[pushkins]

Don't let the "patched" area get too hot too quickly, if you can, once it has set up keep it shaded, this will help slow down the curing process rather than in 90 F sun. Applying water (hose down) a couple a times a day over the next few days will also help greatly.
You might also want to drill a couple of small holes in the bottom of the hole and screw in some Tapcon screws, make sure the screw heads are well below the finished surface, this will give the concrete something extra to hold onto.
As also previously mentioned by Hayzee, make sure you use a bonding agent (available at all big box stores) this will be painted onto the broken concrete surface prior to adding the new concrete.
Pretty well no matter what you do it's going to look different from the older concrete section, even if you apply a resurfacing product.


"Vinyl patch".>>>???????