You can either fill the crack with sand leaving inch to the surface of the crack to be filled with the grout or make multiple grout applications that are inch thick allowing adequate time for each application to dry.
Best way to fill large cracks in concrete driveway.
As you can probably tell by the name of it this material is designed to expand just like insulation foam for walls.
Next mix up enough quikrete concrete resurfacerwith water in a five gallon bucket to fill the cracks.
This method is great for filling wide and deep cracks.
Fill the crack with concrete repair caulk such as polyurethane concrete crack sealant from quikrete.
If the joint is inch or wider you ll want to insert a foam backer rod into the crack first to prevent the sealant from running down and out of the crack.
Be sure to clean the crack.
Fill a pressure washer with a concrete outdoor cleaning solution and apply it at low pressure to stains mold and dirt.
Stab the trowel into the compound to remove air pockets and help work the patching material deep into the crack.
A mixing paddle chucked in a drill makes preparing the patching material easy.
On cracks that are wider than 1 4 push foam backer rod into the crack with a screwdriver so it s 1 2 below the surface then fill the crack with concrete repair caulk.
Mix the concrete patching compound following the manufacturer s directions.
Be sure to clean out the cracks out as well removing any dirt or loose concrete so the patching material will adhere to the concrete.
This last option works best to fill large cracks or chipped edges while the other products are suitable for cracks in.
Trowel the compound into the crack.
Watch this video to find out more.
Change to a high pressure nozzle on the pressure washer and finishing cleaning the driveway on high power following the instructions on the cleaning solution.
Let the concrete dry before filling the cracks.
Options include epoxy compounds latex patching material and mortar mixes.