Concrete is a porous, natural material that is prone to wear and tear over time. If you plan to grind a concrete sidewalk, make sure the customer is aware of this fact. Concrete needs to be resurfaced regularly, anywhere from eight to fifteen years in a typical environment.
Using a scarifier or saw can help you level an edge or surface that’s rough. Catch the dust with a machine that has a vacuum attached. Concrete grinders typically remove about 1/16 of an inch of the floor or pavement in a single pass. Take this into account when determining the depth of the initial trim.
Create a smooth surface by slightly sloping the concrete back from the lip or edge of the crack. Use a dry hand grinder to smooth off the surface. The silica dust can be collected with a vacuum, though this isn’t always necessary when working outdoors.
If you grind the concrete pathway down to the required level, the concrete in the work area will appear lighter in color and show more aggregate than the older concrete surrounding it.
Professional concrete grinders often square off the area after grinding. The aesthetically pleasing finish will be created as long as the un-ground concrete nearby is not ground.