface preparation will be a single key factor when it comes to success of a repair installation. Any unsound concrete should be removed. While preparing the area, configurations are the best thing, preferably with the square cut corners to transfer load. You need to avoid any inside corners. And uniform depth of an area getting repaired is desirable. You need to avoid feather edging, particularly on surface that can have more traffic.
Cracks in the concrete normally exhibit movement. Filling the dynamic and moving crack with the rigid repair mortar can result in an area recracking. This movement should be stopped and relieved through the control joint that will manage its cracking. Cracks will be welded with the epoxy; but, failure to stop such movement and install control joints can result in the cracks reappearing.
Working of the Concrete Repair Materials
Repair material is applied by field workers and thus its acceptability is quite important. Property desired by these field workers will be good workability. Thus optimum workability is achieved without even sacrificing on desirable properties with suitable additives or admixtures.