Small cracks here and there that are narrower than inch are most likely the result of shrinkage as the driveway cured.
How to fix concrete driveway cracks.
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.
If you re using pourable concrete grout only apply inch of grout per application.
Fill the crack up to the surrounding concrete surface.
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.
A mixer paddle attached to a heavy.
Sand mix or concrete resurfacer which do not contain gravel may be used if the area to be repaired is not large or deep.
Choose your concrete repair product.
Put the mix or compound in a large bucket and add water as directed on the label.
You should also use a trowel to compress the material firmly into the crack.
Concrete surfaces cannot be repaired with concrete.
A standard concrete mix that contains gravel works best for patching large or deep areas.
First use a small hammer and chisel in combination to knock away any.
If you have a lot of cracks you may prefer to use dry concrete mix or concrete patching compound instead.
Stab the trowel into the compound to remove air pockets and help work the patching material deep into the crack.
Mix the concrete patching compound following the manufacturer s directions.
Pour enough dry concrete mix into a 5 gallon bucket to repair any cracks and patch damaged areas.
Trowel the compound into the crack.
Cracks up to inch in width can be filled with sealant.
Prepare the cracked area for patching.
Fill it the crack can then be repaired and filled with something as simple as concrete caulking for hairline cracks or concrete sealer designed to fill larger cracks.
Next mix up enough quikrete concrete resurfacerwith water in a five gallon bucket to fill the cracks.
A mixing paddle chucked in a drill makes preparing the patching material easy.